P71993 Kapillar englisch - wenk-labtec.com · With this viscometer type, the ... to note that the...

Cap

illar

y-Vi

scom

eter

s

2

Contents

Page

Capillary viscometry 3 – 10

Ubbelohde viscometers, normal form 11 – 12

Ubbelohde viscometers, with additional tube and threads 13

Ubbelohde viscometers, with TC sensors 14

Micro-Ubbelohde viscometers 15

Viscometers for dilution series 15

Cannon-Fenske viscometers 16 – 17

Ostwald viscometers 18

Accessories 19 – 25

Capillary viscometry is the most precisemethod used to determine the kinematicviscosity of liquids with Newtonian flow behavior. For this reason, many proceduresuse the options of this method, unsur-passed in precision, at international,national, and plant operating levels. To fullyexploit these options, the instrumentsbeing used must meet high quality require-ments.

Which viscometers are available ?

The capillary viscometers most fre-quently used are the three-armed viscome-ters according to Ubbelohde and their variants. With this viscometer type, thesample volume must not be precisely cali-brated. The liquid volume reaching themeasuring point including the resultingaverage pressure head is automatically regulated by means of the suspended bulblevel which forms at the lower end of thecapillaries. Ubbelohde viscometers areavailable for all practical applications:

d for absolute and relative measurementsd for manual and automatic detection of

meniscus passaged for normal and opaque samplesd for manual and automatic rinsingd in macro and micro sizes.

The two-legged viscometers, e.g. theOstwald viscometers, continue to be usedin classic methods although the level of automation with applications of these types of viscometers is limited. In addition,there are a number of viscometer typesthat are only of specific importance in thefield of routine and research work in eachinstance.

Each calibrated viscometer has a con-secutive series number which is only awarded once by Schott. Accordingly, individual viscometers can be clearly identi-fied even after many years.

Technical characteristics of glass vis-cometers

Precision capillaries for viscometers made of borosilicate glass or other high-quality glass guarantee constant quality atthe highest level of international standards.

The capillaries are manufactured accord-ing to methods that guarantee a consistentinner diameter. The outlet of the capillariesis adapted in its geometric form to thetheoretical Hagenbach correction factor inaccordance with DIN standards.

The interaction of these technical glassproperties ensure uniform flow-through times which then form the basis for preciseresults.

3

Capillary viscometry

Viscosity is a "classic" characteristicquantity for liquids. The result provided during application of capillary viscometry isthe kinematic viscosity which is measuredin the unit of mm2/s (formerly centistokes,cSt). Since viscosity is temperature-depen-dent, the measurement temperature mustbe correctly adhered to and mentioned inthe test results.

The absolute kinematic viscosity is cal-culated by means of simple multiplicationof the measured flow-through time in se-conds with the constant K valid for the vis-cometer. At the same time, it is importantto note that the constants for manual andfor automatic measurements are basicallydifferent. The ring marks and the constantK refer to manual measurements; for measurements with Schott measuringstands, a correction factor must be takeninto account. The flow-through time mustbe reduced by the Hagenbach correctionfactor. The Hagenbach correction factor,however, only achieves an amount worthmentioning with shorter flow-through timesand/or smaller constants.

The Micro-Ubbelohde viscometerswhich are being used more frequently in recent times have a particularly small Hagenbach correction factor which alsocomplies with the theoretical calculation inaccordance with DIN standards even forflow-through times of 10 s. From the abso-lute viscosity, classic data, such as theSUS (Saybolt Universal Viscosity), SF (Saybolt Furol Viscosity) and E (Engler Degree), for instance, can be calculated directly with an equation or with the help ofa calculation chart.

The relative kinematic viscosity is thequotient of the viscosities of a solution andthe pure solvent. This viscosity is extremelyimportant in the food industry and espe-cially for the evaluation of polymers. Fromthe time when Staudinger discovered therelationships between the average chainlength and the viscosity, polymers have been evaluated to an increasing extentwith the help of viscosity determination.From the relative viscosity, other character-istic quantities are derived mathematically,such as the specific viscosity and the inherent viscosity as well as the viscositynumber J and the K value.

4

Which evaluation options are available incapillary viscometry ?

