EN PHYWE Catalogue biology

Applied Sciences

Biology

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PhysicssicsModern Physics · Thermodynamics · Mechanics · Optics

Electrochemistry · Spectroscopy · Pysical Chemistry

Ecology and Environment · Senses and Nerves · Microbiology

X-ray · Renewable Energy · Material Sciences · Medicine

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ServiceService from A to Z – our service, your satisfaction

The PHYWE service does not end with the delivery of the equipment.

With our after sales service, we offer you comprehensive support:

þ Customized information

þ Installation and setting-up

þ Stockage service / instruction

þ Training courses at PHYWE or on-site

þ Technical service

þ Repair serviceBy choosing a PHYWE product you decide for a comprehensive

service at the same time. We support you with our multi-level

service concept. From planning through to installation and up to

our extensive after sales service. Rely on our strengths: rugged and

long-lasting products made in Germany, customized for your needs.

Individual Service for individual needs

Customer service before, during and afteryour purchase

1st response within 24 hourswith tracking number

P. +49 (0) 551 604-126

F. +49 (0) 551 604-106

[email protected]


4.14.1 Environmental analysisEnvironmental analysis 501501502502507507510510512512

4.24.2 Ecology and meteorologyEcology and meteorology 513513514514522522525525527527

4.34.3 BehaviourBehaviour 531531532532

4.44.4 Sensory organsSensory organs 535535536536544544

BiologyBiology

4.1.14.1.1 Measurement instrumentsMeasurement instruments4.1.24.1.2 Water analysisWater analysis4.1.34.1.3 Soil analysisSoil analysis4.1.44.1.4 Air analysisAir analysis

4.2.14.2.1 General - ecology and meteorologyGeneral - ecology and meteorology4.2.24.2.2 Water analysis in the laboratoryWater analysis in the laboratory4.2.34.2.3 Soil and air analysis in the laboratorySoil and air analysis in the laboratory4.2.44.2.4 MeteorologyMeteorology

4.3.14.3.1 BehaviourBehaviour

4.4.14.4.1 Light senseLight sense4.4.24.4.2 Hearing senseHearing sense

4 Biology4 Biology

PHYWE Systeme GmbH & Co. KG · www.phywe.comwww.phywe.com

499

5475474.54.5 Nerves and musclesNerves and muscles 549549

550550556556

4.64.6 Respiration and circulationRespiration and circulation 561561562562565565

4.74.7 Our food - analysis, production, digestionOur food - analysis, production, digestion 571571572572574574

4.84.8 Plants, growth, development, metabolismPlants, growth, development, metabolism 579579580580585585587587588588589589

4.94.9 Biochemistry, Microbiology, Electrophoresis, X-rayBiochemistry, Microbiology, Electrophoresis, X-ray 593593594594600600602602

4.4.34.4.3 Temperature senseTemperature sense

4.5.14.5.1 Experiments with functional modelsExperiments with functional models4.5.24.5.2 Real ExperimentsReal Experiments

4.6.14.6.1 RespirationRespiration4.6.24.6.2 Blood circulationBlood circulation

4.7.14.7.1 Food analysis and productionFood analysis and production4.7.24.7.2 Digestion, excretionDigestion, excretion

4.8.14.8.1 GeneralGeneral4.8.24.8.2 Growth, developmentGrowth, development4.8.34.8.3 Water balanceWater balance4.8.44.8.4 Mineral balanceMineral balance4.8.54.8.5 Gas balanceGas balance

4.9.14.9.1 BiochemistryBiochemistry4.9.24.9.2 Microbiology and biotechnologyMicrobiology and biotechnology4.9.34.9.3 X-ray imaging, Computer Tomography and dosimetryX-ray imaging, Computer Tomography and dosimetry

4 Biology4 Biology


500

4.1.14.1.1 Measurement instrumentsMeasurement instruments 5025024.1.24.1.2 Water analysisWater analysis 5075074.1.34.1.3 Soil analysisSoil analysis 5105104.1.44.1.4 Air analysisAir analysis 512512

Environmental analysisEnvironmental analysis

4 Biology4 Biology4.1 Environmental analysis


501

Cobra4 Mobile-LinkCobra4 Mobile-Link

Function and ApplicationsFunction and Applications

The Cobra4 Mobile-Link is a modern, high performance hand measur-ing device for mobile data recording, to which all Cobra4 Sensor-Unitscan be connected via a secure plug-in/lockable connection.

BenefitsBenefits

The Cobra4 Mobile-Link particularly stands out for the following fea-tures

Up to 1,000 measuring values/sec, Data can be saved on an SD memorycard, Automatic detection of all Cobra4 Sensor-Units, Foolproof nav-igation with central navigation cross, "measure" evaluation softwarecan be used for FREE, Water-resistant and reliable for outdoor work.

The Cobra4 Mobile-Link is idealfor use in:

Students experiments with no computer (as a digital multi-meter fornumerous measuring parameters), Outdoor experiments with studentgroups, Project days, trips, schoolhiking days etc.

Equipment and technical dataEquipment and technical data

Power supply: 2 x Mignon batteries, Power consumption: < 300 mA,Data storage: Max. 2 GB SD card, Data rate: 1,000 values/s, Dimen-sions: L x B x H: 155x65x35 mm, Weight: 200 g, Delivery incl. op-erating manual plus CD-ROM with drivers and demo version of the"measure Cobra4" measuring software incl. FREE evaluation software,experiments descriptions and configuration settings for experiments,Delivery without batteries and memory card.

Cobra4 Mobile-LinkCobra4 Mobile-Link12620-0012620-00

SD memory card for Cobra4-Mobile-Link, 2 GB, 20MB/secSD memory card for Cobra4-Mobile-Link, 2 GB, 20MB/sec12620-0112620-01

SD card readerSD card reader12620-0312620-03

Cobra4 Mobile-Link set, incl. rechargeable batteries, SD memoryCobra4 Mobile-Link set, incl. rechargeable batteries, SD memorycard, USB cable and software "measure"card, USB cable and software "measure"12620-5512620-55

Cobra4 Sensor-Unit Temperature, semiconductorCobra4 Sensor-Unit Temperature, semiconductor-20...110 °C-20...110 °C

Funktion and ApplicationsFunktion and Applications

Cobra4 -20..110°C Sensor-Unit Temperature-semiconductor

BenefitsBenefits

can be connected directly to the Cobra4Wireless-Link, the Cobra4Mobile-Link or the Cobra4 USB-Link.


Sensoatar jacket: stainless steel, Measuring range: -20..+110°C, Ab-solute accuracy: ± 0.5°C, Resolution: 0.05°C, Time constant: 7 s, Dataflow rate: 200 Hz, Connecting port: sub-D-15-pole, Sensor length /diameter: 200 mm, 6 mm, Cable length: 120 cm, Weight: 125 g

12640-0012640-00

Cobra4 Sensor-Unit 2 x Temperature, NiCr-NiCobra4 Sensor-Unit 2 x Temperature, NiCr-Ni


The Cobra4 Sensor-Unit 2 x Temperature NiCr-Ni is a measuring re-corder for temperature measurements, which is controlled by micro-controller.

BenefitsBenefits

It canbe fitted with two NiCr-Ni thermoelements (type K), in order tomeasure up to two temperatures simultaneously or to measure a tem-perature difference, The Cobra4 Sensor-Unit 2 x Temperature NiCr- Nican be connected to the Cobra4Wireless-Link, the Cobra4 Mobile-Linkor the Cobra4 USB-Link using a secure and reliable plug-in / lockableconnection.


Temperature measuring range: -200..+1200 °C, Resolution: 0.1 K,Measuring accuracy: equal to the accuracy of the gauges used, Dataflow rate: 5 Hz, Dimensions: approx. 62 mm x 63 mm, Weight: 85 g

12641-0012641-00

4.1 Environmental analysis4.1 Environmental analysis4.1.1 Measurement instruments


502

Cobra4 Sensor-Unit Chemistry, pH and 2 xCobra4 Sensor-Unit Chemistry, pH and 2 xTemperature NiCr-NiTemperature NiCr-Ni


The Cobra4 Sensor-Unit pH and 2 x temperature NiCr-Ni is a measuringrecorder for pH, potential and temperature measurements, which iscontrolled by micro-controller.

BenefitsBenefits

It can be fitted with two NiCr-Ni thermoelements (Type K) and a pHprobe or Redox measuring chain, in order to measure up to two tem-peratures and one pH or potential value simultaneously, The unit canbe connected to the Cobra4Wireless-Link, the Cobra4 Mobile-Link orthe Cobra4 USB-Link using a secure and reliable plug-in/lockable con-nection.


Temperature: Measuring range: -200..+1200 °C, Resolution: 0.1 K,Measuring accuracy: equal to the accuracy of the gauges used

pH: Measuring range: 0...14, Resolution 0.01K, Measuring accuracy: ±0,5%

Potential: Measuring range -2000..+2000 mV, Resolution: 0.1 mV,Measuring accuracy: ± 0.5%, Data flow rate: 5 Hz

Dimensions: approx. 62 mm x 63 mm, Weight: 95 g

12630-0012630-00

Cobra4 Sensor-Unit Thermodynamics, pressure abs. 2Cobra4 Sensor-Unit Thermodynamics, pressure abs. 2bar and 2 temperature NiCr-Nibar and 2 temperature NiCr-Ni


The Cobra4 Sensor-Unit Thermodynamics is a measuring recorder forpressure and temperature measurements, which is controlled bymicro-controller.

BenefitsBenefits

It canbe fitted with two NiCr-Nithermoelements (type K), in order tomeasure up to two temperatures and one absolut pressure value sim-ultaneously, The unit can be connected to the Cobra4Wireless-Link,the Cobra4 Mobile-Link or the Cobra4 USB-Link using a secure and re-liable plug-in/ lockable connection.


Temperature:

Measuring range: -200..+1200°C, Resolution: 0.1 K, Measuring accur-acy: equal to the accuracy of the gauges used

Pressure:

Measuring range: 0...2000 hPa, Resolution 0.1 hPa, Measuring accur-acy: ± 0,5%, Data flow rate: max. 5 Hz

Dimensions: approx. 62mm x 63mm x 35mm, Weight: approx. 190 g

12638-0012638-00

Thermocouple NiCr-Ni,sheathedThermocouple NiCr-Ni,sheathed


Thermocouple, that ca be connected to Cobra4 Sensor Units 2x tem-perature, Thermodynamics and Chemistra.


▪ Response Time: <1 s▪ Cable: 1m▪ Stainless steel sheath▪ Magnesiumoxidepowder insulation

Thermocouple NiCr-Ni, sheathedThermocouple NiCr-Ni, sheathed13615-0113615-01

Thermocouple NiCr-Ni, -50...500°CThermocouple NiCr-Ni, -50...500°C13615-0213615-02

Immersion probe NiCr-Ni, steel, -50...400°CImmersion probe NiCr-Ni, steel, -50...400°C13615-0313615-03

Surface probe NiCr-NiSurface probe NiCr-Ni13615-0413615-04

Immers. probe NiCr-Ni, teflon, 200°CImmers. probe NiCr-Ni, teflon, 200°C13615-0513615-05

Cobra4 Sensor-Unit pH, BNC connectorCobra4 Sensor-Unit pH, BNC connector


The Cobra4 Sensor-Unit pH, BNC connection is a measuring recorderfor pH and potential measurements, which is controlled by micro-controller.



503

BenefitsBenefits

It can be fitted with a pH probe or Redoxmeasuring chain, in orderto measure pH or potential values, The unit can be connected to theCobra4 Wireless-Link, the Cobra4 Mobile-Link or the Cobra4 USB-Linkusing a secure and reliable plug-in / lockable connection.

Equipment and technicla dataEquipment and technicla data

pH:

Measuring range: 0...14pH, Resolution: 0.01K, Measuring accuracy: ±0.5%

Potential:

Measuring range: -2000...+2000 mV, Resolution: 0.1 mV, Measuringaccuracy: ± 0.5%, Data flow rate: 5 Hz, Dimensions: approx. 62 mm x63 mm, Weight: 70 g

12631-0012631-00

pH-electrode, plastic body, gel, BNCpH-electrode, plastic body, gel, BNC46265-1546265-15

pH-electrode, plastic, refill., BNCpH-electrode, plastic, refill., BNC46266-1546266-15

Redox electrode, BNCRedox electrode, BNC46267-1046267-10

pH-electrode, glass, refill., BNCpH-electrode, glass, refill., BNC46268-1046268-10

Cobra4 Sensor-Unit Conductivity / Temperature Pt1000Cobra4 Sensor-Unit Conductivity / Temperature Pt1000


The Cobra4 Sensor-Unit Conductivity /Temperature (Pt1000) is a meas-uring recorder for conductance measuring sensors with a cell constantof K = 1.00/cm and which is controlled by micro-controller.

BenefitsBenefits

▪ The Cobra4 sensor may be connected directly to the Cobra4Wireless-Link, the Cobra4 Mobile-Link or the Cobra4 USB-Link us-ing a secure and reliable plug-in / lockable connection.


Conductivity:

▪ Measuring range 1:0.0 .. approx. 2,500.0 µS/cm▪ Measuring accuracy: 4% of the measuring value ±0.15 µS/cm▪ Measuring range 2:0 .. approx. 45,000 µS/cm▪ Measuring accuracy: 4% of the measuring value ±3 µS/cm▪ Measuring range 3:0.00 .. approx. 1,100 mS/cm▪ Measuring accuracy: 4% of the measuring value ±0.05 mS/cm

Temperature:

▪ Measuring accuracy:-20.0°C..150.0°C▪ Resolution: 0.1 K▪ Measuring accuracy: ±0.5K (in the range 0..100°C)

▪ Measuring cycle: 0.8...2s (adjusted automatically)▪ Dimensions approx. 62 mm x 63 mm

Cobra4 Sensor-Unit Conductivity+, Conductivity/ TemperatureCobra4 Sensor-Unit Conductivity+, Conductivity/ Temperature(Pt1000)(Pt1000)12632-0012632-00

Temp. probe, imm. type, Pt1000, Cobra3Temp. probe, imm. type, Pt1000, Cobra312123-0012123-00

Conductivity temperature probe Pt1000Conductivity temperature probe Pt100013701-0113701-01

Cobra4 Sensor-Unit Conductivity, with stainless steelCobra4 Sensor-Unit Conductivity, with stainless steelelectrodeselectrodes


The Cobra4 Sensor-Unit Conductivity/Temperature with stainless steelelectrodes can be connected directly to the Cobra4 Wireless-Link, theCobra4 Mobile-Link or the Cobra4 USB-Link using a secure and reliableplug-in / lockable connection.

BenefitsBenefits

Particularly good application for school and outdoor experimentation,as the measuring gauge is already firmly connected.


Conductivity:

Measuring range: 0.2 µS/cm...200 mS/cm, Measuring accuracy: 6% ofthe measuringvalue ± 0,2µS/cm, Resolution: 0.1 µS/cm, 1 µS/cm, 10µS/cm, 100 µS/cm

Temperature:

Measuring range: 0 to 100°C, Measuring accuracy: ± 0.8°C, Resolution:0.1°C , Data flow rate: 1 Hz, Connecting port: sub-D-15 pole, Meas-uring electrode length, diameter,electrode spacing: 7 mm, 1 mm, 2mm, Cable length: 60 cm, Weight: 85 g

12633-0012633-00



504

Cobra4 Sensor-Unit Weather: Humidity, AirCobra4 Sensor-Unit Weather: Humidity, Airpressure,Temperature, Light intensity, Altitudepressure,Temperature, Light intensity, Altitude


Depending on application type, the Cobra4 Sensor-Unit Weather canbe connected to the Cobra4 Wireless-Link, the Cobra4 Mobile-Link orthe Cobra4 USB-Link using a secure and reliable plug-in/ lockable con-nection.

BenefitsBenefits

At the same time, the following measuring parameters may be re-corded: airpressure, relative humidity, airtemperature, brightness,height , Ideal for use in outdoor experiments, on classtrips or for pro-ject or school hikingdays.


Relative Humidity:

measurement range 0 - 100 %, accuracy +/- 5 %

Air Pressure:

measurement range 10 - 1100 mbar, accuracy +/-5 %

Air Temperature:

measurement range -40 - +125 °C, accuracy +/- 0.5 °C

Brightness:

measurement range 0 - 10,000 lx, accuracy +/- 5 %, calculation usingair pressure, Data transfer rate for each sensor: 1 Hz, Dimensions (L xB x H): 64 x 70 x 31 mm, Weight: 60 g

12670-0012670-00

Oxygenmeter, hand-heldOxygenmeter, hand-held


For measurement of oxygen concentration or saturation of temperat-ure and of atmospheric pressure.

BenefitsBenefits

▪ 2 four-digit LCD Display with 15 or 7.5 mm digit height▪ Analog bar display with good resolution (2% of measuring range)▪ RS232 interface to transmit the measurements to a computer or

on a large display▪ built-in data logger for storing max.250 measurements▪ Representation of the minima, maxima and averages of a series

of measurements▪ Battery, accu or external power supply▪ automatic shut-down▪ water protected keyboard▪ Automatic air pressure and temperature correction▪ Manual salinity correction


Oxygen

▪ Measuring ranges:

▪ Concentration 0,0...20,0 mg O2/l▪ Saturation 0-120%▪ Accuracy 1,5% of meas. value▪ Salinity correct. 0...70 salinity▪ Connection 5 pin diode socket

Temperature

▪ Measuring range 0...+45C▪ Resolution 0.1C▪ Accuracy +-( 0.1C + 1Digit)▪ Type of probe Pt 1000

Atmospheric pressure

▪ Measuring range 500...1100 hPa (mbar)

AccessoriesAccessories

12105-01 Oxygen/Temperature probe

Oxygenmeter, hand-heldOxygenmeter, hand-held07135-0007135-00

Oxygen/Temperature probeOxygen/Temperature probe12105-0112105-01

Softw. Oxygenmeter, hand-heldSoftw. Oxygenmeter, hand-held14415-6114415-61

Lux meter, hand-heldLux meter, hand-held


For determining light intensities of up to 300 klx in air and waterbodies.

BenefitsBenefits



of measurements▪ Battery, accu or external power supply▪ automatic shut-down▪ water protected keyboard▪ Calibration manually or automatically


▪ 4 measuring ranges 0,001 Lx-300 kLx▪ resolution 0,1/1/10/100 Lx▪ Accuracy 3/3/3/5 %▪ 5 pole probe connector jack▪ Data interface type RS 232 (serial)▪ Baudrate 9600 bit / s▪ USB port connector

Lux meter, hand-heldLux meter, hand-held07137-0007137-00

Lux immersion probe, 10m cableLux immersion probe, 10m cable07137-0107137-01

Softw. Luxmeter, hand-heldSoftw. Luxmeter, hand-held14417-6114417-61

Data cable RS 232, SUB-D/USBData cable RS 232, SUB-D/USB07157-0107157-01



505

Large-scale display, digital, RS-232 portLarge-scale display, digital, RS-232 port


Special four-digit large-format display for presenting the measure-ment data supplied by the new Cobra4 Mobile-Link with Cobra4Display-Connect, the Cobra3COM-UNIT, the PHYWE hand-held measur-ing instruments and Sartorius or Scaltecbalances equipped with datainterfaces.

BenefitsBenefits

Fit for the future: The large-formatdisplay can be updated and adap-ted to other measuring instruments which are not available on themarket yet.


4-digit digital display with a digit height of 56 mm, Matrix display(15×14) pixels for presenting the units, Serial interface (RS 232) forconnecting a measuring instrument, Secondconnector for the simul-taneous presentation of another measuring quantity, Threaded con-nectors for connectingsupport stands or a clamp (to attache the dis-play to various experimental set-ups).

Large-scale display, digital, RS-232 portLarge-scale display, digital, RS-232 port07157-9307157-93

Data cable for cobra probesData cable for cobra probes12150-0712150-07

Data cable, plug/ socket, 9 poleData cable, plug/ socket, 9 pole14602-0014602-00

Cobra4 Display-Connect TX, transmitter for using the Cobra4Cobra4 Display-Connect TX, transmitter for using the Cobra4Mobile-Link with large-scale displaysMobile-Link with large-scale displays12623-0012623-00

Cobra4 Display-Connect TX, receiver for using the Cobra4Cobra4 Display-Connect TX, receiver for using the Cobra4Mobile-Link with large-scale displaysMobile-Link with large-scale displays12623-0112623-01

Cobra4 Display-Connect, Set of transmitter and receiver forCobra4 Display-Connect, Set of transmitter and receiver forusing the Cobra4 Mobile-Link with large-scale displaysusing the Cobra4 Mobile-Link with large-scale displays12623-8812623-88

Cobra3 DISPLAY-UNITCobra3 DISPLAY-UNIT


For large display of electrical and nonelectrical measured values andtheir units in combination with Cobra3 BASIC-Unit and COM-unitwith modules Cobra3 CHEM-Unit and COM- unit-hand-held measuringdevices-electronic balances


▪ two 5-digit 20-mm-LED-displays for digital display of measuredvalues

▪ 2 LED dot matrix displays for demonstrating units▪ 2 dot matrix displays for demonstrating the selected measure-

ment channels▪ Connections:▪ 2 RS 232C-D-SUB-9-plugs for donnecting up to the Cobra3 COM

Unit or for connecting up to 2 hand-held devices or 1 balance▪ 1 RS 232C-D-SUB-9-jack for connecting an additional Cobra3 Dis-

play unit▪ 1 48-pin system plug for direct connection to the Cobra3 COM

unit.▪ Supply: 12V DC

▪ Dimensions: (190x135x90) mm

Cobra3 Display UnitCobra3 Display Unit12154-0012154-00

Power supply 12V / 2APower supply 12V / 2A12151-9912151-99



506

Acidity changes of a watercourseAcidity changes of a watercourse

PrinciplePrinciple

The pH value (a measure of the concentration of hydrogen ions) inrunning waters depends on the geological conditions, the pollu-tion load that is caused by agricultural production, and on plantactivities. This experiment shows how the pH value of a streamchanges even at a short distance and just a few kilometres awayfrom the spring.

Literature for this experiment as follows:Literature for this experiment as follows:

TESS und Demo advanced Handbuch Cobra4Physik, Chemie, Biolo-gie, Alltagsphänomene01330-0101330-01 German

TESS and Demo advanced Manual Cobra4 Physics, Chemistry, Bi-ology, Everyday Science01330-0201330-02 English

TESS advanced Applied Sciences Handbuch Cobra4 Umwelt undFreiland12622-0112622-01 German

TESS advanced Applied Sciences manual Cobra4 environment andoutdoors12622-0212622-02 English

P1520862P1520862

We visit a wastewater treatment plantWe visit a wastewater treatment plant

PrinciplePrinciple

A visit to a water treatment plant reveals some fascinating proced-ures and purification methods. We will not merely be concernedwith interesting impressions, but instead we will increase our un-derstanding for microbiological processes by measuring the keyparameters: temperature, pH and salinity.






P1521662P1521662

TESS Applied Sciences Cobra4 environment andTESS Applied Sciences Cobra4 environment andoutdoorsoutdoors


This device set is ideally suited to shared-work experiments withschoolgroups.

BenefitsBenefits

▪ Whether in the classroom, outdoors or on project days: in thisrobust aluminium case, you will always find the right device forcarrying out fascinating experiments with schoolgroups.

▪ Up to 4 work groups can work on and investigate interesting top-ics in parallel.

▪ All data are saved on SD memory cards.▪ Evaluation of the data can be carried out e.g. at home, as home-

work.▪ The measure evaluation software is included for FREE and may,of

course, be used privately by each pupil.

TIP:TIP:

This device is also ideal for use e.g.in the context of a school hikingday: here, a topografic profile can easily be produced with the weath-er sensor. In Geography lessons, the data can be evaluated and in-terpreted together. If the height is then set against the temperature,humidity relative to the path, or temperature relative to the time ofday, great discoveries can be made, which are both practical and fun.


The highly stable aluminium case contains the following materials:

▪ 4 x Cobra4 Mobile-Link▪ 1 x Cobra4 Sensor-Unit pH, BNC connection▪ 1 x Cobra4 Sensor-Unit Weather: airpressure, humidity, ambient

temperature, brightness▪ 1 x Cobra4 Sensor-Unit,Temperature-Semiconductor 20...110 °C▪ 1 x Cobra4 Sensor-Unit Conductivity with permanently connected

stainless steel

4.1 Environmental analysis4.1 Environmental analysis4.1.2 Water analysis


507

▪ 1 x pH plastic, gel-filled electrode▪ 1 x 100 red pH 4 buffer trays▪ 1 x 100 green pH 10 buffer trays▪ 1 x 460 ml calibration solution for conductance electrode▪ 1 x protective case for GL 25pH electrode▪ 1 x 120 labels, 4 x 100 ml square flange (HDPE)▪ 2 x 250 ml PP laboratory beaker▪ 4 x 1 GB 20 MB/sec SD memory card for Cobra4 Mobile-Link▪ 1 x 110...240 V Charger for metal hybrid batteries▪ 2 x Mignon 1.2 V 2700 mAh spare batteries - set of 4▪ operating manual plus CD-ROM with drivers and demo version of

the "measure Cobra4" measuring software, incl. FREE evaluationsoftware

▪ experimental descriptions and configuration settings for experi-ments

TESS Applied Sciences Cobra4 environment and outdoors, for 4TESS Applied Sciences Cobra4 environment and outdoors, for 4work groupswork groups12622-8812622-88

TESS advanced Applied Sciences manual Cobra4 environment andTESS advanced Applied Sciences manual Cobra4 environment andoutdoorsoutdoors12622-0212622-02

TESS Biology Set biological water analysisTESS Biology Set biological water analysis


Eco-Kit "Biological testing of water quality"

BenefitsBenefits

The enclosed manual containing tables and analysis of arches allowsassignment to the water quality classes I. .. IV


▪ Screens▪ Trays▪ Shells, large and small▪ Tweezers▪ Brushes▪ Pipettes▪ Magnifier glasses, large and small▪ Petri dishes▪ Catchall for aquatic organisms▪ Caliper▪ Rulers▪ Manual with key▪ Snap lid jars

TESS Biology set Biological water analysisTESS Biology set Biological water analysis30834-8830834-88

TESS Biology manual biological water quality testingTESS Biology manual biological water quality testing30834-0230834-02

TESS Biology Set chemo-physical water testingTESS Biology Set chemo-physical water testing


This kit allows up to 8 work groups to carry out field examinations ofrunning water and lakes.

The following parameters are measured:

Temperature, oxygen content, pH, conductivity, nitrate, nitrite, phos-phate and ammonium content, alkalinity (total hardness).

The examinations can be extended to further parameters when the kitis supplemented with extra equipment, available as accessories andfor which room has been reserved in the case:

Depth of transparency (measured using a Secchi disc or a Lux meterwith immersion probe), water profiles (measurement down to 10 mdepth using a water scoop).

The methods are mainly chemico-physical determinations acc. toBACH. They allow an objective assessment of the water quality, andare referred to by the Scottish and American Environmental Authorit-ies, as well as those of some German Federal States, in their reportson water quality. The chemico-physical examination methods alwaysgive momentary values, and so allow measurements of variation over-time (daily and seasonal variations) as well as at different positions(e.g.pollution by influents). Added meaningis given by supplementingthese methods with biological methods, which aim at the document-ation of long-term changes in the condition of the body of water.

TESS Biology set Chemo-physical water analysisTESS Biology set Chemo-physical water analysis30837-8830837-88

TESS Biology manual chemo-physical water testingTESS Biology manual chemo-physical water testing30837-2230837-22



508

Water analysis caseWater analysis case


For the determination of the quality of bodies of water which areto a great extent unburdened with waste water and of the pollutioncaused in them by an influx of municipal waste water, or for the mon-itoring of pond fertilization.

BenefitsBenefits

suitable for examining both standing and running waters , the excur-sion case inclusdes test kits for the determination of:

ammonium, pH, nitrate, nitrite, phosphate, iron, total water hard-ness, carbonate, oxygen


water analysis case, manual with detailed instructions

30831-0030831-00

Reagent case for water analysis with filterReagent case for water analysis with filterphotometerphotometer


This excursion case enables students to actively participate in themeasurement of water parameters in your immediate neighbourhood.Rapid chemical analyses provide meaningful results in a very shorttime. The colourimetric tests can be reproducibly and exactly evalu-ated by using the portable filter photometer.

BenefitsBenefits

Compact water laboratory for mobile use with photometer, reagentsand accessories in a new robust case with a premium foamed plasticinsert, increased accuracy and reproducibility by photometric evalu-ation of colourimetric tests, economic refill packs with up to 200 de-terminations per parameter


Reagent case with Photometer PF-12 incl. manual and 4 batterieswith filters for the following wave lengths: 345 / 436 / 470 / 540 / 585/ 620 / 690 nm, Software for transfering the measured data to a PC,Manual with test instructions for test kits, 4 empty tubes, 1 funnel, 1beaker 25 ml, 1 syringe 5 ml, 1 syringe 1 ml, 1 thermometer, 2 titra-tion syringes with dropping tips, 2 titration test tubes, The followingtest kits: Ammonium, iron, nitrate, nitrite, phosphate, pH , carbonatehardness and total hardness


Ni-MH accumulators, Mignon, 1.2 V, 2000 mAh, Eneloop Type, 4 pcs.(07930-03), Fast Charging System for up to 4 Ni-MH accumulators,100...240 V (07930-99), Refill packs of the test kits

30839-0030839-00



509

The pH value of various soilsThe pH value of various soils

PrinciplePrinciple

Information concerning the quality of soils is of great importancefor agricultural production. The students are familiarised with thissubject via two experiments with pH measurements that show howmuch soils may differ from each other (experiment "Characterist-ic pH values of various soils") and how significant the differenceswithin a soil itself may be (experiment "Soil profile").






P1521062P1521062

Comparison of soil and air temperatures in theComparison of soil and air temperatures in thecourse of a daycourse of a day

PrinciplePrinciple

How does the temperature of the air affect the temperature of thesoil in the course of a day?






P1520962P1520962

TESS Biology Introduction SetsTESS Biology Introduction Sets

TESS Biology Introduction consists of two sets (Set 1 and Set 2), whichenable the performance of 92 experiments. Both sets are needed.

TESS Biology set 1 GlasswareTESS Biology set 1 Glassware13296-8813296-88

TESS Biology set 2 EquipmentTESS Biology set 2 Equipment13297-8813297-88

TESS advanced Biology manual students experimentsTESS advanced Biology manual students experiments01845-0201845-02

TESS Applied Sciences Set soil examinationTESS Applied Sciences Set soil examination


Case with material for 6 work groups

4.1 Environmental analysis4.1 Environmental analysis4.1.3 Soil analysis


510

BenefitsBenefits

▪ to investigate the 18 most important soil parameters:soil profile(soil horizons, soiltype), mineral matter (stone content, fineearthcontent, soil texture), body of humus (humus content, hu-mustype), water/air (soil moisture, watercapacity, water per-meability rate, utilizable water capacity), soil structure (soil com-paction, aggregate stability/tilth), acidity (pH value, lime con-tent), nutrients (nitrate content of soil,nitrate content of fruitand vegetables), soil life (soil animals)

▪ Includes 65 page manual on the theoretical basis of the topicsand with experimental instructions.

TESS Applied Sciences set soil examinationTESS Applied Sciences set soil examination30836-8830836-88

TESS Applied Sciences manual examination of soilTESS Applied Sciences manual examination of soil30836-0230836-02

Excursion set, soil analysisExcursion set, soil analysis


The case contains the complete equipment for the determination ofthe type of soil, the soil structure, the pH of the soil and its nutrientcontent, i.e. the nitrogen, phosphate and potassium content avail-able to plants.

BenefitsBenefits

The manual contains detailed descriptions of experiments for determ-ining soil characteristics, It contains a complete schedule for soil test-ing, from taking samples to differentiating the various soil types, fromthe determination of the nutrient content to the calculation of theamount of fertiliser required, It also supplies valuable backgroundinformation, All necessary reagents, equipment and accessories areclearly positioned in the case, so that a glance suffices to check thatit is complete.


Extraction Solutions, Balance, 2 scoops, 3 syringes, Pleated filter,Colander, Spray bottle, 5 containers, 2 cylinders, 2 funnels, Blades,Spoon


Soil auger (64221-01), Soil auger, small (64222-00)

30346-0030346-00

Humidity determination apparatus in transport boxHumidity determination apparatus in transport box


To determine the moisture content of the soil. This method can be im-plemented particularly in ecological pilot projects, which it providesfast and reliable results.


▪ CM pressure cylinder▪ manometer▪ 3 manometer sealings▪ 3 bottle sealings▪ precision spring balance▪ testing medium for the manometer▪ metal grinding bowl▪ 4 stainless steel bullets in plastic can▪ 20 calciumcarbide phials in plastic can▪ chisel▪ operating manual▪ bottle brush▪ plastic scoop▪ 5 weighing pans▪ metalcase

Humidity determination apparatus in transport boxHumidity determination apparatus in transport box64203-0264203-02

Calcium carbide, amp., 100 offCalcium carbide, amp., 100 off64203-1064203-10

4.1 Environmental analysis4.1 Environmental analysis4.1.3 Soil analysis


511

TESS Applied Sciences Set "Gas Examination"TESS Applied Sciences Set "Gas Examination"

Function and applicationsFunction and applications

For investigating air pollution caused by car exhaust gases.


The case contains the following:

▪ Gas detector pump (100 ml air/stroke)▪ Test tube for carbon monoxide, sulphur dioxide, 2x carbon diox-

ide, ozone, nitrous gases, benzene and hydrocarbons▪ 100-l test bag for exhaust gases with measuring connection, rub-

ber hose and clamp▪ Handbook with detailed instructions

30838-8830838-88

Bag f. exhaust gas,w.connec.pc.Bag f. exhaust gas,w.connec.pc.


100-liter gas bag with heat-resistant exhaust hose and special ad-apters for all standard exhaust pipes. With test point for testing tubes(gas detection pump). Furthermore, the exhaust gas testing bag canalso be used to measure quantity of exhaust gas. Questions like: "Howlong would the engine of the tested cars have to run to fill the schoolgym completely with exhaust fumes?" always lead to interesting dis-cussions.

64199-2064199-20

Gas detector for the quantitative determination ofGas detector for the quantitative determination ofgasgas


For the determination of gaseous air pollution

AdvantagesAdvantages

Bellows pumps to be operated by hand for the suctioning of definedair quantities. With different test-tubes, gaseous air pollution can bedetermined quantitatively and qualitatively.


Suction volume: 100 ml/stroke, automatic stroke counter to avoidfaulty measurements, optical display signals that the necessary testair has been suctioned

Gas tester I, quantitat.analysisGas tester I, quantitat.analysis64199-0264199-02

Accessory set for Gas TesterAccessory set for Gas Tester64199-0664199-06

4.1 Environmental analysis4.1 Environmental analysis4.1.4 Air analysis


512

4.2.14.2.1 General - ecology and meteorologyGeneral - ecology and meteorology 5145144.2.24.2.2 Water analysis in the laboratoryWater analysis in the laboratory 5225224.2.34.2.3 Soil and air analysis in the laboratorySoil and air analysis in the laboratory 5255254.2.44.2.4 MeteorologyMeteorology 527527

Ecology and meteorologyEcology and meteorology

4 Biology4 Biology4.2 Ecology and meteorology


513

Comparison of the heat capacities of water and land (with the Cobra3 Chem-Unit)Comparison of the heat capacities of water and land (with the Cobra3 Chem-Unit)

PrinciplePrinciple

Comparison of heat capacities of water and land.

TasksTasks

What you can learn aboutWhat you can learn about


Labortory Experiments Biol., L.V.16506-0216506-02 English

P4100140P4100140

Comparison of the heat capacities of water and land (with the Cobra3 Basic-Unit)Comparison of the heat capacities of water and land (with the Cobra3 Basic-Unit)

P4100111P4100111

1. To prepare comparison curves showing the different heat capacities of water and land.2. To interpret data on climate and to explain how onshore and offshore wind originate.

▪ Heat capacity▪ Heat radiation▪ Origin of climatic fluctuations▪ Generation of onshore and offshore winds

4.2 Ecology and meteorology4.2 Ecology and meteorology4.2.1 General - ecology and meteorology


514

The Bergmann rule: heat loss as a function of the body surface area and volume (with the Cobra3 Chem-Unit)The Bergmann rule: heat loss as a function of the body surface area and volume (with the Cobra3 Chem-Unit)

PrinciplePrinciple

Demonstration of different heat losses in dependence on body surface area and volume.

TasksTasks




P4100240P4100240

The Bergmann rule: heat loss as a function of the body sur face area and volume (with the Cobra3 Basic-Unit)The Bergmann rule: heat loss as a function of the body sur face area and volume (with the Cobra3 Basic-Unit)

P4100211P4100211

1. To prepare a graph which demonstrates the different heat losses with different volumes and body surface areas.2. To interpret data on the settling of warm and cold regions by lager or smaller animals.

▪ Bergman rule▪ Heat losses▪ Lager versus smaller animals▪ Coler versus warmer regions of the world



515

Conductivity of various water samples (with the Cobra3 Chem-Unit)Conductivity of various water samples (with the Cobra3 Chem-Unit)

PrinciplePrinciple

Determination of conductivity.

TasksTasks




P4100540P4100540

1. To determine the condutivity of various water samples.2. To discuss the reasons for the big differences in conductivity.

▪ Conduytivity of water samples▪ Rainwater▪ Drinking water▪ Aquarium water▪ River water▪ Mineral water▪ Electrolytes waste water▪ Eluvation▪ Contamination by inorganic salts▪ Horizontal/vertical zones



516

The pH value of various water samples (with the Cobra3 Chem-Unit)The pH value of various water samples (with the Cobra3 Chem-Unit)

PrinciplePrinciple

Determination of the pH-values.

TasksTasks




P4100640P4100640

1. To determine the pH-values of various water samples.2. To discuss the reasons for the big differences in pH-value.

▪ pH of water samples▪ Demineralised water▪ Aquarium water▪ Rainwater▪ Lake water▪ River water▪ Drinking water▪ Mineral water▪ Seasonal and daily fluctuations▪ Buffering effects▪ Poisoning effects for animals



517

The origin of acid rain (with the Cobra3 Chem-Unit)The origin of acid rain (with the Cobra3 Chem-Unit)

PrinciplePrinciple

In this experiment, acid rain is to be artificially prepared by passing gases such as SO2, NO2 and Co2 through water.

TasksTasks




P4100740P4100740

The origin of acid rain (with the Cobra3 Basic-Unit)The origin of acid rain (with the Cobra3 Basic-Unit)

P4100711P4100711

1. Drop in pH resulting from the formation of acid then recorded

▪ Acid rain▪ Anthropogenic air pollution▪ Damage to forests▪ Acidification of soil and water▪ Gaseous and aerosol emissions



518

The insulating effect of body coverage (with the Cobra3 Chem-Unit)The insulating effect of body coverage (with the Cobra3 Chem-Unit)

PrinciplePrinciple

Demonstration of the insulating effect of body coverage.

TasksTasks




P4100340P4100340

The insulating effect of body coverage (with the Cobra3 Basic-Unit)The insulating effect of body coverage (with the Cobra3 Basic-Unit)

P4100311P4100311

1. To prepare curves showing the insulation effect of various body coverage's.2. To discuss the reason of different isolating characteristics.

▪ Insulation effects▪ Body coverage's▪ Coat of animals▪ Fur▪ Wool▪ Feathers



519

The twenty-four-hour rhythm of an aquatic plant (with the Cobra3 Chem-Unit)The twenty-four-hour rhythm of an aquatic plant (with the Cobra3 Chem-Unit)

PrinciplePrinciple

Plants produce oxygen by photosynthesis under the influence of light (during the day). Carbon dioxide is hereby consumed. In the dark (atnight), however, they consume oxygen and produce carbon dioxide.

TasksTasks




P4100840P4100840

1. This day and night rhythm in an aquatic plant has to be followed over a longer period by pH measurements.

▪ Photosynthesis▪ Daylight reaction▪ Dark reaction▪ Diurnal rhythm▪ Nocturnal rhythm▪ pH measurement▪ Carbon dioxide consumption and production



520

The Bergmann rule: heat loss as a function of theThe Bergmann rule: heat loss as a function of thebody surface area and volumebody surface area and volume

Illustration of the heat loss fordifferent relationships betweenvolumeand body surface area, using a modelconsisting of differentsized roundbottom flasks that are filled withwater.




P1351060P1351060

Comparison of the heat capacities of water and soilComparison of the heat capacities of water and soil

PrinciplePrinciple

To prepare comparison curves showing the different heat capacit-ies of water and of land.




P1350960P1350960

TESS and Demo advanced Manual Cobra4 Physics, Chemistry,TESS and Demo advanced Manual Cobra4 Physics, Chemistry,Biology, Everyday ScienceBiology, Everyday Science

01330-0201330-02

Laboratory Experiments Biol., L.V.Laboratory Experiments Biol., L.V.

16506-0216506-02

Impact of the forest type on humidity, temperatureImpact of the forest type on humidity, temperatureand brightnessand brightness

PrinciplePrinciple

Various types of woodland exhibit different sorts of climate data.Temperature, humidity and lighting conditions do not only dependon meteorological factors but also on the nature of the vegetation.The density of the tree canopy determines how much light canpenetrate and therefore affects the temperature. The low densityof vegetation on a managed highland forestry estate (often beechforests at European latitudes) also affects the movement of windsin the forest, which also affects humidity. In this outdoor exper-iment, we will be conducting measurements on various types ofwoodland during the same day and at approximately the sametime in order to eliminate meteorological differences as far as pos-sible.




P1521762P1521762

TESS Cobra4 Environment and outdoorsTESS Cobra4 Environment and outdoors

Equipment and technical dataEquipment and technical dataThe aluminium case for transport and storage contains the followingmaterials:

1 x Cobra4 Mobile-Link, 1 x Cobra4 Sensor-Unit pH, BNC connection,1 x Cobra4 Sensor-Unit Weather: airpressure, humidity, ambient tem-perature, brightness, 1 x Cobra4 Sensor-Unit, Temperature-Semicon-ductor 20...110 °C, 1 x Cobra4 Sensor-Unit Conductivity with perman-ently connected stainless steel, 1 x pH plastic, gel-filled electrode, 1 x100 red pH 4 buffer trays, 1 x 100 pH 10 green buffer trays, 1 x 460 mlcalibration solution for conductance electrode, 1 x protective case forGL 25 pH electrode, 1 x 120 labels, 4 x 100 ml square flange (HDPE), 2x 250 ml PP laboratory beaker, 1 x 1 GB 20 MB/sec SD memory card forCobra4 Mobile-Link, 1 x 110...240 V Charger for metal hybrid batter-ies with Mignon 1.2 V 2700 mAh spare batteries, Delivery incl. CD-ROMwith drivers and data analysis software

12619-8812619-88



521

Conductivity of various water samples (with the Cobra3 Basic-Unit)Conductivity of various water samples (with the Cobra3 Basic-Unit)

PrinciplePrinciple

Determination of conductivity.

TasksTasks




P4100511P4100511

Conductivity of various water samples (with the Cobra3 Chem-Unit)Conductivity of various water samples (with the Cobra3 Chem-Unit)

P4100540P4100540

1. To determine the condutivity of various water samples.2. To discuss the reasons for the big differences in conductivity.

▪ Conductivity of water samples▪ Rainwater▪ Drinking water▪ Aquarium water▪ River water▪ Mineral water▪ Electrolytes waste water▪ Eluvation▪ Contamination by inorganic salts▪ Horizontal/vertical zones

4.2 Ecology and meteorology4.2 Ecology and meteorology4.2.2 Water analysis in the laboratory


522

The pH value of various water samples (with the Cobra3 Chem-Unit)The pH value of various water samples (with the Cobra3 Chem-Unit)

PrinciplePrinciple

Determination of the pH-values.

TasksTasks




P4100640P4100640

The pH value of various water samples (with the Cobra3 Basic-Unit)The pH value of various water samples (with the Cobra3 Basic-Unit)

P4100611P4100611

1. To determine the pH-values of various water samples.2. To discuss the reasons for the big differences in pH-value.

▪ pH of water samples▪ Demineralised water▪ Aquarium water▪ Rainwater▪ Lake water▪ River water▪ Drinking water▪ Mineral water▪ Seasonal and daily fluctuations▪ Buffering effects▪ Poisoning effects for animals



523

We examine our drinking waterWe examine our drinking water

PrinciplePrinciple

Demonstration experiment with wireless transmission of data toa large-size digital display. This experiment shows how much thedrinking water can differ from place to place within the same re-gion. Comparison of tap water with bottled mineral water and dis-

tilled water can yield some surprising results.




P1520063P1520063

The origin of acid rain, complete set (interface version Cobra3The origin of acid rain, complete set (interface version Cobra3Chem-Unit)Chem-Unit)

P1370340P1370340

We visit a wastewater treatment plantWe visit a wastewater treatment plant

PrinciplePrinciple

A visit to a water treatment plant reveals some fascinating proced-ures and purification methods. We will not merely be concerned

with interesting impressions, but instead we will increase our un-derstanding for microbiological processes by measuring the keyparameters: temperature, pH and salinity.