The constant K for the determination ofthe absolute kinematic viscosity is deter-mined with extreme care by means ofcomparative measurements with normalviscometers whose constants were deter-mined at the Federal German Physical-Technical Institute (PTB). Accordingly, forUbbelohde viscometers of Type 501.. toconstant K = 10 mm2/s2 from the normalproduction, a maximum measuring uncer-tainty of 0.60 % related to national stand-ards is ensured. The measuring uncertaintycan be reduced further by means of a second calibration. This renewed measure-ment can be confirmed for Ubbelohde viscometers with a quality test certificate inaccordance with DIN 55 350 Part 18. Theconfidence level (probability level) for thisdata is 95 %.

– In practice, the repeating accuracy isthe most important criterion in most cases. As repeating accuracy, values of < 0.1 % can be achieved, provided thatthe influence quantities described beloware taken into account.

– The constancy of temperature of thethermostatic bath being used is, in addi-tion to the correctness of the constant,the most important influence quantity inthe field of viscometry. As a rule-of-thumb, a deviation of mT = 0.1 K results

in a measured value variation of 0.2...1%. Thermostats made by Schottof the type series CT 1650/. provide aconstancy of temperature of mT = 0.02... 0.05 K, depending on the temperatu-re range and fluctuations of ambientconditions. The required thermometersmust be capable of providing readingsof ± 0.01 K and must be officially cali-brated.

– Following the sample filling procedure,the tempering time must amount to atleast 15 minutes for manual measure-ments. For measurements with automa-tic viscosity measuring instruments,shorter times can be selected becausethe instruments ensure thorough mixingdue to constant pumping during thetempering period. The outlier test for automatic measurements makes it ea-sier to recognise whether or not the firstmeasured value of a series was alreadydetermined under correct temperatureconditions.

– The actual time measurement is per-formed with a stopwatch or with an automatic viscosity measuring instru-ment. Normally, the time measurementincludes a very small degree of mea-suring uncertainty. Regular inspection of the time measuring instruments, however, is absolutely required.

5

Influence quantities in viscometry andhow can they be influenced ?

Ubbelohde viscometers (DIN)for transparent liquids, viscosity range from0.35 to 60,000 mm2/s, viscometers withthe smallest degree of measuring uncer-tainty, for precision measurements, easy tofill up.

Ubbelohde viscometers (ASTM)for untransparent liquids, viscosity rangefrom 0.3 to 60,000 mm2/s, for precisionmeasurements, easy to fill up.

Dilution viscometersfor transparent liquids, viscosity range from0.3 to 100 mm2/s, for dilution series, onlyfor automatic measurements, only for poly-mer applications.

Micro-Ubbelohde viscometersfor transparent liquids, minimum samplequantity, viscosity range from 0.3 to 800mm2/s, measuring time ≥ 30 s, easy to fillup.

TC viscometersspecially designed for untransparent oils,viscosity range from 0.5 to 30,000 mm2/s,only for automatic measurements that pos-sess one or several of the following pro-perties: untransparent, black, electricalconductive, aqueous.

Ostwald viscometersviscosity range from 0.3 to 10 mm2/s, onlyfor manual measurements, defined fillingvolume (formerly used for the determina-tion of molecular weight).

Micro-Ostwald viscometersfor transparent liquids, for foaming liquids,viscosity range from 0.4 to 800 mm2/s, minimum sample quantity, short measuringtime, defined filling volume.

Cannon-Fenske routine viscometersfor transparent liquids, viscosity range from0.4 to 20,000 mm2/s.

Cannon-Fenske reverse flow viscome-tersspecially designed for untransparent liquids, viscosity range from 0.4 to 20,000mm2/s, only for manual measurements, defined filling volume.

BS/IP U-tube reverse flow viscometersspecially designed for transparent or un-transparent liquids, viscosity range from6,000 to 300,000 mm2/s, only for manualmeasurements, defined filling volume.