P1521662P1521662

Water quality - contamination with heavy metalsWater quality - contamination with heavy metals

PrinciplePrinciple

Heavy-metal ions may be carried into surface or ground water frommining fields or via the waste water of galvanicor similar produc-tion sites. They block the effect of enzymes so that the processes inthe metabolism of the organisms that are controlled by these en-zymes may be disturbed or prevented. Using urea hydrolysis withthe aid of urease, the blocking of the enzymes by heavy-metal ionscan be measured with common laboratory methods.






P0990162P0990162



524

The pH value of various soilsThe pH value of various soils

PrinciplePrinciple

Demonstration experiment using wireless data communication tosend readings to a large-size display. Knowledge of soil character-istics is highly important for agriculture. To familiarise studentswith this topic, two sub-experiments use pH readings to demon-strate how different soils from different places can be (sub-exper-iment "Characteristic pH values for soils") and how varied the soilcan be down below the surface (sub-experiment "Soil profiles").




P1521063P1521063

Raised bog and fenRaised bog and fen

PrinciplePrinciple

Moorland provides a location for plants specialised for soils withan excess of moisture. Apart from this common feature, moorscan exhibit a great many differences. For instance both raisedboggy moorland and fens count as moorland but they supportquite different communities of plant-life due to the different liv-ing conditions they provide, as we shall see in this experiment.






P1521262P1521262

Salinity of soils and plant substratesSalinity of soils and plant substrates

PrinciplePrinciple

Demonstration experiment using wireless data communication tosend readings to a large-size display. How suitable are certain soilsand plant substrates in terms of plant nutrition? This experimentis concerned with the measurement of conductivity, which givesan indication of which of the studied soils and plant substratesalready contain nutrient salts necessary for the growth of plantsand which ones would be better if nutrients were added in theform of fertiliser. Plants gain their nutrition in the form of saltions from the soil. The most important of the 16 nutrients whichplants need to grow are nitrogen in the form of nitrates and am-monia, phosphorus in the form of phosphates and potassium inthe form of potassium salts. In addition, soils need to have lime(calcium carbonate) to reduce their acidity (reduction in pH). Foragricultural purposes, such nutrients are added to the soil in theform of inorganic fertilisers. For house plants, fertiliser-enrichedpotting soil is used.




P1521163P1521163

TESS advanced Applied Sciences manual Cobra4 environment andTESS advanced Applied Sciences manual Cobra4 environment andoutdoorsoutdoors

12622-0212622-02

TESS and Demo advanced Manual Cobra4 Physics, Chemistry,TESS and Demo advanced Manual Cobra4 Physics, Chemistry,Biology, Everyday ScienceBiology, Everyday Science

01330-0201330-02

4.2 Ecology and meteorology4.2 Ecology and meteorology4.2.3 Soil and air analysis in the laboratory


525

Relative humidityRelative humidity

PrinciplePrinciple

Dew or frost can be formed on the inside of windows, althoughone has the feeling that the air in the room is quite dry. A cellarcannot be dehumidified on warm days in summer by simply open-ing the cellar window. This experiment shows why.




P1520560P1520560



Depending on application type, the Cobra4 Sensor-Unit Weather canbe connected to the Cobra4 Wireless-Link, the Cobra4 Mobile-Link orthe Cobra4USB-Link using a secure and reliable plug-in / lockable con-nection.

BenefitsBenefits

▪ At the same time, the following measuring parameters may berecorded: airpressure, relative humidity, airtemperature, bright-ness, height

▪ Ideal for use in outdoor experiments, on classtrips or for projector school hikingdays.


Relative Humidity:

▪ measurement range 0 - 100 %

▪ accuracy +/- 5 %

Air Pressure:

▪ measurement range 10 - 1100 mbar▪ accuracy +/-5 %

Air Temperature:

▪ measurement range -40 - +125 °C▪ accuracy +/- 0.5 °C

Brightness:

▪ measurement range 0 - 10,000 lx▪ accuracy +/- 5 %▪ calculation using air pressure▪ Data transfer rate for each sensor: 1 Hz▪ Dimensions (L x B x H): 64 x 70 x 31 mm▪ Weight: 60 g

Cobra4 Sensor-Unit Weather: Humidity, AirCobra4 Sensor-Unit Weather: Humidity, Airpressure,Temperature, Light intensity, Altitudepressure,Temperature, Light intensity, Altitude12670-0012670-00


4.2 Ecology and meteorology4.2 Ecology and meteorology4.2.3 Soil and air analysis in the laboratory


526

The daily course of luminosity (with Cobra3 Basic-Unit)The daily course of luminosity (with Cobra3 Basic-Unit)

PrinciplePrinciple

The daily course of luminosity.

TasksTasks

In a 24-hour long-term measurement the course of luminosity is recorded in the immediate vicinity of a window. The dependence on theseason, the geographical location and the current degree of cloudiness, fog etc. has to be discussed.

What you can learnWhat you can learn aboutabout



P4100411P4100411

The daily course of luminosity (with Cobra3 Chem-Unit)The daily course of luminosity (with Cobra3 Chem-Unit)

P4100440P4100440

▪ Long-term measurement▪ Course of luminosity▪ Seasonal influences▪ Geographical location▪ Cloudiness▪ Fog

4.2 Ecology and meteorology4.2 Ecology and meteorology4.2.4 Meteorology


527

Comparison of soil and air temperatures in theComparison of soil and air temperatures in thecourse of a daycourse of a day

PrinciplePrinciple

How does the temperature of the air affect the temperature of thesoil in the course of a day?






P1520962P1520962

Weather observation with the Cobra4 Mobile-LinkWeather observation with the Cobra4 Mobile-Link

PrinciplePrinciple

The compact Cobra4 "Weather" multisensor can be employed as asimple means to setup a weather station, which can then be usedto explain the relationship between the air pressure, humidity,temperature, and the light intensity. The measurement combin-ation of a Cobra4 Mobile-Link and a "Weather" multisensor en-ables single or continuous measurements of these weather para-meters. In the case of a single measurement, the measured value

is read off the display and noted. In the case of continuous meas-urements, the values are stored on an SD card and can then beviewed and analysed with the software "measure for Cobra4".






P1520462P1520462

Terrain mappingTerrain mapping

PrinciplePrinciple

The drawing of maps is one of the favourite tasks of the studentsduring geography lessons and of a high didactic value. The altitudemeasuring function of the Cobra4 Sensor-Unit "Weather" is a user-friendly tool which provides altitude values so that contour linescan be added to maps.






P1520662P1520662



528


PrinciplePrinciple





P1521762P1521762

Relative humidityRelative humidity

PrinciplePrinciple

Dew or frost can be formed on the inside of windows, althoughone has the feeling that the air in the room is quite dry. A cellarcannot be dehumidified on warm days in summer by simply open-ing the cellar window. This experiment shows why.




P1520560P1520560

Comparison of the heat capacities of water and soilComparison of the heat capacities of water and soil

PrinciplePrinciple

To prepare comparison curves showing the different heat capacit-ies of water and of land.




P1350960P1350960

Humidity sensor for Cobra3Humidity sensor for Cobra3


Measurement of relative humidity (RH), absolute humidity and tem-perature with Cobra3 Basic-UNIT.


▪ Humidity Range: 5-95% RH (non-condensing)▪ accuracy: ± 5% RH at 25°C▪ response rate: approx. 15 seconds in moving air at 25°C▪ repeatability: ± 0.5% RH▪ temperature range: 40°C.+85°C▪ accuracy: ± 1°C at 25°C▪ resolution: ± 0.1°C.

12121-0012121-00



529



Depending on application type, the Cobra4 Sensor-Unit Weather canbe connected to the Cobra4 Wireless-Link, the Cobra4 Mobile-Link orthe Cobra4 USB-Link using a secure and reliable plug-in / lockableconnection.

BenefitsBenefits


▪ Idealfor use in outdoor experiments, on classtrips or for projector school hikingdays.


Relative Humidity:

▪ measurement range 0 - 100 %▪ accuracy +/- 5 %

Air Pressure:


Air Temperature:


Brightness:


Cobra4 Sensor-Unit Weather: Humidity, AirCobra4 Sensor-Unit Weather: Humidity, Airpressure,Temperature, Light intensity, Altitudepressure,Temperature, Light intensity, Altitude12670-0012670-00





530

4.3.14.3.1 BehaviourBehaviour 532532

BehaviourBehaviour

4 Biology4 Biology4.3 Behaviour


531

Wall contact searching in miceWall contact searching in mice

PrinciplePrinciple

To record the amount of time spent by mice on a platform with and without walls divided into 49 squares numbered in sequence.

TasksTasks




P4080100P4080100

1. To compare the recorded distribution of staying places with calculated random distribution.2. To calculate the percentage diviation.

▪ Behaviour of mice▪ Search for wall contact▪ Distribution of staying places▪ Random distribution▪ Percentage deviation

4.3 Behaviour4.3 Behaviour4.3.1 Behaviour


532

Learning and marking behaviour of miceLearning and marking behaviour of mice

PrinciplePrinciple

To test the learning process in a simple Y-labyrinth (train to the left and right) and on a complicated high labyrinth.

TasksTasks




P4080200P4080200

Learning performance of humansLearning performance of humans

P4080300P4080300

1. To measure the time taken to cross the maze and the number of errors in relation to previous experience and scent marking.2. To draw learning curves for different labyrinths and animals.

▪ Y-Labyrinth▪ High Labyrinth▪ Operative conditioning▪ Learing curve▪ Marking behaviour



533



534

4.4.14.4.1 Light senseLight sense 5365364.4.24.4.2 Hearing senseHearing sense 5445444.4.34.4.3 Temperature senseTemperature sense 547547

Sensory organsSensory organs

4 Biology4 Biology4.4 Sensory organs


535

Determination of the human visual fieldDetermination of the human visual field

Principle and tasksPrinciple and tasks

Determination of the visual field of the right and left eye for white, blue, red and green. Detection of any visual field deficiency (scotoma).Location of the blind spot (site of optic nerve emergence). The extent of the visual fields of both eyes and the position of the blind spot aredetermined with the aid of a perimeter.




P4070200P4070200

Time resolving capability of the human eyeTime resolving capability of the human eye

P4070300P4070300

▪ Perimeter▪ Visual field (for white, blue, red, green)▪ Field of view▪ Blind spot▪ Scotoma▪ Rods and cones

4.4 Sensory organs4.4 Sensory organs4.4.1 Light sense


536

Human electrooculography (EOG) (with the Cobra3 Basic-Unit)Human electrooculography (EOG) (with the Cobra3 Basic-Unit)

PrinciplePrinciple

To record the changes in the elctrical field induced by eye movements, using electrodes stuck to the skin near the eyes.

TasksTasks

To measure an electrooculogram (EOG) with a practised reader, a less practised (six year old) schoolchild and if possible, a test person whopractises a rapid reading technique. To evaluate the rapid horizontal eye movements (sacchades) and the fixation periods.




P4070511P4070511

▪ Electrical field measurement▪ Eye movements▪ Dipole▪ Sacchades▪ Fixation period▪ Practised reader versus schoolchild▪ Rapid reading techniques



537

Additive colour mixing and colour maskingAdditive colour mixing and colour masking

PrinciplePrinciple

Production of mixed colours and white light by superimposed projection (additive mixing) of red, blue, and green light.

TasksTasks




P4070600P4070600

1. Brightening of the colour spot (white masking) or its surroundings (black masking) by means of white light.

▪ Additive colour mixing▪ Subtractive colour mixing▪ Complementary colour▪ Colour saturation▪ White masking▪ Black masking



538

Test of human reaction capacityTest of human reaction capacity


Measurement of dead time in a reaction test. Analysis of the tansient response. Determination of threshold frequency for stimuli. Study ofthe effects of noise and alcohol on reaction capacity. The test subject should follow a rectangular curve on a slowly rotating drum, using afelt-tip pen inserted into a slit.




P4070400P4070400

▪ Reaction capacity▪ Strobe drum▪ Control loop▪ Feedback reaction▪ Dead time▪ Follow-through time▪ Threshold frequency



539

The effect of gravity and centrifugal force on plantsThe effect of gravity and centrifugal force on plants


To measure the alignment of shoots and roots under the effect of centrifugal forces which are less than, equal to or greater than gravity.To raise sunflower seedlings in small beakers in a rotating drum. To set different centrifugal forces by changing the speed of rotation of thedrum motor.




P4050200P4050200

▪ Positive geotropism of roots▪ Negative geotropism of shoots▪ Centrifugal force▪ Rotational speed▪ Statoliths



540

Optomotor response in insectsOptomotor response in insects

PrinciplePrinciple

Behavioural physiological measurement of the time resolving capacity of the compound eye of flies (without electrophysiological leads).

TasksTasks




P4070100P4070100

1. To determine the ratio of right and left turns made by a fly attached to the centre of a strobe drum. The movements (optomotorresponse) indicate whether or not the fly can resolve the strobe pattern with the drum set at a constant speed.

▪ Optomotor response▪ Time resolving capability▪ Compound eye▪ Strobe drum▪ Pattern frequency▪ Left- and right-hand movements of flies



541

ElectronystagmographyElectronystagmography

PrinciplePrinciple

To record an electrocardiogram (ECG) between the left leg and theright and left arm (lead II according to Einthoven).




TESS advanced Biologie Handbuch Cobra4 Elektrophysiologie:EKG,EMG, EOG12673-1112673-11

TESS advanced Biology manual Cobra4 Electrophysiology: ECG, EMG,EOG12673-1212673-12 English

P0873560P0873560






TESS beginner natural sciences set SensesTESS beginner natural sciences set Senses

Function and ApplicationsFunction and ApplicationsSet for student experiments, especially suitable for teaching of naturalsciences in primary school and early secondary school.

15 experiments are described:

▪ The tongue in the mirror▪ Teamwork: how nose and tongue provide for taste▪ A matter of taste: where does one taste what?▪ Investigating skin▪ Sense of touch▪ Warm and cold▪ Sound waves▪ Music▪ Orientation in space▪ A view at the eye▪ Close and far▪ Candle on its head▪ The blind spot▪ Two eyes see more than one▪ Optical illusions

BenefitsBenefits

▪ Contains all necessary materials and description in a sturdy stor-age

▪ Included german handbook in color, DIN A5, ring binder▪ Additional set for demonstration experiments and handbook with

hints for teachers available.


▪ TESS manual No. 13242-02, english▪ supplementary set DEMO beginner set Senses, 13242-88

13241-8813241-88

TESS Biology Set Electrophysiology EPTESS Biology Set Electrophysiology EP



542


Complete instrument set and accessories to perform computer-assis-ted experiments in human and animal physiology of heart, muscle,eye.


▪ Wireless transmitter and receiver units to connect to the electro-physiology sensor and to a PC, can also be used for others sensorsto measure parameters common in physics, chemistry, biologyand medical education

▪ electrophysiology sensor-unit for ECG, EMG and EOG with connect-ors for three measurement leads

▪ three separate and shielded leads, color-coded (red, yellow,green) with 3.5 mm phone jacks to connect to the sensor-unitand 2 mm jacks to connect to reusable and disposable electrodes

▪ three reusable stainless steel ECG electrodes, contact area 30 x 80mm with connector for leads

▪ three reusable EMG electrodes with cable and 2 mm connectors▪ disposable electrodes (100/pkg),▪ three crocodile clips for disposable electrodes, electrode gel to

improve contact between electrodes and skin▪ software for wireless and wired data acquisition, for data ana-

lysis,automatic sensor recognition, automatic setup of measure-ment parameters and integrated experiment instructions

▪ 68-page manual in German language with experimental literat-ure

▪ storage box for instrument set and accessories.

TESS Biology Set Electrophysiology EPTESS Biology Set Electrophysiology EP12673-8812673-88

TESS advanced Biology manual Cobra4 Electrophysiology: ECG,TESS advanced Biology manual Cobra4 Electrophysiology: ECG,EMG, EOGEMG, EOG12673-1212673-12

Three colour lampThree colour lamp


For color mixing experiments in conjunction with brightness plate.

BenefitsBenefits

▪ The three-colour lamp consists of three independent light sourcesof particularly high luminosity, mounted next to each other on acommon support stand

▪ The three-colour lamp can be so adjusted, that the images it pro-jects are completely separate, partly overlap (e. g. foradditive col-our mixing) or completely overlap (as for colour masking)

▪ The filter slots accept up to three colourfilters placed one behindthe other

▪ The image widths extend from a minimum of 50cm to severalmeters.


▪ 3 halogen light bulbs, each with 12 V/50 W

▪ cable 3-pole▪ diode plug

13760-0013760-00

Brightness adjuster for 13760-88Brightness adjuster for 13760-88

Function und ApplicationsFunction und Applications

Adjusting unit for a continuous variation of the intensity of illumina-tion.


▪ 3 outputs 0...12 V DC/4 A (diode sockets)▪ Mains voltage 230 V/50 Hz▪ housing dimensions (mm) 230×236×168▪ weight: 5,3 kg

13760-9313760-93

Strobe drumStrobe drum


To produce moving stimuli for the investigation of the resolving powerof the eye, for testing human reaction capacity and as a type of cent-rifuge for investigating the effects of mass acceleration on plants andanimals.


▪ Diameter: 32 cm▪ Circumference: 100 cm▪ Height: 20 cm▪ Pattern: 180 black stripes▪ With drive belt

65976-0065976-00



543

Hearing threshold and frequency differentiating threshold in humans (with the Cobra3 Basic-Unit)Hearing threshold and frequency differentiating threshold in humans (with the Cobra3 Basic-Unit)





P4040211P4040211

1. Determine the hearing threshold for a number of frequencies in the hearing range of humans and plot a hearing threshold curve.2. Determine the frequency difference between two sounds of the same intensity which can just still be perceived as two different

sounds (frequency differentiating threshold). Plot a curve of the frequency differentiating threshold.

▪ Hearing threshold curve▪ Frequency differentiation thresholds▪ Hearing range

4.4 Sensory organs4.4 Sensory organs4.4.2 Hearing sense


544

Acoustic orientation in space (with the Cobra3 Basic-Unit)Acoustic orientation in space (with the Cobra3 Basic-Unit)

Principles and tasksPrinciples and tasks

To localize a source of sound using an artificial head. To measure the time difference and the difference in intensity of the sound wavesincident on each ear of the artificial head.




P4040311P4040311

▪ Spatial orientation▪ Artificial head▪ Acoustic probes▪ Threshold angle▪ Travelling time difference



545

Sine wave generator, 10 Hz - 20 KHzSine wave generator, 10 Hz - 20 KHz


For generation of sine wave signals for audiometry und acoustics.

BenefitsBenefits

Connection for head phone (jacksocket) and loud speaker (4 mm out-put sockets), 4-digit digital display, Cut-off switch for the headphone


3 Frequency ranges: 10...200 Hz100...2000 Hz1...20 kHz, Max. outputvoltage:0...6 V for 4 Ohm0...10 V for > 20 Ohm, Output power: 1 W for4 Ohm, Distortion factor (typical):< 1% for 1 kHz, Supply voltage:230V AC/50...60 Hz

65960-9365960-93

Artificial head w/o microphonesArtificial head w/o microphones

65975-0165975-01

Measuring microphone w.amplifierMeasuring microphone w.amplifier


Electret capsule with 1.5 m long cable suitable for special investiga-tions, e.g. point shaped plotting of soundfields.


Frequency range 30 Hz ... 20 kHz, Sensitivity 6.0 mV/Pa at 1 kHz, Gain0 ... 1000 in phase with sound signal, Signal output 4V max. at 3Ohm, Dimensions: (mm) 120 x 25 x 60

Required accessoryRequired accessory

9 V battery

03543-0003543-00



546

Changes in the blood flow during smoking (with the Cobra3 Chem-Unit)Changes in the blood flow during smoking (with the Cobra3 Chem-Unit)

Principle and exercisesPrinciple and exercises

This experiment records how skin temperature changes with time when someone is smoking with the help of a temperature sensor and theCobra3 interface.How the temperature curve differs should be discussed with reference to the tested persons' regular smoking habits.


Skin temperature, Heavy and moderate smokers, Occasional smokers, Non-smokers



P4020440P4020440

Regulation of human body temperature (with the Cobra3 Basic-Unit)Regulation of human body temperature (with the Cobra3 Basic-Unit)


To prepare curves demonstrating the regulation of body temperature. To discuss different curves depending on the conditions at the hand ofthe test person.


Body temperature regulation, Radiation, Evaporation, Skin temperature, Heating/cooling effects



P4060311P4060311

4.4 Sensory organs4.4 Sensory organs4.4.3 Temperature sense


547

Preferential temperature in insectsPreferential temperature in insects


To test the temperature demands of poikilothermic animals. Using their thermoreceptors the animals recognize the temperature which suitsthem, gather in an area at the corresponding temperature (thermotaxis) and thus show their preferred temperature. To produce a tem-perature gradient between approximately 45°C and 10°C using a ring shaped temperature organ. To record the positions of the individualanimals.




P4060200P4060200

Effect of the soil temperature on the germination and growth of higher plantsEffect of the soil temperature on the germination and growth of higher plants

P4060100P4060100

▪ Temperature optimum▪ Poikilothermic animals▪ Thermotaxis▪ Phototaxis▪ Thigmotaxis▪ Torpor▪ Environmental requirements▪ Geographical seperation

4.4 Sensory organs4.4 Sensory organs4.4.3 Temperature sense


548

4.5.14.5.1 Experiments with functional modelsExperiments with functional models 5505504.5.24.5.2 Real ExperimentsReal Experiments 556556

Nerves and musclesNerves and muscles

4 Biology4 Biology4.5 Nerves and muscles


549

Model experiment illustrating the development of resting potential (with Cobra4)Model experiment illustrating the development of resting potential (with Cobra4)


The potential difference between two electrolyte concentrations separated by a membrane (cellophane or cation permeable) is detected bytwo silver chloride electrodes and measured with a mV meter. The measured and calculated values are compared.

What we can learn aboutWhat we can learn about



P4010462P4010462

▪ Selective ion permeability of membranes▪ Resting potential▪ Diffusion potential▪ Asymmetry potential▪ Silver chloride electrodes▪ Ion pump

4.5 Nerves and muscles4.5 Nerves and muscles4.5.1 Experiments with functional models


550

Neurobiology: the nerve cellNeurobiology: the nerve cell


To use a nerve function model to study the following aspects of a nerve cell: intercellular potential and actionpotential.

What you can learnWhat you can learn aboutabout



P4010711P4010711

▪ Comparison between low and high threshold levels▪ Comparison between low and high stimulus levels▪ Membrane time constant and low passfiltering▪ Membrane time constant▪ Low-pass filtering▪ Excitatory Synapse▪ Depolarisation▪ Temporal summation▪ Spatial summation▪ Synaptic amplification by terminal branches▪ Effect of decreasing stimulus▪ Hebbian synapse▪ Synaptic learning and forgetting▪ Inhibitory synapse▪ Hyperpolarization▪ Spacial inhibitory-excitatory summation▪ Veto synapse



551

Neurobiology: nerve cell interactionsNeurobiology: nerve cell interactions

PrinciplePrinciple

To use a nerve function model to study the following aspects of nerve cell interactions with other nerve cells or with motoric and sensoriccells:

Renshaw inhibtion

Neuronal principles of classic conditioning



P4010811P4010811

Neurobiology: neural networksNeurobiology: neural networks

P4010911P4010911

▪ Motoneuron signals with recurrent inhibition by Renshaw cell▪ Motoneuron signals without recurrent inhibition▪ Functional characteristics of Renshaw inhibition

▪ Lateral inhibition▪ Contrast improvement

▪ Conditioned reflex▪ Reversed stimulus succession does not bring about a conditioned reflex



552

Cobra4 Sensor-Unit pH, BNC connectionCobra4 Sensor-Unit pH, BNC connection



Benefits:Benefits:

▪ It can be fitted with a pH probe or Redoxmeasuring chain, in or-der to measure pH or potential values.

▪ The unit can be connected to the Cobra4 Wireless-Link, the Co-bra4 Mobile-Link or the Cobra4 USB-Link using a secure and reli-able plug-in / lockable connection.

Equipment and technicla data:Equipment and technicla data:

pH:

▪ Measuring range: 0...14pH▪ Resolution: 0.01K▪ Measuring accuracy: ± 0.5%

Potential:

▪ Measuring range: -2000...+2000 mV▪ Resolution: 0.1 mV▪ Measuring accuracy: ± 0.5%▪ Data flow rate: 5 Hz▪ Dimensions: approx. 62 mm x 63 mm▪ Weight: 70 g

Cobra4 Sensor-Unit pH, BNC connectorCobra4 Sensor-Unit pH, BNC connector12631-0012631-00


Labortory Experiments Biol., L.V.Labortory Experiments Biol., L.V.16506-0216506-02

Ussing chamberUssing chamber


Ussing chamber, two polystyrene tubes with acrylic glass windows andflanges which can be screwed together.


▪ Each container with abore for electrodes.▪ vascular content 120ml▪ measuring surface approx. 7 cm²

Ussing chamberUssing chamber65977-0065977-00

Membrane, permeable for cations, 5pcsMembrane, permeable for cations, 5pcs31504-0231504-02

Reference electrode, AgClReference electrode, AgCl


Recommended accessories for the measurement of electrochemicalpotentials in pH/potential measurements.

BenefitsBenefits

▪ Equipped with refillable Ag/AgCl electrolyte▪ Suitable for use in conjunction with measuring electrodes (e.g.

45206-00) for pH, redox potential and ion-selective measure-ments


▪ Electrode with glass shaft and ceramic diaphragm▪ Shaft diameter: 12 mm▪ Shaft length: 120 mm▪ Temperature range: -5 ... +80°C▪ Cable length: 1 m

18475-0018475-00

Neurosimulator HandbookNeurosimulator Handbook

01191-0201191-02



553

Neurobiology Lab, 230 VNeurobiology Lab, 230 V


Complete instrument set consisting of neuron unit, operating unit,computer interface, measure software for data acquisition and ana-lysis, diverse cables, experiment manual describing 31 experiments.

BenefitsBenefits

▪ With the instrument set 13 experiments covering the topic "nervecell" can be performed.

▪ Optional upgrade available to perform additional experimentsabout nerve cell interactions and neuronal networks.


▪ Computer interface: 7 measurement inputs (5 analog and 2 digit-al inputs)

▪ one voltage output (5V and 0.2A) with 4mm sockets▪ sampling rate 500 kHz and online frequency analyser.

Operating unit:

▪ 4 output channels which generate "muscle and sense signals",also serves as supply power to operate up to 4 neuron units.

Neuron unit:

▪ simulates a generalised nerve cell with an apical dendrite and itssynaptic contacts, a cell body (soma) and a nerve fibre (axon) withmyelin sheathes and a Ranvier's ring.

▪ The dendrite comprises exciting, inhibiting, presynaptic andHebbian synapses which are marked by the corresponding coloursof the sockets.

▪ Here the axons end in presynaptic buttons.▪ These are represented together with a part of the (afferent) fibre

providing the signal.▪ The connection between the (efferent) axon of a neuron unit

which leads away or the stimulus output socket of the operatingunit and a synapse is established by means of a white cable whichis inserted into the desired synapse socket.

▪ The yellow sockets serve for the derivation of the state of excite-ment of the simulated neuron.

▪ They are connected to a computer interface.▪ The action potentials can be made audible with the aid of the in-

tegrated acoustic monitor.▪ The turning knob "S"serves for setting the "firing threshold" of

the neuron.

65963-1165963-11

Neuro-simulatorNeuro-simulator


The neuron unit Neurosimulator simulates a generalised nerve cellwith an apical dendrite and its synaptic contacts, acell body (soma)and a nerve fibre (axon) with myelin sheathes and a Ranvier's ring.

BenefitsBenefits

▪ The dendrite comprises exciting, inhibiting, presynaptic andHebbian synapses which are marked by the corresponding coloursof the sockets

▪ here the axons end in presynaptic buttons▪ these are represented together with a part of the (afferent) fibre

providing the signal▪ the connection between the (efferent) axon of a neuron unit

which leads away or the stimulus output socket of the operatingunit and a synapse is established by means of a white cable whichis inserted into the desired synapse socket

▪ the yellow sockets serve for the derivation of the state of excite-ment of the simulated neuron

▪ they must be connected to suitable measuring instruments(e.g.oscilloscope) or a computer interface

▪ the action potentials can be made audible with the aid of the in-tegrated acoustic monitor

▪ the turning knob "S" serves for setting the "firingthreshold" ofthe neuron.


Neurosimulator

1 Set of connecting cords:

▪ Connection pipe, 6 cm, white▪ Connection pipe, 15 cm, white▪ Connection pipe, 50 cm, white▪ Connection pipe, 50 cm, yellow▪ Signal cable, 35 cm, grey

Required AccessoriesRequired Accessories

Operating device for the generation of stimuli and to power

65963-0065963-00



554

Neuro-simulator, power supplyNeuro-simulator, power supply


The operating unit comprises the power supply of up to four neuronunits, three touch simulators with a variable stimulating intensityand an opticsensor.

BenefitsBenefits

▪ The three touch simulators comprise a key button and a turningknob which serves for adjusting the intensity of stimulation (orthe height of theprovided signal).

▪ The sign al is supplied as long as the stimulationkey remainspressed.

▪ The light sensitive photo sensor allows the simulation of a simpleeye showing light dark signal.


▪ Voltage output: + 9 V (for 4 Neurosimulator units maximum)▪ Stimulus outputs 0...7 V▪ Offset output -7 V▪ Operating voltage 230 V, 50...60 Hz

65963-9365963-93

Additional nerve cellAdditional nerve cell

65963-1065963-10



555

Recording of nerve potentials after the electrical stimulation of an anaesthetised earthworm (with theRecording of nerve potentials after the electrical stimulation of an anaesthetised earthworm (with theCobra3 Basic-UnitCobra3 Basic-Unit


To work on the following themes by measuring nerve and muscle potentials:

The action of an anaesthetic, The different conduction velocities of median and lateral giant fibres, Refractory period of the median giantfibre

What you can lern aboutWhat you can lern about

Nerve and muscle potentials, Electrical stimulation, Anaesthetization of muscles, Electrical resistance of nerve fibres, Double pulse stimula-tion, Refractory period



P4010311P4010311

Recording of nerve and muscle potentials by mechanical stimulation at the rear end of an earthworm (Cobra3)Recording of nerve and muscle potentials by mechanical stimulation at the rear end of an earthworm (Cobra3)P4010111P4010111

Recording of nerve and muscle potentials by mechanical stimulation at the front end of an earthworm (Cobra3)Recording of nerve and muscle potentials by mechanical stimulation at the front end of an earthworm (Cobra3)P4010211P4010211

4.5 Nerves and muscles4.5 Nerves and muscles4.5.2 Real Experiments


556

Human electrocardiography (ECG) (with the Cobra3 Basic-Unit)Human electrocardiography (ECG) (with the Cobra3 Basic-Unit)


To record an electrocardiogram (ECG) between the left leg and the right and left arm (lead II according to Einthoven). To relate the ECGsegments to the course of heart contraction (P wave, P-Q segment, QRS complex, T wave).




P4020111P4020111

Electromyography (EMG) on the upper arm (with the Cobra3 Basic-Unit)Electromyography (EMG) on the upper arm (with the Cobra3 Basic-Unit)

P4030111P4030111

▪ Electrocardiogram according to Einthoven II▪ Heart rate▪ Quiet and strained heart▪ ECG segments▪ Atria▪ Ventricles▪ AV nodes



557

Muscle stretch reflex and determination of the conducting velocity (with Cobra3 Basic-Unit)Muscle stretch reflex and determination of the conducting velocity (with Cobra3 Basic-Unit)


To trigger a stretch reflex in the lower leg musculature by tapping the Achilles tendon (Achilles tendon reflex). To record the compound actionpotential and determine the reflex latency and the conduction velocity.




P4030211P4030211

Human electrooculography (EOG) (with the Cobra3 Basic-Unit)Human electrooculography (EOG) (with the Cobra3 Basic-Unit)

P4070511P4070511

▪ Electromyogram▪ Muscle stretch reflex▪ Achilles tendon▪ Reflex latency▪ Conduction velocity▪ Jendrassik effect▪ Facilitation



558

We investigate our muscular power -We investigate our muscular power -electromyographyelectromyography

PrinciplePrinciple







P1350360P1350360

Demo advanced Chemistry / Biology Manual Cobra3 (C3BT)Demo advanced Chemistry / Biology Manual Cobra3 (C3BT)

01320-0201320-02

Biological amplifierBiological amplifier


With the aid of this biological amplifier a wide range of electro-physiological experiments can be carried out on human beings, in-sects and earthworms.

The frequency range for the measurement can be pre selected tomatch the different biological current sources as in ECG, EMG, EEG,EOG, ENG.


▪ Trigger input R < 220 Ohm▪ Trigger output 5 V (TTL), 5 µs leading▪ Operating voltage 230 V ± 50 -60 Hz▪ Housing dimensions (cm) 20×14×13▪ Differential amplifier Input resistance 10 MOhm▪ Input voltage 10 µV...100 mV▪ Amplification stages ×100, ×1000▪ Frequency ranges of types of measurement:

EEG, ENG, EOG 1...25 Hz▪ ECG, ERG 0.5...75 Hz▪ EMG 80 Hz...5 kHz▪ Output voltage 10 V▪ max Output resistance < 1 kOhm

65961-9365961-93

Stimuli generatorStimuli generator


The stimuli generator supplies square pulses of variable amplitudeand pulse width, as a single pulse or double pulse (at a variable in-terval).

BenefitsBenefits

▪ A simple push on the start button triggers either a single or adouble pulse.

▪ The instrument is primarily used for electrophysiological experi-ments and serves to trigger bioelectric signals such as action po-tentials.

▪ Two outputs are available for stimulation of the experimentalanimal and simultaneous measurement and presentation of thestimulating voltage.


▪ Amplitude 0...9 V▪ Pulse width 0...1 ms▪ Double pulse spacing 0...10 ms▪ Pulse triggering manual▪ Operating voltage 230 V + 6%/ -10%,50-60 Hz▪ Power consumption 3.5 VA▪ Safety fuse M 0.05 A▪ Housing dimensions (cm) 20×14×13

65962-9365962-93



559

Earthworm experiment chamberEarthworm experiment chamber


The earthworm experiment chamber is used for non-harming neuro-physiological experiments on earthworms. The worm is placed in achannel which can be closed by an acrylic glass cover, which has holesin it for inserting a bristle etc. The channel in which the worm lieshas along row of 23 pin electrodes which can be connected to thebiological amplifier by means of special cables. The experimental datais displayed either on a computer screen or by a storage oscilloscope.The experiment does not harm the earthworm in any way. Much in-formation can be obtained by using the worm as it is and irritating itwith a softbristle. Some phenomena can only be measured, or at leastbe better measured, however, using electrical stimulation (requires astimuli generator). For this it is necessary to anaesthetise the wormfor a short time.


▪ Dimensions (cm) 32×6×4

65981-2065981-20

Stimulus bristle, triggeringStimulus bristle, triggering

Equipment and technical dataEquipment and technical data▪ connecting cable 1 m, with two 4 mm plugs▪ with switch key for triggering the biological amplifier

65981-2165981-21

TESS Biology Set ElectrophysiologyTESS Biology Set Electrophysiology


Basic apparatus set for the implementation of computer-supported,standard experiments on the following subjects: We examine ourheartbeat (electrical cardiography); we determine our heart fre-quency; we examine our anatomical fitness (the heart under loading);we examine our physical strength (electromyography); we measure oureye movements (electro-oculography); we measure our reading rate(reading competence), electronystagmography


Shielded leads for electrophysiology, color-coded, 3/pkgShielded leads for electrophysiology, color-coded, 3/pkg12673-0112673-01

Electrodes for ECG Sensor, 100 pcs.Electrodes for ECG Sensor, 100 pcs.12559-0112559-01

Crocodile clips for disposable electrodes, 3/pkgCrocodile clips for disposable electrodes, 3/pkg12673-0212673-02

Labortory Experiments Biol., L.V.Labortory Experiments Biol., L.V.

16506-0216506-02

Cobra4 Sensor-Unit Electrophysiology: EKG, EMG, EOGCobra4 Sensor-Unit Electrophysiology: EKG, EMG, EOG


To perform electrophysiological, noninvasive, measurements of heart,eye and muscle activities.

BenefitsBenefits

▪ The measurement electrodes are connected to 3,5-mm jacks us-ing three separate and shielded measurement cords.

▪ The sensor can be connected to a PC wirelesslink or to a USB-port.▪ Requires measurement cords and ECG and/or EMG/EOG electrodes.


▪ Measurement mode: permanent measurement▪ Operation with three separate and shielded measurement cords▪ Maximum data through put: 1000 Hz▪ Signal filter: ECG filter: 0,03 Hz to 20 Hz with 450-fold magnific-

ation, EMG filter: 80 Hz to 5000 Hz with 1600-fold magnification,EOG filter: 0,03 Hz to 10 Hz with 800-fold magnification

▪ Galvanic separation with 4000 V▪ Dimensions: 62 mm x 110 mm x 35 mm▪ Weight: 0.3 kg

12673-0012673-00



560

4.6.14.6.1 RespirationRespiration 5625624.6.24.6.2 Blood circulationBlood circulation 565565

Respiration and circulationRespiration and circulation

4 Biology4 Biology4.6 Respiration and circulation


561

Volumetric measurement of breathing in small animalsVolumetric measurement of breathing in small animals

PrinciplePrinciple

Volumetric measurement of the oxygen consumption of an animal enclosed in a temperature-controlled spirometer. Absorption of the ex-haled carbon dioxide using concentrated potassium hydroxide solution.

TasksTasks




P4090100P4090100

1. Measure the oxygen consumption of insects in relation to ambient temperature and body weight.

▪ Oxygen consumption▪ Volumetric measurement▪ Respirometer▪ Carbon dioxide consumption▪ Compensation vessel▪ Q10 value

4.6 Respiration and circulation4.6 Respiration and circulation4.6.1 Respiration


562

Measurement of the human respiratory rate (with the Cobra3 Basic-Unit)Measurement of the human respiratory rate (with the Cobra3 Basic-Unit)


The number of inhalations per unit time is dependent on many factors, such as capacity of the lungs, health condition and activity.

TasksTasks




P4090211P4090211

1. The respiratory frequencies before and after bodily exertion are to be measured and compared.

▪ Respiratory frequency▪ Chest pressure measurement▪ Breathing in resting postion▪ In slight and strong exertion▪ Eupnea▪ Diaphragmatic and thoracic respiration



563

Cobra4 Sensor-Unit SpirometryCobra4 Sensor-Unit Spirometry

Function and ApplicationFunction and Application

The Cobra4 Sensor Unit Spirometry is used for the measurement of the breath-dependent pulmonary volume.

BenefitsBenefits

Through the possibility of the recording of measurement one receives a diagram by means of which different function varaibles of the breathvolume can be determined. The Cobra4 Sensor Unit Spirometry can be connected to the Cobra4 Wireless Link, the Cobra4 Mobile Link or the Co-bra4 USB Link through a secure and reliable plug-in / lockable connection. The data can be measured and displayed in student or demonstrationexperiments with or without PC.


12675-0012675-00

▪ measuring range (accuracy): -15... +15 l/s (3 %)



564

Human electrocardiography (ECG) (with the Cobra3 Basic-Unit)Human electrocardiography (ECG) (with the Cobra3 Basic-Unit)


To record an electrocardiogram (ECG) between the left leg and the right and left arm (lead II according to Einthoven). To relate the ECGsegments to the course of heart contraction (P wave, P-Q segment, QRS complex, T wave).




P4020111P4020111

▪ Electrocardiogram according to Einthoven II▪ Heart rate▪ Quiet and strained heart▪ ECG segments▪ Atria▪ Ventricles▪ AV nodes

4.6 Respiration and circulation4.6 Respiration and circulation4.6.2 Blood circulation


565

Phonocardiography: Cardiac and vascular sonic measurement (PCG) (with the Cobra3 Basic-Unit)Phonocardiography: Cardiac and vascular sonic measurement (PCG) (with the Cobra3 Basic-Unit)

Principle and tasks:Principle and tasks:

Cardiac and vascular sonic measurement at different locations of the circulatory system. Measurement of the pulse rate at different levels ofathletic loading.

What you can learn about:What you can learn about:



P4020211P4020211

▪ Pulse▪ Throat and chest sonic measurement▪ Quiet and strained heart▪ Contracting tune▪ Systole▪ Flapping sound▪ Diastole



566

Blood pressure measurement (with the Cobra3 Basic-Unit)Blood pressure measurement (with the Cobra3 Basic-Unit)


To prepare a plot of blood pressure measurement and to read the values of systolic and diastolic blood pressure.




P4020311P4020311

Changes in the blood flow during smoking (with the Cobra3 Chem-Unit)Changes in the blood flow during smoking (with the Cobra3 Chem-Unit)

P4020440P4020440

▪ Systolic blood pressure▪ Diastolic blood pressure▪ Measuring cuff▪ Blood pulse waves



567

We investigate our heartbeat - electrocardiographyWe investigate our heartbeat - electrocardiography

PrinciplePrinciple







P1332760P1332760

Cobra4 Sensor-Unit Electrophysiology: EKG, EMG, EOGCobra4 Sensor-Unit Electrophysiology: EKG, EMG, EOG


To perform electrophysiological, noninvasive, measurements of heart,eye and muscle activities.

BenefitsBenefits

▪ The measurement electrodes are connected to 3,5-mm jacks us-ing three separate and shielded measurement cords.

▪ The sensor can be connected to a PC wirelesslink or to a USB-port.

▪ Requires measurement cords and ECG and/or EMG/EOG electrodes.


▪ Measurement mode: permanent measurement▪ Operation with three separate and shielded measurement cords▪ Maximum data through put: 1000 Hz▪ Signal filter:

1. ECG filter: 0,03 Hz to 20 Hz with 450-fold magnification2. EMG filter: 80 Hz to 5000 Hz with 1600-fold magnification3. EOG filter: 0,03 Hz to 10 Hz with 800-fold magnification

▪ Galvanic separation with 4000 V▪ Dimensions: 62 mm x 110 mm x 35 mm▪ Weight: 0.3 kg

12673-0012673-00

Cobra4 Sensor-Unit PulseCobra4 Sensor-Unit Pulse

FunctionFunction

Sensor of the Cobra4 family for measuring the heart rate on the earor finger. Measurement of the signal amplitude and the heart rate.

All Cobra4 sensors can be connected directly to the Cobra4 Wireless-Link, the Cobra4 Mobile-Link or the Cobra4 USB-Link using a secureand reliable plug-in/lockable connection.

Technical specifications:Technical specifications:

▪ Range 40...240 pulses/minute▪ Accuracy 2%▪ Including ear clip (cable length: 1 m)▪ Digital and graphical display of theheart rate▪ Size: 60 x 70 x 35 mm▪ Weight: 100 g

Cobra4 Sensor-Unit Pulse, Heart rate, incl. ear clipCobra4 Sensor-Unit Pulse, Heart rate, incl. ear clip12672-0012672-00

Ear clip for Cobra4 Sensor-Unit PulseEar clip for Cobra4 Sensor-Unit Pulse12672-1012672-10

TESS advanced Biology manual Cobra4 Electrophysiology: ECG,TESS advanced Biology manual Cobra4 Electrophysiology: ECG,EMG, EOGEMG, EOG

12673-1212673-12



568

TESS Biology Set Electrophysiology EPTESS Biology Set Electrophysiology EP




▪ Wireless transmitter and receiver units to connect to the electro-physiology sensor and to a PC, can also be used for others sensorsto measure parameters common in physics, chemistry, biologyand medical education




▪ three reusable EMG electrodes with cable and 2 mm connectors▪ disposable electrodes (100/pkg)▪ three crocodile clips for disposable electrodes, electrode gel to



▪ 68-page manual in German language with experimental literat-ure

▪ storage box for instrument set and accessories.

12673-8812673-88

Experiment kit artificial blood to determine blood groups ABExperiment kit artificial blood to determine blood groups ABand Rhand Rh64241-0064241-00

Refill pack f. experiment kit "artificial blood"Refill pack f. experiment kit "artificial blood"64241-0164241-01

Blood grouping, stud.kitBlood grouping, stud.kit87973-0087973-00

Eldon cards for Blood groupingEldon cards for Blood grouping87973-0187973-01

Blood grouping ABO+Rh, student kit for 50 determinationsBlood grouping ABO+Rh, student kit for 50 determinations87973-2087973-20



569



570

4.7.14.7.1 Food analysis and productionFood analysis and production 5725724.7.24.7.2 Digestion, excretionDigestion, excretion 574574

Our food - analysis, production, digestionOur food - analysis, production, digestion

4 Biology4 Biology4.7 Our food - analysis, production, digestion


571

Dissolved components in different watersDissolved components in different waters

Drinking water is one of the most important things our bodiesneed. Dissolved salts in various samples of water, mineral water,tap water, rain water, etc. are invisible but they can in certaincircumstances greatly affect the quality of the water and its taste.Such contents can be brought to light by allowing the water itselfto evaporate. This allows for a qualitative comparison of the saltcontents in the various water samples.


TESS Chemie Handbuch Allgemeine und anorganische Chemie 101835-0101835-01 German

TESS Chemistry manual Inorganic Chemistry 101835-0201835-02 English

TESS advanced Química manual Química Generale Inorgánica 101835-0401835-04 Spanish

TESS Chemie Handbuch Chemie01841-0101841-01 German

TESS Chemistry manual Chemistry01841-0201841-02 English

TESS advanced Química manual Química General,Inorgánica e Or-gánica01841-0401841-04 Spanish

P1027200P1027200

Alcoholic fermentationAlcoholic fermentation

Parallel experiments will be conducted to compare the fermenta-tion of fruit juice and sugar solution using wine yeast. The speedof fermentation of the sugar solution can be increased by addingminerals. The fermentation tube can be placed on top of a varietyof vessels with a neck capable of accommodating rubber stopper ofsize SB29. It is filled with calcium hydroxide solution and exhibitsformation of CO2 when the solution becomes turbid.


TESS Chemie Handbuch Organische Chemie01837-0101837-01 German

TESS Chemistry manual Organic Chemistry01837-0201837-02 English

TESS Chemie Handbuch Chemie01841-0101841-01 German

TESS Chemistry manual Chemistry01841-0201841-02 English

TESS advanced Química manual Química General,Inorgánica e Or-gánica01841-0401841-04 Spanish

P1037800P1037800

4.7 Our food - analysis, production, digestion4.7 Our food - analysis, production, digestion4.7.1 Food analysis and production


572






TESS advanced Biology manual students experimentsTESS advanced Biology manual students experiments

01845-0201845-02

TESS Chemistry Food Chemistry setsTESS Chemistry Food Chemistry sets


The chemistry equipment system Food Chemistry consists of 2 inter-dependent equipments sets which are required to perform 52 exper-iments.

TESS Chemistry set 5 Food ChemistryTESS Chemistry set 5 Food Chemistry13294-8813294-88

TESS Chemistry set 2 Basic SetTESS Chemistry set 2 Basic Set13298-8813298-88

TESS Chemistry manual Food ChemistryTESS Chemistry manual Food Chemistry

01839-0201839-02

Demo advanced Chemistry / Biology Manual Cobra3 (C3BT)Demo advanced Chemistry / Biology Manual Cobra3 (C3BT)

01320-0201320-02

4.7 Our food - analysis, production, digestion4.7 Our food - analysis, production, digestion4.7.1 Food analysis and production


573

Glycolysis (temperature measurement) (with the Cobra3 Chem-Unit)Glycolysis (temperature measurement) (with the Cobra3 Chem-Unit)

PrinciplePrinciple

Glykolyse (measurement of temperature)

TasksTasks




P4110540P4110540

1. To depict the increase in temperature, which results, when yeast cells ferment sugar.2. To compare the temperature curves of the solutions with and without yeast.

▪ Glycolysis▪ Yeast fermentation of sugar▪ Temperature measurement▪ Respiration energy

4.7 Our food - analysis, production, digestion4.7 Our food - analysis, production, digestion4.7.2 Digestion, excretion


574

Determination of the Michaelis constant (with the Cobra3 Chem-Unit)Determination of the Michaelis constant (with the Cobra3 Chem-Unit)

PrinciplePrinciple

The enzymatic hydrolysis of urea in aqueous solution liberates carbon dixide and ammonia. The ions of these compounds increase the con-ductivity of the solution. Conductivity measurements can so be made to determine the rate of hydrolysis of urea by the enzyme urease atvarious substrate concentrations.

TasksTasks




P4120340P4120340

Determination of the Michaelis constant (with the Cobra3 Basic-Unit)Determination of the Michaelis constant (with the Cobra3 Basic-Unit)

P4120311P4120311

1. The Michaelis constant can then be calculated from these values.

▪ Michaelis constant▪ Enzymatic hydrolysis of urea▪ Conductivity measurement▪ Bodenstein principle▪ Enzyme-substrate complex▪ Lineweaver-Burk plot



575

The enzymatic activity of catalase (with the Cobra3 Basic-Unit)The enzymatic activity of catalase (with the Cobra3 Basic-Unit)

PrinciplePrinciple

Determination of the enzymatic activity of catalase.

TasksTasks




P4120611P4120611

1. The examine the enzymatic decomposition of hydrogen peroxide, a cell respiratory poison, in the liver.2. To investigate the influence of the temperature and pH on the metabolic activity.

▪ Enzyme catalase▪ Decomposition of H2O2▪ Poisonous by-product of cell respiration▪ Influence of temperature and pH



576

Digestion in the stomachDigestion in the stomach

The digestion of proteins begins in the stomach. The gastric juices contain the enzyme pepsin along with diluted hydrochloric acid, whichactivates the enzyme from its precursor, pepsinogen. In the experiment, boiled fish is added to test tubes with water, enzyme solution,hydrochloric acid plus a mixture of enzyme solution and hydrochloric acid. In order to simulate the body temperature, the test tubes areplaced in a large glass beaker which serves as a simple water bath. After a few hours, it is clearly evident that proteins break down only inthe preparation with both pepsin and hydrochloric acid.


TESS Biologie Handbuch Ökologie01845-0101845-01 German

TESS advanced Biology manual students experiments01845-0201845-02 English

TESS advanced Biología manual01845-0401845-04 Spanish

P1344300P1344300



577

Determination of the Michaelis constant with the Basic-UnitDetermination of the Michaelis constant with the Basic-Unit

The enzymatic hydrolysis of urea in aqueous solution liberates carbon dioxide and ammonia. The ions of these compounds increase the con-ductivity of the solution. Conductivity measurements can so be made to determine the rate of hydrolysis of urea by the enzyme urease atvarious substrate concentrations. The Michaelis constant can then be calculated from these values.


Demo advanced Chemie / Biologie Handbuch Cobra3 (C3BT)01320-0101320-01 German

Demo advanced Chemistry / Biology Manual Cobra3 (C3BT)01320-0201320-02 English

P1369830P1369830



578

4.8.14.8.1 GeneralGeneral 5805804.8.24.8.2 Growth, developmentGrowth, development 5855854.8.34.8.3 Water balanceWater balance 5875874.8.44.8.4 Mineral balanceMineral balance 5885884.8.54.8.5 Gas balanceGas balance 589589

Plants, growth, development, metabolismPlants, growth, development, metabolism

4 Biology4 Biology4.8 Plants, growth, development, metabolism


579

Ionic permeability of the cell membrane (with the Cobra3 Basic-Unit)Ionic permeability of the cell membrane (with the Cobra3 Basic-Unit)

PrinciplePrinciple

The cell membrane regulates the transport of nutrients and water into the cell, and of waste products and water out of the cell. This cantake place passively, e.g. on the basis of osmotic processes (differences in concentration), as well as actively.

TasksTasks

In this experiment, the selective permeability of an artificial cell membrane (dialysis tube) for H+ and OH- inons is to be examined.


Ionic permeability, Artificial cell membrane, Dialysis tube, H+ ions , OH- ions, Osmotic processes



P4120211P4120211

Ionic permeability of the cell membrane (with the Cobra3 Chem-Unit)Ionic permeability of the cell membrane (with the Cobra3 Chem-Unit)P4120240P4120240

Substrate inhibition of enzymes (with the Cobra3 Basic-Unit)Substrate inhibition of enzymes (with the Cobra3 Basic-Unit)P4120411P4120411

Substrate inhibition of enzymes (with the Cobra3 Chem-Unit)Substrate inhibition of enzymes (with the Cobra3 Chem-Unit)P4120440P4120440

4.8 Plants, growth, development, metabolism4.8 Plants, growth, development, metabolism4.8.1 General


580

Enzyme inhibition (poisoning of enzymes) (with the Cobra3 Chem-Unit)Enzyme inhibition (poisoning of enzymes) (with the Cobra3 Chem-Unit)

PrinciplePrinciple

The enzymatic hydrolysis of urea in aqueous solutions liberates carbon dioxide and ammonia. The ions of these compounds increase theconducitivity of the solution.

TasksTasks




P4120540P4120540

Enzyme inhibition (poisoning of enzymes) (with the Cobra3 Basic-Unit)Enzyme inhibition (poisoning of enzymes) (with the Cobra3 Basic-Unit)

P4120511P4120511

1. Conductivity measurements enable the rate of hydrolysis of urea by the enzyme urease to be determined. The addition of an ap-propriate inhibitor poisons the enzyme, so that it no longer converts substrate.

▪ Poisoning of enzymes▪ Enzymatic hydrolysis of urea▪ Silver nitrate inhibition of urease▪ Conducivitiy measurement



581


PrinciplePrinciple


TasksTasks




P4120611P4120611





582

Ionic permeability of the cell membraneIonic permeability of the cell membrane

The cell membrane controls the transport of nutrients and waterinto the cell, and of waste products and water out of the cell.This can take place passively, e.g. on the basis of osmotic processes(concentration differences) as well as actively. In this experiment,the selective permeability of an artificial cell membrane (dialysistube) for H+ and OH- ions is to be examined.

Scope of delivery:

▪ Wireless transmitter and receiver units to connect to the con-ductivity sensor and to a PC, can also be used for otherssensors to measure parameters common in physics, chemistry,biology and medical education

▪ Sensor-Unit conductivity/ temperature▪ Conductivity temperature probe Pt1000▪ Data acquisition and analysis software


Demo advanced Biologie Handbuch Cobra4Biochemie & Pflanzen-physiologie01331-0101331-01 German

Demo advanced Biology Manual Cobra4 Biochemistry & plantphysiology01331-0201331-02 English

P1369760P1369760


PrinciplePrinciple





P1521762P1521762

Basic set Biochemistry and plant physiology (Cobra3)Basic set Biochemistry and plant physiology (Cobra3)


Instrument set to perform the following experiments:

▪ Photosynthesis▪ Transpiration of leaves▪ Glycolysis▪ Ionic permeability of the cell membrane▪ Determination of the Michaelisconstant▪ Substrate inhibition of enzymes▪ Enzyme inhibition▪ Enzymatic activity of catalase

Equipment and technical data:Equipment and technical data:

The instrument set consists of:

▪ Computer interface for data acquisision with 7 measurement in-puts (5 analog and 2 digital inputs), one voltage output (5V and0.2A) with 4mm sockets

▪ sampling rate 500 kHz▪ online frequency analyser

Sensors for:

▪ Temperature -20...110°C▪ pH/potential▪ Conductivity▪ Pressure

▪ Software for data analysis▪ Lamp socket with reflector, diameter 20 cm, and 120 W filament

lamp▪ special glasware▪ special stand material for the experiment setups

Required Accessories:Required Accessories:

▪ Standard lab equipment and chemicals.

Basic set Biochemistry and plant physiology (Cobra3)Basic set Biochemistry and plant physiology (Cobra3)65980-8865980-88

Standard labware set for Biochemistry & plant physiology, 230 VStandard labware set for Biochemistry & plant physiology, 230 V65980-7765980-77



583

Basic set Cobra4 Biochemistry and plant physiologyBasic set Cobra4 Biochemistry and plant physiology

Function and Applications:Function and Applications:

Instrument set with the wireless computer interface Cobra4 to per-form the following experiments:

▪ Photosynthesis (2 methods)▪ Transpiration of leaves▪ Glycolysis (2 methods)▪ Ionic permeability of the cell membrane▪ Determination of the Michaelis constant▪ Enzyme inhibition▪ Substrate inhibition of enzymes▪ Enzymatic activity of catalase

Scope of delivery:Scope of delivery:

▪ Cobra4 wireless computer interface for data acquisition▪ Sensors to measure temperature, pH, conductivity, light intensity

and pressure▪ Lamp socket with reflector (diameter 20 cm) and 120 W filament

lamp▪ special glassware▪ special stand material for the experiment setups▪ experiment manual, English language (56pages, in color)

The "measure Cobra4" software (single user and school license) is notincluded. Standard lab equipment and chemicals are required addi-tionally.

Features:Features:

▪ Ten experiments in one set▪ Uniform computer interface▪ Flexible experimenting thanks to wireless data transmission▪ Compact setup▪ Reliable and reproducible results▪ All components in one package▪ For both demonstration and student experiments

Basic set Cobra4 Biochemistry and Plant physiologyBasic set Cobra4 Biochemistry and Plant physiology65982-8965982-89

TESS and Demo advanced Manual Cobra4 Physics, Chemistry,TESS and Demo advanced Manual Cobra4 Physics, Chemistry,Biology, Everyday ScienceBiology, Everyday Science01330-0201330-02

Demo advanced Biology Manual Cobra4 Biochemistry & plantDemo advanced Biology Manual Cobra4 Biochemistry & plantphysiologyphysiology01331-0201331-02

Laboratory Experiments Biol., L.V.Laboratory Experiments Biol., L.V.

16506-0216506-02



584

Effect of the soil temperature on the germination and growth of higher plantsEffect of the soil temperature on the germination and growth of higher plants


To investigate the effect of soil temperature on the germination of garden cress (Lepidium sativum). To determine the most favourable valuefor the germination and growth of cress using a temperature organ.




P4060100P4060100

▪ Plant germination▪ Temperature optimum/ maximum/ minimum▪ Soil temperature▪ Temperature preferendum

4.8 Plants, growth, development, metabolism4.8 Plants, growth, development, metabolism4.8.2 Growth, development


585

Changes of the light conditions in a deciduousChanges of the light conditions in a deciduousforestforest

PrinciplePrinciple

Why are there only a few different kinds of plants in a deciduousforest? Except for having trees that are all approximately of thesame height, hardly any other plants grow in a deciduous forest,except for young plants of the same type of trees. This experimentshows how the light intensity in a mixed forest of oaks andbeeches changes in the spring during the foliation of the trees. Italso demonstrates the effects on the vegetation.






P1520762P1520762

TESS Biology IntoductionTESS Biology Intoduction


In connection with Box 2,enables the performance of 92 experimentson the following themes:

We study plants and animals(18 experiments)Germination of seeds and growth of plants (17 experiments)Our environment and dangers to it(9 experiments)Our foods and their digestion(11 experiments)Respiration and blood (6 exp.)Sense organs (11 experiments)Plant metabolism (12 experiments)Reproduction and development(8 experiments)


The set consists of the following items including solid

▪ stackable storage box with moulded foam insert▪ Funnel,glass,top dia.80mm▪ Watch glass,dia.60mm 3x▪ Glass beaker,tall,100ml▪ Glass beaker,tall,250ml▪ 2xGlass beaker,tall,600ml▪ Glass beaker,tall,1000ml▪ Erlenmeyer flask,narrow n.,100ml▪ Erlenmeyer fl.,narrow n.,250ml▪ 2x Graduated pipette,1ml▪ Graduated pipette, 10 ml▪ Graduated cylinder, 100 ml▪ Glass tubes,straight,l=80mm,10pcs▪ Test tubes 160x16mm,10pcs▪ Students thermometer,-10...+110°C▪ Glass rod,l=200mm,d=5mm,10 pcs▪ Glass rod,l=300mm,d=7mm,10 pcs▪ Bottle,narr.mouth,100ml,clear 5x▪ Petri dish,d=100mm 6x▪ Glass tube, l=200mm, ext.dia.8mm▪ Glass tube, l=300mm, d=38/35mm




4.8 Plants, growth, development, metabolism4.8 Plants, growth, development, metabolism4.8.2 Growth, development


586

Transpiration of leaves (with the Cobra3 Basic-Unit)Transpiration of leaves (with the Cobra3 Basic-Unit)

PrinciplePrinciple

Transpiration of leaves.

TasksTasks




P4110311P4110311

1. To prepare diagrams to illustrate the transpiration of plants.2. To discuss the reasons of the differences of the pressure curve decrease.

▪ Transpiration▪ Water and nutrients transport▪ Influence of wind▪ Temperature▪ Humidity and type of leaves

4.8 Plants, growth, development, metabolism4.8 Plants, growth, development, metabolism4.8.3 Water balance


587

Salinity of soils and plant substratesSalinity of soils and plant substrates

How suitable are certain soils and plant substrates for the nutri-tion of plants? This experiment is about measuring the conduct-ivity, which in turn provides information as to which of the ex-amined soils and plant substrates already contain nutrient saltsfor plant growth and to which of them nutrients should be addedin the form of fertilisers. Plants obtain their nutrients in the formof ions from the salts in the soil. The most important nutrients ofa total of 16 nutrients that a plant needs forits growth are nitro-gen in the form of nitrates and ammonium, phosphor in the formof phosphates, and potassium in the form of potassium salts. Inaddition, the soils also require lime (calcium carbonate) in orderto avoid acidification (decrease of the pH). For agricultural produc-tion, these nutrients are added to the soil via inorganic fertilisers,while potting compost with fertilisers is used for house plants.






P1521162P1521162

The Cobra4 Sensor-Unit Conductivity, with stainlessThe Cobra4 Sensor-Unit Conductivity, with stainlesssteel electrodessteel electrodes


The Cobra4 Sensor-Unit Conductivity/Temperature with stainless steelelectrodes can be connected directly to the Cobra4 Wireless-Link,the Cobra4 Mobile-Link or the Cobra4USB-Link using a secure andreliableplug-in / lockable connection.

BenefitsBenefits

▪ Particularly good application for school and outdoor experiment-ation, as the measuring gauge is already firmly connected.


Conductivity:

▪ Measuring range: 0.2 µS/cm...200 mS/cm▪ Measuring accuracy: 6% of the measuringvalue ± 0,2µS/cm▪ Resolution: 0.1 µS/cm, 1 µS/cm, 10µS/cm, 100 µS/cm

Temperature:

▪ Measuring range: 0 to 100°C▪ Measuring accuracy: ± 0.8°C▪ Resolution: 0.1°C▪ Data flow rate: 1 Hz▪ Connecting port: sub-D-15 pole▪ Measuring electrode length, diameter,electrode spacing: 7 mm, 1

mm, 2 mm▪ Cable length: 60 cm▪ Weight: 85 g

Cobra4 Sensor-Unit Conductivity, with stainless steel electrodesCobra4 Sensor-Unit Conductivity, with stainless steel electrodes12633-0012633-00


4.8 Plants, growth, development, metabolism4.8 Plants, growth, development, metabolism4.8.4 Mineral balance


588

The twenty-four-hour rhythm of an aquatic plant (with the Cobra3 Chem-Unit)The twenty-four-hour rhythm of an aquatic plant (with the Cobra3 Chem-Unit)

PrinciplePrinciple

Plants produce oxygen by photosynthesis under the influence of light (during the day). Carbon dioxide is hereby consumed. In the dark (atnight), however, they consume oxygen and produce carbon dioxide.

TasksTasks




P4100840P4100840

1. This day and night rhythm in an aquatic plant has to be followed over a longer period by pH measurements.

▪ Photosynthesis▪ Daylight reaction▪ Dark reaction▪ Diurnal rhythm▪ Nocturnal rhythm▪ pH measurement▪ Carbon dioxide consumption and production

4.8 Plants, growth, development, metabolism4.8 Plants, growth, development, metabolism4.8.5 Gas balance


589

Photosynthesis (bubble-counting-method) (with the Cobra3 Basic-Unit)Photosynthesis (bubble-counting-method) (with the Cobra3 Basic-Unit)

PrinciplePrinciple

Photosynthesis (bubble counting method)

TasksTasks




P4110111P4110111

Photosynthesis (O2 pressure measurement) (with the Cobra3 Basic-Unit)Photosynthesis (O2 pressure measurement) (with the Cobra3 Basic-Unit)P4110211P4110211

Glycolysis (pressure measurement, with Cobra3 Basic-Unit)Glycolysis (pressure measurement, with Cobra3 Basic-Unit)P4110411P4110411

Glycolysis (temperature measurement) (with the Cobra3 Chem-Unit)Glycolysis (temperature measurement) (with the Cobra3 Chem-Unit)

P4110540P4110540

1. To measure the dependence of photosynthesis on light by counting the oxygen bubbles given off by an aquatic plant.2. To investigate the influence of the carbon dioxide content of the water on the rate of photosynthesis.

▪ Dependence of photosynthesis on light and carbon dioxide content▪ Oxygen bubble counting▪ Lux measurement



590

Glycolysis (temperature measurement, with Cobra3 Basic-Unit)Glycolysis (temperature measurement, with Cobra3 Basic-Unit)

PrinciplePrinciple

Glykolyse (measurement of temperature)

TasksTasks




P4110511P4110511

1. To depict the increase in temperature, which results, when yeast cells ferment sugar.2. To compare the temperature curves of the solutions with and without yeast.

▪ Glycolysis▪ Yeast fermentation of sugar▪ Temperature measurement▪ Respiration energy



591

Photosynthesis (bubble-counting-method)Photosynthesis (bubble-counting-method)

To measure the dependence of photosynthesis on light by counting the oxygen bubbles given off by an aquatic plant.


Demo advanced Biologie Handbuch Cobra4Biochemie & Pflanzenphysiologie01331-0101331-01 German

Demo advanced Biology Manual Cobra4 Biochemistry & plant physiology01331-0201331-02 English

P1360860P1360860

Photosynthesis (O2 pressure measurement) (with Cobra4)Photosynthesis (O2 pressure measurement) (with Cobra4)

P1351360P1351360

Cobra4 SensorsCobra4 Sensors

Cobra4 Sensor-Unit Weather: Humidity, Air pressure,Temperature, Light intensity, AltitudeCobra4 Sensor-Unit Weather: Humidity, Air pressure,Temperature, Light intensity, Altitude12670-0012670-00

Cobra4 Sensor-Unit Thermodynamics, pressure abs. 2 bar and 2 temperature NiCr-NiCobra4 Sensor-Unit Thermodynamics, pressure abs. 2 bar and 2 temperature NiCr-Ni12638-0012638-00

Cobra4 Wireless ManagerCobra4 Wireless Manager12600-0012600-00

Cobra4 Wireless-LinkCobra4 Wireless-Link12601-0012601-00



592

4.9.14.9.1 BiochemistryBiochemistry 5945944.9.24.9.2 Microbiology and biotechnologyMicrobiology and biotechnology 6006004.9.34.9.3 X-ray imaging, Computer Tomography and dosimetryX-ray imaging, Computer Tomography and dosimetry 602602

Biochemistry, Microbiology, Electrophoresis, X-Biochemistry, Microbiology, Electrophoresis, X-rayray

4 Biology4 Biology4.9 Biochemistry, Microbiology, Electrophoresis, X-ray


593

Determination of the isoelectric point of an amino acid (glycine) (with the Cobra3 Basic-Unit)Determination of the isoelectric point of an amino acid (glycine) (with the Cobra3 Basic-Unit)

PrinciplePrinciple

Amino acid molecules carry both acid and amino groups. They can therefore form both acidic anions and basic cations. The pH at which thesetwo types of iones are both present in the same concentration is called the isoelectric point.

TasksTasks




P4120111P4120111

Determination of the isoelectric point of an amino acid (glycine) (with the Cobra3 Chem-Unit)Determination of the isoelectric point of an amino acid (glycine) (with the Cobra3 Chem-Unit)

P4120140P4120140

1. This isoelectric point is to be determined by recording the titration curve for the amino acid glycine.

▪ Isoelectric point▪ Acidic anions▪ Basic cations▪ Zwitterions▪ Equivalence (inflection) points▪ pKs value▪ Titration▪ Motor piston burette

4.9 Biochemistry, Microbiology, Electrophoresis, X-ray4.9 Biochemistry, Microbiology, Electrophoresis, X-ray4.9.1 Biochemistry


594

Ionic permeability of the cell membrane (with the Cobra3 Basic-Unit)Ionic permeability of the cell membrane (with the Cobra3 Basic-Unit)

PrinciplePrinciple

The cell membrane regulates the transport of nutrients and water into the cell, and of waste products and water out of the cell. This cantake place passively, e.g. on the basis of osmotic processes (differences in concentration), as well as actively.

TasksTasks




P4120211P4120211

Ionic permeability of the cell membrane (with the Cobra3 Chem-Unit)Ionic permeability of the cell membrane (with the Cobra3 Chem-Unit)

P4120240P4120240

▪ In this experiment, the selective permeability of an artificial cell membrane (dialysis tube) for H+ and OH- inons is to be examined.

▪ Ionic permeability▪ Artificial cell membrane▪ Dialysis tube▪ H+ ions▪ OH- ions▪ Osmotic processes



595

Determination of the Michaelis constant (with the Cobra3 Basic-Unit)Determination of the Michaelis constant (with the Cobra3 Basic-Unit)

PrinciplePrinciple

The enzymatic hydrolysis of urea in aqueous solution liberates carbon dixide and ammonia. The ions of these compounds increase the con-ductivity of the solution. Conductivity measurements can so be made to determine the rate of hydrolysis of urea by the enzyme urease atvarious substrate concentrations.

TasksTasks




P4120311P4120311

Determination of the Michaelis constant (with the Cobra3 Chem-Unit)Determination of the Michaelis constant (with the Cobra3 Chem-Unit)

P4120340P4120340

1. The Michaelis constant can then be calculated from these values.

▪ Michaelis constant▪ Enzymatic hydrolysis of urea▪ Conductivity measurement▪ Bodenstein principle▪ Enzyme-substrate complex▪ Lineweaver-Burk plot



596

Substrate inhibition of enzymes (with the Cobra3 Chem-Unit)Substrate inhibition of enzymes (with the Cobra3 Chem-Unit)

PrinciplePrinciple

The enzymatic hydrolysis of urea in aqueous solution liberates carbon dioxide and ammonia. The ions of these compounds increase the con-ductivity of the solution.

TasksTasks




P4120440P4120440

Substrate inhibition of enzymes (with the Cobra3 Basic-Unit)Substrate inhibition of enzymes (with the Cobra3 Basic-Unit)

P4120411P4120411

Enzyme inhibition (poisoning of enzymes) (with the Cobra3 Chem-Unit)Enzyme inhibition (poisoning of enzymes) (with the Cobra3 Chem-Unit)

PrinciplePrinciple

The enzymatic hydrolysis of urea in aqueous solutions liberates carbon dioxide and ammonia. The ions of these compounds increase theconducitivity of the solution.

TasksTasks




P4120540P4120540

Enzyme inhibition (poisoning of enzymes) (with the Cobra3 Basic-Unit)Enzyme inhibition (poisoning of enzymes) (with the Cobra3 Basic-Unit)

P4120511P4120511

1. Conductivity measurements enable the rate of hydrolysis of urea by the enzyme urease to be determined at various substrateconcentrations. Inhibition of the enzyme by the substrate occures at excessive substrate concentrations.

▪ Substrate inhibition▪ Enzymolysis of urea▪ Conductivity-time plot▪ Reaction velocity of enzymatic hydrolysis

1. Conductivity measurements enable the rate of hydrolysis of urea by the enzyme urease to be determined. The addition of an ap-propriate inhibitor poisons the enzyme, so that it no longer converts substrate.

▪ Poisoning of enzymes▪ Enzymatic hydrolysis of urea▪ Silver nitrate inhibition of urease▪ Conducivitiy measurement



597


PrinciplePrinciple


TasksTasks




P4120611P4120611





598

Basic set Biochemistry and plant physiology (Cobra3)Basic set Biochemistry and plant physiology (Cobra3)





The instrument set consists of:


▪ sampling rate 500 kHz▪ online frequency analyser

Sensors for:

▪ Temperature -20...110°C▪ pH/potential▪ Conductivity▪ Pressure

▪ Software for data analysis▪ Lamp socket with reflector, diameter 20 cm, and 120 W filament

lamp▪ special glasware▪ special stand material for the experiment setups

Required Accessories:Required Accessories:

▪ Standard lab equipment and chemicals.

65980-8865980-88

Basic set Cobra4 Biochemistry and plant physiologyBasic set Cobra4 Biochemistry and plant physiology


Instrument set with the wireless computer interface Cobra4 to per-form the following experiments:

▪ Photosynthesis (2 methods)▪ Transpiration of leaves▪ Glycolysis (2 methods)▪ Ionic permeability of the cell membrane▪ Determination of the Michaelis constant▪ Enzyme inhibition▪ Substrate inhibition of enzymes▪ Enzymatic activity of catalase

Scope of delivery:Scope of delivery:

▪ Cobra4 wireless computer interface for data acquisition▪ Sensors to measure temperature, pH, conductivity, light intensity

and pressure▪ Lamp socket with reflector (diameter 20 cm) and 120 W filament

lamp▪ special glassware▪ special stand material for the experiment setups▪ experiment manual, English language (56pages, in color)

The "measure Cobra4" software (single user and school license) is notincluded. Standard lab equipment and chemicals are required addi-tionally.

Features:Features:

▪ Ten experiments in one set▪ Uniform computer interface▪ Flexible experimenting thanks to wireless data transmission▪ Compact setup▪ Reliable and reproducible results▪ All components in one package▪ For both demonstration and student experiments





599

Bacteria and mining - microbial extraction of oreBacteria and mining - microbial extraction of oreby Thiobacillus ferrooxidians and thiooxidansby Thiobacillus ferrooxidians and thiooxidans

PrinciplePrinciple

Scientists first recognised importance of certain bacteria for theextraction of metals from ore in the 1950s. Nowadays the micro-bial ore leaching with so-called 'lean ores' represents more than10% of the total production of copper in the USA alone. The biore-actor shown here can be used to clearly demonstrate to the stu-dents this method of extraction (e.g. copper from copper ore) us-ing such bacteria (Thiobacillus ferrooxidans).


Demo advanced Chemie Handbuch Komplettversuche (CET)01855-0101855-01 German

Complete Experiments Chemistry/Biotechnology01855-0201855-02 English

P1313900P1313900

Microbial synthesis of ethanol by ZymomonasMicrobial synthesis of ethanol by Zymomonasmobilis subsp. mobilismobilis subsp. mobilis

PrinciplePrinciple

The properties of the micro-organism Zymomonas mobilis havebeen used in the production of alcohol for centuries. Nevertheless,the bacterium in palm wine and pulque, the fermented juice ofthe agave plant, was not identified and recognised as being re-sponsible for their alcoholic fermentation until the twentieth cen-tury. Zymomonas was found to synthesize ethanol much more ef-fectively than yeast does. In this experiment, Zymomonas mobilisis grown in a bioreactor. The medium is blended by means of amagnetic stirrer and its temperature is controlled by means of aheating coil and a water bath with thermostats. The discharge ofused medium and the supply of fresh medium can be dispensedwith. This is a so-called 'static culture' (batch culture). The celldensity can first be determined photometrically in the samplestaken and the cell count can be determined in the counting cham-ber, and those data can be used to generate a growth curve.Chemical and enzymatic tests show the consumption of glucoseand the production of ethanol. The experiment is easy to perform.It does not take long to prepare. The evaluation of the test resultsis very conclusive and clearly illustrates the methods of biotechno-logy.


Demo advanced Chemie Handbuch Komplettversuche (CET)01855-0101855-01 German

Complete Experiments Chemistry/Biotechnology01855-0201855-02 English

P1313700P1313700

Fermentation of molasses to ethanol with yeastFermentation of molasses to ethanol with yeast

P1313600P1313600

4.9 Biochemistry, Microbiology, Electrophoresis, X-ray4.9 Biochemistry, Microbiology, Electrophoresis, X-ray4.9.2 Microbiology and biotechnology


600

TESS Biology Introduction Set 1TESS Biology Introduction Set 1


In connection with Box 2, this set enables the performance of 92 ex-periments on the following themes:

▪ We study plants and animals (18 exp.)▪ Germination of seeds and growth of plants (17 exp.)▪ Our environment and threats (9 exp.)▪ Food and digestion (11 exp.)▪ Respiration and blood (6 exp.)▪ Sense organs (11 exp.)▪ Plant metabolism (12 exp.)▪ Reproduction and development (8 exp.)


The set consists of the following items including solid

▪ stackable storage box with moulded foam insert▪ Funnel,glass,top dia.80mm▪ Watch glass,dia.60mm 3x▪ Glass beaker,tall,100ml▪ Glass beaker,tall,250ml▪ 2xGlass beaker,tall,600ml▪ Glass beaker,tall,1000ml▪ Erlenmeyer flask,narrow n.,100ml▪ Erlenmeyer fl.,narrow n.,250ml▪ 2x Graduated pipette,1ml▪ Graduated pipette, 10 ml▪ Graduated cylinder, 100 ml▪ Glass tubes,straight,l=80mm,10pcs▪ Test tubes 160x16mm,10pcs▪ Students thermometer,-10...+110°C▪ Glass rod,l=200mm,d=5mm,10 pcs▪ Glass rod,l=300mm,d=7mm,10 pcs▪ Bottle,narr.mouth,100ml,clear 5x▪ Petri dish,d=100mm 6x▪ Glass tube, l=200mm, ext.dia.8mm▪ Glass tube, l=300mm, d=38/35mm




4.9 Biochemistry, Microbiology, Electrophoresis, X-ray4.9 Biochemistry, Microbiology, Electrophoresis, X-ray4.9.2 Microbiology and biotechnology


601

XRE 4.0 X-ray expert setXRE 4.0 X-ray expert set


Basic set covering the fundamental principles and areas of applica-tions of X-rays, e.g. fluoroscopy experiments and X-ray photography.It can be extended by upgrade sets for specific applications and top-ics.

BenefitsBenefits

Safety concept complying with the applicable standards and regula-tions

▪ The set complies with all of the German (X-ray ordinance, RÖV)and European regulations for radiation protection.

▪ Type approval by the German Federal Office for Radiation Protec-tion (Bundesamt für Strahlenschutz, BFS) concerning the use ofthe unit at schools and universities in Germany (not subject toapproval, but to reporting). (Type approval submitted.)

▪ Lead-enforced acrylic glass windows as a shield against the X-rays(breakproof in accordance with DIN/EN 61010)

S-Lock - PHYWE's safety lock

▪ electro-mechanical system for maximum security▪ Prevents door opening during X-ray emission by multiple safety

circuits

MultiLINK

▪ External socket panel▪ Easy and safe connection of PHYWE components, such as the X-ray

energy detector (09058-30) and other standard devices, e.g. di-gital cameras

▪ USB 2.0, N2, BNC, XRED,...

Plug & measure

▪ Self-calibrating goniometer (option)▪ safe and easy handlich▪ collision protected goniometer▪ Protects expensive equipment: GM counter tube and X-ray energy

detector (XRED)

Tube XChange Technology

▪ Quick-change technology for four different X-ray tubes (W, Cu,Mo, and Fe)

▪ adjustment free▪ Complete protection against touching hot parts

XXL Chamber

▪ Particularly spacious experiment chamber for sophisticated set-ups

▪ Integrated optical bench for the easy and reproducible set-up ofexperiments (can be extended to the outside)

3View

▪ Observation through windows on three sides; optimal for thetransparent execution of experiments

Lockable tray for accessories

▪ Accessories are always ready at hand▪ Utensils are stored safely▪ Dust-free storage


The set includes the following components:

▪ XR 4.0 X-ray expert unit, 09057-99▪ XR 4.0 X-ray plug-in unit with a tungsten X-ray tube, 09057-80▪ "measure X-ray", 14407-61▪ XR 4.0 X-ray slide mounts for the optical bench, 4 pieces,

09057-19▪ XR 4.0 X-ray fluoroscopic screen, 09057-26▪ XR 4.0 X-ray protective sheath, 09057-49

Recommended upgrade sets for variousRecommended upgrade sets for various applications and topicsapplications and topics

▪ XRW 4.0 X-ray wireless demonstration upgrade set, 09115-88▪ XRP 4.0 X-ray solid state upgrade set, 09120-88▪ XRC 4.0 X-ray characteristics upgrade set, 09130-88▪ XRS 4.0 X-ray structural analysis upgrade set, 09140-88▪ XRI 4.0 X-ray imaging upgrade set, 09150-88▪ XRM 4.0 X-ray material analysis upgrade set, 09160-88▪ XRD 4.0 X-ray dosimetry and radiation damage upgrade set,

09170-88▪ XRT 4.0 X-ray Computer Tomography upgrade set, 09180-88

09110-8809110-88

XRI 4.0 X-ray imaging upgrade setXRI 4.0 X-ray imaging upgrade set


Upgrade set as an extension of the XRE 4.0 X-ray expert set(09110-88). This set is particularly suitable for studying the funda-mental principles of X-ray imaging in medical applications (radio-graphy) and material science (non-destructive testing).

The set covers the following experiments and topics:

▪ Fluoroscopy experiments and X-ray photography▪ Radiography experiments on various different models

BenefitsBenefits

▪ Direct, digital image recording - state of-the-art technology▪ Familiarisation with the radiography technology in medical ap-

plications in a technically particularly easy and intuitive way



▪ 09057-22 XR 4.0 X-ray fluoroscopy object▪ 09057-21 XR 4.0 X-ray optical bench, external▪ 09058-06 XR 4.0 X-ray blood vessel model for contrast media ex-

periments▪ 09058-07 XR 4.0 X-ray implant model for X-ray images

09150-8809150-88

4.9 Biochemistry, Microbiology, Electrophoresis, X-ray4.9 Biochemistry, Microbiology, Electrophoresis, X-ray4.9.3 X-ray imaging, Computer Tomography and dosimetry


602

XRT 4.0 X-ray Computer Tomography upgrade setXRT 4.0 X-ray Computer Tomography upgrade set


Upgrade set as an extension of the XRE 4.0 expert set (09110-88). Toperform X-ray imaging (radiography), and X-ray Computer Tomography(CT) experiments. Particularly suitable for experiments in lab coursesand lectures in physics, medical education and material sciences.Thisset covers the following experiments and topics:

▪ X-ray imaging of biological and technical samples▪ NDT (Nondestructive testing)▪ X-ray Computer Tomography (CT) in medicine, engineering and

material sciences▪ Digital geometry processing to generate a three-dimensional im-

age of an object▪ Volumetric (3D) reconstruction, included rendering

Features and BenefitsFeatures and Benefits

▪ Direct aquisition of the X-ray images by a direct X-ray direct di-gital image sensor:- No extra flourescent screnn is neccessary

- Experimentation under daylight conditions▪ High-performance CMOS image sensors for the direct digital X-

ray radiography to create superior image quality, high resolution,and large active area images based on CMOS technology.

▪ X-ray computer tomography (CT) is based on the X-ray direct digit-al image sensor, the Z-axis rotation unit and the powerful meas-ure XRt tomography software package.

▪ Z-axis rotation of the sample to be analysed: Movement of thesample is not influenced by gravitational effects, rigid bodies offlexible size can be analysed on a simple way.

▪ Acquisition of high resolution CT scan, 360° image stack within10 minutes (one frame per second, one degree per frame)



▪ XR 4.0 direct digital image sensor, 09057-41- Active area 5 x 5 cm²

- Resolution 46µm- Image depth 12 bit

- USB2.0 interface

▪ XR 4.0 CT object Z-rotation unit, 09057-41- Angle resolution < 1 degree

- Motorised, USB 2.0 interface

▪ Measure XRt 4.0 tomography software package, 14421-61▪ XR 4.0 CT accessories, 09057-42

09180-8809180-88

XRD 4.0 X-ray dosimetry and radiation damageXRD 4.0 X-ray dosimetry and radiation damageupgrade setupgrade set


Upgrade set as an extension of the XRE 4.0 X-ray expert set(09110-88). This set is particularly suitable for studying the influenceof X-rays on biological media.

The set covers the following experiments and topics:

▪ Dosimetry▪ Degradation and damage caused by X-rays▪ Ionisation of the air by X-rays



▪ XR 4.0 X-ray plate capacitor for the X-ray unit, 09057-05▪ Power supply unit, regulated, 0...600V-, 13672-93▪ DC measuring amplifier, 13620-93▪ XR 4.0 X-ray dosimetry accessories, 09057-25▪ XR 4.0 X-ray radiation damage set, 09057-27

09170-8809170-88

Additional XR 4.0 X-ray upgrade setsAdditional XR 4.0 X-ray upgrade sets

Upgrade sets as an extension of the XRE 4.0 X-ray expert set(09110-88).

XRP 4.0 X-ray Solid state physics upgrade setXRP 4.0 X-ray Solid state physics upgrade set09120-8809120-88

XRC 4.0 X-ray characteristics upgrade setXRC 4.0 X-ray characteristics upgrade set09130-8809130-88

XRS 4.0 X-ray structural analysis upgrade setXRS 4.0 X-ray structural analysis upgrade set09140-8809140-88

XRM 4.0 X-ray material analysis upgrade setXRM 4.0 X-ray material analysis upgrade set09160-8809160-88

XRW 4.0 X-ray wireless demonstration upgrade setXRW 4.0 X-ray wireless demonstration upgrade set09115-8809115-88



603

XR 4.0 X-ray expert unitXR 4.0 X-ray expert unit


School/full-protection device with X-ray tube quick-change techno-logy for fluoroscopy and X-ray imaging, ionisation and dosimetry ex-periments, Laue and Debye-Scherrer images, X-ray spectroscopy, Braggreflection, bremsspectrum/characteristic lines of various different an-ode materials, Moseley's law, determination of Planck's constant andRydberg constant, Duane Hunt's law, material-thickness- and energy-dependent absorption, K and Ledges, contrast medium experiments,Compton scattering, and X-ray diffractometry.

BenefitsBenefits

Safety concept complying with the applicable standards and regula-tions

▪ The unit complies with all of the German (X-ray ordinance, RÖV)and European regulations for radiation protection.

▪ Type approval by the German Federal Office for Radiation Protec-tion (Bundesamt für Strahlenschutz, BFS) concerning the use ofthe unit at schools and universities in Germany (not subject toapproval, but to reporting). (Type approval submitted.)

▪ Lead-enforced acrylic glass windows as a shield against the X-rays(breakproof in accordance with DIN/EN61010)

▪ PHYWE safety lock technology (registered utility model)

S-Lock - PHYWE's safety lock

▪ electro-mechanical system for maximum security▪ Prevents door opening during X-ray emission by multiple safety

circuits

MultiLINK

▪ External socket panel▪ Easy and safe connection of PHYWE components, such as the X-ray

energy detector (09058-30) and other standard devices, e.g. di-gital cameras

▪ USB 2.0, N2, BNC, XRED, ...

Plug & measure

▪ Self-calibrating goniometer (option)▪ safe and easy handling▪ collision protected goniometer▪ Protects expensive equipment: GM counter tube and X-ray energy

detector (XRED)

Tube XChange Technology



XXL Chamber

▪ Particularly spacious experiment chamber for sophisticated set-ups

▪ Integrated optical bench for the easy and reproducible set-up ofexperiments (can be extended to the outside)

3View

▪ Observation through windows on three sides; optimal for thetransparent execution of experiments

Lockable tray for accessories

▪ Accessories are always ready at hand▪ Utensils are stored safely▪ Dust-free storage


▪ Microprocessor-controlled basic unit with two independent safetycircuits for the door position and two independent monitoringcircuits for the door locking system

▪ Four different X-ray tubes (Fe, Cu, Mo, and W) can be plugged inand remain visible during operation

▪ Determination of the X-ray intensity via an integrated Geiger-Müller counter tube connection with a variable counter tubevoltage (0...700 V) and an integrated loudspeaker

▪ TFT colour display (dimensions 4,3"(95 x 54 mm), 16 Bit, 56.536colours, 480 x 272 Pixel) for the manual control of the unit

▪ "Display Connect" interface for the connection of a large-scaledisplay unit

▪ True-colour line-shaped interior LED lighting system▪ High voltage 0.0...35.0 kV▪ Emission current 0.0...1.0 mA▪ Housing (mm): 682 (W) x 620 (H) x 450(D)▪ Experiment chamber (mm): 440 (W) x 345(H) x 354 (D)▪ Connection: 110/240 V~, 50/60 Hz▪ Power consumption: 200 VA▪ Mass: 55 kg▪ PC control via USB 2.0

Required accessoriesRequired accessories

When the unit is used for the first time, at least one X-ray tube, e.g.the tungsten X-ray tube 09057-80, is required.

XR 4.0 X-ray expert unitXR 4.0 X-ray expert unit09057-9909057-99

XR 4.0 X-ray goniometerXR 4.0 X-ray goniometer09057-1009057-10



604

measure XRm 4.0 X-ray Softwaremeasure XRm 4.0 X-ray Software

Function and applicationFunction and application

Software package of the "measure" series for controlling the XR 4.0Expert Unit (X-ray unit). XRm 4.0 consists of a module for device con-trol and measurement data recording and a module for measurementdata processing (main program).

BenefitsBenefits

AUTORUN

▪ Automatic identification of the connected devices of the XR 4.0series

▪ Loading of predefined settings▪ Working directly without the need for specialist knowledge

Double control

▪ Simultaneous operation of the XR 4.0 Expert Unit via manual con-trol and via a computer

▪ No restrictions concerning the execution of experiments

Plug & measure

▪ The intuitive user concept considerably simplifies the operationof such a complex device and puts the experiment into the focusof attention.

Multilingual

▪ XRm 4.0 is available in more than 20 languages, among themGerman, English, French, Spanish, Arabic, and Russian. As a res-ult, XRm 4.0 is also suitable for beginners' laboratory courses atuniversities and the secondary school level.

Reference experiments

▪ The comprehensive collection of reference experiments simplifiesthe selection of suitable experiments and can be used as a tem-plate for own experiment scripts/laboratory handbooks.

▪ All of the relevant topics concerning the characterisation and ap-plication of X-rays are documented.

▪ Experiment descriptions in PDF files with learning objectives,brief description, set-up picture, equipment list, experiment pro-cedure, reference results with a reference to the theoretical back-ground, and device and software settings that are specifically ad-apted to the experiment.

▪ All of the experiment-relevant settings can be loaded at the pushof a button.

▪ The experiment descriptions include configuration files and ex-ample measurements. They are provided free of charge on themeasure DVD.

System requirementsSystem requirements

▪ PC with at least a Pentium 3 processor, 512 MB RAM, 1 GB freehard drive space, DVD drive, USB 2.0, Microsoft ®Windows XP orhigher.

measure XRm 4.0 X-ray Softwaremeasure XRm 4.0 X-ray Software14414-6114414-61

measure XRt 4.0 X-ray CT Softwaremeasure XRt 4.0 X-ray CT Software14421-6114421-61

XR 4.0 X-ray Plug-in tubesXR 4.0 X-ray Plug-in tubes


Factory adjusted tube in sheet steel housing ready for use in connec-tion with XR 4.0 expert unit. Housing with plugs to accept the tubesoperating quantities from the basic unit.With handle, mechanical lock and two switching pins,which only op-erate correspondingly security microswitches of the basic unit whenthe plug-in module is correcly inserted.

Benefits:Benefits:

Tube XChange Technology:




▪ Anode angle 19°▪ Max. operation datas 1 mA/35 kV▪ Test voltage 50 kV▪ Mass 4.3 kg▪ Dimensions (26.7 x 18.8 x 20.3) cm▪ Incl. dust protection cover

XR 4.0 X-ray Plug-in Cu tubeXR 4.0 X-ray Plug-in Cu tube09057-5009057-50

XR 4.0 X-ray Plug-in Mo tubeXR 4.0 X-ray Plug-in Mo tube09057-6009057-60

XR 4.0 X-ray Plug-in Fe tubeXR 4.0 X-ray Plug-in Fe tube09057-7009057-70

XR 4.0 X-ray plug-in unit W tubeXR 4.0 X-ray plug-in unit W tube09057-8009057-80



605

TESS expert Handbook Physics X-Ray ExperimentsTESS expert Handbook Physics X-Ray Experiments

Experiments with X-rays and their use in physics, chemistry, biology,medicine, material science, and geology

DescriptionDescription

Comprehensive collection of reference experiments concerning thefundamental principles and use of X-rays in physics, chemistry, bio-logy, medicine, material science, and geology with the XR 4.0 X-rayunit platform as a pool of ideas concerning the potential areas of ap-plication in demonstration and laboratory experiments. A clear matrixsimplifies the orientation in terms of scientific fields and topics.

TopicsTopics

▪ Characteristic X-radiation / atomic structure / quantum physicsand chemistry

▪ X-ray absorption▪ Compton scattering▪ Dosimetry▪ Crystal structures/structural analysis with X-rays/Debye-Scherrer

experiments (counting tube goniometer)▪ Transirradiation experiments/non-destructive testing

FeaturesFeatures

▪ Experiment descriptions with clearly structured learning object-ives, fundamental principles, photo of the set-up, equipment list,tasks, illustrated instructions concerning the set-up and proced-ure, theory and evaluation with example results plus importantnotes concerning the operation and safety of the equipment. Thissimplifies the orientation and execution as well as the selec-tion of the experiment parts for personalised laboratory exper-iments. The information provided is so comprehensive that noother background information is required.

▪ For every experiment, the software package "XRM 4.0 measure X-ray" includes presettings for the easy and direct execution of theexperiment at the push of a button as well as numerous examplemeasurements.

▪ Experiment matrix for quick orientation▪ Operating instructions concerning the components of the XR 4.0

platform including detailed information▪ DIN A4 format, spiral-bound, colour print

01200-0201200-02



606

6.16.1 Software measureSoftware measure 9019016.26.2 Cobra4Cobra4 9049046.36.3 Cobra3Cobra3 9269266.46.4 Power supply unitsPower supply units 949949

950950952952955955956956

6.56.5 Measurement instrumentsMeasurement instruments 959959960960963963967967968968970970

Additional materialAdditional material

6.4.16.4.1 Small to medium voltage power supply unitsSmall to medium voltage power supply units6.4.26.4.2 Stabilised and regulated power supply unitsStabilised and regulated power supply units6.4.36.4.3 High-voltage power supply unitsHigh-voltage power supply units6.4.46.4.4 Signal generatorsSignal generators

6.5.16.5.1 Hand-held measuring instruments - electricityHand-held measuring instruments - electricity6.5.26.5.2 Demonstration measurement instruments - electricityDemonstration measurement instruments - electricity6.5.36.5.3 Oscilloscopes, recordersOscilloscopes, recorders6.5.46.5.4 Measuring amplifiersMeasuring amplifiers6.5.56.5.5 Time measuring instruments, countersTime measuring instruments, counters

6 Additional material6 Additional material


899

973973974974981981987987989989991991994994

6.66.6 MicroscopesMicroscopes 995995

6.5.66.5.6 Meteorological instrumentsMeteorological instruments6.5.76.5.7 Temperature measuring instruments, thermometersTemperature measuring instruments, thermometers6.5.86.5.8 pH and conductivity measuring instrumentspH and conductivity measuring instruments6.5.96.5.9 Oxygen, lux and pressure measuring instrumentsOxygen, lux and pressure measuring instruments6.5.106.5.10 Radioactivity, sound level and gas measuring instrumentsRadioactivity, sound level and gas measuring instruments6.5.116.5.11 Photometers, spectroscopes, polarimeters, refractometersPhotometers, spectroscopes, polarimeters, refractometers6.5.126.5.12 General - measurement instrumentsGeneral - measurement instruments

6 Additional material6 Additional material


900

6 Additional material6 Additional material6.1 Software measure


901



902



903

6 Additional material6 Additional material6.2 Cobra4


904



905



906



907

All Cobra4 devices are listed in the following order:

• Basic units• Sensors• Accessories• Sets

for all disciplines.

You will find further information on articles, manuals and experi-ments in the respective chapterschapters and on the PHYWE websitePHYWE website.

Software Cobra4 - Single user and school licenceSoftware Cobra4 - Single user and school licence

Funktion und VerwendungFunktion und Verwendung

The "measure Cobra4" measuring software leaves nothing to be de-sired.

As soon as a Cobra4 sensor is connected to a PC,irrespective of whetherby Cobra4 Wireless or Cobra4 USB, the "measureCobra4" softwareopens completely automatically and shows the connected sensors, therequired measuring windows and the current measuring data.

Measurement recording is then started with a single CLICK.

This all takes under 40 seconds!

Vorteile:Vorteile:

Embedded experiments with online documentation and measurementexamples and automatic configuration

NAVIGATOR

On the left hand side of the software EVERYTHING ALWAYS IN VIEW.

In theNAVIGATOR, you can:

▪ 1. Automatically see all connected sensors▪ 2. See / change the condition of the sensors (activated, deactiv-

ated)▪ 3. Change all sensor parameters by double clicking▪ 4. Add calculated channels that allow e.g. the online conversion

of measuring values (e.g. °C to K) or the calculation of measuredvalues from different measuring channels (e.g. calculation, illus-tration of the resistance from current and voltage)

▪ 5. Easily load measuring examples- experiments descriptions,parameter settings, displays and graphs come automatically

▪ 6. Easily load configuration files. You will automatically have theoptimum setting for your application

MEASURING WINDOW:

All measuring values are displayed immediately.

The following views can be selected individually by measuring chan-nel:

▪ 1. Digital measuring value window▪ 2. Analogue measuring value window▪ 3. Graphs▪ 4. Additional measuring graphs with a free choice of scale applic-

ation▪ 5. AS WITH MICROSOFT® PRODUCTS: Open the correct application

window by doubleclicking or using the right mouse button

▪ 6. All modifications can also be made DURING THE MEASUREMENT.

LOAD EXPERIMENTS:

▪ Numerous experiments examples are easily loadable.▪ In addition to a comprehensive experiments description in pdf

format with structure image, material list, experimental set-upand results, the parameters required for this experiment areloaded automatically.

These are the details:

▪ 1. Sensor settings▪ 2. Illustrations - multi-graph / virtualdevice

AND EVEN BETTER:

▪ all experiment descriptions, configuration files and sample meas-urements are included on the "measure Cobra4" CD-ROM for FREE.

KEY WORDS IN SAMPLE EXPERIMENTS:

▪ For each sample experiment, all associated key words are dis-played automatically.

▪ A single click on a keyword will immediately display help with de-tailed explanations.

▪ This makes it possible to carry out all experiments very easily,quickly and reliably.

System requirements:

▪ PC with min. Pentium 3, 512 MB RAM, 1 GB free space on the harddisk, CD- ROM drive, USB 2.0, Microsoft ® Windows 2000 or high-er.

14550-6114550-61

TESS and Demo advanced Manual Cobra4 Physics,TESS and Demo advanced Manual Cobra4 Physics,Chemistry, Biology, Everyday ScienceChemistry, Biology, Everyday Science



908

FunctionFunction

Impressive experimental descriptions from the fields of physics,chemistry and biology that pays attention in particular to the advant-ages of the radio-controlled transmission of measured values with theCobra4 system. In total more than 120 demonstration and studentexperiments are described in detail. Experiments on the interdiscip-linary topic "everyday life phenomena" are contained.

ContentsContents

▪ Physics: Mechanics, Thermodynamics, Electricity▪ Chemistry: Chemical equilibrium, Electrochemistry▪ Biology: Ecology, Physiology, Biochemistry and Plant physiology▪ Everyday science: Home, Outdoors, Hobby, Technics, Transporta-

tion


Arch file size A4, 350 color print pages

01330-0201330-02

Cobra4 basic unitsCobra4 basic units

How do you want to measure?

All Cobra4 sensor units can be connected to basic units through asecure plug-latch insert, and are identified automatically by thesystem.

Cobra4 Wireless ManagerCobra4 Wireless Manager


USB device for radio-based communication with the Cobra4 Wire-lessLink.

Benefits:Benefits:

Simply connect the device to the computer's USB port.

Up to 99 measuring sensors can be connected to one computer

Automatic detection of all connected measuring sensors.


Power consumption: < 100 mA, Connection voltage (via USB): 5 V, Ra-dio output power: 1 mW, Max. data rate (burst):125,000 values/s,Range with no obstacles: 20 m , max.number of Cobra4 Wireless-Linksin the network: 99, Dimensions L x B x H: 75 x 25 x 10 mm, Weight:20 g, incl. CD-ROM with drivers and demo version of the "measureCobra4" measuring software , incl. FREE evaluation software, experi-ments description and configuration settings for experiments, oper-ating manual

12600-0012600-00

Cobra4 Wireless-LinkCobra4 Wireless-Link


Interface module for the radio-based transmission of sensor measur-ing values in conjunction with the Cobra4 wireless manager.

Benefits:Benefits:

▪ All Cobra4 Sensor-Units can be quickly connected using a secureand reliable plug-in / lockable connection.

▪ All Cobra4 measuring sensors are easy to plug in and automatic-ally detected

▪ The radio network with the Cobra4Wireless Manager is estab-lished automatically and is extremely stable, as it uses its ownradio protocol

▪ Up to 99 Cobra4 Wireless-Links can be connected to one Cobra4Wireless-Manager

▪ No more cable mess, thanks to radio measuring▪ With radio transmission, moving sensors offer completely new ex-

perimentation options, e.g. the measurement of acceleration ofa student on a bicycle etc.

▪ The use of high performance batteries means that no externalpower supplyis required.

Cobra4Wireless is particularly suitable for:

▪ Computer aided student's experiments using only one teacher'scomputer (max. 99 sensors on one computer)

▪ convenient experimentation without annoying cables▪ Experiments with moving sensors, e.g. freefall acceleration etc.

Equipment and technical specifications:Equipment and technical specifications:

▪ Voltage supply: 2 x Mignon batteries▪ Power consumption: < 300 mA▪ Radio output power: 1 mW▪ max.data rate (burst): 125,000 values/s▪ Range with no obstacles: 20 m▪ Dimensions L x B x H: 125x65x35 mm▪ Weight: 200 g▪ 2 high performance 2,700mAh batteries▪ operating manual

12601-0012601-00



909

Cobra4 USB-LinkCobra4 USB-Link


The Cobra4 USB-Link is a highly efficient interface module for thetransmission of sensor measuring values to a PC via a USB connection.

Benefits:Benefits:

▪ All Cobra4Sensor-Units can be connected to the Cobra4 USB-Linkusing a stable plug-in / lockable connection.

▪ Up to 400,000 measuring values/sec▪ Several Cobra4 USB links can be connected to one PC (via USB

portson the PC or by USB hub)▪ Automatic detection of all Cobra4Sensor-Units▪ Power supply from USB connection, no additional external power

supply required.

ideally suited to the following applications:

▪ Especially fast measurements(acoustic, electrical etc.)▪ Demonstration experiments▪ Student's experiments (if one PC is available for each work group).


▪ Power supply via PC: < 300 mA▪ Max. data rate (burst):400,000 values/sec▪ Dimensions L x B x H: 125x65x35 mm▪ Weight: 100 g▪ Delivery incl. USB cable▪ operating manual and CD-ROM with drivers and demoversion of

the "measure Cobra4" measuring software▪ incl. FREE evaluation software, experiments descriptions and con-

figuration settings for experiments.

12610-0012610-00

Cobra4 Junior-LinkCobra4 Junior-Link


The Cobra4 Junior-Link is an interface module for the transmission ofsensor measuring data to a PC via an USB connection. It is speciallydesigned for the use in simple student experiments with only oneSensor-Unit. All Cobra4 Sensor-Units can be connected to the Cobra4Junior-Link using a stable plug-in / lockable connection.

BenefitsBenefits

▪ the Cobra4 Junior-Link shows the following features:▪ the Cobra4 Junior-Link can be connected to a PC (via USB port on

the PC)▪ automatic detection of all Cobra4 Sensor-Units▪ power supply from USB connection, no additional external power

supply required

In particular, it is ideally suited for student experiments (if a PC isavailable for each work group).


▪ power supply via PC < 300 mA▪ max. data rate: 10,000 datas/sec▪ dimensions L x B x H: 125x65x35 mm▪ weight: 100 g▪ delivery incl. USB cable, operating manual and CD-ROM with

drivers and demoversion of the "measure Cobra4" measuringsoftware incl. FREE evaluation software, experiments descriptionsand configuration settings for experiments

12615-0012615-00

Cobra4 Remote-LinkCobra4 Remote-Link


The Cobra4 Remote-Link can be used to control the measuring valuerecording of an experiment constructed using a radiobased Cobra4network.

Benefits:Benefits:

▪ The measuring value recording start and stop commandis trans-mitted by radio to the Cobra4Wireless Manager on the PC.

▪ Optimum application, e.g. in student experiments, freefall withan acceleration sensor etc.


▪ Voltage supply: 2 x Mignon batteries▪ Power consumption < 200 mA▪ Radio output power: 1 mW▪ Range with no obstacles: 20 m▪ Dimensions L x B x H: 125x65x35 mm▪ Weight: 200 g▪ 2 high performance batteries▪ operating manual

12602-0012602-00



910

Cobra4 sensor unitsCobra4 sensor units

What do you want to measure?

The Cobra4 sensor units are connected directly to basic units, andare identified automatically by the system.




BenefitsBenefits

▪ can be connected directly to the Cobra4Wireless-Link, the Cobra4Mobile-Link or the Cobra4 USB-Link.


▪ Sensoatar jacket: stainless steel▪ Measuring range: -20..+110°C▪ Absolute accuracy: ± 0.5°C▪ Resolution: 0.05°C▪ Time constant: 7 s▪ Data flow rate: 200 Hz▪ Connecting port: sub-D-15-pole▪ Sensor length / diameter: 200 mm, 6 mm▪ Cable length: 120 cm▪ Weight: 125 g

12640-0012640-00



The Cobra4 Sensor-Unit 2 x Temperature NiCr-Ni is a measuring re-corder for temperature measurements, which is controlled by micro-controller.

BenefitsBenefits

▪ It canbe fitted with two NiCr-Ni thermoelements (type K), in orderto measure up to two temperatures simultaneously or to measurea temperature difference

▪ The Cobra4 Sensor-Unit 2 x Temperature NiCr- Ni can be connec-ted to the Cobra4Wireless-Link, the Cobra4 Mobile-Link or the Co-

bra4 USB-Link using a secure and reliable plug-in / lockable con-nection.


▪ Temperature measuring range: -200..+1200 °C▪ Resolution: 0.1 K▪ Measuring accuracy: equal to the accuracy of the gauges used▪ Data flow rate: 5 Hz▪ Dimensions: approx. 62 mm x 63 mm▪ Weight: 85 g

12641-0012641-00




BenefitsBenefits

▪ It canbe fitted with two NiCr-Nithermoelements (type K), in orderto measure up to two temperatures and one absolut pressurevalue simultaneously

▪ The unit can be connected to the Cobra4Wireless-Link, the Cobra4Mobile-Link or the Cobra4 USB-Link using a secure and reliableplug-in/ lockable connection.


Temperature:

▪ Measuring range: -200..+1200°C▪ Resolution: 0.1 K▪ Measuring accuracy: equal to the accuracy of the gauges used

Pressure:

▪ Measuring range: 0...2000 hPa▪ Resolution 0.1 hPa▪ Measuring accuracy: ± 0,5%▪ Data flow rate: max. 5 Hz▪ Dimensions: approx. 62mm x 63mm x 35mm▪ Weight: approx. 190 g

12638-0012638-00



911




BenefitsBenefits

▪ It can be fitted with two NiCr-Ni thermoelements (Type K) and apH probe or Redox measuring chain, in order to measure up totwo temperatures and one pH or potential value simultaneously

▪ The unit can be connected to the Cobra4Wireless-Link, the Cobra4Mobile-Link or the Cobra4 USB-Link using a secure and reliableplug-in/lockable connection.


Temperature:

▪ Measuring range: -200..+1200 °C▪ Resolution: 0.1 K▪ Measuring accuracy: equal to the accuracy of the gauges used

pH:

▪ Measuring range: 0...14▪ Resolution 0.01K▪ Measuring accuracy: ± 0,5%

Potential:

▪ Measuring range -2000..+2000 mV▪ Resolution: 0.1 mV▪ Measuring accuracy: ± 0.5%▪ Data flow rate: 5 Hz▪ Dimensions: approx. 62 mm x 63 mm▪ Weight: 95 g

12630-0012630-00




BenefitsBenefits

▪ It can be fitted with a pH probe or Redoxmeasuring chain, in or-der to measure pH or potential values


Equipment and technicla dataEquipment and technicla data

pH:


Potential:

▪ Measuring range: -2000...+2000 mV▪ Resolution: 0.1 mV▪ Measuring accuracy: ± 0.5%▪ Data flow rate: 5 Hz▪ Dimensions: approx. 62 mm x 63 mm▪ Weight: 70 g

12631-0012631-00

Electrodes with BNC plugElectrodes with BNC plug

These electrodes with a BNC plug may be connected to both Cobra4Sensor units Chemistry and pH.





Cobra4 Sensor-Unit Conductivity+, Conductivity/Cobra4 Sensor-Unit Conductivity+, Conductivity/Temperature (Pt1000)Temperature (Pt1000)




912


BenefitsBenefits

▪ The Cobra4 sensor may be connected directly to the Cobra4Wireless-Link, the Cobra4 Mobile-Link or the Cobra4USB-Link us-ing a secure and reliable plug-in / lockable connection.


Conductivity:

▪ Measuring range 1: 0.0...approx. 2,500.0 µS/cm▪ Measuring accuracy: 4% of the measuring value ±0.15 µS/cm▪ Measuring range 2: 0...approx. 45,000 µS/cm▪ Measuring accuracy: 4% of the measuring value ±3 µS/cm▪ Measuring range 3: 0.00...approx. 1,100 mS/cm▪ Measuring accuracy: 4% of the measuring value ±0.05 mS/cm

Temperature:

▪ Measuring accuracy: -20.0°C...150.0°C▪ Resolution: 0.1 K▪ Measuring accuracy: ±0.5K (in the range 0...100°C)

Measuring cycle: 0.8...2s (adjusted automatically)Dimensions: approx. 62 mm x 63 mm







BenefitsBenefits



Conductivity:


Temperature:



12633-0012633-00

Cobra4 Sensor-Units Force ± 4 N and ± 40 NCobra4 Sensor-Units Force ± 4 N and ± 40 N


The Cobra4 Sensor-Units Force ± 4 N and ± 40 N contain a bendingbeam (DMS technology), which converts the mechanical load into anelectrical signal.

Benefits:Benefits:

▪ Depending on the type of application, the force sensor can beconnected to the Cobra4 Wireless-Link, the Cobra4 Mobile-Link orthe Cobra4USB-Link using a secure and reliable plug-in / lockableconnection.

▪ On the top of the casing, a plate can be plugged in for measuringweights that are placed on it.

▪ On the bottom of the device, there is a hook on which weightsmay be hung.

▪ On the mechanically secure in take of the Cobra4 sensor unit,force from above or below is applied using a drop rod with a M6thread.


▪ 100 mm long rod with M6 thread▪ Weight plate▪ Weight hook▪ Operating manual▪ Measuring range: -4...+4 N▪ Maximum sampling rate: 16 Hz▪ Measuring accuracy: 0.2 mN▪ Dimensions (L x B x H): 64 x 70 x 35 mm▪ Weight: 100 g

Cobra4 Sensor-Unit Force ± 4 NCobra4 Sensor-Unit Force ± 4 N12642-0012642-00

Cobra4 Sensor-Unit Force ± 40 NCobra4 Sensor-Unit Force ± 40 N12643-0012643-00



913

Cobra4 Sensor-Unit Electricity, current ± 6 A/ voltageCobra4 Sensor-Unit Electricity, current ± 6 A/ voltage± 30V± 30V


The Cobra4 Sensor-Unit Current /Voltage ±30 V ± 6 A is a securedmeasuring sensor, which can be connected to theCobra4 Wireless-Link, the Cobra4 Mobile Link or the Cobra4 USB-Link using a secureand reliable plug-in / lockable connection, depending on the applic-ation type.

BenefitsBenefits

▪ The sensor has a voltage difference input.▪ Simultaneous measurement of current and voltage is possible.


Measuring range:

▪ Voltage: -30...30 V▪ Current: -6...6 A

Resolution:

▪ Voltage: 15 mV▪ Current: 3 mA

Internal resistances:

▪ Voltage: 1 MOhm▪ Current: 33 mOhm▪ Weight: 100 g

12644-0012644-00

Electrometer AmplifierElectrometer Amplifier


Operational amplifier with high resistance input for quasi-staticvoltage measurement and measurement of very small charges.

BenefitsBenefits

Suited for experiments with electrostatics, e.g. charge measurement,capacity measurement of sphere-capacitor, measurement of directvoltages, quasi-static measurements and measurement of small cur-rents.


▪ Power supply via 4 mm sockets or wall power supply with holesocket

▪ Operation temperature: 5...40°C▪ Relative humidity: < 80%▪ Gain/amplification: 1.0▪ Input resistance: > 10000 GOhm▪ Input current: < 0.5 pA▪ Input capacitance: < 50 pF▪ Input voltage:▪ Amplifier (socket 1): ± 10 V-▪ 2. input (socket 2): 1 kV▪ Power supply: 12 V AC/25 mA hole socket: 2.1/5.5 mm or▪ External power source: 12 V AC25 mA 4 mm sockets▪ or: Cobra3 interface: ± 15 V RS232 socket▪ Output voltage: ± 10 V▪ Output current: 1 mA▪ Output resistance: < 500 Ohm▪ Dimensions H × W × D (mm):65 × 113 × 35▪ Weight: 150 g

Electrometer AmplifierElectrometer Amplifier13621-0013621-00

Power supply 12V AC/500 mAPower supply 12V AC/500 mA11074-9311074-93

Cobra4 Sensor-Unit Energy electricity, voltage, power,Cobra4 Sensor-Unit Energy electricity, voltage, power,capacitycapacity


The Cobra4 Sensor Unit Energy is used for the measurement anddirect indication of measurement variables of the electrical powerand energy in direct-current and alternating current circuits (current,voltage, effective and apparent power, angular phase shift, fre-quency, electric work).

BenefitsBenefits

Through the direct measurement of alternating current and direct-current sizes numerous basic as well as application-oriented experi-ments are possible, e.g. for the charactersitic of alternating currentresistances or for the investigation of the energy demand of con-sumers. The Cobra4 Sensor Unit Energy can be connected to the Co-bra4 Wireless Link, the Cobra4 Mobile Link or the Cobra4 USB Linkthrough a secure and reliable plug-in / lockable connection. The datacan be measured and displayed in student or demonstration experi-ments with or without PC.


▪ measuring range and resolution 30 V (0.3 mV), 6 A (0.3 mA)▪ frequency range: up to 2 kHz

12656-0012656-00



914

Cobra4 Sensor-Unit Timer/CounterCobra4 Sensor-Unit Timer/Counter


Sensor-Unit of the Cobra4 family. Interface-module with timer andcounter functionality for up to four light barriers, one measuring mi-crophone, movement sensor, falling sphere apparatus or other deviceswith TTLcompatible signals. Optionally anexternal trigger device canbe used (switch, starter system for motion track, ...). The measuredvalues of the sensor can be transmitted with the Cobra4 Wirelessmanager and the Cobra4 Wireless-Link by radio or with the USB-Linkto the PC. All Cobra4 sensor-units are quickly connectable through asecure and reliable plug-in / lockable connection.Some applications:

▪ linear Motion incl. laws of collision with motion and air track▪ free fall with picket fences or falling ball apparatus▪ oscillations▪ rotational motion▪ frequency of acoustical signals

BenefisBenefis

▪ With the aid of the intuitive softwaremeasure for Cobra4 thesingleapplication scenarios can be started comfortably with 10preset modes

▪ All relevant attempts with timemeasurement and counting arecovered

▪ The simultaneous observation of thesignal level facilitates theunderstanding of the measured values of light barriers

▪ Investigation of complex contexts through combination with oth-er sensors from the Cobra4 family

▪ Thanks to radio measurement NO disturbing cable anymore - NEWdidactic possibilities through radio transmission (not dependingon the location of the PC, moving sensors)


▪ Power supply: by the Cobra4 WirelessLink or another Cobra4 basicdevice, from 3 light barriers with enclosedexternal power supply

▪ Current consumption: < 300 mA resolution: 1 microsecond▪ Dimensions: (LxBxH) 125x65x35 mm▪ Weight: 200 g▪ Accessories (included): Adapter for light barriers,external power

supply


▪ Light barrier, compact (up to 4 lightbarriers)▪ Cobra4 adapter for Sensor-Unit Timer/Counter to connect a light

barrier▪ Measuring microphone▪ Falling sphere apparatus▪ Movement sensor with cable

12651-0012651-00

Cobra4 Sensor-Unit 3D-Acceleration, ± 2 g, ± 6 gCobra4 Sensor-Unit 3D-Acceleration, ± 2 g, ± 6 g


Depending on application type, theCobra4 Sensor-Unit 3D-Accelera-tion, ± 2g, ± 6 g can be connected to the Cobra4 Wireless-Link, theCobra4 Mobile-Link or the Cobra4 USB-Link using a secure and reliableplug-in / lockable connection.

BenefitsBenefits

▪ Specifically with this sensor, the use of Cobra4 Wireless enablescompletely new experimentation possibilities.

▪ As such, it is possible to investigate e.g.the acceleration of thesensor in freefall or the acceleration of a schoolchild on a bicycleetc.


▪ Measuring ranges: -2g...+2g or -6g...+6g▪ Resolution: 1 mg or 5 mg▪ Presentable channels: x, y and z▪ Max. data rate: 160 Hz per channel▪ Weight: 80 g

12650-0012650-00

Cobra4 Sensor-Unit TeslaCobra4 Sensor-Unit Tesla

lFunction and ApplicationsFunction and Applications

Sensor-Unit to measure the magnetic field strength in DC and ACfields. Hall probes may be connected via a diode plug.

Tecnical dataTecnical data

Measuring ranges DC field

▪ ± 1 T (1 mT), ± 100 mT (100 µT), ± 10 mT (10 µT)▪ every range can be compensated up to the maximum value of the

measuring range▪ Accuracy approx. ± 2 % of the maximum value of the measuring

range

Measuring ranges AC field

▪ Frequency: 15 Hz...1 kHz▪ 1 T (1 mT), 100 mT (100 µT), 10 mT ( 10 µT)▪ AC field measurements are of RMS type - no compensation



915

▪ Accuracy approx. ± 5 % of the maximum value of the measuringrange

General▪ Maximum data rate: 5 Hz▪ Dimensions (L x W x H in mm): 60 x 70 x 35▪ Weight (g) 100

Cobra4 Sensor Tesla, Set with 2 hall probesCobra4 Sensor Tesla, Set with 2 hall probes12652-8812652-88

Cobra4 Sensor Tesla, ± 1 TeslaCobra4 Sensor Tesla, ± 1 Tesla12652-0012652-00

Hall probe, axialHall probe, axial13610-0113610-01

Hall probe, tangential, protection capHall probe, tangential, protection cap13610-0213610-02




BenefitsBenefits




Relative Humidity:


Air Pressure:


Air Temperature:


Brightness:


12670-0012670-00

Cobra4 Sensor-Unit CO2Cobra4 Sensor-Unit CO2


Sensor of the Cobra4 family for the measurement of the CO2 concen-tration in the air. The measured data of the sensor can be transferredwith the Cobra4 Wireless Link by radio to the PC in connection withthe Cobra4 Wireless Manager. All Cobra4 Sensor Units are quickly con-nectable through a secure and reliable plug-in / lockable connection.


▪ measuring range: 0... 6000 ppm▪ resolution: 50 ppm▪ data transfer rate: 1 Hz▪ dimensions (L x W x H): 60 mm x 70 mm x 30 mm▪ weight: 60 g


▪ Cobra4 Wireless Link (12601-00) and Cobra4 Wireless Manger(12600-00) and/or alternative:

▪ Cobra4 USB Link (12610-00) to the connection to a PC▪ Software measure Cobra4, individual position and school license

(14550-61) for the realization, representation and evaluation ofthe measurements

▪ Cobra4 Mobile Link (12620-00) for the measuring without PC

12671-0012671-00

Cobra4 Sensor-Unit Pulse, Heart rateCobra4 Sensor-Unit Pulse, Heart rate

FunctionFunction

Sensor of the Cobra4 family for measuring the heart rate on the earor finger. Measurement of the signal amplitude and the heart rate.



916

All Cobra4 sensors can be connected directly to the Cobra4 Wireless-Link, the Cobra4 Mobile-Link or the Cobra4 USB-Link using a secureand reliable plug-in/ lockable connection.

Technical specifications:Technical specifications:

▪ Range 40...240 pulses/minute▪ Accuracy 2 %▪ Including ear clip (cable length: 1 m)▪ Digital and graphical display of the heart rate▪ Dimensions: 60 x 70 x 35 mm▪ Weight: 100 g

Cobra4 Sensor-Unit Pulse, Heart rate, incl. ear clipCobra4 Sensor-Unit Pulse, Heart rate, incl. ear clip12672-0012672-00

Ear clip for Cobra4 Sensor-Unit PulseEar clip for Cobra4 Sensor-Unit Pulse12672-1012672-10

Cobra4 Sensor-Unit ElectrophysiologyCobra4 Sensor-Unit Electrophysiology

To perform electrophysiological, noninvasive measurements of heart,eye and muscle activities. The measurement electrodes are connectedto 3,5-mm jacks using three separate and shielded measurementcords. The sensor can be connected to a PC wireless or to a USB-port.Requires measurement cords and ECG and/ or EMG/ EOG electrodes.

Technical specifications:

▪ Measurement mode: permanent measurement▪ Operation with three separate and shielded measurement cords▪ Maximum data throughput: 1000 Hz▪ Signal filter: ECG filter: 0.03 Hz to 20 Hz with 450-fold magnific-

ation▪ EMG filter: 80 Hz to 5000 Hz with 1600-fold magnification▪ EOG filter: 0.03 Hz to 10 Hz with 800-fold magnification▪ Galvanic separation with 4000 V▪ Dimensions: 62 mm x 110 mm x 35 mm▪ Weight: 0.3 kg

Cobra4 Sensor-Unit Electrophysiology, set incl. cords and ECGCobra4 Sensor-Unit Electrophysiology, set incl. cords and ECGelectrodeselectrodes12673-7712673-77

Cobra4 Sensor-Unit Electrophysiology: EKG, EMG, EOGCobra4 Sensor-Unit Electrophysiology: EKG, EMG, EOG12673-0012673-00

ECG electrodes, 3/pkgECG electrodes, 3/pkg65981-0165981-01

EMG electrodes, 3 offEMG electrodes, 3 off65981-0265981-02

Electrode Gel, tubeElectrode Gel, tube65981-0665981-06

Electrodes for ECG Sensor, 100 pcs.Electrodes for ECG Sensor, 100 pcs.12559-0112559-01

Shielded leads for electrophysiology, color-coded, 3/pkgShielded leads for electrophysiology, color-coded, 3/pkg12673-0112673-01

Crocodile clips for disposable electrodes, 3/pkgCrocodile clips for disposable electrodes, 3/pkg12673-0212673-02

Cobra4 Sensor-Unit SpirometryCobra4 Sensor-Unit Spirometry


The Cobra4 Sensor Unit Spirometry is used for the measurement of thebreath-dependent pulmonary volume.

BenefitsBenefits

Through the possibility of the recording of measurement one receivesa diagram by means of which different function varaibles of thebreath volume can be determined. The Cobra4 Sensor Unit Spirometrycan be connected to the Cobra4 Wireless Link, the Cobra4 Mobile Linkor the Cobra4 USB Link through a secure and reliable plug-in / lock-able connection. The data can be measured and displayed in studentor demonstration experiments with or without PC.


▪ measuring range (accuracy): -15... +15 l/s (3 %)

12675-0012675-00

Cobra4, AccessoriesCobra4, Accessories

Accessories for all Cobra4 Basic units and Sensor units, respectively

Accessories for the Cobra4 Sensor-UnitAccessories for the Cobra4 Sensor-Unit

Cobra4 drop counterCobra4 drop counter

With the drop counter, in combination with a Cobra4 timer/countersensor unit, drops are recorded which drop from a burette into a con-tainer below.

AdvantagesAdvantagesThe drop counter makes possible a semi-automatic implementation ofquantitative titration in a simple way.



917

Equipment and technical dataEquipment and technical dataThe drop counter consists of a metal body with a photoelectric barrierin an elongated hole, 2 receptacles for electrodes up to a diameter of12 mm and a V-shaped centering aid for drip tips;Length: 185 mm, width: 50 mm, height: 30 mm, length of the mountbar: 90 mm, diameter of the mount bar: 10 mm, diameter of the 2electrode receptacles: 13 mm, dimensions of the elongated hole: 25mm x 15 mm, length of the connection cable: 90 cm, connection: 3.5mm jack plugs.

Forked photoelectric barrier compactForked photoelectric barrier compact

Infrared photoelectric barrier with stem, which can be screwed into 4different positions. With receptacle device for incremental wheel forthe determination of path sections.Inside dimensions (mm): 40 x 40, supply voltage: 5 V, including incre-mental wheel.

Adapter for forked photoelectric barrierAdapter for forked photoelectric barrierUp to 4 forked photoelectric barriers can be connected convenientlyand without a cable tangle with the timer-counter sensor unit. Theadapter has a multipolar cable of 1 m length.

Wind sensorWind sensor

For the measurement of the wind speed. Measuring range: 1 ... 40m/s and 4 ... 140 km/h, dimensions (mm): 112 x 162 x 140.

Movement recorderMovement recorderIncremental encoder with extremely high resolution for the recordingof rotation and linear movements. Resolution: 512 steps/rotation.With signal output for rotation direction, cord grooves 6 mm and 12mm, plastic casing with holder stem and connection cables, dimen-sions (mm): 72 x 34 x 113.

MicrophoneMicrophoneElectret converter on 25 cm sensor tube, with amplifier for the point-measuring of sonic fields.Directly connectable, low power consumption, high resolution in loc-ation and intensity. Frequency range 15 Hz... 40 kHz, sensitivity 6 mV/Pa at 1kHz, adjustable amplification 50 ... 5000, dimensions (mm):Housing 115 x 70 x 35, probe 250 x 8.

Cobra4 Drop CounterCobra4 Drop Counter12635-0012635-00

Light barrier, compactLight barrier, compact11207-2011207-20

Cobra4 adapter for Sensor-Unit Timer/Counter to connect oneCobra4 adapter for Sensor-Unit Timer/Counter to connect onelight barrierlight barrier12651-0112651-01

Cup anemometer for Cobra3Cup anemometer for Cobra312124-0012124-00

Movement sensor with cableMovement sensor with cable12004-1012004-10

Measuring microphoneMeasuring microphone03542-0003542-00

Fast Charging System for up to 4 MeH AccumulatorsFast Charging System for up to 4 MeH Accumulators


For 1-4 Mignon AA or Micro AAA.

BenefitsBenefits

Adjustable charging current by a switch "Fast charge/ Standardcharge"(2100 mA/ 850 mA for Mignon AA cells and 850 mA/ 350 mA for MicroAAA cells), Multiple over charging protection by deltaV detection, tem-perature control and safety timer, Trickle charging, faulty cell andAlkaline detection, Reverse polarity protection, Cooling of the batter-ies by a fan, Battery status is displayed by LED per charging slot


External power supply with wide range input 100-240 VAC and 12 Vcar adapter

07930-9907930-99

Ni-MH accu, Mignon, 1.2 V, 2000 mAh, Eneloop Type, 4 pcs.Ni-MH accu, Mignon, 1.2 V, 2000 mAh, Eneloop Type, 4 pcs.

07930-0307930-03

Stand for Cobra4Stand for Cobra4

Supporting stand of aluminum with a tiltangle of about 30° to placeCobra4Mobile-links and Cobra4 USB-Links ondesks. The devices arefixed by aspecific hook and loop fastener on thestand. A 50 cm longstripe of this selfadhesive hook and loop fastener isdelivered togeth-er with the stand. Toattach the devices to the stand, acorrespond-ingly suitable small piece ofthe self-adhesive hook and loop fastenerisstuck onto the back of this devices.

12681-0012681-00



918

Cobra4 setsCobra4 sets

Complete solutions for your experiments!

The sets include all necessary accessories for dealing with varioustopics, or for certain areas of application.

TESS Applied Sciences Cobra4 Environment andTESS Applied Sciences Cobra4 Environment andoutdoorsoutdoors


This device set is ideally suited to shared-work experiments withschoolgroups.

BenefitsBenefits

▪ Whether in the classroom, outdoors or on project days: in thisrobust aluminium case, you will always find the right device forcarrying out fascinating experiments with schoolgroups.

▪ Up to 4 work groups can work on and investigate interesting top-ics in parallel.

▪ All data are saved on SD memory cards.▪ Evaluation of the data can be carried out e.g. at home, as home-

work.▪ The measure evaluation software is included for FREE and may, of

course, be used privately by each pupil.

TIPTIP

This device is also ideal for use e.g.in the context of a school hikingday: here, a topografic profile can easily be produced with the weath-er sensor. In Geography lessons, the data can be evaluated and in-terpreted together. If the height is then set against the temperature,humidity relative to the path, or temperature relative to the time ofday, great discoveries can be made, which are both practical and fun.


The highly stable aluminium case contains the following materials:

▪ 4 x Cobra4 Mobile-Link▪ 1 x Cobra4Sensor-Unit pH, BNC connection▪ 1 xCobra4 Sensor-Unit Weather: air pressure, humidity, ambient

temperature, brightness▪ 1 x Cobra4 Sensor-Unit, Temperature-Semiconductor 20...110 °C▪ 1x Cobra4 Sensor-Unit Conductivity with permanently connected

stainless steel▪ 1x pH plastic, gel-filled electrode▪ 1 x100 red pH 4 buffer trays▪ 1 x 100 green pH 10 buffer trays▪ 1 x 460 ml calibration solution for conductance electrode▪ 1 x protective case for GL 25pH electrode▪ 1 x 120 labels, 4 x 100 ml square flange (HDPE)▪ 2 x 250 ml PP laboratory beaker▪ 4 x 1 GB 20 MB/sec SDmemory card for Cobra4 Mobile-Link▪ 1 x110...240 V Charger for metal hybrid batteries▪ 2 x Mignon 1.2 V 2700 mAh spare batteries - set of 4▪ operating manual plus CD-ROM with drivers and demo version of

the "measure Cobra4" measuring software, incl. FREE evaluationsoftware

▪ experimental descriptions and configuration settings for experi-ments

TESS Applied Sciences Cobra4 environment and outdoors, for 4TESS Applied Sciences Cobra4 environment and outdoors, for 4work groupswork groups12622-8812622-88

TESS Cobra4 Environment and outdoors, with 1 measurementTESS Cobra4 Environment and outdoors, with 1 measurementinstrument and german handbook, in aluminum caseinstrument and german handbook, in aluminum case12619-8812619-88


TESS Biology Set ElectrophysiologyTESS Biology Set Electrophysiology




▪ Wireless transmitter and receiver units to connect to the electro-physiology sensor to a PC, can also be used for other sensors tomeasure parameters common in physics, chemistry, biology andmedical education




▪ three reusable EMG electrodes with cable and 2 mm connectors▪ disposable electrodes (100/pkg),▪ three crocodile clips for disposable electrodes, electrode gel to



▪ 68-page manual in English language with experimental literature▪ storage box for instrument set and accessories.


TESS advanced Biology manual Cobra4 Electrophysiology: ECG,TESS advanced Biology manual Cobra4 Electrophysiology: ECG,EMG, EOGEMG, EOG12673-1212673-12

Cobra4 Basic set Biochemistry and plant physiologyCobra4 Basic set Biochemistry and plant physiology




919

Instrument set with the wireless computer interface Cobra4 to per-form the following 10 experiments: Photosynthesis (2 methods), Tran-spiration of leaves, Glycolysis (2 methods), Ionic permeability of thecell membrane, Determination of the Michaelis constant, Enzymeinhibition, Substrate inhibition of enzymes, Enzymatic activity ofcatalase.

Scope of deliveryScope of delivery

▪ Cobra4 wireless computer interface for data acquisition▪ Sensors for temperature, pH, conductivity, light intensity, pres-

sure▪ Lamp socket with reflector, diameter 20 cm, and 120 W filament

lamp▪ special glassware▪ special stand material for the experiment setup▪ experiment manual, English language (56 pages, in color)

The measure Cobra4 software (single user and school license) is notpart of the scope of delivery. Standard lab equipment and chemicalsrequired additionally.

The Standard labware set consists of: balance 210g/ 0.01g with RS232interface, lab-lifting apparatus (160 x 130 mm), magnetic stirrer, di-verse lab glassware and small items, diverse lab consumables, microl-iter syringe (100 µl) mortar and pestle, bunsen burner with safety gastubing.

The Chemicals set consists of: sodium hydrogen carbonate, 250 g;Tartrazin (E102), 25 g; Patent blue V (E131), 25g; buffer solution pH4.01, 460 ml; buffer solution pH 10.01, 1000 ml; hydrochloric acid,1.0 mol/l, 1000 ml; sodium hydroxide solution, 1.0 M, 1000 ml; Urea,pure, 250 g; urease solution in 50% glycerol, 10 ml; silver nitrate,pure, 15 g; water, distilled, 5 l; glycerol, 99 %, 100 ml; hydrogen per-oxide, 30 %, 250 ml.



Chemicals set Biochemistry & plant physiologyChemicals set Biochemistry & plant physiology65980-1065980-10

Software Cobra4 - Single user and school licenceSoftware Cobra4 - Single user and school licence14550-6114550-61

Demo advanced Biology Manual Cobra4 Biochemistry & plantDemo advanced Biology Manual Cobra4 Biochemistry & plantphysiologyphysiology01331-0201331-02

Cobra4 Wireless, Basic Set PhysicsCobra4 Wireless, Basic Set Physics


This attractive device set is ideally suited to computer-aided experi-ments in the field of physics.

Benefits:Benefits:

▪ With the radio-based recording of values, experiments can con-veniently be carried out

▪ The optimum use of this device set is in the area of demonstra-tion experiments.

▪ Furthermore, moving sensors offer completely new experiment-ation options, e.g. the measurement of acceleration of a schoolchild on a bicycle, measuring the acceleration of a body in freefalletc.


▪ 1 x Cobra4 WirelessManager▪ 1 x Cobra4 Wireless-Link▪ 1 xCobra4 Sensor-Unit Temperature▪ Semiconductor, 20...110°C▪ 1 x Cobra4 Sensor-Unit Current/ Voltage▪ 1 xCobra4 3D Sensor-Unit Acceleration,+-6 g▪ 1 x Cobra4 Sensor-Unit Force, 40 N▪ 1 x "measure Cobra4" software, individual work station and

school licence.▪ Delivery incl. CD-ROM with all drivers and the full version of the

"measureCobra4" measuring software incl. 130 experiment de-scriptions and configuration settings for experiments plus 2 highperformance batteries for the Cobra4 Wireless-Link and an oper-ating manual.

Cobra4 Wireless, Basic Set Physics, incl. Software and aluminiumCobra4 Wireless, Basic Set Physics, incl. Software and aluminiumcasecase12605-8912605-89

Cobra4 USB, Basic Set Physics incl. Softwareand plastic caseCobra4 USB, Basic Set Physics incl. Softwareand plastic case12611-8812611-88


Cobra4 Wireless, Basic Set ChemistryCobra4 Wireless, Basic Set Chemistry


This attractive device set is ideally suited to computer-aided experi-ments in the field of Chemistry.

BenefitsBenefits

▪ With the radio-based recording of values, experiments can con-veniently be carried out.

▪ The optimum use of this device set is in the area of demonstra-tion experiments.

▪ Furthermore, with modern radio transmission, moving sensorsoffer completely new experimentation options.

▪ With this system it is possible now, that experiments can to becarried out far away from the PC.



920

▪ Therewith it is surely set that the PC is not endangered by liquidsor similar things.


▪ The stable case contains the followingdevices:▪ 1 x Cobra4 Wireless Manager▪ 1 x Cobra4 Wireless-Link▪ 1 x Cobra4 Sensor-Unit Chemistry, pH and 2 x Temperature NiCr-

Ni▪ 1 x Cobra4 Sensor-Unit Conductivity+, Conductivity/ Temp.

(Pt1000)▪ 1 x pH-electrode, plastic, refillable▪ BNC plug▪ 1 x Conductivity temperature probe Pt1000▪ 2 x Protection sleeve for electrodes▪ 1 x "measure Cobra4" software, individual workstation and

school licence▪ Delivery incl. CD-ROM with all drivers and the full version of the

"measureCobra4" measuring software incl. experiments descrip-tions and configuration settings for experiments

▪ 2 high performance batteries for the Cobra4 Wireless-Link▪ operating manual

Cobra4 Wireless, Basic Set Chemistry, incl. Softwareand englishCobra4 Wireless, Basic Set Chemistry, incl. Softwareand englishhandbook in casehandbook in case12606-8912606-89

Cobra4 USB, Basic Set Chemistry incl. Softwareand englishCobra4 USB, Basic Set Chemistry incl. Softwareand englishHandbook, in caseHandbook, in case12612-8912612-89


Cobra4 Display-ConnectCobra4 Display-Connect


Complete device set for the wireless transmission of measurementsfrom Mobile-Link to a digital large-scale display.


▪ Cobra4 Display-Connect (set of sender and receiver for the use ofthe Cobra4 Mobile-Link with a digital large-scale display)

▪ Cobra4 Mobile-Link, incl. accumulators▪ SD memory card▪ Fast battery charger for up to 4 Metal-hydride-Accumulators,

110...240V▪ Digital large display with RS 232 interface▪ Cobra4 Sensor Unit weather: air pressure, air humidity, temper-

ature, light intensity, altitude▪ Software, CD-ROM▪ Manual Cobra4: Physics, Chemistry, Biology, Everyday life phe-

nomena

▪ Case for storage

Cobra4 Display-Connect, Basic Set with digital large-scaleCobra4 Display-Connect, Basic Set with digital large-scaledisplay, Mobile Link, weather sensor and English handbook,display, Mobile Link, weather sensor and English handbook,12607-8912607-89




This attractive device set serves excellently for use as a digital multi-meter set for numerous measurements.

BenefitsBenefits

This set is ideal for use in:

▪ Student experiments without a PC▪ Outdoor experimentation▪ Project days, school hiking days, trips, etc.▪ With this set, simply choose your Cobra4 Sensor-Units and com-

pile your own personal set of equipment.▪ Sufficient extra space has been left in the case for storing the

sensors▪ The "measure" evaluation software can also be used by pupils at

home for FREE.

Equipement and technical data:Equipement and technical data:

▪ 8 x and 4x Cobra4 Mobile-Link incl. SD memory cards, respectively▪ 4 x spare Mignon 1.2V 2700 mAh batteries, set of 4▪ 1 x battery charger.▪ operating manual plus CD-ROM with drivers and demo version of

the "measure Cobra4" measuring software▪ incl. FREE evaluation software, experimental descriptions and

configuration settings for experiments

Cobra4 Mobile, for 8 work groups, incl. aluminium caseCobra4 Mobile, for 8 work groups, incl. aluminium case12621-8812621-88

Cobra4 Mobile, for 4 work groups, incl. plastic caseCobra4 Mobile, for 4 work groups, incl. plastic case12621-4412621-44



921

Cobra4 Supplementary set TESS, Wireless or USB:Cobra4 Supplementary set TESS, Wireless or USB:Mechanics, Electric Building Blocks, HeatMechanics, Electric Building Blocks, Heat


This attractive device set is ideally suited to perform computer assis-ted student experiments from the PHYWE TESS experiment sets Mech-anics ME 1/2, Electric Building Blocks system EB 1/2 and Heat WE 1/2.

BenefitsBenefits

This set enables the easy and convenient performance of more than20 experiments (see manual 01332-02).


▪ 2 x Cobra4 Sensor-Unit Temperature, semiconductor -20...110°C▪ 1 x Cobra4 Sensor-Unit Electricity Current/ Voltage 6 A, 30 V▪ 1 x Cobra4 Sensor-Unit Force 4 N

Wireless version: 1 x Cobra4 Wireless-Link, 1 x Cobra4 Wireless Man-ager

USB version: 1 x Cobra4 USB Link

Required accessoriesRequired accessories

1 x "measure Cobra4" measuring sofware incl. data analysis software"measure", experimental descriptions and configuration settings forexperiments (14550-61)

Cobra4 Wireless, Student set TESS Mechanics, Heat, ElectricityCobra4 Wireless, Student set TESS Mechanics, Heat, Electricity12604-8812604-88

Cobra4 USB, Student set TESS Mechanics, Heat, ElectricityCobra4 USB, Student set TESS Mechanics, Heat, Electricity12604-6612604-66

TESS advanced Physics Manual Cobra4 Mechanics, Heat,TESS advanced Physics Manual Cobra4 Mechanics, Heat,Electricity/ ElectronicsElectricity/ Electronics01332-0201332-02

Thermal equilibriumThermal equilibrium

Why do tea or coffee get cold onstanding, but never hot?




TESS advanced Physik Handbuch Cobra4 Mechanik, Wärme, Elektrik/ Elektronik01332-0101332-01 German

TESS advanced Physics Manual Cobra4 Mechanics, Heat, Electricity/Electronics01332-0201332-02 English

P1042260P1042260



The Cobra4 Mobile-Link is a modern, high performance hand measur-ing device for mobile data recording, to which all Cobra4 Sensor-Unitscan be connected via secure plug-in/lockable connection.

Benefits:Benefits:

▪ Up to 1,000 measuring values/sec.▪ Data can be saved on an SD memory card▪ Automatic detection of all Cobra4 Sensor-Units▪ Foolproof navigation with central navigation cross▪ "measure" evaluation software can be used for FREE▪ Water-resistant and reliable for outdoor work.

The Cobra4 MobileLink is ideal for use in:

▪ Students experiments with no computer (as a digital multi-meterfor numerous measuring parameters)

▪ Outdoor experiments with student groups▪ Project days, trips, schoolhiking days etc.


▪ Power supply: 2 x Mignon batteries▪ Power consumption: < 300 mA▪ Data storage: Max. 2 GB SD card▪ Data rate: 1,000 values/s▪ Dimensions: L x B x H: 155x65x35 mm▪ Weight: 200 g▪ 2 Mignon 2,700 mAh batteries▪ 1 GB SD memory card▪ operating manual plus CD-ROM with drivers and demo version of

the "measureCobra4" measuring software▪ FREE evaluation software, experiments descriptions and configur-

ation settings for experiments




922


SD memory card for Cobra4-Mobile-Link, 2 GB, 20MB/secSD memory card for Cobra4-Mobile-Link, 2 GB, 20MB/sec12620-0112620-01

SD card readerSD card reader12620-0312620-03

Cobra4 Display-Connect, Set of transmitter andCobra4 Display-Connect, Set of transmitter andreceiver for using the Cobra4 Mobile-Link with large-receiver for using the Cobra4 Mobile-Link with large-scale displaysscale displays


Device combination from a sender and a receiver for the radio-basedcommunication between a Cobra4 Mobile Link and up to 2 digitallarge displays.

Benefits:Benefits:

▪ The system works with 5 switchable send channels at a carrierfrequency of 433 MHz.

▪ With this set it is possible to represent the measured valueswellreadable for a big auditory in a classroom or lecture hall.

▪ For this purpose must the transmit unit only be inserted betweenan any Cobra4 SensorUnit and the Cobra4 Mobile-Link.

▪ The receiver unit is pluged into the input socket of the digitallarge display.

▪ The current supply of the sender and receivers occurs in each casevia the devices at those ones these are connected.

▪ A parallel write-out of a series of measurements to the SD-Cardof the Mobile-Link is possible.

Cobra4 Display-Connect, Set of transmitter and receiver forCobra4 Display-Connect, Set of transmitter and receiver forusing the Cobra4 Mobile-Link with large-scale displaysusing the Cobra4 Mobile-Link with large-scale displays12623-8812623-88

Cobra4 Display-Connect TX, transmitter for using the Cobra4Cobra4 Display-Connect TX, transmitter for using the Cobra4Mobile-Link with large-scale displaysMobile-Link with large-scale displays12623-0012623-00

Cobra4 Display-Connect TX, receiver for using the Cobra4Cobra4 Display-Connect TX, receiver for using the Cobra4Mobile-Link with large-scale displaysMobile-Link with large-scale displays12623-0112623-01

Large-scale display, digital, RS-232 portLarge-scale display, digital, RS-232 port07157-9307157-93



Thermocouples NiCr-Ni (type K)Thermocouples NiCr-Ni (type K)

Thermocouples, that can be connected to Cobra4 Sensor Units 2 x tem-perature, Thermodynamics and Chemistry.






Comming soonComming soon

Cobra4 Sensor-Unit LightCobra4 Sensor-Unit Light

Function and ApplicationsFunction and ApplicationsThe Cobra4 Sensor-Unit Light is a measuring recorder for light intens-ity measurements, which is controlled by micro-controller.

BenefitsBenefits

▪ It can be fitted with different luxmeter probes.▪ The Cobra4 Sensor-Unit Light can be connected to the Cobra4

Wireless-Link, the Cobra4 Mobile-Link, the Cobra4 Junior-Link or



923

the Cobra4 USB-Link using a secure and reliable plug-in / lockableconnection.

Equipment and technical dataEquipment and technical data▪ measuring range: 300 lx ...300 klx▪ Resolution: max. 0.15 lx▪ Dimensions: approx. 62 mm x 63 mm


▪ Luxmeter probe (12107-01)▪ Lux immersion probe, 10 m cable (07137-01)

12660-0012660-00

Cobra4 Sensor-Unit RadioactivityCobra4 Sensor-Unit Radioactivity

Function and ApplicationsFunction and ApplicationsThe Cobra4 Sensor-Unit Radioaktivity is a measuring recorder for ra-dioactive radiation, which is controlled by micro-controller.

BenefitsBenefits

▪ It can be fitted with different Geiger-Müller counter tubes.▪ The Cobra4 Sensor-Unit Radioacitivity can be connected to the Co-

bra4 Wireless-Link, the Cobra4 Mobile-Link, the Cobra4 Junior-Link or the Cobra4 USB-Link using a secure and reliable plug-in /lockable connection.


▪ Max. pulse frequency: 4x105 pulses per minute▪ Counter tube voltage: variable 100 … 650 V▪ Dimensions: approx. 62 mm x 63 mm


▪ Counter tube, type A (09025-11)▪ Counter tube, type B (09005-00)▪ Counter tube, GM, 45 mm (09007-00)

12665-0012665-00

Cobra4 Sensor-Unit Dissolved oxygenCobra4 Sensor-Unit Dissolved oxygen

Function and ApplicationsFunction and ApplicationsThe Cobra4 Sensor-Unit Dissoved oxygen is a measuring recorder foroxygen in solutions, which is controlled by micro-controller.

BenefitsBenefits

▪ It can be fitted with an oxygen probe.▪ The Cobra4 Sensor-Unit Dissoved oxygen can be connected to the

Cobra4 Wireless-Link, the Cobra4 Mobile-Link, the Cobra4 Junior-Link or the Cobra4 USB-Link using a secure and reliable plug-in /lockable connection.


▪ O2-concentration: 0…30 mg/l▪ Dimensions: approx. 62 mm x 63 mm

(available from 2012)

12676-0012676-00

Cobra4 JUNIOR-Link, Basic Set Physics for 5 groups,Cobra4 JUNIOR-Link, Basic Set Physics for 5 groups,incl. Software, Handbook and aluminium caseincl. Software, Handbook and aluminium case

Function and ApplicationsFunction and ApplicationsThis attractive device set is ideally suited to computer-aided studentexperiments in the field of physics and containes all needed devicesfor 5 working groups.

BenefitsBenefits

▪ By recording values with the help of the Cobra4 Junior-Link, ex-periments can conveniently be carried out.

▪ The optimum use of this device set is in the area of student ex-periments.


▪ 5 x Cobra4 Junior-Link▪ 5 x Cobra4 Sensor-Unit Force ± 40 N▪ 5 x Cobra4 Sensor-Unit Energy▪ 5 x Cobra4 Sensor-Unit Thermodynamics,pressure abs. 2 bar and

2 temperature NiCr-Ni▪ 5 x Immersion probe NiCr-Ni, steel, -50...400°C▪ 1 x "measure Cobra4" software, individual work station and

school licence.▪ Delivered in a stable aluminium case

12616-8912616-89



924

Cobra4 JUNIOR-Link, Basic Set Chemistry for 5 groups,Cobra4 JUNIOR-Link, Basic Set Chemistry for 5 groups,incl. Software, Handbook and aluminium caseincl. Software, Handbook and aluminium case

Function and ApplicationsFunction and ApplicationsThis attractive device set is ideally suited to computer-aided studentexperiments in the field of chemistry and containes all needed devicesfor 5 working groups.

BenefitsBenefits




▪ 5 x Cobra4 Junior-Link▪ 5 x Cobra4 Sensor-Unit Chemistry, pH and 2 x Temperature NiCr-

Ni▪ 5 x Immersion probe NiCr-Ni, teflon, 200°C▪ 5 x pH-electrode, plastic, refill., BNC▪ 5 x Cobra4 Sensor-Unit Conductivity, with stainless steel elec-

trodes▪ 1 x "measure Cobra4" software, individual work station and


12617-8912617-89

Cobra4 JUNIOR-Link, Basic Set Biology for 5 groups,Cobra4 JUNIOR-Link, Basic Set Biology for 5 groups,incl. Software, Handbook and aluminium caseincl. Software, Handbook and aluminium case

Function and ApplicationsFunction and ApplicationsThis attractive device set is ideally suited to computer-aided studentexperiments in the field of bgiology and containes all needed devicesfor 5 working groups.

BenefitsBenefits




▪ 5 x Cobra4 Junior-Link▪ 5 x Cobra4 Sensor-Unit Temperature, semiconductor -20...110°C

▪ 5 x Cobra4 Sensor-Unit Weather: Humidity, Air pressure, Temper-ature, Light intensity, Altitude

▪ 5 x Cobra4 Sensor-Unit Pulse, Heart rate, incl. ear clip▪ 5 x Cobra4 Sensor-Unit Spirometry▪ 1 x "measure Cobra4" software, individual work station and


12618-8912618-89



925



926



927

All Cobra3 devices are listed in the following order:

• Sets• Literature• Basic units• Software modules• Measuring modules and accessories• General accessories

You will find further information on articles, manuals and experi-ments in the respective chapters and on the PHYWE website.

SetsSets

As well as the classical sets consisting of a basic unit and a se-lection of sensors for the different specialist departments, thereexists a selection of sets which include everything to cover wholeproject areas. For example, gas laws, basics of electrics/electronics,calorimetry, neurobiology or plant physiology.

Cobra3 Physics setCobra3 Physics set

The Physics Set consist of:

Cobra3 BASIC-Unit, Power Supply 12 V/ 2A, Data cable, plug/ socket,9 pole, Software Cobra3 Universal recorder, Software Cobra3 Timer/Counter, Software Cobra3 Translat./ Rotation, Software Cobra3 Tem-perature, Software Cobra3 Fourier analysis, Ligth barrier comact,Photo diode, G1, Wire resistor, 0.2 Ohm, 2 W, G1, Temperature sensor,-10...120 °C, Beam stopper, Measuring microphone with amplifier,Handbook Physics, computer assisted experiments with Cobra3

12171-7712171-77

Cobra3 Biology setCobra3 Biology set


Analog/ digital computer interface including all components necessaryto take measurements of the following parameters:

temperature, pressure, pH/potential, light intensity, cardiac and vas-cular sounds, heart rate, voltage.


Cobra3 Biology Set contents:

computer interface with 7 measuring inputs, of which 5 are analoginputs and 2 are digital inputs, sampling rate 500kHz, analog outputwith a voltage range of +/-10V, voltage output (5V at 0.2A), USB, incl.USB cable, External power supply, Software Universal Recorder, Soft-ware Temperature, Software Pressure, Software pH/potential

Pressure measuring module

pH/potential measuring module, pH electrode, polythene-sheathed,Photo diode, in G1 housing, 2 temperature sensors, -20...110°C,Acoustic measuring probe, with FET amplifier, Handbook Chemistry/Bi-ology, computerassisted experiments

12173-7712173-77

Fundamentals of electricity and electronics, 10Fundamentals of electricity and electronics, 10experiments with FG moduleexperiments with FG module


Multifunctional and easy adaptable basic set for computer-based ana-lysis of current and voltage characteristics, especially for very fast sig-nal response (500 kHz) and dependance of frequencies for practicalsand demonstration. The set contains everything for the performanceof the following experiments:

▪ Ohm´s law▪ Characterics of semiconductors (Diodes, Transistors)▪ Switch on behaviour of capacitors▪ Switch on behaviour of coils▪ Coil in AC circuit▪ Capacitor in AC circuit▪ Inductance of solenoids▪ Magnetic induction▪ RLC-circuit▪ High-pass and low-pass filters

12111-8812111-88



928

Set calorimetry, 230 VSet calorimetry, 230 V


With this setup a great number of measurements to heat capacities,reaction enthalpies, solution enthalpies, neutralisation enthalpies,melting enthalpies and enthalpies of mixtures can be carried out.


This set allows to execute the measurements in a didactical clear andeasy way:

▪ the transparent calorimetric vessel allows at every time a free in-sight into the system

▪ the heat capacity of the calorimetric system itself is determinedespecially conveniently by supplying an exactly known amount ofelectric heating energy to the system

Equipment and Technical DataEquipment and Technical Data

It will be delivered complete with tripod material and all necessarysmall hardware items.

▪ Calorimeter, transparent▪ Heating coil with sockets▪ Magnetic stirrer▪ Work and power meter▪ Universal power supply▪ Small hardware items- CD with literature

Not included are temperature measuring instruments. Accessory dataacquisition set with Cobra3 Basic Unit for recording the temperatureby means of a PC.

43030-8843030-88

Cobra3 Data acquisition set for set calorimetryCobra3 Data acquisition set for set calorimetry


This set allows the computer-assisted measuring and evaluation oftemperature in a comfortable way for experiments with the "Setcalorimetry".


Because the temperature data are recorded with a PC it is very easy toanalyse and represent the results fast and graphically.

Equipment and Technical DataEquipment and Technical Data

The set is completely supplied with all small hardware items whichare required to mount the temperature probe in the calorimetric ves-sel. Scope of delivery:

Cobra3 BASIC-UNI USB, Power supply unit 12 V DC/ 2 A, SoftwareCobra3 Temperature, Measuring module, Temperature Pt100, Temper-ature probe, immersion type, Pt100, Small hardware items

43030-3043030-30

Set gas laws with glass jacket, 230 VSet gas laws with glass jacket, 230 V

Function and ApplicationsFunction and ApplicationsWith this set, experiments on the following topics can be carried out:

▪ Gas law of Boyle-Mariotte▪ Gas law of Gay-Lussac▪ Gas law of Amonton (Charles)▪ Determination of molar masses according to the vapor density

method

BenefitsBenefitsThis set allows to execute the measurements in a didactical clear andeasy understandable way:

▪ clear set-up▪ easy to understand▪ completely mercury-free▪ quickly to execute▪ short preparation time

Equipment and technical dataEquipment and technical dataIt will be delivered complete with tripod material and all necessarysmall hardware items:

▪ Glass jacket▪ Gas syringe▪ Heater▪ Tripod material▪ Small hardware items▪ CD with literature

Not included are measuring instruments as thermometers or mano-meters.

AccessoriesAccessoriesData acquisition set with Cobra3 Basic unit for recording the meas-ured data by means of a PC.

43003-8843003-88

Cobra3 Data acquisition set for set gas lawsCobra3 Data acquisition set for set gas laws

43003-3043003-30



929

Cobra3 Set automatic titration, 230 VCobra3 Set automatic titration, 230 V


With this setup titrations can be carried out completely automatised,e.g. quantitative analyses, determination of concentrations, determ-ination of dissociation constants of weak bases and acids.

BenefitsBenefits

This set allows to execute measurements in a didactical clear and easyway:

All system components are visible and thus easily identifiable, Precise,reproducible results, Because measured values are recorded with aninterface the titration curves can be presented easily


Tripod material and all necessary small hardware items., Co-bra3-Chem Unit, Software "measure", pH-electrode, Immersion tem-perature probe, Teflon, Motor piston burette, Magnetic stirrer, Smallhardware items, CD with literature


Conductivity-probe for the recording of conductivity titrations

43040-8843040-88

Cobra3 set pH titration with drop counter, 230 VCobra3 set pH titration with drop counter, 230 V


With this set titrations can be carriedout, at which the volume ofaddedreagent is determined with a dropcounter. This kind of ap-plication isfaster and more comfortable than amanual application.Possiblemeasurements are e.g. quantitativeanalyses, determinationofconcentrations, determination ofdissociation constants of weakbasesand acids.

BenefitsBenefits

This set allows to execute themeasurements in a didactical clear an-deasy way:- small costs- easy to understand for the students- quicklyto execute- because the measured values arerecorded with an inter-face thetitration curves can be representedeasily


It will be delivered complete withtripod material and all necessarysmallhardware items:- Cobra3-ChemUnit- Software measure- pH-electrode- Immersion temperature probe, Teflon- Drop counter- Mag-netic stirrer- Small hardware items- CD with literature


Conductivity-probe for the recordingof conductivity titration

43050-8843050-88

Electrophysiology Lab, 230 VElectrophysiology Lab, 230 V


Complete instrument set to perform computer-assisted standard ex-periments covering human and animal physiology: heart, muscle, eye,nerve.


computer interface with USB port, seven measurement inputs (5 ana-log and 2 digital), voltage output (5V and 0.2A) for 4mm connectors,data transfer rate 500 kHz, online frequency analysis, Bio-Amplifierwith 100x and 1000x signal amplification and measurement settingsfor ECG, EMG and EOG, radial reflex hammer for the mechanical trig-gering of an inpulse to be connected directly to the computerinter-face, with radial switch in the hammer head to start measurement,incl. 2 m long cable and two 4 mm plugs, electrode collecting cable toconnect ECG and EMG electrodes, with color-coded cables (red, yellow,green), three stainless steel ECG electrodes, contact area 30 x 80 mmwith connectors for electrode collecting cable, three EMG electrodeswith cable and 2 mm-miniature connector, electrode gel to improvecontact between electrodes and skin, storage box for accessories.

65981-6665981-66

Cobra3 Basic set Biochemistry and plant physiologyCobra3 Basic set Biochemistry and plant physiology





930



The instrument set consists of


▪ Sampling rate 500 kHz▪ Online frequency analyser

Sensors for

▪ Temperature -20...110°C▪ pH/ potential▪ Conductivity▪ Pressure▪ Software for data analysis▪ Lamp socket with reflector (diameter 20 cm) and 120 W filament

lamp▪ Special glassware▪ Special stand material for the experiment setups

Required Accessories

▪ Standard lab equipment and chemicals

Basic set Biochemistry and plant physiology (Cobra3)Basic set Biochemistry and plant physiology (Cobra3)65980-8865980-88


Cobra3-Set NeurobiologyCobra3-Set Neurobiology


Complete instrument set consisting of neuron unit, operating unit,computer interface, measure software for data acquisition and ana-lysis, various cables and manual.

BenefitsBenefits

▪ With this instrument set 13 experiments covering the topic"nerve cell" can be performed.

▪ Optional upgrade available to perform additional experimentsabout nerve cell interactions and neuronal networks.


▪ Computer interface: 7 measurement inputs (5 analog and 2 digit-al inputs)

▪ One voltage output (5V and 0.2A) with 4 mm sockets▪ Sampling rate 500 kHz and online frequency analyser.

Operating unit

▪ 4 output channels which generate "muscle and sense signals",also serves as supply power to operate up to 4 neuron units.

Neuron unit

▪ Simulates a generalised nerve cell with an apical dendrite and itssynaptic contacts, a cell body (soma) and a nerve fibre (axon) withmyelin sheathes and a Ranvier's ring.

▪ The dendrite comprises exciting, inhibiting, presynaptic andHebbian synapses which are marked by the corresponding coloursof the sockets.

▪ Here the axons end in presynaptic buttons.▪ These are represented together with a part of the (afferent) fibre

providing the signal.▪ The connection between the (efferent) axon of a neuron unit

which leads away or the stimulus output socket of the operatingunit and a synapse is established by means of a white cable whichis inserted into the desired synapse socket.

▪ The yellow sockets serve for the derivation of the state of excite-ment of the simulated neuron.

▪ They are connected to a computer interface.▪ The action potentials can be made audible with the aid of the in-

tegrated acoustic monitor.▪ The turning knob "S" serves for setting the "firing threshold" of

the neuron.

Neurobiology Lab, 230 VNeurobiology Lab, 230 V65963-1165963-11

Additional nerve cellAdditional nerve cell65963-1065963-10

Cobra3, literatureCobra3, literature

The diverse possibilities which the Cobra3 family offers are com-bined into extensive experiment collections. This includes, for ex-ample, more than 140140 demonstration experiments and more than120120 experiments for college practical training in scientific special-ist departments.

Handbook Cobra3, Physics Computer-assisted experiments withHandbook Cobra3, Physics Computer-assisted experiments withCobra3Cobra301310-0201310-02

Demo advanced Chemistry / Biology Manual Cobra3 (C3BT)Demo advanced Chemistry / Biology Manual Cobra3 (C3BT)01320-0201320-02

Neurosimulator HandbookNeurosimulator Handbook01191-0201191-02

TESS expert Handbook Laboratory Experiments PhysicsTESS expert Handbook Laboratory Experiments Physics16508-0216508-02

TESS expert Handbook Laboratory Experiments PhysicsTESS expert Handbook Laboratory Experiments Physics16502-3216502-32

TESS expert Handbook Laboratory Experiments CHEMISTRYTESS expert Handbook Laboratory Experiments CHEMISTRY16504-1216504-12

Labortory Experiments Biol., L.V.Labortory Experiments Biol., L.V.16506-0216506-02



931

Cobra3, basic unitsCobra3, basic units

There are four basic units, of which up to 8 items can be cascaded.As well as the COM-UNIT, which replaces the computer, and theDISPLAY UNIT, which can be used as a demo-display unit in connec-tion with the other basic units, the BASIC UNIT and the CHEM UNITplay a central role as actual basic units for data acquisition.

Cobra3 Basic-Unit, USBCobra3 Basic-Unit, USB


Computer interface for measurement and control in naturalscienceeducation (physics, chemistry and biology).

BenefitsBenefits

▪ Operation either with PC (USB port) or with special operation unit(COM-Unit).

▪ Upgrade for measurement of non-electrical quantities by use ofplug-in modules.


3 analog input channels

▪ Module port: ± 10 V▪ Connection type: 25-pole Sub-D▪ Sensor port 1: ± 30/ 10 V▪ Connection type: 4 mm socket▪ 9-pole Sub-D▪ Input: grounded▪ Input resistance: 500 kOhm▪ Sensor port 2: ± 30/10/3/1/0.3/0.1 V▪ Connection type: 4 mm sockets▪ 9-pole Sub-D▪ Difference potential input: Input resistance: 1 MOhm

For all analog inputs

▪ Maximum sampling rate: 500 kHz▪ Online sampling rate: 5 kHz▪ Burst-mode: 5 Hz...500 kHz▪ Resolution: 12 bit▪ Voltage protection: 230 V AC▪ Trigger: adjustable

Timer/Counter 1

▪ Number of counts: 32 bit▪ Resolution: 800 ns▪ Connection type: 4 mm sockets

Timer/Counter 2

▪ Number of counts: 40 bit▪ Resolution: 200 ns▪ Connection type: 4 mm sockets▪ Analog control output: ± 10 V▪ Resolution: 12 bit▪ Connection type: 9-pole Sub-D

General data

▪ Supply voltage: 12 V DC/ 6 W

▪ Interface: USB▪ Data transfer rate: 115200 bit/s▪ Memory: 12000 values▪ Dimensions (mm): 190 x 135 x 90▪ Fail-safe plastic housing with support feet, several fixation pos-

sibilities and lateral docking option for further units.

Included accessories

▪ USB Cable

Required accessoires:

▪ Cobra3 Power supply (12150-99)

Cobra3 BASIC-UNIT, USBCobra3 BASIC-UNIT, USB12150-5012150-50


Cobra3 Chem-UnitCobra3 Chem-Unit

Function and applicationFunction and application

Allows to measure all important measuring quantities in chemistryand biology.


You can run the Chem-Unit with a computer (via serial interface) orwithout a computer (combined with the Com-Unit).

Equipment and specification:Equipment and specification:

Inputs:

▪ pH/potential: 0...14 pH (0.01 pH); -2.2...+2.2 V (+/- 1 mV) 10Giga-Ohm, BNC

▪ Conductivity: 6 ranges of measurement: 0...1000 mS/cm; pH/Potential and conductivity are electrically isolated

▪ Temperature: NiCr-Ni thermoelement T1, T2, T3; -100...1500°C▪ Temperature: Pt1000 sensor T4; measuring range -100...850°C▪ Temperature sensor in housing T0; measuring range 0...85 °C.▪ Analog In: 3 measuring ranges +/-3.2V; 32V; 81V▪ TTL In/Out for drop counter or motor piston burett▪ Voltage output: 5V / 0.2 A e.g.for drop counter▪ Connections RS232-D-Sub-9 jack-Bit rate up to 115200 bit/s▪ Voltage supply 12V/ 6W▪ Shock-resistant plastic housing with support bases, a wide range

of fixing possibilities and two lateral connectors for cascadingfurther units

Cobra3 Chem-UnitCobra3 Chem-Unit12153-0012153-00




932

Cobra3 Display-UnitCobra3 Display-Unit


For large display of electrical and nonelectrical measured values andtheir units in combination with:

▪ Cobra3 Basic-Unit and Com-Unit with modules

▪ Cobra3 Chem-Unit and Com-Unit, hand-held measuring devicesand electronic balances

Cobra3 Display UnitCobra3 Display Unit12154-0012154-00


Cobra3 Com-UnitCobra3 Com-Unit


For using the Cobra3 Basic-Unit without a computer.

Benefits:Benefits:

▪ Easy connection to the Basic-Unit by plugging it into the lateraledge connector.

▪ LCD display with background lighting for selecting and presentingthe measurement data.

▪ It is possible to connect large-format displays for demonstrationpurposes.

▪ Selection wheel for a comfortable use of the menu and for enter-ing data.

Power supply (12151-99) required.

Cobra3-Com-UnitCobra3-Com-Unit12152-0012152-00


Cobra3, software modulesCobra3, software modules

As well as the free software measure, with the aid of which allmeasured data can be evaluated securely and reliably, and inter-connections represented rapidly, there are specially-coordinatedsoftware modules for every application. The selection is orientedeither to the measurement variable or the project area of the ex-periment, or the universal applicability of the Cobra3 measured-value recording system.

Further Cobra3 software modulesFurther Cobra3 software modules

Software Cobra3 Universal recorderSoftware Cobra3 Universal recorder14504-6114504-61

Software Cobra3 PowerGraphSoftware Cobra3 PowerGraph14525-6114525-61

Software Cobra3 Chem-UnitSoftware Cobra3 Chem-Unit14520-6114520-61

Software COBRA3 TemperatureSoftware COBRA3 Temperature14503-6114503-61

Software Cobra3, OxygenSoftware Cobra3, Oxygen14505-6114505-61

Software Cobra3 RadioactivitySoftware Cobra3 Radioactivity14506-6114506-61

Software Cobra3, LuxSoftware Cobra3, Lux14507-6114507-61

Software Cobra3 ConductivitySoftware Cobra3 Conductivity14508-6114508-61

Software Cobra3 pH and potentialSoftware Cobra3 pH and potential14509-6114509-61

Software Cobra3, PressureSoftware Cobra3, Pressure14510-6114510-61

Software Cobra3 Timer/CounterSoftware Cobra3 Timer/Counter14511-6114511-61

Software Cobra3-Force/ TeslaSoftware Cobra3-Force/ Tesla14515-6114515-61

Softw. Cobra3 translat./rotationSoftw. Cobra3 translat./rotation14512-6114512-61

Software Cobra3 - Fourier analysisSoftware Cobra3 - Fourier analysis14514-6114514-61

Software Cobra3 - gas lawsSoftware Cobra3 - gas laws14516-6114516-61

Software Cobra3-Weather stationSoftware Cobra3-Weather station14518-6114518-61

Software Cobra3-hall effectSoftware Cobra3-hall effect14521-6114521-61

Software package Cobra3 for BASIC- and CHEM-UNITSoftware package Cobra3 for BASIC- and CHEM-UNIT14540-6114540-61



933

Cobra3, measurement modules and accessoriesCobra3, measurement modules and accessories

All necessary units for the recording of different measurementvariables, and/or for different subject areas:

• Current/ Voltage• Current, voltage, frequency• Arbitrary voltage signals• Movement• Force• Charging• Acoustics, heart and vascular sound processing• Temperature• Pressure• Gas laws• Meteorological data• Light strength/ light intensity• Magnetic field• Radioactivity• Hall effect• pH-value and potential• Conductance• Titration• Scales• Dissolved oxygen• Nerve physiology

Measurement context: Voltage and currentMeasurement context: Voltage and current

Cobra3 Current probesCobra3 Current probes


These galvanically separated sensors serve for measurements of directand alternating currents.


Plastic housing with 4-mm safety sockets. 350-mm data cable en-abling the connection to the appropriate interface. Dimensions ofsensors: 97 x 42 x 25 (mm). Weight: approx. 0.12 kg.

Current probe 6 A:

▪ Measuring range: 6 A, 0.6 A▪ Continuous current: max. 6 A▪ Accuracy: +/- 1.5 %▪ Resolution: 0.1 % (of end value of measuring range)▪ Limiting frequency: 20 kHz▪ Continuity resistance: < 0.02 Ohm

Current probe 30 A:

▪ Measuring range: 30 A, 3 A▪ Continuous current: max. 25 A▪ Accuracy: +/- 1.5%▪ Resolution: 0.1 % (of end value of measuring range)

▪ Limiting frequency: 20 kHz▪ Continuity resistance: < 0.01 Ohm

Cobra3 current probe 6ACobra3 current probe 6A12126-0012126-00

Cobra3 current probe 30ACobra3 current probe 30A12127-0012127-00

Cobra3 Industry-Sensor-AdapterCobra3 Industry-Sensor-Adapter


The Industry sensor adapter is used to adapt commercially availableindustrial sensors with 2-, 3- and 4-conductor technology to the Co-bra3 interfacesystem.

Benefits:Benefits:

▪ All sensor signals are converted into the Cobra3-typical 0...10 Vsignal.


▪ Supply voltage output: 24 V DC/50 mA

max. Signal input:

▪ 2-conductor 4...20 mA: R_i = 500 Ohm▪ 3-conductor 0...20 mA: R_i = 500 Ohm▪ 4-conductor 0...10 mA: R_i = 130 kOhm▪ Signal output (Cobra3):0...10 V or 2...10 V DC▪ Resolution 5 mV (corresponds to 10 mA sensor signal)

12132-0012132-00






934

MeasurementMeasurement context:context: Current,Current, voltage,voltage, frequencyfrequency --programmable voltage and current sourceprogrammable voltage and current source

Cobra3 Measuring module function generatorCobra3 Measuring module function generator


Plug-in measurement module for generating sinusoidal, square-waveand triangular-wave signals, direct voltages and frequency- orvoltage-ramps.

Benefits:Benefits:

The module can be used as a voltage or current source:

▪ If it is used as a voltage source, the actual frequency and currentcan be displayed and measured during operation

▪ If it is used as a current source, the actual frequency and voltagecan be displayed and measured.

▪ In addition, up to 2 measurement quantities can be recorded andevaluated with the help of an interface.


Frequency ranges:

▪ Range 1: 200 Hz-20 kHz▪ Interval: 10 Hz▪ Range 2: 2 Hz-200 Hz▪ Interval: 1 Hz▪ Signal form: Sinusoidal, square-wave, triangular-wave signals,

direct voltages and frequency- or voltage-ramps

Voltage source:

▪ Amplitude: 0 V...10 V▪ Interval: 5 mV▪ Offset voltage: -10 V...10 V(adjustable)

Current source:

▪ Amplitude: 0 mA...100 mA▪ Interval: 5 mA▪ Offset current: 100 mA...100 mA

12111-0012111-00



Measurement context: Arbitrary voltage signalsMeasurement context: Arbitrary voltage signals

Measuring devices with analogue outputMeasuring devices with analogue output

Meter for Stirling engine, pVnTMeter for Stirling engine, pVnT04371-9704371-97

Control Unit for Si-PhotodetectorControl Unit for Si-Photodetector08735-9908735-99

Control unit gas chromatographControl unit gas chromatograph36670-9936670-99

Biological amplifierBiological amplifier65961-9365961-93

Stirling engine with Cobra3Stirling engine with Cobra3

PrinciplePrinciple

The Stirling engine is submitted to a load by means of an ad-justable torquemeter, or by a coupled generator. Rotation fre-quency and temperature changes of the Stirling engine are ob-served. Effective mechanical energy and power, as well as effectiveelectrical power, are assessed as a function of rotation frequency.The amount of energy converted to work per cycle can be determ-



935

ined with the assistance of the pV diagram. The efficiency of theStirling engine can be estimated.

TasksTasks

1. Determination of the burner's thermal efficiency2. Calibration of the sensor unit.3. Calculation of the total energy produced by the engine

through determination of the cycle area on the oscilloscopescreen, using transparent paper and coordinate paper.

4. Assessment of the mechanical work per revolution, and cal-culation of the mechanical power output as a function of therotation frequency, with the assistance of the torque meter.

5. Assessment of the electric power output as a function of therotation frequency.

6. Efficiency assessment.


First and second law of thermodynamics, Reversible cycles, Iso-choric and isothermal changes, Gas jaws, Efficiency, Stirling en-gine, Conversion of heat, Thermal pump


TESS expert Handbook Laboratory Experiments Physics16502-3216502-32 English

P2360415P2360415

Measurement context: MovementMeasurement context: Movement

Movement sensor with cableMovement sensor with cable


Low-friction incremental decoder with a high resolution to detectrotary movements and linear movements.


▪ String grooves Ø6 mm, 12 mm.▪ dimensions: (72x34x113) mm▪ Plastic housing with mounting shaft and cable▪ Resolution 512 steps / revolution

12004-1012004-10

Light barrier, compactLight barrier, compact


Universal fork-type light barrier to measure short and long shadow-ingperiods.

Benefits:Benefits:

▪ An incremental wheel with a string groove which can be attachedto the fork of the light barrier allows to measure paths by count-ing the ribs of the incremental wheel.

▪ Areas of application: track experiments, freefall, pendulum ex-periments, leaf springoscillations, drop counters, volumetricmeasurements concerning the gas laws.


▪ Dimensions: 40 x 40 mm▪ Supply voltage: 5 V

11207-2011207-20

Softw. Cobra3 translat./rotationSoftw. Cobra3 translat./rotation

14512-6114512-61

Falling sphere apparatusFalling sphere apparatus

Function and technical dataFunction and technical data

Determination of the gravitational acceleration of the earth withgreat precision.

Benefits:Benefits:

▪ The exclusively mechanical retention of the falling body allows toavoid mistakes caused by residual magnetism from electromag-netic retention systems for precision measurements of the fallingtimes of a free falling ball.



936

▪ Release unit with ball for timely defined local release of suitedbodies, e.g. balls, falling rods,etc.

▪ Impact switch release and impacts witch are fixed to a support bymeans of clamps.

▪ This allows to determine the falling trajectory arbitrarily.


▪ Release unit with ball▪ Impact switch

02502-8802502-88



Beam stopperBeam stopper02504-0002504-00

Measurement context: ForceMeasurement context: Force

Cobra3 Measuring module NewtonCobra3 Measuring module Newton


Plug-in module for measuring forces in conjunction with the Newtonsensor (no.12110.01).

Benefits:Benefits:

Especially suitable for experiments dealing with extremely smallforces, e.g. surface tension experiments, Coulomb's law, current bal-ance etc.


▪ Measuring ±4 mN, ±40 mN, ranges ±400 mN, ±4 N▪ Resolution 0.0035 mN,0.035 mN, 0.35 mN, 3.5 mN▪ Compensation± 4 N in every measuring range.▪ Dimensions: (100x50x40) mm

12110-0012110-00

Newton sensorNewton sensor


For connecting to the COBRA3 force measurement module. Metal cas-ing with load-bearing hooks for tension forces and load plate forhandling compression forces.


▪ With mounting rod and fixed mains lead▪ End limit sensors for overload protection▪ Lifting range 0.4 mm/N approx.▪ Measuring range: max. +/- 4 N▪ Resolution: max. +/- 0.0035 mN▪ Compensation: +/- 4 N▪ Dimensions (mm): 62 x 40 x 120

12110-0112110-01

Cobra3 newton sensor +/- 50NCobra3 newton sensor +/- 50N




937

Force sensor with 4 strain gauges in full bridge circuit, with tare func-tion, load hooks and fixing screw for assembly to stands.

Benefits:Benefits:

▪ With 1.9 m fixed cable between sensor and probe▪ Including 350 mm data cable 2 x Sub-D, 9-pin type.


▪ Measuring range: ± 50/15/5/1/0.5 N▪ Resolution: 0.1% of upper limit of effective range▪ Max. loading: 120 N▪ Limiting frequency: 500 Hz▪ Tare: possible in every measuring range max. 50 N▪ Dimensions (mm): 70 x 50 x 15▪ Weight (only sensor): 80 g

12125-0012125-00

Software Cobra3-Force/ TeslaSoftware Cobra3-Force/ Tesla

14515-6114515-61

Measurement context: ChargeMeasurement context: Charge



Operational amplifier with high resistance input for quasi-staticvoltage measurement and measurement of very small charges.

BenefitsBenefits

Suited for experiments with electrostatics, e.g. charge measurement,capacity measurement of sphere-capacitor, measurement of directvoltages, quasi-static measurements and measurement of small cur-rents.


▪ Power supply via 4 mm sockets or wall power supply with holesocket

▪ Operation temperature: 5...40°C▪ Relative humidity: < 80%▪ Gain/ amplification: 1.0▪ Input resistance: > 10000 GOhm▪ Input current: < 0.5 pA▪ Input capacitance: < 50 pF▪ Input voltage:▪ Amplifier (socket 1): ± 10 V-▪ 2. input (socket 2): 1 kV▪ Power supply: 12 V AC/25 mA hole socket: 2.1/5.5 mm or▪ External power source: 12 V AC25 mA 4 mm sockets▪ or: Cobra3 interface: ± 15 V RS232 socket▪ Output voltage: ± 10 V▪ Output current: 1 mA▪ Output resistance: < 500 Ohm▪ Dimensions H × W × D (mm): 65 × 113 × 35▪ Weight: 150 g



Electrometer AmplifierElectrometer Amplifier13621-0013621-00


MeasurementMeasurement context:context: Acoustics,Acoustics, heartheart andand vascularvascularsound processingsound processing

Measuring microphoneMeasuring microphone


With an integrated amplifier and three selectable output modes:level, signal,TTL-level.

Benefits:Benefits:

▪ Continuously adjustable amplification.▪ Amplifier with minimum current requirements.▪ Powered by a battery.▪ Automatic shutdown after about 90 min if powered by a battery.▪ Reactivation by means of a push-button.


▪ Frequency range: 30 Hz...20kHz, (15...30 Hz and 20...40 kHz) witha reduced reception

▪ 25 cm sensor tube (d = 8 mm) ensuring an interference-freemeasurement of soundfields

▪ Flexible shielded cable (l = 2m), BNC plug▪ threaded rod for secure fastening

03542-0003542-00



938

Measuring microphone w.amplifierMeasuring microphone w.amplifier


Electret capsule with 1.5 m long cable suitable for special investiga-tions, e.g. point shaped plotting of soundfields.


▪ Frequency range 30 Hz ... 20 kHz▪ Sensitivity 6.0 mV/Pa at 1 kHz▪ Gain 0 ... 1000 in phase with sound signal▪ Signal output 4V max. at 3 Ohm▪ Dimensions: (mm) 120 x 25 x 60

Required accessoryRequired accessory

▪ 9 V battery

03543-0003543-00

Acoustic probe for COBRA3Acoustic probe for COBRA3


Highly sensitive miniature microphone for measuring cardiac and vas-cular sound and for determining the heartbeat rate.


▪ Electret microphone with FET amplifier▪ Including a 1.5 m cable with 9-pin Sub-Dplug▪ Frequency range: 50 Hz...20 kHz

03544-0003544-00





Measurement context: TemperatureMeasurement context: Temperature

Cobra3, sensor -20..110 CCobra3, sensor -20..110 C


To be connected directly to the sensorports of the Cobra3 BASIC-UNIT.

Equipment and techical dataEquipment and techical data

▪ Sensor sheathing: stainless sationsteel▪ Diameter: 6 mm▪ Sensor length: 200 mm▪ Measuring range: -20°C...+110°C▪ Resolution: 0.2°C▪ Total length incl. cable: 1.5 m

12120-0012120-00

Cobra3 Measuring module, temp. NiCrNi, 330°CCobra3 Measuring module, temp. NiCrNi, 330°C


Plug-in module for measuring temperatures by means of NiCr-Ni ther-mocouples in the range of -50. 330°C.

BenefitsBenefits

▪ Can be combined with the pressure measuring module,e.g. to re-cord vapour-pressure diagramsor to compensate the influence ofthetemperature on the electric conductivity or the pH value insolutions together with the corresponding modules and sensors.


▪ Measuring range -50...333°C▪ Resolution: 0.2°C.



939

Measuring module, Temperature NiCr-Ni, 330°CMeasuring module, Temperature NiCr-Ni, 330°C12104-0012104-00






Measuring mod.,Temperature PT100Measuring mod.,Temperature PT100


Plug-in module for a high-resolution measurement of temperaturesusing Pt 100 sensors.

BenefitsBenefits

▪ Two sensors can be connected simultaneously (multiplexing).▪ Measurement of the temperature difference with a resolution of

0.01 K.


▪ Measuring range: -60...350°C▪ Resolution: 0.01 K

Measuring mod.,Temperature PT100Measuring mod.,Temperature PT10012102-0012102-00

Temp. probe, immersion type, Pt100, stainless steel,Temp. probe, immersion type, Pt100, stainless steel,-20...+300°C-20...+300°C11759-0111759-01

Surface temperature probe PT100, -20...+300°CSurface temperature probe PT100, -20...+300°C11759-0211759-02

Temp.probe, imm., PT100, -20...+300°C, teflonTemp.probe, imm., PT100, -20...+300°C, teflon11759-0411759-04


Temperature sensor Pt1000 with 4 mm plugTemperature sensor Pt1000 with 4 mm plugconnectors (for CHEM UNIT)connectors (for CHEM UNIT)


For temperature measurement and for automatic temperature com-pensation of the pH and conductance measurement, with the em-ployment of measurement cells, without built-in temperature sensor.Connection: 4 mm plug connector.

Temperature probe Pt-1000Temperature probe Pt-100013702-0113702-01

Temp. probe Pt-1000, 10m cableTemp. probe Pt-1000, 10m cable07139-0107139-01





Measurement context: PressureMeasurement context: Pressure

Cobra3 Pressure sensorsCobra3 Pressure sensors


Absolute and differential pressure sensors for overpressure and vacu-um systems. Can be used in combination with a Pc and the Cobra3Basic-Unit or without a PC combined with the Cobra3 Basic-Unit andthe Cobra3 Com-Unit.

BenefitsBenefits

▪ With hose connector and hose section for connecting the moduleto any type of peripheral equipment.

▪ Including data cable for Cobra3 sensors.




940

▪ 35 cm data cable▪ Measuring range: 80 mbar and 2.0 bar, respectively▪ Autorange: (80-8-2,4) mbar and (0.6-2.0) bar, respectively▪ Max. pressure: 750 mbar and 10 bar, respectively▪ Accuracy: 5 % and 1.5 %, respectively▪ Resolution: 0.05 %▪ Dimensions (mm): 75 x 42 x 25

Cobra3 press. sensor 2.0 bar abs.Cobra3 press. sensor 2.0 bar abs.12128-0012128-00

Cobra3 press. sensor 80 mbar diff.Cobra3 press. sensor 80 mbar diff.12130-0012130-00

Cobra3 press. sensor 2.0 bar diff.Cobra3 press. sensor 2.0 bar diff.12129-0012129-00



Software Cobra3-Weather stationSoftware Cobra3-Weather station14518-6114518-61


Measurement context: Gas lawsMeasurement context: Gas laws

Cobra3 Measuring module, pressureCobra3 Measuring module, pressure


Plug-in module for measuring pressures or pressure differences.

BenefitsBenefits

▪ With hose connector and hose section for connecting the moduleto any type of peripheral equipment (the vacuum rubber tubingno.39288.00 is recommended for extension purposes).

▪ The measuring module replaces mercury manometers or crushergauges normally used for studying the gas laws, for recordingvapour-pressure diagrams or for measuring the barometric pres-sure.

▪ Pressure sensor integrated in the measuring mod.


▪ Measuring range 0...2000 hPa▪ Resolution 0.5 hPa▪ Overload capacity up to 4000 hPa▪ Response time ≤1 ms▪ Suitable media: non-aggressive gases and liquids

Measuring module, pressureMeasuring module, pressure12103-0012103-00


Modulconverter COBRA3-mea.unitModulconverter COBRA3-mea.unit12150-0412150-04

Cobra3 Measuring module Temperature NiCr-Ni, 330°CCobra3 Measuring module Temperature NiCr-Ni, 330°C


Plug-in module for Cobra3 interface.


▪ Measuring range: -50...+330°C▪ Resolution: 0.2°C.▪ Dimensions (mm): 100 x 50 x 40



Cobra3, sensor -20..110 CCobra3, sensor -20..110 C12120-0012120-00

Software Cobra3 - gas lawsSoftware Cobra3 - gas laws

14516-6114516-61



941

Measurement context: Meteorological dataMeasurement context: Meteorological data






12121-0012121-00

Cup anemometer for Cobra3Cup anemometer for Cobra3


Wind sensor with large speed measurement range of 4 to 140 km/hfor fitting to masts or support rods or poles.

BenefitsBenefits

Can be screwed onto the tripod rod/pole (M6) or attached to any mastor jib using the fixing angle supplied.


▪ Operating temperature: o...+70°C▪ Measuring range: 1...40m/s resp. 4....140km/h▪ max. switching capacity: 0.6V▪ weight: 0.3kg▪ dimensions: 112 x 162 x 140 mm

12124-0012124-00

Software Cobra3-Weather stationSoftware Cobra3-Weather station

14518-6114518-61

MeasurementMeasurement context:context: LightLight strength/strength/ lightlight intens-intens-ityity

Photo diode, G1Photo diode, G1


Photo diode, G1


▪ Plastic housing (37 x 18 x 32 mm) with 4mm plugs in 19 mm spa-cing

▪ Open circuit voltage 380 mV at 1 klx▪ Short circuit current: approx. 35μA at 1klx

Photo diode, G1Photo diode, G139119-0139119-01

resistor 470 Ohm, 1W, G1resistor 470 Ohm, 1W, G139104-1539104-15



942

Cobra3 Measuring module luxCobra3 Measuring module lux


Plug-in module for measuring the illuminance.


▪ Measuring range selectable with the aid of the software.▪ Measuring Range, resolution: 300 Lx 0.15 Lx; 3 kLx1.5 Lx; 30 kLx

15 Lx; 300 kLx 150 Lx

Measuring module luxMeasuring module lux12107-0012107-00

Luxmeter probeLuxmeter probe12107-0112107-01


Software Cobra3, LuxSoftware Cobra3, Lux14507-6114507-61


Measurement context: Magnetic fieldMeasurement context: Magnetic field

Cobra3 Measuring module, TeslaCobra3 Measuring module, Tesla


Plug-in module for a precise measurement of magnetic DC and ACfields.


▪ Measurements possible from 5 µT to 1T.▪ Detection of the field direction (sign) in the case of DC fields.▪ Software-controlled zero adjustment and compensation of inter-

ference fields up to ± 1 T.▪ Readily calibrated, i.e. no calibration magnet necessary.▪ Use of the Hall probes of the teslameter no. 13610.93.▪ Measuring ranges: ± 10 mT, ± 100 mT, ± 1 T.▪ Max. resolution: 5 µT (12 bit).▪ Compensation ± 1 T in all measuring ranges.

Measuring module, TeslaMeasuring module, Tesla12109-0012109-00



Software Cobra3-Force/ TeslaSoftware Cobra3-Force/ Tesla14515-6114515-61




943

Measurement context: RadioactivityMeasurement context: Radioactivity

Cobra3 Counter tube moduleCobra3 Counter tube module

Counter tube moduleCounter tube module12106-0012106-00

Counter tube, type A, BNCCounter tube, type A, BNC09025-1109025-11

Counter tube, type BCounter tube, type B09005-0009005-00

Counter tube, GM, 45 mmCounter tube, GM, 45 mm


Highly sensitiv counter tube, especially suitable to investigate weaklyradioactive samples. Because of the large active area experimentswith natural beam sources deliver very good results.

BenefitsBenefits

In the implementation of student experiments a radioactive source isno longer necessary.


▪ Self-quenching halogen triggered tube with chrome-iron jacketand mica window, for investigating alpha-, beta- and gamma-rays.

▪ Handle for attachment included.▪ Including a grill protecting the counter tube.▪ Mica: 2 ...3 mg cm2

▪ Working voltage: 500 V▪ Plateau length: 200 V▪ Plateau increase: 0.04 %/ V▪ Dead time: about 100 µs▪ Zero effect: aboout 45 pulses/ min▪ Case diameter: 22 mm▪ Diameter of counter tube: 45 mm▪ Length of counter tube: 80 mm▪ Weight: 320 g

09007-0009007-00

Counter tube holder on fix. magn.Counter tube holder on fix. magn.


For base plate (09200-00) or Physics demonstration board(02120-00). For attaching counting tubes with 22 mm casing diamet-er.


Painted. Metal holder with placement marks and magnet with sturdynon-slip foil. Adhesive force 10 N.

Counter tube holder on fix.magn.Counter tube holder on fix.magn.09201-0009201-00

Holder f.counter tube largeHolder f.counter tube large09206-0009206-00

Screened cable, BNC, l 250 mmScreened cable, BNC, l 250 mm07542-1007542-10


Software Cobra3 RadioactivitySoftware Cobra3 Radioactivity14506-6114506-61




944

Measurement context: Hall effectMeasurement context: Hall effect

Hall effect moduleHall effect module


Hall module with central power supply to provide an adjustable con-stant current for the sample and for the integrated sample heater.

BenefitsBenefits

▪ digital LED display (3 digits, 9 mm) to show either the sample cur-rent or the sample temperature

▪ sample heater with fully automatic temperature control systemto avoid damage to the samples

▪ electronic compensating circuit for Hall voltage offset compensa-tion

▪ RS 232 interface to connect an interface for comfortable datacapturing, display and evaluation using a PC

▪ Different boards can be plugged easily and safely into the Hallmodule which requires only a 12 V AC power supply.

▪ The Hall module provides all operating parameters for thesamples and displays the sample.


▪ Max. current of probe: +/- 60 mA▪ Max. temperature of probe: 175 °C▪ Power supply: 12 V AC/ max. 3.5 A▪ Dimensions: 16 x 10.5 x 2.5 cm▪ Weight: 0.25 kg

Hall effect moduleHall effect module11801-0011801-00


Hall effect,n-Ge,carrier boardHall effect,n-Ge,carrier board11802-0111802-01

Hall effect,p-Ge,carrier boardHall effect,p-Ge,carrier board11805-0111805-01

Intrins.conduct.Ge,carrier boardIntrins.conduct.Ge,carrier board11807-0111807-01

Measuring module, TeslaMeasuring module, Tesla12109-0012109-00


Software Cobra3-hall effectSoftware Cobra3-hall effect14521-6114521-61

Measurement context: pH-value and potentialMeasurement context: pH-value and potential

Cobra3 Measuring module pH/ potentialCobra3 Measuring module pH/ potential


Plug-in module for measuring pH values and potentials.

BenefitsBenefits

▪ Front DIN-socket for pH probe.▪ Temperature probe calibration and compensation are software

controlled.▪ Plastic housing with D-sub-25-plug on the back .


▪ Range -2... +2 V▪ Resolution 1 mV▪ Input impedance 10 ohms exp. 12▪ Impact-resistant plastic housing▪ Dimensions: 100 x 50 x 40 mm

Measuring module pH/potentialMeasuring module pH/potential12101-0012101-00

pH electrode, sterilisablepH electrode, sterilisable18456-0018456-00

pH-electrode, shock resistantpH-electrode, shock resistant18452-0018452-00

pH-electrode, polythene sheathedpH-electrode, polythene sheathed18450-0018450-00

Reference electrode, AgClReference electrode, AgCl18475-0018475-00

Platin.electrode in prot.tube,8mmPlatin.electrode in prot.tube,8mm45206-0045206-00








945




Measurement context: ConductanceMeasurement context: Conductance

Cobra3 Measuring module ConductivityCobra3 Measuring module Conductivity


Plug-in module for conductivity measurements.

BenefitsBenefits

▪ Can be connected to the module port and/or sensor port 1 or 2(with moduleconverter and data cable)


▪ 4 Measuring ranges 0...0.2/2/20/200mS/cm▪ Measuring frequency approx. 4 kHz▪ dimensions: (100x50x40) mm▪ cell constant: 0,85...1,15/cm▪ Plastic housing with rear D-sub-25-plug

Measuring module ConductivityMeasuring module Conductivity12108-0012108-00

Conductivity probe K1Conductivity probe K118151-0218151-02





Measurement context: TitrationMeasurement context: Titration

Motor piston burette, univer.Motor piston burette, univer.


For uniform portioning and reproducible titrations - microprocessorcontrolled and with remote control.


▪ Display: LCD matrix (64 x 128 pixels)▪ Dispensing accuracy: +/- 0.15 %▪ Burette volume: 50 ml▪ Display accuracy: 0.01 ml▪ Glass cylinder: DURAN®▪ Line voltage: 230 VAC

Motor.piston burette,univer.50mlMotor.piston burette,univer.50ml36499-9336499-93

Cable Chem-Unit/Motor piston buretteCable Chem-Unit/Motor piston burette36501-0136501-01

Cable Basic-Unit/Motor piston buretteCable Basic-Unit/Motor piston burette36501-0336501-03





946

Universal fork-type light barrier to measure short and long shadow-ingperiods.

Benefits:Benefits:

An incremental wheel with a string groove which can be attachedto the fork of the light barrier allows to measure paths by countingthe ribs of the incremental wheel., Areas of application: track exper-iments, freefall, pendulum experiments, leaf springoscillations, dropcounters, volumetric measurements concerning the gas laws.


Dimensions: 40 x 40 mm, Supply voltage: 5 V

11207-2011207-20



Software Cobra3 pH and potentialSoftware Cobra3 pH and potential14509-6114509-61

Measurement context: ScalesMeasurement context: Scales

Set composed of Sartorius weighing scale andSet composed of Sartorius weighing scale andsoftwaresoftware

Function and ApplicationsFunction and ApplicationsSet composed of Sartorius CPA623S weighing scale, with built-inRS232 interface and the measure software for weighing scales. (Theseries-connection cables for the connecting of the weighing scale withthe PC are not included in the scope of delivery.) The Sartorius weigh-ing scales of the CP series offer many technical advantages, which en-sure the permanent operation of the weighing scales with maximummeasurement accuracy: Monolithic weighing system technology, ro-bust, precise, reliable - for years!

BenefitsBenefitsFour digital filter stages; with these the weighing scale can be adap-ted optimally to the environmental conditions at the installation loc-ation. Internal, motor-operated adjustment weight: Highest weighingscale precision by simple key press. Calibration and adjustment func-tion isoCAL: It guarantees the constant high precision of the weigh-ing scale through a regular, fully-automatic adjustment. Exception-al read-off, back-lit display with particularly large characters (16.5mm). Simple operation; all keys with perceptible pressing point; clearoperator panel. Functional wind protection; detachable side disks forprecise dosing. Perfect purity. Large scale pan: For more convenient

scaling. Integrated application programs: Counting, %-weighing, nettotal/recipe; animal weighing; switchover between 2 units

Equipment and technical dataEquipment and technical dataReadability: 1 mg, weighing range: 620 g, weighing scale pan diamet-er: 110 mm (stainless steel), Adjustable feet for level installation, in-tegrated bi-directional serial interface (RS232) for simple data trans-fer, casing dimensions (mm): 213 x 342 x 153, included power supplyunit included in the scope of delivery, mains power connectionvoltage: 230 V~, including measure software for weighing scales.

Set of Precision Balance Sartorius CPA 623S and measureSet of Precision Balance Sartorius CPA 623S and measuresoftware, 230 Vsoftware, 230 V49224-8849224-88


Balance adapter, 25/9 pinsBalance adapter, 25/9 pins14601-0114601-01

Converter USB - RS232, activeConverter USB - RS232, active14602-1014602-10



Measurement context: Dissolved oxygenMeasurement context: Dissolved oxygen

Cobra3 Measuring module,oxygenCobra3 Measuring module,oxygen


Plug-in module for oxygen measurements.



947

Benefits:Benefits:

▪ Simultaneous measurement of the oxygen concentration and thetemperature using the oxygen/ temperature probe no.12105.01.

▪ If there is also a pressure measuring module or a conductivitymeasuring module these can be connected to a free sensor portfor correcting the atmospheric pressure or the salt content.


▪ Measuring ranges O2-concentration 0.30 mg/l▪ O2-saturation 0.2%▪ Temperature 0.5 °C▪ Accuracy O2 2% of the measured value▪ Temperature automatic compensation (0.5 °C)▪ Atmospheric pressure correction: manual or automatic using the

pressure module▪ Salt content correction manual or automatic using the conductiv-

ity module▪ Electrode in air saturated calibration water or in the air.

Measuring module,oxygenMeasuring module,oxygen12105-0012105-00


Software Cobra3, OxygenSoftware Cobra3, Oxygen14505-6114505-61


Measurement context: NeurophysiologyMeasurement context: Neurophysiology

Biological amplifierBiological amplifier

With the aid of this biological amplifier a wide range of electro-physiological experiments can be carried out on human beings (ECG,EMG, EEG, EOG, ENG) and animals.

Biological amplifierBiological amplifier65961-9365961-93

Reflex hammer, triggeringReflex hammer, triggering65981-1065981-10

ECG electrodes, 3/pkgECG electrodes, 3/pkg65981-0165981-01

EMG electrodes, 3 offEMG electrodes, 3 off65981-0265981-02

Electrode commoning cableElectrode commoning cable65981-0365981-03

NeurosimulatorNeurosimulator


The neurosimulator simulates a generalised nerve cell with an apicaldendrite, a cell body and a nerve fibre.

Neuro-simulatorNeuro-simulator65963-0065963-00

Neuro-simulator, power supplyNeuro-simulator, power supply65963-9365963-93



Further informationFurther information

You will find further information on the possibilities of computer-assisted recording of neurophysiological data in the respectivechapters.


Modulconverter COBRA3-mea.unitModulconverter COBRA3-mea.unit12150-0412150-04





Data cable USB, plug type A/B, 1.8 mData cable USB, plug type A/B, 1.8 m14608-0014608-00

USB 2.0 4 Port Hub, incl. Power supplyUSB 2.0 4 Port Hub, incl. Power supply14612-0014612-00

Data cable, socket/socket, null modem, 9 poleData cable, socket/socket, null modem, 9 pole14603-0014603-00



948

6.4.16.4.1 Small to medium voltage power supply unitsSmall to medium voltage power supply units 9509506.4.26.4.2 Stabilised and regulated power supply unitsStabilised and regulated power supply units 9529526.4.36.4.3 High-voltage power supply unitsHigh-voltage power supply units 9559556.4.46.4.4 Signal generatorsSignal generators 956956

Power supply unitsPower supply units

6 Additional material6 Additional material6.4 Power supply units


949

Multitap transformer, 14 VAC/ 12 VDC, 5 AMultitap transformer, 14 VAC/ 12 VDC, 5 A


Power supply unit for low voltage supplies DC and AC voltages in2 Vsteps.


Galvanic isolation for all outputs, free-of-ground, Selection of voltageoutput via one side fixed 4 mm bridge plug, AC output: 2/4/6/8/10/12/14 V/5 A, DC output: 2/4/6/8/10/12/14 V/5 A, Max. current (shortterm): 10 A, Max. power: 80 VA, Fuses: 10 A , SUPPLY VOLTAGE: 230 VAC, DIMENSIONS (mm): 230 x 236 x 168

13533-9313533-93

Power supply variable 15 VAC/ 12 VDC/ 5 APower supply variable 15 VAC/ 12 VDC/ 5 A


Standard heavy duty power supply unit for low voltage.

Supplies unit for continuously adjustable DC and AC voltages & 2 fre-quently required fixed voltages


AC output: 0...15 V/5 A, DC output: 0...12 V/5 A, Max. current (shortterm): 10 A, Add. fixed voltages: 6 V AC/6 A12 V AC/6 A, Max. current(short term): 10 A, Max. power: 150 VA, Fuses: one 6 A and two 10 A,Supply voltage: 230 V AC, dimensions (mm): 230 x 236 x 168

13530-9313530-93

Variable transformer, 25 VAC/ 20 VDC, 12 AVariable transformer, 25 VAC/ 20 VDC, 12 A


Standard heavy duty power supply unit for low voltage.

Supplies unit for continuously adjustable DC and AC voltages & 2 fre-quently required fixed voltages


AC output: 0...25 V/12 A, DC output: 0...20 V/12 A, Max. current (shortterm): 13 A, Add. fixed voltages: 6 V AC/6 A12 V AC/6 A, Max. current(short term): 10 A, Max. power: 375 VA, Fuses: one 13 A and two 10A, supply voltage: 230 V AC, dimensions (mm): 230 x 236 x 234

13531-9313531-93

Variable transformer 25 VAC /20 VDC, with displayVariable transformer 25 VAC /20 VDC, with display


Standard heavy duty power supply unit for low voltage. Supplies con-tinously adjustable DC and AC voltages & 2 frequently requiredfixedvoltages.


AC output: 0...25 V/12 A, DC output: 0...20 V/12 A, Max. current (shortterm): 13 A, Add. fixed voltages: 6 V AC/6 A12 V AC/6 A, Max. current(short term): 10 A, Max. power: 375 VA, Fuses: one 13 A and two 10 A, Displays: 2 analogue meters for current voltage, supply voltage: 230V AC, dimensions (mm): 230 x 236 x 234

13532-9313532-93

6.4 Power supply units6.4 Power supply units6.4.1 Small to medium voltage power supply units


950

Variable transformer 36 VAC/ 30 VDC, 18 AVariable transformer 36 VAC/ 30 VDC, 18 A


Supplies a continuously adjustable DC and alternating current; withtwo ironvane instruments for voltage and current, switch between DCand alternating voltage; start-up current attenuation.


Galvanically isolated from the mains and non-grounded; protectedalso with an over current circuit-breaker. U, Imax (continuous), 0.36V~, 18 A, 0.30 V-, 18 A, U, Imax (short term) 30 V-/36 V~, 20 A, Pro-tection devices (secondary, automatic) 1 Circuit breaker, Power input750 VA, Mains voltage 230 V~/50.60 Hz, Housing dimensions (mm)370×235×234

13537-9313537-93

Transformer 3 phase 3-23/40V,3ATransformer 3 phase 3-23/40V,3A


Low-voltage three-phase transformer for star and delta circuits.


Switchable output voltages: 10/17 V~ (3-phase) and 23/40 V~ /max. 3A, Star point withstands full loading, 3 x 3-A automatic circuit break-ers, Floating outputs, 4-mm safety sockets, Mains switch and indicat-or lamp, Mains lead with Cekon three-phase earthed plug, Mains con-nection (three phase): 230/400 V, Impact-resistant, stackable plasticcase with carrying handle and stand, Dimensions (mm): 230 x 236 x168

13665-9613665-96

Variable transformer/ display 250/ 230 VAC/ DCVariable transformer/ display 250/ 230 VAC/ DC


Heavy duty variable transformer with particularly high load capacity.


Outputs galvanically isolated from the mains and non-grounded;overload and short circuit protected through overload safety switch(circuit breaker); protection class 2 (protective insulation, VDE 0550);startup current attenuation avoids circuit breaker tripping whenswitched on; DC and alternating current is continuously variable. 2iron vane instruments for exact display (effective value) of outputvoltage and current.-output: 0-250 V~/ 6 A; 4-mm-safetyplugs; par-allel 2 pole plug; 0.230 V-/ 6A; bridge rectifier-protection: throughoverload safetyswitch (circuit breaker)-start up current attenuation:start up sequence max. 3/min for mains voltages, voltages with B-or L- characteristic fuses-mains voltage: 230 V~/50.60 Hz-power con-sumption: 1500 VA-housing dimensions: 370×236×234 mm

13535-9313535-93

Lamp transformer, 220 V - 6-12V AC/ 90 VALamp transformer, 220 V - 6-12V AC/ 90 VA


Safety transformer,primary & secondary windings separated spatially& electrically.


Output voltage available on 4 mm plugsecurity sockets.Output: 6 V AC/ 5 APower supply voltage: 230 V ACCasing dimensions (mm):70 x 85 x60

07473-9307473-93

6.4 Power supply units6.4 Power supply units6.4.1 Small to medium voltage power supply units


951

Power supply, 5V/ 1A, +/-15 VPower supply, 5V/ 1A, +/-15 V


3 DC voltage outputs; useful for electronic experiments.


Output voltage ± 15 V/ 0.2 A; 5 V/ 1.0 A; 4-mm safety plugs; residualripple < 5 mV; power consumption approx. 35 VA; mains voltage 230V/ 50.60 Hz; housing dimensions 194 × 140 × 130 mm.

13502-9313502-93

Power supply 0...12 V DC / 6 V, 12 V AC, 230 VoltPower supply 0...12 V DC / 6 V, 12 V AC, 230 Volt


High quality power supply specially suitable for student experimentsin electricity and electronics as well as for demonstration.


Stabilised, Shortcircuit proof , Output voltage: 1...12 V DC 6 VAC, 12VA, Crated current: 2 A/ 5 A, Ripple: approx. 1 MV, Resistance: 1mOhm, Mains voltage: 230 V, Housing dimensions: 194 x 140 x 130mm

13505-9313505-93

Power supply, universalPower supply, universal


Versatile heavy duty power supply which can also be used as a con-stant current supply in schools, laboratories or workshops.


Direct current source: Stabilised, regulated output direct voltage, con-tinuously adjustable from 0...18 V, Adjustable current limit between0...5 A, LED display for constant current operationn, Permantelyshort-circuit proof &protected against exterior voltages, Alternativevoltage output:, Multitap transformer 2...15V, outputs galvanicallyseparated from mains grid, Full load capacity (5A), even if directcurrent is supplied simultaneously, Short-circuit protection throughovercurrent circuit breaker, All output voltages available at 4 mmsafety plug sockets.

13500-9313500-93

Power supply, universal, analog displayPower supply, universal, analog display


Same as 13500-93.


Additionally along with an analog display instrument with measuringranges of 0.18 V and 0-5 A and a commutating switch for voltage/cur-rent measurement.

13501-9313501-93

6.4 Power supply units6.4 Power supply units6.4.2 Stabilised and regulated power supply units


952

Power supply -2op-, 2x15V/2APower supply -2op-, 2x15V/2A


Specially suited for electronics experiments.


Output voltage 2x0...15Vnominal current 2A / 1Acurrent regulation0...2Ainternal resistance <= 10mOhmmains voltage 230V /50...60Hzpower consumption 170 VAhousing dimensions230x236x168mm

13520-9313520-93

Power supply 0-30VDC/20A,stabilPower supply 0-30VDC/20A,stabil


Heavy duty power supply with stabilised output voltage, low residualripple and with constant current operation.


Two moving coil instruments for simultaneous display of voltage andcurrent. LED display of constant voltage and current operation. Outputvoltage: 0...30 VDC Nominal current: 0.2...20 A Residual ripples: 30mV Required power: 900 V AInterior resistance: 40 mOhm Output isearth and mains-free, 4mm safety bushes. Power supply voltage: 230V Impact resistant, stackable plastic housing with carrying handle andfold-away stand. Dimensions: 370 x 236 x 234 mm

13536-9313536-93

Power supply, 0...600 VDCPower supply, 0...600 VDC


Power supply with 5 output voltages especially designed for experi-ments with tubes, fine beams and conducting the Frank-Hertz exper-iment.

BenefitsBenefits

Electronically stabilised DC voltages, short-circuit protected, galvanic-ally isolated from one another so that they can be possible to connec-ted in series, featuring LED current-limiting indicator and protectionagainst polarity reversal, AC voltage with automatic circuit breaker,All outputs are floating and isolated from the mains and use 4-mmsafety sockets.


Output 1: 0...12 V-/0.5 A, Stability: < 0.1 %, Residual ripple: < 5 mV,Output 2: 0...50 V-/50 mA, Stability: < 0.01 %, Residual ripple: < 5mV, Outputs 3/4: 300 V-/0...300 V-/50 mA, Stability: < 0.01 %, Resid-ual ripple: < 20 mV, Output 5: 6.3 V~/2 A, Power consumption: 100VA approx., Mains voltage: 230 V~, Impact-resistant, stackable plasticcase with carrying handle and stand, Dimensions (mm): 230 x 236 x168

13672-9313672-93

Power supply 12V AC/500 mAPower supply 12V AC/500 mA


Power supply for AC output voltage with output safety plug, to be usefor e.g. electrometer amplifier 13621-00.


Output: 12 V AC/500 mA Supply voltage: 230 V AC Dimensions [mm]: 70x 50 x 40Mass: 500 g

11074-9311074-93



953

Pow.suppl.3/4,5/6/7,5/9/12V 0.25APow.suppl.3/4,5/6/7,5/9/12V 0.25A


Plug-in power supply for powering small appliances.


6-position sliding switch for selecting various output voltages, Fixedoutput lead with end socket to accommodate 7 different adapterplugs with polarity labelling, Output: 3 / 4.5 / 6 / 7,5 / 9 / 12 V DC, 250mA, Mains voltage: 230 V~

11078-9311078-93

Power supply 5 VDC/2.4 A withDC-socket 2.1 mmPower supply 5 VDC/2.4 A withDC-socket 2.1 mm


Power supply 5 VDC/2.4 A withDC-socket


Power supply with plug and 1.3 m line cable and 2 m cable on sec-ondary output side., Output side: DC-socket 2.1 mm, Input voltage:100...260 V AC, Frequency: 50...60 Hz, Output voltage: 5 V DC, Outputcurrent: 2.4 A, Output plug:Outer diameter: 5 mm and Inner diamet-er: 2.1 mm, Dimensions (mm): 40 × 41 × 120 mm, Weight: 345 g

13900-9913900-99

Power supply 5 V DC/2.4 A with 4 mm plugsPower supply 5 V DC/2.4 A with 4 mm plugs


Short circuit proof plug-in powersupply unit.


With built-in 1.3 m connection cord and 4 mm plugs. Output: 5 V DC/ 2.4 AInput voltage: 110...230 V AC

11076-9911076-99

Power supply 12V / 2APower supply 12V / 2A


Small switching power supply with safetey class 2.

BenefitsBenefits

Stabilised output voltage and short circuit resistant., Including powersupply cable., Recommended for use with Cobra3.


Supply voltage: 100...230 V AC, Supply frequency: 50...60 Hz

12151-9912151-99



954

High voltage supply unit, 0-10 kVHigh voltage supply unit, 0-10 kV


For electrostatic experiments and for operation of spectral and gasdischarge tubes.


▪ It supplies 3 continuously variable DC voltages isolated from earthand ground.

▪ Two of the voltages are connected in series 0-5 kV DC = total of 0-10 kV DC.

▪ Selectable positive and negative polarity.▪ 3-figure LED display.▪ Outputs short-circuit proof.▪ Special safety sockets.▪ Modern plastic housing, impact resistant, easy to service, light

stackable with retractable carrying handle and stand.▪ Internal resistance: approx.5 MOhm.▪ Ripple: < 0.5%.▪ Supply voltage: 230 V.▪ Short circuit current: max. 3 mA.▪ Housing dimensions (mm): 230 x 236 x 168.

13670-9313670-93

Power supply, high voltage, 0-25 kVPower supply, high voltage, 0-25 kV


High voltage source, particularly suited for electrostatic experimentsrequiring a very high and exactly adjustable DC voltage.

BenefitsBenefits

▪ While operating gas discharge tubes, the drop voltage is to bechecked at the integrated digital display, which should not riseabove 5 kV for protection against radiation.

▪ Voltage stabilised through electronicregulation▪ Demonstrative voltage display on at three digit LED-display▪ Earthing socket allows the positive or the negative outputs to be

grounded▪ Gas discharge tubes can be operated without protective resistor

▪ Special safety sockets protect the user from unwanted spark dis-charges.


▪ Continuously adjustable DC voltage of 0.25 kV

13671-9313671-93

6.4 Power supply units6.4 Power supply units6.4.3 High-voltage power supply units


955

Power frequency generator, 10 Hz - 1 MHzPower frequency generator, 10 Hz - 1 MHz


Sinus and rectangular signal generator with signal and power outputfor optimal adaptation to different experimental circuits.

BenfitsBenfits

Large frequency range, frequencies can be continuously adjusted tofive decade areas, Output for sinus and regtangular signals, Poweroutput for sinus


Demonstative frequency display with 4 digit LED display, Supplement-ary headphone and loudspeaker connector jack

Signal output:

Max. output voltage Upp: approx. 6 V, Power: 1 W, Nominal final res-istor: 4 Ohm, Distortion factor: < 1% (typically < 0.2%)

Power output:

Max. output voltage Upp: approx. 18 V, Power: 10 W, Nominal finalresistor: 4 Ohm, Distortion factor: < 1% (typically < 0.3%)

Input:

Input voltage range: Up = 0...1V, Electric strength: Up < 30V, Inputresistance: 50 kOhm, Required power: max. 70 VA, Dimensions (mm):370 x 236 x 168

13650-9313650-93

Function generator, 0.1 Hz - 100 KHzFunction generator, 0.1 Hz - 100 KHz


Versatile sine wave, triangle wave and square wave signal generatorfor student experiments, practical work and demonstration. Shortcircuit proof output. Constant output amplitude over the completefrequency range. Strong power output enables direct connection to aloudspeaker


Frequency range: 0.1 Hz...100 kHz, Signal shape: Sine, triangle andsquare, Signal output: 20 V (open), 10 V Ra = 50 Ohm, Output power:approx. 0.25 W, Nominal terminal resistance: 50 Ohm, Distortionfactor (typical): < 1 %, Power consumption: max. 5 VA, Mains voltage:230 V/ 50...60 Hz, Housing dimensions (mm): 194 × 140 × 130

13652-9313652-93

Sine wave generator, 10 Hz - 20 KHzSine wave generator, 10 Hz - 20 KHz


For generation of sine wave signals for audiometry und acoustics.

BenefitsBenefits

Connection for head phone (jacksocket) and loud speaker (4 mm out-put sockets), 4-digit digital display, Cut-off switch for the headphone


3 Frequency ranges: 10...200 Hz100...2000 Hz1...20 kHz, Max. outputvoltage:0...6 V for 4 Ohm0...10 V for > 20 Ohm, Output power: 1 W for4 Ohm, Distortion factor (typical):< 1% for 1 kHz, Supply voltage:230V AC/50...60 Hz

65960-9365960-93

6.4 Power supply units6.4 Power supply units6.4.4 Signal generators


956

Digital Function Generator, USBDigital Function Generator, USB


Digital signal generator for use as a programmable voltage source in practical or demonstration experiments, particularly in the disciplines ofacoustics, electrical engineering and electronics

BenefitsBenefits


13654-9913654-99

▪ Can be used as universal stand-alone device or controlled via a USB interface (with a software package available as of 2011)▪ Universally applicable thanks to broad, continually adjustable frequency range▪ Usable as programmable voltage source via amplifier output▪ Intuitive, menu-driven operation using control knob and function buttons, with help capability▪ Illuminated monochrome graphic display for maximum visibility and readability▪ Simple setting of voltage and frequency ramps in stand-alone mode▪ Features V = f(f) output for easy reading of frequency in the form of a voltage - ideal for measuring circuit response to frequency ramps

using an oscilloscope▪ Low distortion and signal-to-noise ratio for brilliantly clear signals - ideal for acoustics/audio experiments

▪ Frequency range: 0.1Hz…1Mhz▪ Steps: 0.1Hz▪ Distortion factor: <0.5%▪ Signal forms: Sine, triangle, square, frequency ramp, voltage ramp▪ Amplifier output, short-circuit-proof, via BNC and 4-mm connectors:▪ Output voltage : 0 … 20 Vpp for Rout > 40 Ω▪ DC offset: ±10V (steps 5 mV)▪ Power output: 5W (for up to 1A) where Rout = 20 Ω▪ Headphone output via 3.5-mm jack socket:▪ Switch for selecting standard headphones or speakers▪ Output voltage: 0 … 1 Vpp for Rout = 400 Ω▪ Sync (trigger) output via BNC:▪ Output resistance: 50 Ω▪ Logic level: CMOS (5V)▪ V=f(f) output via BNC, short-circuit-proof:▪ For outputting frequency in the form of a proportional voltage 0 ... 10V (0...1MHz)▪ Sweep function for frequency ramp▪ Monochrome graphic display with continuous setting for background illumination: 128 x 64 pixels▪ USB 2.0 port▪ Settings via buttons and knob or software-assisted via USB▪ Power supply 100V~ - 240V~ at 50/60Hz▪ Impact-resistant plastic case with carrying handle▪ Dimensions (mm): 194 x 140 x 130



957



958

6.5.16.5.1 Hand-held measuring instruments - electricityHand-held measuring instruments - electricity 9609606.5.26.5.2 Demonstration measurement instruments - electricityDemonstration measurement instruments - electricity 9639636.5.36.5.3 Oscilloscopes, recordersOscilloscopes, recorders 9679676.5.46.5.4 Measuring amplifiersMeasuring amplifiers 9689686.5.56.5.5 Time measuring instruments, countersTime measuring instruments, counters 9709706.5.66.5.6 Meteorological instrumentsMeteorological instruments 9739736.5.76.5.7 Temperature measuring instruments, thermometersTemperature measuring instruments, thermometers 9749746.5.86.5.8 pH and conductivity measuring instrumentspH and conductivity measuring instruments 9819816.5.96.5.9 Oxygen, lux and pressure measuring instrumentsOxygen, lux and pressure measuring instruments 9879876.5.106.5.10 Radioactivity, sound level and gas measuring instrumentsRadioactivity, sound level and gas measuring instruments 9899896.5.116.5.11 Photometers, spectroscopes, polarimeters, refractometersPhotometers, spectroscopes, polarimeters, refractometers 9919916.5.126.5.12 General - measurement instrumentsGeneral - measurement instruments 994994

Measurement instrumentsMeasurement instruments

6 Additional material6 Additional material6.5 Measurement instruments


959

Digital multimeter for pupils, AmpSafe, electronicDigital multimeter for pupils, AmpSafe, electronicoverload protectionoverload protection


Multimeter for measurement of voltages, current and resistance.

BenefitsBenefits

Protected by an electronic relay this multimeter is completely overloadprotected., Ergonomically designed for pupils use, safe, with integ-rated shockabsorbing frame, Measurement of AC/DC voltage and cur-rent, resistance and contactless AC voltage detection via LED., AutoPower off.Built in pocket lamp (LED)., Overload protected by relay -neverreplace a fuse again!


Measurement ranges:, DC voltage: 0...600 V, AC voltage: 0...600 V~,DC current: 0...200 mA, AC current: 0...200 mA~, Resistance: 0...20MOhm, Supply voltage:2 × 1,5 V AAA batteries, Dimensions H × W × D(mm):120 × 55 × 40, Mass: 160 g, 4 mm safety sockets- 12 mm , 31/2-digit LCD with maximum display, value: 2000- Autorange , Data-Hold function, Compliant to safety rules: IEC-1010-1, CAT III 1000 V

Accessories includedAccessories included

2 × batteries AAA, 1 pair test probes, manual

07127-0007127-00

Digital multimeter 2010Digital multimeter 2010


3 ½ digit Steady performance digital-multimeter.

BenefitsBenefits

▪ provides an overload protection and the functions of measuringlike DCV,ACV, DCA, ACA, resistance, capacitance,frequency, diode,continuity test with buzzer and temperature;

▪ ideal for the education- and service-fields.


▪ 3 ½-dgt. LCD display, 28 mm, with backlight▪ manual range selection▪ low battery indicationh▪ FE-Test

▪ Peak-Hold▪ Auto power off▪ Safety: IEC-1010-1; CAT II 1000 V

Accessories includedAccessories included

▪ holster▪ carrying case▪ test leads▪ typ-K- thermocouple probe▪ battery and manual

07128-0007128-00

DMM with NiCr-Ni thermo coupleDMM with NiCr-Ni thermo couple


Hand-held instrument for measurement of voltages, currents, resist-ances,capacitance, frequency and temperature;

BenefitsBenefits

with continuity check function and diode test, auto power off,displayillumination and measurement value hold function.


Overload protection by diodes and fine fuses for 0.2 A and 20 A.,Plastic housing with rubber frame and 4 mm safety sockets., Thermo-couple socket type K., 3 1/2-digit LC-display: 38 mm, Voltage:0...0.2/2/20/200/1000 V DC0...2/20/200/700 V AC, Current AC/DC: 0...0.2/2/20/200 mA0...20 A, Resistance: 0...200 Ohm0...2/20/200 kOhm/2/20MOhm, Temperature: -20...760°C, Frequency: 0...20 kHz, Impedance:10 MOhm, Dimensions (mm): 92 × 195 × 38, Mass: 380 g, Includingtest leads, 9 V batteryblock, NiCr-Ni thermocouple type K and manual.

07122-0007122-00

DMM, auto range, NiCr-Ni thermocoupleDMM, auto range, NiCr-Ni thermocouple


6.5 Measurement instruments6.5 Measurement instruments6.5.1 Hand-held measuring instruments - electricity


960

Hand-held instrument for measurement of voltages, currents, resist-ances, capacitance, frequency and temperature with autorange.

BenefitsBenefits

With continuity check function and diode test, auto power off, displayillumination,°C/°F selection, battery tester, high current adapter andmeasurement value hold function. Overload protection by diodes andfine fuses for 0.4 A and 20 A.


Plastic housing with rubber frame and 4 mm safety sockets. Thermocouple socket type K.3 3/4-digit LC-display: 38 mm Voltage:0...0.4/4/40/400/1000 V DC0...4/40/400/700 V AC Current AC/DC: 0...0.4/4/40/400 mA0...4/20 A With high current adaptor:0...400 A AC/DC Resist-ance: 0...400 Ohm0...4/40/400 kOhm/4/40 MOhm Capacitance:0...40/400 nF/4/40/100 µF Temperature: -20...760°C Frequency:0...5/50/500Hz/5/50/500/5000 kHz Impedance: 10 MOhm Dimensions (mm): 92 ×195 × 38 Mass: 380 g Including test leads, 9 V battery block, NiCr-Nithermo couple type K and manual.

07123-0007123-00

DMM with USB interface, auto rangeDMM with USB interface, auto range


New constructed and GS-approved high class digital multimeter with4 1/2digit multifunciton display (max.22000), 46-segment analoguebargraph and integrated USB-interface for easy connection with com-puter to realize macro recording, monitoring and capture of transientdyncamic data. Full input protection, backlight, and easy operatingfor choosing several measurement functions with the help of the clearview push button section. The True RMS AC voltage and current read-ings are other most important features of this new constructed mul-timeter.


21 mm, 4 1/2-digit LCD-display,backlight and 46-segement bargraph;max.display: 22000True RMS measurement for ACV and ACAUSB 2.0-interface to transmit measuringdata to the PCDiode-, continuity-

testPeak detectDATA-, MAX-, MIN-HOLDRelative functionAuto andmanual range selectionAuto power off and low batteryindica-tionSaftey: EN 61010-1/EK-1, CAT III 1000V/CAT IV 600VAccessories:test leads, carrying case,USB-interface cable, software forWindows98/2000/NTXP/VISTA/Win7 32bit/64bit,batteries and manualDCV 220 mV/2,2/22/220/1000 V; 0,1 mV; +/- 0,05 % + 3 dgt.ACV 220 mV/2,2/22/220/700 V; 0,1 mV; +/0,8 % + 4 dgt. / Frequency range: 40... 400HzDCA 220/2200 µA/22/220 mA/10 A; 0,01 µA;+/- 0,8 % + 4 dgt.ACA220/2200 µA/22/220 mA/10 A; 0,01 µA;+/- 1,0 % + 3 dgt. / Frequencyrange:40 ... 400 HzOhm 200 Ohm/2,2/22/220 kOhm/2,2/22/220MOhm;0,01 Ohm; +/- 0,8 % + 2 dgt.Cap. 22/220nF/2,2/22/220µF/2,2/22/220nF;1nF; +/- 2,5 % + 3 dgt.Freq. 22/220 Hz/2,2/22/220 kHz; 0,01Hz;+/- 0,2 % + 3 dgt.Operating voltage 4 x 1,5 V (AA) Batt. Dimensions(WxHxD) 102 x 205 x 58 mm. Weight 390 g

07121-0107121-01

Voltmeter 5/ 15 V DCVoltmeter 5/ 15 V DC

Voltmeter 5/15 V DC, moving coil instrument,. Two ranges: 0 - 5 V DC,0 - 15 V DC, class: 1.5. Scale length: 78 mm.

Voltmeter 5/15 V DCVoltmeter 5/15 V DC07037-0007037-00

Ammeter 1/5 A DCAmmeter 1/5 A DC07038-0007038-00

Voltmeter,0.3-300VDC,10-300VAC /Voltmeter,0.3-300VDC,10-300VAC /07035-0007035-00

Ammeter 1mA...3 AAmmeter 1mA...3 A07036-0007036-00

Galvanometer -3.5...0...3.5mil-AGalvanometer -3.5...0...3.5mil-A07039-0007039-00

Multi-range meter, centre zeroMulti-range meter, centre zero07027-0107027-01

Multi-range meter/overl.prot.BMulti-range meter/overl.prot.B07026-0007026-00

Protect.sleeve f.meter, h 55mmProtect.sleeve f.meter, h 55mm07026-0107026-01

Multi-range meter w.overl.prot.Multi-range meter w.overl.prot.07021-0107021-01



961

Multi-range meter, analogueMulti-range meter, analogue


Moving coil instrument for measuring direct or alternating voltageor current, and also for measuring resistance. Low resistance currentmeasurement ranges through current converter.


▪ Overload protected by fuses▪ Voltage: 100 mV...300 V~/ 10 V...300 V~▪ Current: 50 µA...3 A~/ 3 mA...10 A~▪ Resistance: 1 Ohm...500 kOhm▪ Internal resistance: 20/ 6.7 kOhm/V~ (DC/ AC)▪ Ohm/V~ Accuracy class: 2.5▪ Overload protection: with fuses and diodes▪ Dimensions: 100 × 140 × 35 mm

Multi-range meter, analogueMulti-range meter, analogue07028-0107028-01

Multirange meter,zero left/centreMultirange meter,zero left/centre07041-0007041-00



962

Multimeter ADM1Multimeter ADM1


Switchable, overload protected moving coil instrument for measuringdirect and alternating voltage and current. Passive instrument.

BenefitsBenefits

▪ Independent of a mains, battery or accumulator supply of power.▪ Separate selection measuring range and type of current for clear

settings.▪ Reading of measured values made easy by automatic call-up of a

scale with 30 or 100 divisions when the measuring range is se-lected.

▪ Scale is clearly visible from a distance, scale length 200 mm, digitheight 20 mm.

▪ Extensive overload protection.▪ System Moving coil measuring system (core magnet).

Equipement and technical dataEquipement and technical data

▪ Accuracy Class 1.5 for DC, Class 2.5 for AC.▪ Frequency range 10 Hz...10 kHz.▪ Overload Voltage measuring ranges min. 230 V.▪ Current measuring ranges: 1 A in measuring ranges to 0.3 A, 15 A

in measuring ranges to 10 A.▪ Dimensions (mm): 320 × 130 × 385▪ Weight approx. 5 kg

Multimeter ADM1, demo., analogMultimeter ADM1, demo., analog13810-0013810-00

Current transformer/Clamp Ammeter adaptorCurrent transformer/Clamp Ammeter adaptor07091-1007091-10

Fuse f 10 G, pkg of 10Fuse f 10 G, pkg of 1007503-0107503-01

Fuse F 0.63H, pkg. of 10Fuse F 0.63H, pkg. of 1007503-6007503-60

Battery cell 1.5 V, Mono, R20/UM-1, type DBattery cell 1.5 V, Mono, R20/UM-1, type D07922-1007922-10




Probe 10/1, cable length 1500 mmProbe 10/1, cable length 1500 mm17044-0017044-00

High voltage probe 40 kV, 1000:1High voltage probe 40 kV, 1000:107029-2007029-20

Multimeter ADM2, demo., analoqueMultimeter ADM2, demo., analoque


Electronic analogue multimeter for measuring direct and alternatingvoltage and current, and for measuring resistance.

BenefitsBenefits

▪ Eight demonstrative scales with a total of 66 measuring ranges.▪ Measures direct or alternating current from 1 mikroA to 10 A.▪ Measures direct or alternating voltage from 1 mV to 10 kV.▪ Measures resistance up to 1 MOhm.▪ Scale with zero in the middle with automatic middle positioning

of pointer.▪ Automatic switch-off of battery after approx. 50 min.▪ Operatable and readable also from the back. Extensive overload

protection in all measuring ranges even when line voltage isfalsely applied.

▪ Eliminates the need for fuses and cutouts.


▪ Display system: Moving coil measuring system (core magnet)▪ Control display on the back▪ 3 Digit LCD display with floating decimal point and sign▪ Accuracy: Class 1.5▪ Rectifier principle: Effective value (True RMS-to-DC Converter)▪ Frequency range: 15 Hz...20 kHz▪ Signal shape: Arbitrary▪ Power supply: 3 × 1.5 V▪ Battery lifetime: 400 hours of operation▪ Casing dimensions (mm): 320 × 190 × 385▪ Weight: 6.4 kg

13820-0013820-00

Moving coil instrumentMoving coil instrument


Moving coil instrument for interchangeable range multipliers.


▪ Plastic case with 4 mm sockets▪ Case dim. approx. 260 x 105 x 290mm▪ Overload protection by builtin protective devices

6.5 Measurement instruments6.5 Measurement instruments6.5.2 Demonstration measurement instruments - electricity


963

▪ Zero correction and setting of the pointer to scale center by set-ting wheel on the underside

▪ Scale length 187 mm▪ readable from both rear- and front-side.

11100-0011100-00

Accessories for moving coil instrumentAccessories for moving coil instrument

Range multiplier + 300 deg.CRange multiplier + 300 deg.C11106-0511106-05

Range multiplier, 1 V DCRange multiplier, 1 V DC11104-3111104-31

Range multiplier, 1-0-1 mA DCRange multiplier, 1-0-1 mA DC11102-7111102-71

Range multiplier, 10 mA DCRange multiplier, 10 mA DC11102-1111102-11

Range multiplier, 10 V ACRange multiplier, 10 V AC11105-4111105-41



Range multiplier, 100 mV DCRange multiplier, 100 mV DC11104-2111104-21

Range multiplier, 100 micro-A DCRange multiplier, 100 micro-A DC11102-8111102-81


[deleted] Range multiplier, 3 V AC[deleted] Range multiplier, 3 V AC11105-3311105-33






Range multiplier,30 mic.V-10 mVRange multiplier,30 mic.V-10 mV11110-0111110-01

Range multiplier, 300 mV DCRange multiplier, 300 mV DC11104-2311104-23



Storage rack f. range multipliersStorage rack f. range multipliers11101-0111101-01


Instrument fuse F 2 H, pkg.of 10Instrument fuse F 2 H, pkg.of 1007503-0207503-02

Electrostatic voltmeter, 7.5kVElectrostatic voltmeter, 7.5kV


For wattless measurement of direct and alternating voltages in therange1...7.5 kV, or 3...26 kV and 3...18- kV~ (eff.)

BenefitsBenefits

▪ For measuring charge in combination with a Faraday cup.▪ Electrostatic measuring system, shielded against exterior elec-

tricfields.


▪ Practically load-free measurements from 1 kV to 26 kV, becauseof the high input resistance > 1014.

▪ Insulation resistance of the ceramic high voltage socket > 1014 .▪ The Plexiglas cover on the back allows a view of the system▪ Integrated sphere spark gap▪ The measured value can also be read from the back

11150-0011150-00

Electrostatic voltmeter, 26 kVElectrostatic voltmeter, 26 kV


For powerless measurement of direct and alternating voltages in therange of 1...7.5 kV AC/ DC or 3...26 kV DC and 3...18 kV AC (eff.).To measure charges in combination with a Faraday cup. Accuracyclass: 1.5. Limit frequency: 100 kHz...1 MHz (for 1...3.5 kV). Responsevoltage of sphere gap:12 kV (crest value). Capacity: approx. 30 pF.Length of scale: 187 mm. Zero adjustment: with knurled screw. Di-mensions: 260 x 100 x 350 mm.

Electrostatic voltmeter, 26 kVElectrostatic voltmeter, 26 kV11151-0011151-00



964

Connecting cord, 30 kV, 1000 mmConnecting cord, 30 kV, 1000 mm07367-0007367-00

Connecting cord, 30 kV, 500 mmConnecting cord, 30 kV, 500 mm07366-0007366-00

Faraday pailFaraday pail06231-0006231-00

Work and power meterWork and power meter


For AC and DC circuits


Two 4-digit, 20 mm LED-displays, Display 1 for real and apparentpower,current, voltage, phase difference and freqency, Display 2 forenergy and time, Selector for serial display of all units, LED-Status-display and automactic range selection, Power: max. 2400 W, Res-olution: max. 0.001 W, Voltage: 0-30V AC/DC, 0-240, Veff- Current:0...10A AC/DC, Phasen difference: 0...+/- 90 degree, Frequency:0...10000 Hz, Energy: max. 9999 Wh or Ws, Resolution: max. 0.001Ws, Analog output for all units of disp. 1, Mains: 110/230V, 50/60Hz,Shock-resistant plastic housing with carry handle and base

13715-9313715-93

Teslameter, digitalTeslameter, digital


For the measurement of magnetic DC and AC fields.


▪ Teslameter with 3 1/2 digit LED display, 20 mm high▪ 3 measuring ranges: 20 - 200 - 1000 mT fsd▪ Sensitivity: 10 µT▪ For alternating and direct fields▪ Calibrated analogue output

Teslameter, digitalTeslameter, digital13610-9313610-93



Demomultimeter, p, pH, T, U, I, R, f, RS232, 230 VDemomultimeter, p, pH, T, U, I, R, f, RS232, 230 V


Modern multi-purpose device for measuring of voltage, current, res-istance, frequency, temperature, pressure and pH.

BenefitsBenefits

▪ 45 mm LED-display▪ LED-matrix for display of the units▪ Serial port for connecting PC▪ Auto-range function


Voltage:

▪ 4 ranges: 0 mV - 500V AC/ DC▪ Resolution: 0.1 mV/ 10 mV/ 100 mV/ 1 V

Current:

▪ 3 ranges: 0 mA - 10 A▪ Resolution: 0.1 mA/ 10 mA/ 100 mA

Resistance:

▪ 5 ranges: 0 Ohm - 10 MOhm▪ Resolution (Ohm): 1/ 10/ 100/ 1000 /100.000

Frequency:

▪ 4 ranges: 1 Hz - 100 kHz▪ Resolution: 1 Hz/ 10 Hz/ 100 Hz

Temperature:

▪ 2 ranges 200°C - 1370°C▪ Resolution: 0.1°C/1°C

pH- Resolution:

▪ 1 range: 0 - 14 pH▪ Resolution: 0.01

pH- Pressure:

▪ 2 ranges: 0 - 7000 hPa▪ Resolution: 0.1 hPa/ 1 hPa

Dimensions (mm): 288 x 165 x 235

Demomultimeter p, pH, T, U, I, R; RS 232, 230 VDemomultimeter p, pH, T, U, I, R; RS 232, 230 V13721-9313721-93






pH-electrode,plastic body,gel,BNCpH-electrode,plastic body,gel,BNC46266-1046266-10





965


Software DemomultimeterSoftware Demomultimeter14409-6114409-61

Pressure sensor, absolute press.Pressure sensor, absolute press.07136-0107136-01


Pressure sensor 2, 500-7000 hPaPressure sensor 2, 500-7000 hPa07136-0207136-02

Large-scale display, digital, RS-232 portLarge-scale display, digital, RS-232 port


Special four-digit large-format display for presenting the measure-ment data supplied by the new Cobra4 Mobile-Link with Cobra4Display-Connect, the Cobra3 Com-Unit, the PHYWE hand-held measur-ing instruments and Sartorius or Scaltec balances equipped with datainterfaces.

BenefitsBenefits

Fit for the future: The large-format display can be updated and ad-apted to other measuring instruments which are not available on themarket yet.


▪ 4-digit digital display with a digit height of 56 mm▪ Matrix display (15 × 14) pixels for presenting the units▪ Serial interface (RS 232) for connecting a measuring instrument.▪ Second connector for the simultaneous presentation of another

measuring quantity.▪ Threaded connectors for connecting support stands or a clamp (to

attach the display to various experimental setups).

07157-9307157-93

Electric field meterElectric field meter


For measurement of static electric fields without losses and withthe correct sign as well as for electrostatic measurement of voltagesin those cases in which normal static voltmeters are not sensitiveenough.


▪ Measuring ranges: 1/ 10/ 100 kV/m, 10/ 100/ 1000 V▪ Steel sheet casing on a rod▪ Push-button key for measuring range selection▪ Rotating knob for electric zero adjustment▪ two pair of 4 mm sockets to connect power supply and measuring

instrument▪ Gold plated measuring head with gold plated winged wheel▪ Voltage measuring attachment gold plated with two 4 mm sockets

to connect voltage which is to be measured.▪ Power supply: 14...18 VDC (e.g. from universal power supply

13500-93).▪ Data output (9-pin Sub-D jack) for connection to the serial inter-

face (RS 232) of a computer via the special cable supplied.▪ Dimensions (mm): 70 x 70 x 150▪ Accessory (not included): Software Electric Field Meter

(14406-61)

Electric field meterElectric field meter11500-1011500-10

Meas.slit x10 f.elec.field meterMeas.slit x10 f.elec.field meter11500-0311500-03

Software f. electrofieldmeterSoftware f. electrofieldmeter14406-6114406-61



966

Oscilloscope, 50 MHz, 2 channelsOscilloscope, 50 MHz, 2 channels


Oscilloscope for the measurement & storage off a st periodical & nonperiodical voltage signals.


Oparation modes:Ch1,Ch2;altern.,chop,xy,sum,diff.invert.Ch2.

Vertic. deflect.(analog/digital)

Band width 2xDC...50 MHz, Deflect.(1mV-20V)/cm,14-calibr.Positions& variable.

Horizont. deflect.(analog/digit.)

Time base (50ns-0,5s)/cm,22-calibr.positions & variable,delay,x-ex-tension & hold-off-time., Trigger (analog/digit-al)Ch1,Ch2;altern.,mains or external,, with LED-display., Coupling AC-DC-HF-LF

Digital storage:

Refresh, Roll,Single, XY,Envelope, Average, Random-Sampl., Dot-joint-function, Post-pre-trigger Storage/CH 2kx8 Bit.

Handling/Display :

Auto Set, , Save & Recall, Readout, Frequ.measurem., Componenttester, Cursor measurement(analog/digit.) Delta(U,t,1/t),Gain,Rise,Time,Ratio X&Y,, Phase angle (only digit.): Pulse count,search, Peak-Peak, avm, rms., Scaled Screen (8x10)cm, Accelarationvoltage 2 kV, Connect. (100-240)V;50/60Hz;42 W, Mass 6 kg, Dimen-sions (285 x 125 x 380) mm

11458-9911458-99

Oscilloscope, 150 MHz, 2 channels, RS-232Oscilloscope, 150 MHz, 2 channels, RS-232

11452-9911452-99

Oscilloscope, 30 MHz, 2 channelsOscilloscope, 30 MHz, 2 channels


Oscilloscope in modern design and technology, especially destined foreducation and laboratory.

BenefitsBenefits

Jitterfree, superb trigger sensitivity, Internal compensation circuit forlowdrift, With calibrator output for testing the transmission qualityfrom probe to monitor


Band width (-3dB): DC 10 Hz to 30 MHz, Modes: CH 1/2, ADD, DUAL,CHOP, ALT, Input impedance: 1 MOhm // 30 pF, Input voltage: 400 V DCor ACpp, Accuracy: ± 3 % (± 5 % at x 5 MAG), Mains voltage: 115/230V AC, 50/60 Hz

manual, , spare fuse,, Powercord,, 2 probes

11459-9511459-95

25 MHz Digital storage oscilloscope with colour display, 2 x BNC25 MHz Digital storage oscilloscope with colour display, 2 x BNCcables l =75 cm incl.cables l =75 cm incl.

11456-9911456-99


High voltage probe 40 kV, 1000:1High voltage probe 40 kV, 1000:107029-2007029-20

6.5 Measurement instruments6.5 Measurement instruments6.5.3 Oscilloscopes, recorders


967

Universal measuring amplifierUniversal measuring amplifier


Universal measuring amplifier for amplification of AC and DC voltages.Suitable for practical exercises.


input impedance:

electrometer: > 10 (13) Ohm

low drift: 10 kOhm

input voltage: -10 to + 10 V, output voltage: -10 to + 10 V

frequency ranges:

V=1 0...100 kHz, V=10 0... 75 kHz, V=10(2) 0... 10 kHz, V=10(3) 0... 6kHz, V=10(4) 0...2.5 kHz, V=10(5) 0... 2 kHz, mains voltage: 230 V AC,dimensions: 194 x 140 x 126 mm

13626-9313626-93

DC measuring amplifierDC measuring amplifier


Versatile measuring amplifier for measurement of very small directcurrents, electrical charges and for quasi-static measurements of DCvoltages.


8 current measurement ranges with very low voltage drop, 6 voltagemeasurement ranges with extremely high input resistance, 5 chargemeasurement ranges, Analogue output for connection of demonstra-tion measurement instruments/ pen recorders, button for reversingoutput voltage, Selection of measurement modes using push-button,Diode indicators for active measurement range, Zero point adjust-ment, discharge button, range selection buttons

Current measurement

Measurement range: 0.01 nA...0.1 mA in 8 decade ranges, Voltagedrop: 1 mV

Voltage measurement

Measurement range: 0.1 mV...10 V in 6 decade ranges, Input resist-ance: 10 gOhm

Charge measurement

Measurement range: 0.1 nAs...0.001 mAs in 5 decade ranges, Accur-acy: 3%, Input: BNC socket, Overload protection: 250 V, Power sup-ply: 230 V, Housing dimensions: 230 x 236 x 168 mm, Modern plastichousing, impact resistant, with retractable carrying handle and stand

13620-9313620-93

LF amplifier, 220 VLF amplifier, 220 V

Function andFunction and ApplicationsApplications

For amplifying direct and alternating voltage up to 100 kHz. Can beused for induction experiments and for examining acoustic and elec-tromagnetic fields. Signal output for the amplified measured signal.

BenefitsBenefits

Effective value output for display of the effective value of the signaloutput voltage. , Power amplifier 12.5 W for weak acoustic frequencysignals to control low resistance loudspeakers., For signals from fre-quency generators or computer interfaces., Amplification is continu-ously adjustable.


Ampl. factor: 0.1...10000, continuously adjustable, Input impedance:50 kOhm/ AC, 100 kOhm/ D, Input voltage: -10 V...+10 V, Frequencyrange: 3.5 Hz....200 kHz,, Accuracy of amplification factor: < 5% amp-lification factor, Output voltage: 10 Veff, Nominal final res.: 8 Ohmsignal output, 1 kOhm RMS output, Load capacity: Permanently short-circuit proof, Offset: Voltage compensation with potentiometer, Mainssupply 230 V AC/ 50...60 Hz, Casing dimensions (mm): 230 x 236 x 168

13625-9313625-93

Difference amplifierDifference amplifier


6.5 Measurement instruments6.5 Measurement instruments6.5.4 Measuring amplifiers


968

For the simultaneous potential-free measurement of two voltageswhen connected to the inputs of a two channel oscilloscope.

BenefitsBenefits

The high resistance difference inputs can be connected to any point ofa circuit, without influencing the electrical behaviour of the circuit. ,Allows demonstration of the phase shift between voltage and currentin alternating current circuits., Enables characteristics to be presen-ted in the xy operation mode of an oscilloscope., Input voltages canbe added.


amplification 1 ± 3%, frequency range for UE 20 Vss 0. 15 kHz, forUE 6 Vss 0.70 kHz, for UE 2 Vss 0.100 kHz, inputs A and B: connec-tion 4-mm-pair of sockets, impedance 1 M_/10 pF, overload capa-city mains voltage proof, outputs A and B: connection BNC-sockets; ,internal resistance 100 Ohm, external resistance 10 kOhm, overloadcapacity short-circuit proof, mains supply 230 V, 50.60Hz, casing di-mensions (mm) 190×110×60

11444-9311444-93



Operational amplifier with high resistance input for quasi-staticvoltage measurement respectively charge measurement in fail-safe-plastic housing.

BenefitsBenefits

Suited for experiments with electrostaticse.g. charge measurement,capacity measurement of sphere-capacitor, measurement of directvoltages,quasistatic measurements and measurement of small cur-rents.


Power supply via 4 mm sockets or wall power supply with hole sock-et., Operation temperature: 5...40°C, Relative humidity: < 80%, Gain/amplification: 1.0, Input resistance: > 10000 GOhm, Input current: <0.5 pA, Input capacitance: < 50 pF, Input voltage:, Amplifier (socket1): ± 10 V-, 2. input (socket 2): 1 kV , Power supply: 12 V AC/25 mAhole socket: 2.1/5.5 mm or, External power source: 12 V AC25 mA 4mm sockets, or: Cobra3 interface: ± 15 V RS232 socket, Output voltage:± 10 V, Output current: 1 mA, Output resistance: < 500 Ohm, Dimen-sions H × W × D (mm):65 × 113 × 35, Mass: 150 g

13621-0013621-00

Power supply 12V AC/500 mAPower supply 12V AC/500 mA


Power supply for AC output voltage with output safety plug, to be usefor e.g. electrometer amplifier 13621-00.


Output: 12 V AC/500 mA Supply voltage: 230 V AC Dimensions [mm]: 70x 50 x 40Mass: 500 g

11074-9311074-93

6.5 Measurement instruments6.5 Measurement instruments6.5.4 Measuring amplifiers


969

Timer 2-1Timer 2-1


The chronometer Timer 2-1 has a 4-digit digital display and has beenspecially designed for use in student experiments and demonstrativeteacher experiments.

BenefitsBenefits

The starting and stopping of the built-in timer piece, as well ascounting, is effected by the opening and closing of electrical circuits,across light barriers or other TTL signal sources., Many and various ex-perimental requirements can be fullfilled with the 4 different operat-ing modes that the Timer 2-1 makes available for track experiments,for the measurement of the time, of revolution, of a turning move-ment, for the direct measurement of the period of a full swing, of amechanical pendulum and for the counting of events

Equipment and technicla data (typical for 25°C)Equipment and technicla data (typical for 25°C)

Operating temperature range: 5...40°C, Relative humidity: < 80%

Control: (Start/ Stop) by electricalcircuits (contact closure/ contactopening or level ACC to TTL-Norm), Digital display: 4-Digit LED display,digit height 19 mm, Time measurement: Measuring range0.000...9.999 s, resolution 1 ms, Pulse counting:Measurement range0...9999 pulses, Limiting frequency 1 kHz,, shading period > 500 µs,Operating voltage: (Stabilized) 5 V ± 5 %, (suitable power supply 5 VDC/2.4 A, 13900-99, standardly supplied), Power consumption: 1.8 VA,Supply connector: connecting socket for hollow plug, diam. 2.1 mm atthe back of the instrument, 5 VDC/ 350 mA, Overvoltage and reversepolarity protection: up to max. 12 V, Housing dimensions (mm): 190 ×130 × 140 (W, H, D), Weight: approx. 920 g

13607-9913607-99

Universal CounterUniversal Counter


The universal counter is used for measuring time, frequency, pulserates, pulse counting, periodic times, speeds and velocities.

BenefitsBenefits

▪ The device has all the qualities that are expected of a modernuniversal counter and is also equipped with a number of technic-

al specifics of how it specifically arise from the requirements ofscience teaching practice.

▪ For the scientifically correct representation of each measurementis shown in principle with the associated unit. With the overflowof the display is automatically switched into the next area.

▪ Before the measurement starts it can be manually adjusted to amaximum of 6 decades defined range, eg to suppress is not phys-ically meaningful digits on the display.

▪ A special jack for direct connection of a GM counter tube is avail-able for radioactivity experiments. The required voltage can bechanged manually to determine the characteristics of a countertubes to.

▪ The stopwatch function can be entered by means of electricalcontacts, sensors, or manually in the various types of triggers forthe precise starting and stopping for time measurement.

▪ The measured values are represented by six red 20mm high-contrast 7-segment displays. An additional three-digit display isused to display the unit (ms, s, Hz, kHz, MHz, I / s, RPM, Imp, V, m/ s).

▪ The various operating states are indicated by LEDs.▪ Range switching in all modes manually (before measurement) and

automatically when an overflow.


▪ Operating temperature range 5th .. 40 ° C▪ Relative humidity <80%▪ Digital display:▪ Measurement reading LED 6-digit, 7-segment, 20 mm▪ Units LED 3-digit, 5x7 dot matrix▪ Units ms, s, Hz, kHz, MHz, I / s, RPM, Imp, V, m / s▪ Signal Input:▪ Signal bandwidth 0.1 Hz .. 10 MHz▪ Counter Tube Input voltage 150 V. .. 660 V (factory setting: 500V)

with manual adjustment▪ Photoelectric output for power supply of 5 V sat. max 1 A▪ Stopwatch 0.000 ... 99,999.9 s, resolution 1 ms▪ Timer 0.000 ms ... 3999.99 s, resolution1µs▪ Velocity 0.000 m/s...9999, 9 m / s, resolution 0.001 m / s▪ Period measurement 0.000 ms ... 99.9999 s, resolution 1µs▪ Frequency measurement 0.00 Hz .. 9.99999 MHz, resolution 10

mHz▪ Speed measurement 6. .. 99,999 RPM, 1 RPM resolution▪ Pulse counting 0. .. 999,999 Imp▪ Pulse rate measurement 0.0 ... 99,999.9 I / s▪ Mains supply: Mains voltage 110 .. 240 V, 50/60 Hz, 20 VA▪ Housing dimensions (W, H, D) 370 x 168 x 236 (mm)▪ Mass of 2.9 kilograms

Universal CounterUniversal Counter13601-9913601-99

Software Universal counterSoftware Universal counter14412-6114412-61

Timer 4-4 with USB-interfaceTimer 4-4 with USB-interface


6.5 Measurement instruments6.5 Measurement instruments6.5.5 Time measuring instruments, counters


970

Measures up to 4 times simultaneously. Multiple time measuring in-strument for a variety of applications in teaching, wherever times areto be accurately measured. The timer unit has four 4 digit displays.The starting and stopping of the four built-in independent timers isactuated by the opening or closing of electrical circuits, or by meansof light barriers or other TTL signal sources (e.g. a microphone).

BenefitsBenefits

The 6 different operating modes allow the timer unit to be adjustedto suit almost any experimental requirement. Three different operat-ing modes are suitable for track experiments (distance-time law forfour tracks, measurement of speed at four positions, principles of col-lisions), and in each case all four displays are utilized. Two furtheroperating modes allow, for example, the measurement of the orbit-ing time of a rotary movement and the direct measurement of theduration of a complete swing of a mechanical pendulum. If required,two of the 4-digit displays can be combined to give an 8-digit display(0000.0000 to 9999.9999).


▪ Four 4-digit LED displays▪ Digit height: 9 mm▪ Number of timers: 4▪ Measuring range: 0.000...9.999 s or 0000.0000...9999.9999 s▪ Resolution: 1 ms or 0.1 ms▪ Control (start/ stop): By electrical circuits (contact closure / con-

tact opening or level according to TTL norm)▪ Integrated power supplies for lightbarriers 4 × 5 V, 1.5 A▪ Mains supply: 100...240 V~, 50...60 Hz▪ Power requirement: 18 VA▪ Dimensions (mm): 184 × 140 × 130▪ USB - interface for PC-based experiments

Timer 4-4 with USB-interfaceTimer 4-4 with USB-interface13604-9913604-99

Software Timer 4-4Software Timer 4-414413-6114413-61

Digital counter, 6-decadeDigital counter, 6-decade


Microprocessor controlled universal counter for experiments in mech-anics, acoustics, electricityelectronics and radioactivity.


Operating modes:

Time: Stopwatch, additive & intermediate recording., 2 timers with2time measurement possibiliteseach, one of which is storable., 8triggering possibilites., Meas.range: 1000 s & 10000 s, Frequency:3 ranges 10kHz to10MegaHz, Rate: Measuring range:10000 Imp/s, 8triggering alternatives:1 s to100 s, Period: 0.1 s to 10 s, RPM: 100000RPM/min, gate times: 1 s / 10 s, Impulse: max.100000Imp , selectabledisplay of impulses, meas. time,or impulse rate, Inputs:4 mm pair ofsockets for frequency, start/stop & stop for timer 1 & timer 2., Out-puts: BNC for counting tubes electable between 200V & 500V; 4mmpair of sockets f.light barriers (5V/1A,short circuit proof)& f.analogoutput (5V/500 Imp/s)

Timer meas.modes:

single, add., auto& double , Display: 6 digit, LED, 20 mm highf ormeasured values, diode matrix 3 digit,20 mm for all units, Loud-speaker can be turned off., Modern plastic casing, shock-proofeasy toservice, light & stackablewith retractable carrying handle and set-upfoot. , Dimensions:230 x 236 x 234 mm

13603-9313603-93

Cobra4 Sensor-Unit Timer / CounterCobra4 Sensor-Unit Timer / Counter


Sensor-Unit of the Cobra4 family. Interface-module with timer andcounter functionality for up to four light barriers, one measuring mi-crophone, movement sensor, falling sphere apparatus or other deviceswith TTLcompatible signals. Optionally anexternal trigger device canbe used (switch, starter system for motion track, ...). The measuredvalues of the sensor can be transmitted with the Cobra4 Wirelessmanager and the Cobra4 Wireless-Link by radio or with the USB-Linkto the PC. All Cobra4 sensor-units are quickly connectable through asecure and reliable plug-in / lockable connection.Some applications:

▪ linear Motion incl. laws of collision with motion and air track▪ free fall with picket fences or falling ball apparatus▪ oscillations▪ rotational motion▪ frequency of acoustical signals

BenefisBenefis

▪ With the aid of the intuitive softwaremeasure for Cobra4 thesingleapplication scenarios can be started comfortably with 10preset modes

▪ All relevant attempts with timemeasurement and counting arecovered

▪ The simultaneous observation of thesignal level facilitates theunderstanding of the measured values of light barriers

▪ Investigation of complex contexts through combination with oth-er sensors from the Cobra4 family

▪ Thanks to radio measurement NO disturbing cable anymore - NEWdidactic possibilities through radio transmission (not dependingon the location of the PC, moving sensors)


▪ Light barrier, compact (up to 4 lightbarriers)▪ Cobra4 adapter for Sensor-Unit Timer/Counter to connect a light

barrier

Cobra4 Sensor-Unit Timer/CounterCobra4 Sensor-Unit Timer/Counter12651-0012651-00



971

Cobra4 Junior-LinkCobra4 Junior-Link12610-0012610-00



Universal fork-type light barrier to measure short and long shadowingperiods.

BenefitsBenefits

▪ An incremental wheel with a string groove which can be attachedto the fork of the light barrier, which allows to measure distancesby counting the ribs of the incremental wheel.


▪ Dimensions: 40 x 40 mm▪ Supply voltage: 5 V▪ Incl. incremental wheel


Incremental wheelIncremental wheel11207-2111207-21

Adapter plate for Light barrier compactAdapter plate for Light barrier compact11207-2211207-22

Light barrier with counterLight barrier with counter


With the function of an electronic time measuring and countingdevice.

Benefits:Benefits:

4 figureluminous display, selection switch for 4 operating modes,RESET key, BNC jack for exterior starting and/ or stopping of timemeasurement, TTL output to control peripheral devices, power supplyconnector (4 mm jacks)

Equipment and technical Data:Equipment and technical Data:

Fork width: 70 mm, Usable barrier depth: 65 mm, Sensitivity ad-justable, Max. working frequency: 25 kHz, External dimensions (mm):

160 x 25 x 105M6 , Threaded holes in casing: 7, Stem included: 100mm, M6 thread

11207-3011207-30

PHYGATE USB interface for light barriers + softwarePHYGATE USB interface for light barriers + software

PHYGATE can be used to connect the"Compact" light barrier to theUSBinterface of the PC. Measured data fromup to 5 light barrierscan be recordeddirectly at the computer using the"measure" softwarePHYCON and berepresented in graphical formimmediately. PHYGATEcan be used in manyexperiments, for demonstratingtranslation, rota-tion and movement, forexample.

11207-2511207-25



972




BenefitsBenefits




Relative Humidity:


Air Pressure:


Air Temperature:


Brightness:


12670-0012670-00






12121-0012121-00

Weather stationWeather station04850-0004850-00

Weather station, wirelessWeather station, wireless04854-0004854-00

Weather monitor, 6 lines LCDWeather monitor, 6 lines LCD87997-1087997-10

Weather monitor with satellite-based dataWeather monitor with satellite-based data87997-2087997-20

Demonstration barometerDemonstration barometer02687-0002687-00

Cup anemometer for Cobra3Cup anemometer for Cobra3


Wind sensor with large speed measurement range of 4 to 140 km/hfor fitting to masts or support rods or poles.

BenefitsBenefits

Can be screwed onto the tripod rod/pole (M6) or attached to any mastor jib using the fixing angle supplied.


▪ Operating temperature: o...+70°C▪ Measuring range: 1...40m/s resp. 4....140km/h▪ max. switching capacity: 0.6V▪ weight: 0.3kg▪ dimensions: 112 x 162 x 140 mm

12124-0012124-00

Rainfall gauge, diem typeRainfall gauge, diem type04855-0004855-00

Cup anemometerCup anemometer03085-1003085-10

Maximum-minimum thermometerMaximum-minimum thermometer04160-0004160-00

6.5 Measurement instruments6.5 Measurement instruments6.5.6 Meteorological instruments


973




BenefitsBenefits

▪ can be connected directly to the Cobra4Wireless-Link, the Cobra4Mobile-Link or the Cobra4 USB-Link.


▪ Sensoatar jacket: stainless steel▪ Measuring range: -20..+110°C▪ Absolute accuracy: ± 0.5°C▪ Resolution: 0.05°C▪ Time constant: 7 s▪ Data flow rate: 200 Hz▪ Connecting port: sub-D-15-pole▪ Sensor length / diameter: 200 mm, 6 mm▪ Cable length: 120 cm▪ Weight: 125 g

12640-0012640-00




BenefitsBenefits




Relative Humidity:


Air Pressure:


Air Temperature:


Brightness:


12670-0012670-00




BenefitsBenefits

▪ It can be fitted with two NiCr-Ni thermoelements (Type K) and apH probe or Redox measuring chain, in order to measure up totwo temperatures and one pH or potential value simultaneously

▪ The unit can be connected to the Cobra4Wireless-Link, the Cobra4Mobile-Link or the Cobra4 USB-Link using a secure and reliableplug-in/lockable connection.


Temperature:


pH:


Potential:

▪ Measuring range -2000..+2000 mV▪ Resolution: 0.1 mV▪ Measuring accuracy: ± 0.5%▪ Data flow rate: 5 Hz▪ Dimensions: approx. 62 mm x 63 mm, weight: 95 g

12630-0012630-00

6.5 Measurement instruments6.5 Measurement instruments6.5.7 Temperature measuring instruments, thermometers


974


12641-0012641-00

Cobra4 Sensor-Unit ThermodynamicsCobra4 Sensor-Unit Thermodynamics



BenefitsBenefits

▪ It canbe fitted with two NiCr-Nithermoelements (type K), in orderto measure up to two temperatures and one absolut pressurevalue simultaneously.

▪ The unit can be connected to the Cobra4Wireless-Link, the Cobra4Mobile-Link or the Cobra4 USB-Link using a secure and reliableplug-in/ lockable connection.


Temperature:

▪ Measuring range: -200...+1200°C▪ Resolution: 0.1 K▪ Measuring accuracy: equal to the accuracy of the gauges used

Pressure:

▪ Measuring range: 0...2000 hPa▪ Resolution 0.1 hPa▪ Measuring accuracy: ± 0,5%▪ Data flow rate: max. 5 Hz

Dimensions: approx. 62 mm x 63 mm x 35 mm. Weight: approx. 190g

Cobra4 Sensor-Unit Thermodynamics, pressure abs. 2 bar and 2Cobra4 Sensor-Unit Thermodynamics, pressure abs. 2 bar and 2temperature NiCr-Nitemperature NiCr-Ni12638-0012638-00






Cobra4 Sensor-Unit Conductivity+, Conductivity /Cobra4 Sensor-Unit Conductivity+, Conductivity /Temperature (Pt1000)Temperature (Pt1000)



Benefits:Benefits:

▪ The Cobra4 sensor may be connected directly to the Cobra4Wireless-Link, the Cobra4 Mobile-Link or the Cobra4USB-Link us-ing a secure and reliable plug-in / lockable connection.


Conductivity:

▪ Measuring range 1:0.0 .. approx. 2,500.0 µS/cm▪ Measuring accuracy: 4% of the measuring value ±0.15 µS/cm▪ Measuring range 2:0 .. approx. 45,000 µS/cm▪ Measuring accuracy: 4% of the measuring value ±3 µS/cm▪ Measuring range 3:0.00 .. approx. 1,100 mS/cm▪ Measuring accuracy: 4% of the measuring value ±0.05 mS/cm

Temperature:

▪ Measuring accuracy:-20.0°C..150.0°C▪ Resolution: 0.1 K▪ Measuring accuracy: ±0.5K (in the range 0..100°C)▪ Measuring cycle: 0.8...2s (adjusted automatically)▪ Dimensions approx. 62 mm x 63 mm



Cobra3, sensor -20..110 CCobra3, sensor -20..110 C


To be connected directly to the sensorports of the Cobra3 BASIC-UNIT.


▪ Sensor sheathing: stainless sationsteel▪ Diameter: 6 mm▪ Sensor length: 200 mm▪ Measuring range: -20°C...+110°C▪ Resolution: 0.2°C



975

▪ Total length incl. cable: 1.5 m

12120-0012120-00

Cobra3 Measuring module temperature, NiCr-Ni, 330°CCobra3 Measuring module temperature, NiCr-Ni, 330°C







Cobra3 Measuring module temperature PT100Cobra3 Measuring module temperature PT100

Measuring mod.,Temperature PT100Measuring mod.,Temperature PT10012102-0012102-00




Cobra3 BASIC-UNIT, USBCobra3 BASIC-UNIT, USB



BenefitsBenefits




3 analog input channels:

▪ Module port: ± 10 V▪ Connection type: 25-pole Sub-D▪ Sensor port 1: ± 30/10 V▪ Connection type: 4 mm socket▪ 9-pole Sub-D▪ Input: grounded▪ Input resistance: 500 kOhm▪ Sensor port 2:± 30/10/3/1/0.3/0.1 V▪ Connection type: 4 mm sockets▪ 9-pole Sub-D▪ Difference potential input:Input resistance: 1 MOhm

For all analog inputs:


Timer/Counter 1:


Timer/Counter 2:


General data:

▪ Supply voltage: 12 V DC/6 W▪ Interface: USB▪ Data transfer rate: 115200 bit/s▪ Memory: 12000 values



976

▪ Dimensions (mm): 190 x 135 x 90▪ Fail-safe plastic housing with support feet, several fixation pos-


Includes accessories:

▪ USB Cable


▪ Cobra3 power supply 12150.99











ADAPTER COND.4MM SOCKET/DIN PLUGADAPTER COND.4MM SOCKET/DIN PLUG13701-0213701-02







Temperature meter digital, 4-2Temperature meter digital, 4-2


The equipment is suitable for the simultaneous measurement of up to4 temperatures.

BenefitsBenefits

The device has the following advantages in particular:

▪ 2 LED displays, 4-digit , height 20 mm▪ Plotter output▪ Differential temperature measurement▪ Calibration function (set 0.00)▪ Automatic comparison of sensor differentials (adjust)▪ Can be switched between °C and K display modes


▪ Meauring range: -50...+300°C▪ Resolution: 0.1°C/( 0.01°C if 0.00 set)▪ Pt 100 probes▪ Connectors: 4 diode plugs, 5-pin▪ Dimensions: 270 x 236 x 168 mm▪ RS 232 C, 9600 baud

Temperature meter digital, 4-2Temperature meter digital, 4-213617-9013617-90

Softw. temperature meter 4-2Softw. temperature meter 4-214405-6114405-61


Temperature immersion probe Pt100, stainless steelTemperature immersion probe Pt100, stainless steel-20...+300°C-20...+300°C


Temperature probes Pt100 for temperature measuring device 4-2(13617-93) in protective conduit of stainless steel and Teflon, orin movable gilded silver lamina in bent stainless steel tubing(11759-02). Precision of the absolute temperature: 0.1 K at 0°C to 0.2K at 100°C. Connection cable with four isolated copper lines for theimpedance measurement according to four-conductor method, 5-polediode insert.




Digital thermometer, NiCr-Ni, -50...+1300°CDigital thermometer, NiCr-Ni, -50...+1300°C

07050-0007050-00

Digital Thermometer, 2 x NiCr-NiDigital Thermometer, 2 x NiCr-Ni

07050-0107050-01

Thermocouple NiCr-Ni, sheathedThermocouple NiCr-Ni, sheathed


Thermocouple with standard type-K 2-pin flat plug which makes nocontribution to the thermovoltage.



977

BenefitsBenefits

▪ Suitable for use with a digital thermometer, hand-held temper-ature meter, or any interfaces using type-K connectors (e.g. Cobra4 Thermodynamics or NiCr-Ni thermocouple sensor units)


▪ Magnesium oxide powder insulation▪ Stainless steel sheath▪ Response time: <1 s▪ Cable: 1 m






Meter, 10/30 mV, 200 deg.CMeter, 10/30 mV, 200 deg.C


Meter for measurements with thermocouples.


▪ Meter 10/30 mV▪ moving coil instrument for temperature determination with diff.

thermocouples to 1700 °C▪ class 1.5▪ input resitance 50/100 Ohm▪ mV-scale and temperature scale for Fe/Cu-Ni-thermocouple

07019-0007019-00

Thermocouple Fe-CuNi 2,2 OhmThermocouple Fe-CuNi 2,2 Ohm


Thermocouple leads individually spun with glass fibre and woven to-gether with glass fibre, Measuring probes point/welded and insu-lated, Two 4-mm plugs, Temperature range:Measurement at a specific point (one probe only): up to 700°C

Other measurements: up to 400°C, Delay: < 10 s, Length: 70 cm ap-prox.

07019-0107019-01

Accessories temperature measuringAccessories temperature measuring

Protective sleeves f.temp.probe,2Protective sleeves f.temp.probe,211762-0511762-05

Holder for thermometer/tube, 3 piecesHolder for thermometer/tube, 3 pieces38002-0138002-01

Glass tube holder with tape measure clampGlass tube holder with tape measure clamp05961-0005961-00

Heat conductive paste,50 gHeat conductive paste,50 g03747-0003747-00

Heat sensitive paperHeat sensitive paper04260-0004260-00

Laboratory thermometerLaboratory thermometer


Enclosed-scale thermometer with blue or red filling; scale support infrosted glass, fixing of the weighing scale support above with meltedglass pin; button or ring for support; in protective sleeve. Depth ofimmersion = 50 mm.

Thermometer -10...+30 CThermometer -10...+30 C05949-0005949-00

Thermometer -10...+50 CThermometer -10...+50 C38034-0038034-00

Lab thermometer,-10..+50CLab thermometer,-10..+50C38055-0038055-00


Lab thermometer,w.stem,+15..+40CLab thermometer,w.stem,+15..+40C38057-0038057-00



Laboratory thermometer with immersion shaftLaboratory thermometer with immersion shaft


Implementation as laboratory thermometer, with blue filling, depthof immersion = 160 mm, in protective sleeve.

Lab thermometer,w.stem,+15..+40CLab thermometer,w.stem,+15..+40C38059-0038059-00



978

Lab thermometer,w.stem,-10..+110CLab thermometer,w.stem,-10..+110C38060-0038060-00

Lab thermometer,w.stem,-10..+250CLab thermometer,w.stem,-10..+250C38061-0138061-01

Student thermometerStudent thermometer


Enclosed-scale thermometer with red filling; scale support in paste-board; ring for support; in protective sleeve. Diameter 8 mm. Depth ofimmersion = length of the immersion shaft (rejuvenation of the glasstube).

Students thermometer,-10...+110°C, l = 180 mmStudents thermometer,-10...+110°C, l = 180 mm38005-0238005-02

Students thermometer, -10...+110°C, l = 230 mmStudents thermometer, -10...+110°C, l = 230 mm38005-1038005-10

All-use thermometer 1°C subdivision (without HgAll-use thermometer 1°C subdivision (without Hgfilling)filling)


Mercury-free, upright thermometer. Complete-immersion adjustedenclosed-scale thermometer with red or blue filling. Prismatic capil-lary tube, free, with protective sleeve.

Lab thermom. -50...+50°C,w/o HgLab thermom. -50...+50°C,w/o Hg47038-0047038-00

Lab thermom. -10...+50°C,w/o HgLab thermom. -10...+50°C,w/o Hg47039-0047039-00

Lab thermom.-10...+100°C,w/o HgLab thermom.-10...+100°C,w/o Hg47040-0047040-00




Lab thermometer, with stem, -10..+360°C, d = 6 mmLab thermometer, with stem, -10..+360°C, d = 6 mm

Thermometer with a green ecologicallysafe (mercury-free) filling:*measuring range: -10...+360°C* division: 2°C* depth of immersion:76 mm* diameter: 6 mm* length: 300 mm,* white background with ablack skale* holding ring* delivery takes place inprotection-tube outof plastic

38069-0038069-00

Thermometer,-100....+30 CThermometer,-100....+30 C


Enclosed-scale thermometer with red toluene filling.


▪ Normal glass 16/III▪ Measuring range: -100...+30 °C▪ Can be calibrated

38151-0038151-00

All-use thermometer with HgAll-use thermometer with Hg


Mercury-content enclosed-scale thermometer, for daily laboratoryuse. Complete-immersion adjusted, prismatic capillary tube , free,with protective sleeve.

Chemical thermometer,-10...+360 CChemical thermometer,-10...+360 C38008-0038008-00

Lab therm.-10...+200°C, grad.1°Lab therm.-10...+200°C, grad.1°47047-0047047-00

Precision thermometer with Hg, division <1°CPrecision thermometer with Hg, division <1°C


Mercury-content precision thermometers with high resolution, cal-ibratable, complete-immersion adjusted. For improved readability,blue-illuminated, prismatic measuring capillary tube, including pro-tective sleeve.

Thermometer, -10...+360 CThermometer, -10...+360 C38029-0038029-00

Thermometer, -10...+ 50 CThermometer, -10...+ 50 C38033-0038033-00

Laboratory straight enclosed-scale thermometerLaboratory straight enclosed-scale thermometer

Function and Applications

Enclosed-scale thermometer with blue filling, measuring capillarytube prismatic, yellow background, scale support in frosted glass, inprotective sleeve; upper diameter: approx. 17 mm; upright diameter:approx. 8 mm; depth of immersion = upright length.

Lab thermometer,stem,-35..+50CLab thermometer,stem,-35..+50C38062-0038062-00

Lab thermometer,stem,0..+100CLab thermometer,stem,0..+100C38063-0038063-00

Lab thermometer,stem,0..+250CLab thermometer,stem,0..+250C38064-0038064-00

Clinical thermometer,+35...+42 CClinical thermometer,+35...+42 C




979

Clinical thermometer for measuring maximum temperature, calib-rated and mercury-free.


▪ Measuring range: +35...+42 °C▪ Precision: +/- 0.1°C▪ Complete with protective case

04165-0004165-00

Clinical thermometer, digitalClinical thermometer, digital


Calibrated electronic thermometer with digital display and alarmwhen final temperature reading is attained.


▪ Measuring range: -32...+42°C▪ Precision: 0.1°C▪ Automatic cut-off: after 10 mins.

04166-0004166-00

Demonstration thermometerDemonstration thermometer


Demonstration thermometer with coloured filling.


Thanks to its coloured scale, which can be seen well from a distance,this thermometer is well suited for use in demonstration experiments


Measuring range: -60...+160°C, Scale divisions: 1°C, Total length: 500mm.

04135-0004135-00

Soil thermometerSoil thermometer


The thermometer can be used to measure soil temperature simply byinserting it into the soil using the handles.


▪ Temperature sensor made of normal glass in sturdy metal framewith a piercing tip, scale backing made of frosted glass

▪ Measuring range: -38°C ... +50°C▪ Scale divisions: 1°C▪ Penetration depth: up to 300 mm

64219-0064219-00

Non-graduated thermometer for thermal expansionNon-graduated thermometer for thermal expansion


This non-graduated thermometer is used for the preparation of thetemperature scale through marking of the 2 fundamental points,melting point of ice 0°C and boiling point of water 100°C at an ambi-ent pressure of 1013 hPa.

Agitation thermometer, non-graduatedAgitation thermometer, non-graduatedWith red alcohol filling, round capillary tube, white background, inglass rod, length 240 mm, diameter 8 mm.

Non-graduated thermometerNon-graduated thermometerThermometer with blue alcohol filling, prismatic capillary tube, at-tached on metal plate 330 mm x 35 mm.

Demonstration thermometer, non-graduatedDemonstration thermometer, non-graduatedWith blue-colored alcohol filling which is readable from a distance,round capillary tube, attached on angled Al profile section so that thecapillary is protected against mechanical damage to a large extent, Alprofile section with bore and support bracket, 700 x 80 x 1.5 mm.

Stirring thermometer non-graduat.Stirring thermometer non-graduat.38003-0038003-00

Thermometer, non-graduatedThermometer, non-graduated04256-0004256-00

Thermometer, ungraduatedThermometer, ungraduated04136-0004136-00



980




Benefits:Benefits:

▪ It can be fitted with two NiCr-Ni thermoelements (type K) and apH probe or Redox measuring chain, in order to measure up totwo temperatures and one pH or potential value simultaneously.

▪ The unit can be connected to the Cobra4Wireless-Link, the Cobra4Mobile-Link or the Cobra4 USB-Link using a secure and reliableplug-in / lockable connection.


Temperature:


pH:


Potential:

▪ Measuring range -2000..+2000 mV▪ Resolution: 0.1 mV▪ Measuring accuracy: ± 0.5%

▪ Data flow rate: 5 Hz▪ Dimensions: approx. 62 mm x 63 mm▪ Weight: 95 g

Cobra4 Sensor-Unit Chemistry, pH and 2 x Temperature NiCr-NiCobra4 Sensor-Unit Chemistry, pH and 2 x Temperature NiCr-Ni12630-0012630-00














Benefits:Benefits:

▪ It canbe fitted with a pH probe or Redoxmeasuring chain, in orderto measure pH or potential values.


Equipment and technicla data:Equipment and technicla data:

pH:


Potential:

▪ Measuring range: -2000...+2000 mV▪ Resolution: 0.1 mV▪ Measuring accuracy: ± 0.5%

Data flow rate: 5 Hz, Dimensions: approx. 62 mm x 63 mm, Weight:70 g

Cobra4 Sensor-Unit pH, BNC connectorCobra4 Sensor-Unit pH, BNC connector12631-0012631-00





6.5 Measurement instruments6.5 Measurement instruments6.5.8 pH and conductivity measuring instruments


981

Cobra4 Sensor-Unit Conductivity+, Conductivity/Cobra4 Sensor-Unit Conductivity+, Conductivity/Temperature (Pt1000)Temperature (Pt1000)



Benefits:Benefits:

The Cobra4 sensor may be connected directly to the Cobra4 Wireless-Link, the Cobra4 Mobile-Link or the Cobra4USB-Link using a secureand reliable plug-in / lockable connection.


Conductivity:

▪ Measuring range 1: 0.0 .. approx. 2,500.0 µS/cm, Measuring ac-curacy: 4% of the measuring value ±0.15 µS/cm

▪ Measuring range 2: 0 .. approx. 45,000 µS/cm, Measuring accur-acy: 4% of the measuring value ±3 µS/cm

▪ Measuring range 3: 0.00 .. approx. 1,100 mS/cm, Measuring ac-curacy: 4% of the measuring value ±0.05 mS/cm

Temperature: Measuring accuracy:-20.0°C..150.0°C, Resolution: 0.1 K,Measuring accuracy: ±0.5K (in the range 0..100°C)

Measuring cycle: 0.8...2s (adjusted automatically), Dimensions ap-prox. 62 mm x 63 mm







BenefitsBenefits



Conductivity:


Temperature:



12633-0012633-00

Cobra3 BASIC-UNIT, USBCobra3 BASIC-UNIT, USB





982

BenefitsBenefits




3 analog input channels:

▪ Module port: ± 10 V▪ Connection type: 25-pole Sub-D▪ Sensor port 1: ± 30/10 V▪ Connection type: 4 mm socket▪ 9-pole Sub-D▪ Input: grounded▪ Input resistance: 500 kOhm▪ Sensor port 2:± 30/10/3/1/0.3/0.1 V▪ Connection type: 4 mm sockets▪ 9-pole Sub-D▪ Difference potential input:Input resistance: 1 MOhm

For all analog inputs:


Timer/Counter 1:


Timer/Counter 2:


General data:

▪ Supply voltage: 12 V DC/6 W▪ Interface: USB▪ Data transfer rate: 115200 bit/s▪ Memory: 12000 values▪ Dimensions (mm): 190 x 135 x 90▪ Fail-safe plastic housing with support feet, several fixation pos-


Includes accessories:

▪ USB Cable


▪ Cobra3 power supply 12150.99



Measuring module pH/potentialMeasuring module pH/potential12101-0012101-00



Reference electrode, AgClReference electrode, AgCl18475-0018475-00



Measuring module ConductivityMeasuring module Conductivity12108-0012108-00



Cobra3, sensor -20..110 CCobra3, sensor -20..110 C12120-0012120-00





















Demomultimeter, p, pH, T, U, I, R, f, RS232, 230 VDemomultimeter, p, pH, T, U, I, R, f, RS232, 230 V



983

Funktion und VerwendungFunktion und Verwendung

Modern multi-purpose device for measuring of voltage, current, res-istance, frequency, temperature, pressure and pH

Benefits:Benefits:

▪ 45 mm LED-display▪ LED-matrix for display of the units▪ serial port for connecting PC▪ Auto-range function


Voltage:

▪ 4 ranges 0mV - 500V ACDC▪ Resolution: 0.1mV/10mV/100mV/1V

Current:

▪ 3 ranges 0mA - 10A▪ Resolution: 0.1mA/10mA/100mA

Resistance:

▪ 5 ranges 0Ohm - 10MOhm▪ Resolution (Ohm): 1/10/100/1000/100.000

Frequency:

▪ 4 ranges1Hz - 100kHz▪ Resolution: 1Hz/10Hz/100Hz

Temperature:

▪ 2 ranges 200°C - 1370°C▪ Resolution: 0.1°C/1°C

pH- Resolution:

▪ 1 range : 0 - 14pH▪ Resolution: 0.01

pH- Pressure:

▪ 2 ranges 0 - 7000hPa▪ Resolution: 0.1hPa/1hPa

Dimensions (mm): 288x165x235

Demomultimeter p, pH, T, U, I, R; RS 232, 230 VDemomultimeter p, pH, T, U, I, R; RS 232, 230 V13721-9313721-93





Pressure sensor, absolute press.Pressure sensor, absolute press.07136-0107136-01

Pressure sensor 2, 500-7000 hPaPressure sensor 2, 500-7000 hPa07136-0207136-02







Software DemomultimeterSoftware Demomultimeter14409-6114409-61

Digital pH-meterDigital pH-meter


with clear, easy to operate and splashproof film keyboard; for demon-stration classes and practicals. Due to the installed RS-232 interfaceand the available software, it is possible to transfer data to the com-puter for storage and analysis.

BenefitsBenefits

▪ demonstrative 4-digit display with a character-height of 20 mm▪ automatic display of the units belonging to the measured values▪ manual, or for connected Pt-1000temperature probe, automatic

temperature compensation of the measured values▪ to calibrate the pH-probe, free selection of the buffer solutions

(anypH-value)▪ 20 storage spaces for measured data;remain stored even after the

measuringdevice has been switched off▪ storage of the pH-probe calibration retained even after the

device has been switched off, analogue for pX-probes with theappropriate probes, enablesion

▪ selective measurements (pX), e.g.X=Cl- ; NO3- ; Na+- due to highinput resistance, ideally used as an mV-meter for the measure-ment of electronic potentials

▪ Display of the electrode steepness modern plastic casing, impact-proof,easily serviced, light and stackable,with handle for carryingthat can belowered into the case afterwards and feet for workingposition


pH

▪ Measuring range: 0 - 14 pH▪ Accuracy: 0.01 pH▪ Resolution: 0.01 pH

pX

▪ Measuring range: 0 - 14 pX▪ Accuracy: 0.01 pX▪ Resolution: 0.01 pX▪ VoltageMeasuring range: -2000 - +2000 mV▪ Accuracy: 0.1%▪ Resolution: 1 mV

Temperature

▪ Measuring range: 0 - 100°C▪ Accuracy: 0.5°C▪ Resolution: 0.1°C▪ Mains supply: 230 V / 50-60 Hz

Dimensions (mm): 230 x 236 x 168

Digital pH-meterDigital pH-meter13702-9313702-93




984



pH electrode, f.surface measurem.pH electrode, f.surface measurem.18453-0018453-00


Software pH meter DEMOSoftware pH meter DEMO14408-6114408-61

PC-CABLE 25P.PLUG-25/9P.SOCKETPC-CABLE 25P.PLUG-25/9P.SOCKET14601-0014601-00

Digital conductivity meterDigital conductivity meter


For measurement of conductivity, specific resistance, concentrationand temperature

Benefits:Benefits:

▪ The clearly arranged keyboard allows easy operation of the instru-ment, which is distinguished by not only being capable of dis-playing conductivity, but also derived quantities.

▪ Cell connection via a 5 pin diode socket▪ The following quantities are displayed: conductivity, specific res-

istance, concentration, temperature▪ 4 digit demonstrative display, height of digits 20 mm▪ Automatic temperature compensation▪ Standard value of cell constants manually changeable or auto-

matic calibration with standard calibration solution▪ RS 232 interface and software for data transfer to a computer for

storage▪ Automatic selection of measuring range and display of the units:

µS/cm or mS/cm, Ωcm or kΩcm, mg/l or g/l, °C.


▪ Conductivity measuring range: 0.001 µS...200 mS▪ Concentration measuring range: 1 μg/l...1 kg/l▪ Specific resistance measuring range: 1 mΩcm...1 MΩcm▪ Temperature measuring range: -30...+100°C▪ Interface RS232▪ Mains supply 230 V/ 50...60 Hz.

Digital conductivity meterDigital conductivity meter13701-9313701-93



Data cable RS 232, SUB-D/USBData cable RS 232, SUB-D/USB07157-0107157-01


Software Conductivity Meter DemoSoftware Conductivity Meter Demo14400-6114400-61

PC-CABLE 25P.PLUG-25/9P.SOCKETPC-CABLE 25P.PLUG-25/9P.SOCKET14601-0014601-00

Stand.solu.1413Stand.solu.1413æS/cm(25S/cm(25øC), 460mlC), 460ml47070-0247070-02

pH-elektrodes with DIN plugpH-elektrodes with DIN plug



pH electrode, f.surface measurem.pH electrode, f.surface measurem.18453-0018453-00


pH-elektrodes with BNC plugpH-elektrodes with BNC plug





Potassium chloride,sol. 3M 100mlPotassium chloride,sol. 3M 100ml48203-1048203-10

Redox electrode, BNCRedox electrode, BNC



985


For measuring of electrochemical potentials with plastic shaft andBNC plug.

BenefitsBenefits

▪ low- maintenance because of gel electrolyte.▪ robust design

Equipment and technical dataEquipment and technical data▪

▪ electrode with plastic shaft and a platinum rod▪ measurement chain made of platinum electrode and Ag / AgCl ref-

erence electrode▪ temperature range: 0 ... +80 ° C▪ dimensions of the shaft (mm): 120 x 12▪ cable length: 1m

46267-1046267-10

Platin.electrodesPlatin.electrodes


Special electrodes with 4mm plug.


Platinum electrode in protective tube, d=8mm


Electrode platinum,shortElectrode platinum,short45207-0045207-00

Antimony electrodeAntimony electrode


Measuring electrode from antimony;together with a silver chloridereference electrode for measuring of pH values in the range from pH2.0 to pH 9.5


diameter: 10 mm, lenght: 120 mm, fixed cable of 1 m lenght with a4 mm plug

18477-0118477-01

Reference electrode, AgClReference electrode, AgCl


Recommended accessories for the measurement of electrochemicalpotentials in pH/potential measurements.

BenefitsBenefits

Equipped with refillable Ag/AgCl electrolyte, Suitable for use in con-junction with measuring electrodes (e.g. 45206-00) for pH, redox po-tential and ion-selective measurements


Electrode with glass shaft and ceramic diaphragm, Shaft diameter: 12mm, Shaft length: 120 mm, Temperature range: -5 ... +80°C, Cablelength: 1 m

18475-0018475-00

Storage of pH electrodesStorage of pH electrodes

Storage flask for pH electrodes,filled with 250 ml 3.0 M KClStorage flask for pH electrodes,filled with 250 ml 3.0 M KClsolutionsolution18481-2018481-20

Protection sleeve for electrode with a diameter of 12 mmProtection sleeve for electrode with a diameter of 12 mm37651-1537651-15



986




BenefitsBenefits

It canbe fitted with two NiCr-Nithermoelements (type K), in order tomeasure up to two temperatures and one absolut pressure value sim-ultaneously.The unit can be connected to the Cobra4Wireless-Link, the Cobra4Mobile-Link or the Cobra4 USB-Link using a secure and reliable plug-in / lockable connection.

Cobra4 Sensor-Unit Thermodynamics, pressure abs. 2 bar and 2Cobra4 Sensor-Unit Thermodynamics, pressure abs. 2 bar and 2temperature NiCr-Nitemperature NiCr-Ni12638-0012638-00


Measuring module luxMeasuring module lux


Plug-in module for measuring the illuminance.


▪ Measuring range selectable with the aid of the software.▪ Measuring Range, resolution: 300 Lx 0.15 Lx; 3 kLx1.5 Lx; 30 kLx

15 Lx; 300 kLx 150 Lx

Measuring module luxMeasuring module lux12107-0012107-00


Luxmeter, digital displayLuxmeter, digital display

47672-0147672-01

Cobra3 pressure sensorsCobra3 pressure sensors

BenefitsBenefits

▪ With hose connector and hose section for connecting the moduleto any type of peripheral equipment.

▪ Including data cable for Cobra3 sensors.


▪ 35 cm data cable▪ Measuring range: 80 mbar and 2.0 bar, respectively▪ Autorange: (80-8-2,4) mbar and (0.6-2.0) bar, respectively▪ Max. pressure: 750 mbar and 10 bar, respectively▪ Accuracy: 5 % and 1.5 %, respectively▪ Resolution: 0.05 %▪ Dimensions (mm): 75 x 42 x 25

Cobra3 press. sensor 2.0 bar abs.Cobra3 press. sensor 2.0 bar abs.12128-0012128-00

Cobra3 press. sensor 2.0 bar diff.Cobra3 press. sensor 2.0 bar diff.12129-0012129-00

Cobra3 press. sensor 80 mbar diff.Cobra3 press. sensor 80 mbar diff.12130-0012130-00



Lux meter, hand-held, RS232 interface, data loggerLux meter, hand-held, RS232 interface, data logger


For determining light intensities of up to 300 klx in air and waterbodies.

BenefitsBenefits

▪ 2 four-digit LCD Display with 15 or 7.5 mm digit height▪ Analog bar display with good resolution (2% of measuring range)

6.5 Measurement instruments6.5 Measurement instruments6.5.9 Oxygen, lux and pressure measuring instruments


987

▪ RS232 interface to transmit the measurements to a computer oron a large display

▪ built-in data logger for storing max.250 measurements▪ Representation of the minima, maxima and averages of a series

of measurements▪ Battery, accu or external power supply▪ automatic shut-down▪ water protected keyboard▪ Calibration manually or automatically


▪ 4 measuring ranges 0,001 Lx-300 kLx▪ resolution 0,1/1/10/100 Lx▪ Accuracy 3/3/3/5 %▪ 5pole probe connector jack▪ Data interface type RS 232 (serial)▪ Baudrate 9600 bit / s▪ USB port connector

Softw. Luxmeter, hand-heldSoftw. Luxmeter, hand-held14417-6114417-61

Lux meter, hand-heldLux meter, hand-held07137-0007137-00

Luxmeter probeLuxmeter probe12107-0112107-01


6.5 Measurement instruments6.5 Measurement instruments6.5.9 Oxygen, lux and pressure measuring instruments


988

Geiger-Müller-CounterGeiger-Müller-Counter


Demonstration and student use unit in connection with Geiger Müllercounting tubes for experiments on radioactivity.


▪ 4-digit LED display, 20mm high.▪ 4 standard measurement times 1/10/60/100 s▪ Automatic measurement sequence with memory 10 s▪ Freely selectable measuring time▪ BNC-socket for counting tube 500V▪ 4-mm-bushes for event counting with TTL signals▪ Mains 100-230 V/50-60 Hz▪ Shock proof casing with carrying handle▪ Dimensions 190 x 140 x 130 mm

13606-9913606-99

Accessories for the measurement of radioactivityAccessories for the measurement of radioactivity

Counter tube, GM, 45 mmCounter tube, GM, 45 mm09007-0009007-00

Counter tube, type BCounter tube, type B09005-0009005-00

Counter tube, type A, BNCCounter tube, type A, BNC09025-1109025-11


Counter tube moduleCounter tube module


Plug-in module for measuring radioactive radiation with the aid of aGeiger Müller counter tube.

BenefitsBenefits

▪ The module also supplies the counter tube with the necessarysupply voltage.


▪ Counter tube voltage: 500 V ± 5%▪ Max. pulse frequency: 400,000 pulses per min

Counter tube moduleCounter tube module12106-0012106-00


Gas detector for the quantitative determination ofGas detector for the quantitative determination ofgasgas


For the determination of gaseous air pollution

BenefitsBenefits

Bellows pumps to be operated by hand for the suctioning of definedair quantities. With different test-tubes, gaseous air pollution can bedetermined quantitatively and qualitatively.


Suction volume: 100 ml/stroke, automatic stroke counter to avoidfaulty measurements, optical display signals that the necessary testair has been suctioned.

Gas tester I, quantitat.analysisGas tester I, quantitat.analysis64199-0264199-02

Accessory set for Gas TesterAccessory set for Gas Tester64199-0664199-06

Oxygenmeter, hand-heldOxygenmeter, hand-held


For measurement of oxygen concentration or saturation of temperat-ure and of atmospheric pressure.

BenefitsBenefits



of measurements▪ Battery, accu or external power supply▪ automatic shut-down▪ water protected keyboard▪ Automatic air pressure and temperature correction▪ Manual salinity correction


Oxygen

▪ Measuring ranges:▪ Concentration 0,0...20,0 mg O2/l▪ Saturation 0-120%▪ Accuracy 1,5% of meas. value▪ Salinity correct. 0...70 salinity▪ Connection 5 pin diode socket

Temperature

▪ Measuring range 0...+45C▪ Resolution 0.1C▪ Accuracy +-( 0.1C + 1Digit)▪ Type of probe Pt 1000

Atmospheric pressure

▪ Measuring range 500...1100 hPa (mbar)


6.5 Measurement instruments6.5 Measurement instruments6.5.10 Radioactivity, sound level and gas measuring instruments


989

12105-01 Oxygen/Temperature probe

Oxygenmeter, hand-heldOxygenmeter, hand-held07135-0007135-00


Softw. Oxygenmeter, hand-heldSoftw. Oxygenmeter, hand-held14415-6114415-61

Universal CounterUniversal Counter


The universal counter is used for measuring time, frequency, pulserates, pulse counting, periodic times, speeds and velocities.

BenefitsBenefits

▪ The device has all the qualities that are expected of a modernuniversal counter and is also equipped with a number of technic-al specifics of how it specifically arise from the requirements ofscience teaching practice.

▪ For the scientifically correct representation of each measurementis shown in principle with the associated unit. With the overflowof the display is automatically switched into the next area.

▪ Before the measurement starts it can be manually adjusted to amaximum of 6 decades defined range, eg to suppress is not phys-ically meaningful digits on the display.

▪ A special jack for direct connection of a GM counter tube is avail-able for radioactivity experiments. The required voltage can bechanged manually to determine the characteristics of a countertubes to.

▪ The stopwatch function can be entered by means of electricalcontacts, sensors, or manually in the various types of triggers forthe precise starting and stopping for time measurement.

▪ The measured values are represented by six red 20mm high-contrast 7-segment displays. An additional three-digit display isused to display the unit (ms, s, Hz, kHz, MHz, I / s, RPM, Imp, V, m/ s).

▪ The various operating states are indicated by LEDs.▪ Range switching in all modes manually (before measurement) and

automatically when an overflow.


▪ Operating temperature range 5th .. 40 ° C▪ Relative humidity <80%▪ Digital display:▪ Measurement reading LED 6-digit, 7-segment, 20 mm▪ Units LED 3-digit, 5x7 dot matrix▪ Units ms, s, Hz, kHz, MHz, I / s, RPM, Imp, V, m / s▪ Signal Input:▪ Signal bandwidth 0.1 Hz .. 10 MHz▪ Counter Tube Input voltage 150 V. .. 660 V (factory setting: 500V)

with manual adjustment▪ Photoelectric output for power supply of 5 V sat. max 1 A▪ Stopwatch 0.000 ... 99,999.9 s, resolution 1 ms▪ Timer 0.000 ms ... 3999.99 s, resolution1µs▪ Velocity 0.000 m/s...9999.9 m / s, resolution 0.001 m / s▪ Period measurement 0.000 ms ... 99.9999 s, resolution 1µs▪ Frequency measurement 0.00 Hz .. 9.99999 MHz, resolution 10

mHz

▪ Speed measurement 6. .. 99,999 RPM, 1 RPM resolution▪ Pulse counting 0. .. 999,999 Imp▪ Pulse rate measurement 0.0 ... 99,999.9 I / s▪ Mains supply: Mains voltage 110 .. 240 V, 50/60 Hz, 20 VA▪ Housing dimensions (W, H, D) 370 x 168 x 236 (mm)▪ Mass of 2.9 kilograms

13601-9913601-99

Geiger-Müller-Counter Gamma-Scout®Geiger-Müller-Counter Gamma-Scout®

13608-0013608-00

Sound level indicator 40-120dBSound level indicator 40-120dB


Sound level indicator


▪ Measuring range 54-126 dB▪ Number Ranges 7▪ Resolution 2 dB▪ Analogue output 0.7 Vrms / rms▪ Frequency range 300 Hz-8 kHz▪ Power supply 9-volt battery▪ Dimensions 180x68x36 mm▪ Weight 160 g

65969-0065969-00

6.5 Measurement instruments6.5 Measurement instruments6.5.10 Radioactivity, sound level and gas measuring instruments


990

Spectrophotometer 190-1100 nmSpectrophotometer 190-1100 nm


Spectrophotometer 190-1100 nm

BenefitsBenefits

The UV-VIS spectral photometer is characterised by its compact designand due to its wide range of possible uses, operation is via a clearlyset out overlay keyboard on the screen dialogue, current wavelengthsand measured values can be displayed in large format, alternatively,all measured values can also be presented graphically or in tableformat on the LCD screen with background lighting, strong light,high performance optics enable absorption and transmission meas-urements to be taken in the whole wavelength range of 200 to1100 nm with automatic switching between the twolight sources ,a high speed scanner minimises the susceptibility to errors during awavelength changeover and thusenables very precise measurement,storage of measurement parameters, data, calibration curves, spectra,etc, spectral scanning of samples with freely selectable wavelengthrange, automatic baseline correction and band/ trough identifica-tion, production of a calibration curve withup to 10 concentrationstandards, details of the straight line formula, automatic correctionagainst the zerosolution, the device can be connected to aprinter orcomputer with a serial port via an installed Centronix or RS232inter-face.


Light sources: 1 Halogen lamp1 Deuterium lamp, Wavelength range:190-1100 nm, Wavelength accuracy: ± 1 nm, Wavelength repeatab-ility: ± 0.3 nm, Spectral bandwidth: 5 nm, Photometric range: - 0.3to 3 Abs 0.0 to 200% Transmittance, Long-term stability: ± 0.005Abs/h, Cuvette holder: for square cuvettes with external dimensions12 mm × 12 mm, Outputs: serial RS232C, parallel Centronix, Dimen-sions (WxDxH): 420 x 380 x 275 mm, Mains: 230 V~

35655-9335655-93

Software f. UV-SpectrophotometerSoftware f. UV-Spectrophotometer

35655-0135655-01

Spectrophotometer, SPEC 5000, 335-1000 nmSpectrophotometer, SPEC 5000, 335-1000 nm


The spectrophotometer is an easy to use device for measurement ofthe degree of absorption or transmission of liquid samples in the vis-ible range (335...1000nm).

BenefitsBenefits

The display shows the wavelength, the degree of absorption andtransmission or the concentration respectively , it has RS232 resp. USBinterfaces for connecting to a computer.


Light source: Tungsten, Wavelength range: 335 ... 1000 nm,Wavelength precision: ± 2 nm, Wavelength repeatibility: ± 1 nm,Spectral bandwidth: 10 nm, Cuvette holder: for square cuvettes withexternal dimensions 12 mm x 12 mm, External dimensions (mm): 385x 310 x190, Mains connection: 230 V, 50 Hz, Included: Two square cu-vettes (glass), Data cable for connecting to PC, Two spare fuces (1 A)

35667-9335667-93

Compact photometer PF12Compact photometer PF12

For evaluation of colorimetric tests on extinction measurement usinga factor or value diagram; direct display of concentration

Six-language user guidance via LEDdisplay , Data interface RS 232-With rechargeable batteries for fielduse , The handy filter photometerfills thegap between colorimetric evaluations and laboratory analyses.The detailed manual provides information about the chemical andecological significance of the individual parameters, explains stat-utory limiting values for drinking water, treated sewer sludge, wastewater, etc.

Extent of delivery:Extent of delivery:

Filter photometer , Stabile case , 4 NC batteries including batterycharger , 2 Round cuvettes , Plastic funnels

Manual- Technical data:Manual- Technical data:

Digital display , LCD 9x56 mm, 8-digits , Light source: Tungsten bulb, Filter: Filter wheel with 6 coloured glass filters: 365 nm / 405 nm/ 470nm / 520 nm / 605 nm / 720 nm , Round cuvettes with screwfitting; External diameter: 16 mm- Energy supply: 5-6 V, 4 NC batter-ies with battery charger; sufficient for approx. 1500 measurements ,Data interface: RS 232, Languages: D, E, F, S, I, NL; is setin the works ,Dimensions: length: 195 mm, width:100 mm height: 40 mm , Weight:approx. 0.52 kg incl. batteries

35608-0035608-00

6.5 Measurement instruments6.5 Measurement instruments6.5.11 Photometers, spectroscopes, polarimeters, refractometers


991

Pocket spectroscope 1Pocket spectroscope 1

Function and ApllicationsFunction and Apllications

Simple spectroscope with fixed slit width without wavelength scale.


Slit width: 0.02 mm, Length: 92 mm, Focal length of the objective: 40mm, External diameter: 18 mm, Incl. case.

35580-0035580-00

Pocket spectroscope 4Pocket spectroscope 4


Spectroscope with variable slit widt hand superimposed wavelengthscale.


Slit width: 0...0.8 mm, Focal length of objective: 40 mm, Wavelengthscale: 400...750 nm, Divisions: 10 nm, Dimensions (mm): 55 x 110 x23, Incl. case.

35585-0035585-00

Spectroscope,Kirch.-Bunsen typeSpectroscope,Kirch.-Bunsen type


For qualitative observation and measurement of emission and ab-sorption spectra.


Table unit with fixed optical flint prism, Swiveling observation tele-scope with ocular, Scale tube with 100 division scale, Flint glass prism60°, height: 20 mm with removable cover , Adjustable stand, Totalheight: approx. 230 mm

35645-0035645-00

Spectrometer/goniom. w. vernierSpectrometer/goniom. w. vernier


Spectrometer/ goniometer with double vernier.


With magnifying glasses , 60° glass prism, Illumination device andtelescope

35635-0235635-02

Half-shade polarimeter, 230 V ACHalf-shade polarimeter, 230 V AC


Half-shade polarimeter..


▪ Polarimeter support with built-inlight source and filters▪ polarimeter tube length 100 and 200 mm▪ 2 scales 0-180 degrees▪ division 1 degree▪ vernier reading 0.05degrees with nonius▪ light source sodium lamp 589 nm

Half-shade polarimeter, 230 V ACHalf-shade polarimeter, 230 V AC35906-9335906-93

Polarimeter tube, l=100 mmPolarimeter tube, l=100 mm35906-0235906-02

Polarimeter tube, l=200 mmPolarimeter tube, l=200 mm35906-0335906-03



992

Abbe refractometerAbbe refractometer


Abbe refractometer for measuring the refraction index of liquids and solids with light of 590nm wavelength (sodium D line) and determiningaverage dispersion nC-nF.The refractive index scale also includes an additional scale indicating sugar content from 0 - 95%. The prism and scales can be illuminated bydaylight or by a separate lighting unit.


Measurement range: refractive indices 1.3-1.7 , Sugar content scale: 0-95%, corresponding to refractive indices from 1.33 to 1.53, Precision:0.0003, Prism box with nozzles for connecting thermostats, Protective storage box, Adjustable glass plates, 1 Bottle of immersion liquid(1-bromonaphthalene), Conversion and correction tables, Thermometer, 0-70°C, with removable protective sleeve

35912-0035912-00



993

Speed of Light Meter SetSpeed of Light Meter Set


The complete set to measure the light velocity in air, transparent li-quids and solids.


Consists of 1x Light velocity measuring apparatus, 1 x Retroreflectorwith stem, 1x Power supply 12 V/ 2 A, 1x Slide mount for opticalbench, 1x Optical bench, l = 1800 mm, 1 x Holder for speed of lightmeasuring instrument, 1 x Acrylic glass cylinder with a holder, 1 xTubular cell with a holder

Speed of Light Meter SetSpeed of Light Meter Set11226-8811226-88

Speed of Light MeterSpeed of Light Meter11226-0011226-00

Timer 4-4 with USB-interfaceTimer 4-4 with USB-interface

Function and applications:Function and applications:

Measures up to 4 times simultaneously. Multiple time measuring in-strument for a variety of applications in teaching, wherever times areto be accurately measured. The timer unit has four 4 digit displays.The starting and stopping of the four built-in independent timers isactuated by the opening or closing of electrical circuits, or by meansof light barriers or other TTL signal sources (e.g. a microphone).

Benefits:Benefits:

The 6 different operating modes allow the timer unit to be adjustedto suit almost any experimental requirement. Three different operat-ing modes are suitable for track experiments (distance-time law forfour tracks, measurement of speed at four positions, principles of col-lisions), and in each case all four displays are utilized. Two furtheroperating modes allow, for example, the measurement of the orbit-ing time of a rotary movement and the direct measurement of theduration of a complete swing of a mechanical pendulum. If required,two of the 4-digit displays can be combined to give an 8-digit display(0000.0000 to 9999.9999).

Technical data:Technical data:

▪ Four 4-digit LED displays▪ Digit height: 9 mm

▪ Number of timers: 4▪ Measuring range: 0.000...9.999 s or 0000.0000...9999.9999 s▪ Resolution: 1 ms or 0.1 ms▪ Control (start/ stop): By electrical circuits (contact closure / con-

tact opening or level according to TTL norm)▪ Integrated power supplies for lightbarriers 4 × 5 V, 1.5 A▪ Mains supply: 100...240 V~, 50...60 Hz▪ Power requirement: 18 VA▪ Dimensions (mm): 184 × 140 × 130▪ USB - interface for PC-based experiments

13604-9913604-99

App.for determ.of melting pointApp.for determ.of melting point

Made of DURAN® glass, has a GL 18/8 threaded connector for holdinga thermometer and two inclined side tubes for insertion of meltingpoint tubes.Height: 160 mm

35910-1535910-15

Melting point determination tubes, 100 pcs.Melting point determination tubes, 100 pcs.

39052-0039052-00

Lab thermometer,stem,0..+250CLab thermometer,stem,0..+250C

38064-0038064-00

6.5 Measurement instruments6.5 Measurement instruments6.5.12 General - measurement instruments


994

6 Additional material6 Additional material6.6 Microscopes


995

TESS Biology Set 4 MicroscopyTESS Biology Set 4 Microscopy


To perform 50 microscopy experiments on:

microscopy basics, work techniques, microscopy reagents, cell com-ponents, seed plants, vertibrates, other animals, other plants, fungi,protists, procaryonts


▪ 50 microscopic slides▪ 50 cover glasses▪ 12 snap-cap vials▪ 10 reagent bottles▪ 10 dropping pipettes with bulbs▪ tweezers▪ dissecting needles, pointed and lancet-shaped▪ scissors▪ scalpelholder▪ 10 scalpel blades▪ 200 sterileblood lancets▪ powder spatula▪ 2 glassrods▪ funnel▪ 3 beakers (100 ml, PP)▪ 3beakers (250 ml, PP)▪ beaker (1000 ml,PP)▪ graduated cylinder (100 ml, PP)▪ graduated pipette (10 ml)▪ bulb pipettor(3 valves)▪ 6 petri dishes (PS)▪ testtube holder▪ magnifying glass▪ 120 labels▪ prepared microscopic slides▪ foam insert▪ wooden box

Required AccessoriesRequired Accessories

▪ literature: TESS Biology manual Microscopy incl. CD-ROM(13290-02)

▪ CD-ROM for TESS Microscopy (13290-12)▪ microscope▪ set of chemicals (13290-10)

13290-8813290-88

TESS Biology manual MicroscopyTESS Biology manual Microscopy

SpecificationSpecification

Experimental literature for TESS Biology 50 experiments with studentworksheets and teacher informations.

Range of topicsRange of topics

▪ basics of microscopy▪ worktechniques▪ cell components▪ seed plants and ferns▪ vertibrates▪ invertibrates▪ fungi▪ protists▪ prokaryotes

ContentsContents

Ring file with 200 pages and CD-ROM

▪ with black/white drawings for easy copying▪ teacher's sheets with colored digitalmicroscopy images▪ CD-ROM with master copies of color presentation files (PDF

format) for 47 microscopy topics to print transparencies or toshow directly via avideo beamer and PDF files of student work-sheets andteacher's sheets

13290-0213290-02

Chemicals set for TESS Microscopy (for up to 10Chemicals set for TESS Microscopy (for up to 10workgroups)workgroups)

Function and ApplicationsFunction and ApplicationsChemicals set for TESS Microscopy (for up to 10 workgroups).


▪ Acetic acid 99 %, 250 ml▪ raw alcohol (96% and 70%)▪ isopropanol, absolute, 250 ml▪ rotihistol, 250 ml▪ glycerol, 100 ml▪ Canada balsam (malinol), 50 ml▪ sodium cloride▪ safranine solution 1%, 50 ml▪ Lugol's solution, 100 ml▪ modified azure eosine methylene blue solution (Giemsa), modi-

fied, 50 ml▪ neutral red, 5 g▪ carmineacetic acid solution, 50 ml▪ methyl green, 10 g▪ distilled water, 500 ml

13290-1013290-10



998

Student microscope SFC-100F-LEDStudent microscope SFC-100F-LED


The student microscope model that can not be missing in the basicconfiguration. Budget models - with the all-metal stands for robustschool life very well equipped. High quality DIN objective and precisemechanical components ensure excellent optical properties.


▪ Monocular inclined with prism, rotated by 360° wide-pointereyepiece: 10x

▪ 3-position turret▪ Objective: 4x, 10x, 40x▪ Magnification: 40x, 100x, 400x▪ Condenser n.a. 0.65 with iris diaphragm and filter holder▪ Coarse and fine drives▪ LED lighting installed in the stand with 20 mA, 3.5 V and 70 mW

LED▪ Charger▪ Dust cover

Student microscope SFC-100F-LEDStudent microscope SFC-100F-LED62421-9362421-93

Spare bulb 230V/20W for SFC-100FLSpare bulb 230V/20W for SFC-100FL62417-0162417-01

Halogen lamp 12V/10W,spare M100Halogen lamp 12V/10W,spare M10062170-1362170-13

Replacement-LED-Lamp for Motic-Series SFC/F11/18/ 28,Replacement-LED-Lamp for Motic-Series SFC/F11/18/ 28,62170-1662170-16

Objective 60x,N.A. 0.85, achrom.Objective 60x,N.A. 0.85, achrom.62170-0862170-08

Objektive 100x,N.A. 1.25Objektive 100x,N.A. 1.2562170-0962170-09

Eyepiece, Huygenian 15x,AccessoryEyepiece, Huygenian 15x,Accessory62448-0062448-00

Micrometer ocular WF 10x/18mmMicrometer ocular WF 10x/18mm62170-0562170-05

Mechanical stage f.SFC-100 a.F-11Mechanical stage f.SFC-100 a.F-1162416-0162416-01

CCD camerasCCD cameras

Function and ApplicationsFunction and ApplicationsDigital cameras to be placed on microscope eyepieces of any diameter.The four included eyepiece adapter for eyepieces with a diameter of28 mm, 30 mm, 34 mm and 35 mm can be adapted to any eyepieces,even if they differ from the mentioned diameter. Nor can you connectthe camera to microscopes, which have a photo tube with C-mount

adapter plug.Delivered with a focusable macro lens which allows that the cameracan be used without a microscope to image any object on the PC mon-itor.

BenefitsBenefits

▪ With the included image editing software for PC and MacintoshOSX platforms, the images can be measured and analyzed. It alsoprovides a variety of other tools for teachers, students and re-searchers.

▪ Equipped with all necessary accessories that fit cameras on vir-tually any microscope eyepiece and thus allows you to turn anymicroscope into a digital microscope.


▪ USB-cable with 16 mm CCD Clip▪ 3 lux light sensitivity▪ Ocularadapter for all microscopes (Oculars with 28mm, 30mm,

34mm and 35mm Diameter)▪ Calibration slides▪ Focusing lens for webcam use▪ Macrotubus to view objects without a microscope▪ Software Motic Image Plus 2.0, on Windows and MacOS X running

CCD camera Moticam 352 for PC, 0.3 megapixelsCCD camera Moticam 352 for PC, 0.3 megapixels88037-0188037-01

CCD camera Moticam 1000 for PC, 1.3 megapixelsCCD camera Moticam 1000 for PC, 1.3 megapixels88037-0288037-02

Stereo microscope ST-30C-6LED,2x/4xStereo microscope ST-30C-6LED,2x/4x

Function and ApplicationsFunction and ApplicationsStereomicroscope. The ST-30 series is a unique transition to morepowerful stereo microscopy. To provide proper optical alignment wasa high value, and thereby ensures precision mechanics comfortablelong term use.


▪ Binocular inclined tube▪ Stereohead rotatable through 360°▪ Stable stand with stage plate and 2 stage clips▪ Height-adjustable binocular eyepiece unit▪ Focussing by means of two coaxial focussing knobs with sliding

clutch▪ One pair of interchangeable wide-field eyepieces WF10×/20 with

eyecups▪ Rotatable nosepiece with 2 aligned pairs of objectives 2×/4× or

1×/3× for rapid magnification change▪ Magnification:20×/40× or 10×/30×▪ 5 LEDs for incident light and 1 LED for transmitted light▪ Rechargeable so it can be used independent from a network▪ Connection voltage 230 V,50...60Hz▪ Complete with dust cover and battery charger

62466-9362466-93



999



1000

nal


Correction:

Contrary to our expectations, the procedure for type approval of our X-ray apparatus „PHYWE X-ray XR 4.0 expert unit, Basic set“, carried out by the Bundesamt für Strahlenschutz (BFS) [Federal Office for Radiation Protection], is still not completed. The patent for our S-Lock safety system has been applied for, however, it is still pending.We hereby put right statements that say otherwise on various pages in this catalogue.

Furthermore, we clarify that we are considered to be “one” of the world’s leading suppliers of integrated overall solutions for the area of scientific technical training in schools, universities and educational institutions. We correct our statement in this catalogue insofar as being “the” world’s leading supplier.

Göttingen, den 15.09.2011

PHYWE Systeme GmbH & Co. KG

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PHYWE Systeme GmbH & Co. KG

Robert-Bosch-Breite 10

D-37079 Göttingen

Tel. +49 (0) 551 604 - 0

Fax +49 (0) 551 604 - 107

[email protected]

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Worldclass solutions for better education:

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