6

Viscometers and their range of use

7

Selection of glass capillary viscometers+ + use preferably 1) to 30,000 mm2/s+ highly suitable 2) above 30,000 mm2/su less suitable– unsuitable

Measurement substance property

Transparent liquidsmanual measurement + + + + – + + + u u

Transparent liquidsautomatic measurement + + + + + – + + – –

Opaque liquidsmanual measurement – – – – – – + +2)

Opaque liquidsautomatic measurement – – + +1) – – – – –

Foaming liquids u u u + + + u u

Liquid mixture withhighly volatile components u u u + + + u u

Minimum measurement substanceand/or rinsing agent quantities – + + – – + – – –

High-temperature or low-temperature measurements + + + u u u u u

Viscometer type Ubbelo

hde

Micro U

bbelo

hde

TC-U

bbelo

hde

Ostwald

Micro-

Ostwald

Canno

n-

Fens

ke-R

outin

e

Canno

n-Fe

nske

-

revers

e flow

BS/IP-U

tube

revers

e flow

Influence quantity

Specified measuring uncertaintyof a PTB-tested normal oil – 0.3 … 0.5(to 10 000 mm2/s)

Measuring uncertainty of Ubbelohdeviscometer constants from running 0.6 … 0.75 0.6 … 0.75production (K < 10 mm2/s2)

Measuring uncertainty of Ubbelohdeviscometer constants with manufacturer’s 0.45 0.45inspection certificate (K < 10 mm2/s2)

Temperature variation∆ T = 0.01 K 0.03 … 0.1 0.03 … 0.1∆ T = 0.1 K 0.3 … 1 0.3 … 1

Stopwatch, standard 0.02 0.01stopwatch error, individual 0.2 0.1

Hagenbach correction for K = 0.01Absolute error ≤ 1.2 ≤ 0.2residual error following correction 0.2 0.03

Inclination error (inclined slope)1° 0.02 0.023° 0.14 0.14

Surface tension> 30 mN/m 0.1 … 0.2 0.1 … 0.2

Thermal expansion of glass∆ T = 80 K 0.03 0.03

Acceleration of fall, changefrom 40° to 50° latitude north 0.1 0.1

1000 m change in altitude 0.02 0.02

Radiation heat (insolation) ≥ 2 ≥ 2

Repairs 0 … 5 0 … 5

Soiling, particles ≥ 1 ≥ 1

Alkaline cleaning agents ≥ 2 ≥ 2

8

Overview table for estimation of the measuring uncertaintyfor measurements of absolute viscosity using Ubbelohde viscometers

Possible influence of viscosity determination(data in percent)

for a flow-through for a flow-throughtime of 100 s time of 200 s

* confidence level of data = 95%

Recommendations for companies thathave introduced a quality assurance system in accordance with the standardsDIN EN ISO 9000 ff.

In this quality assurance system, an inspection of the measuring equipment isplanned. The intervals and required accu-racy can be defined by each company according to its own requirements. Thestandard DIN/ISO 100 12, Part 1 serves asa guideline in this matter.

We recommend regular inspection ofthe viscometers in defined intervals.

Inspection of viscometer constants

1. Calibration using comparative meas-urements with reference measuring stand-ards

Comparative measurements must beperformed with a viscometer (referencemeasuring standard) which was tested atthe PTB (Federal German Physical-Techni-cal Institute) and provided with a constant.During this comparative measurement, theviscometer to be inspected and the PTB-tested viscometer were placed simulta-neously in the same thermostatic bath. Thetest liquid tested, the viscosity of whichmust not be known exactly, is filled intoboth viscometers, tempered and the flow-through time then measured.

The constants of the viscometers to beinspected are then calculated according tothe equation (see below).

Within the quality assurance system inaccordance with DIN EN ISO 9000 ff., retraceability of the measuring equipmentto national measuring standards is deman-ded. This form of retraceability can beachieved by inspecting the comparativeviscometers (reference measuring stand-ards) at regular intervals at the PTB. The time intervals are defined according to thespecifications made in the quality assuran-ce system of the user.

2. Calibration of the capillary viscometerwith normal oils of the PTB

During this calibration, a normal oil fromthe PTB with known viscosity is used as areference measuring standard. The measu-rement is performed by means of flow-through measurement of the PTB normaloil in the viscometer to be inspected in atemperature bath, the temperature ofwhich must correspond precisely to thetest temperature of the PTB. In this case, itis extremely important to make sure thatthe temperature is absolutely correct. Incase of temperature variation, this will always result in a constant for the viscome-ter that deviates from the constant applied.A temperature variation of 0.01 K, for instance, will result in a measuring error ofup to 0.01%.

9

Viscometers within quality assurance systems

K PTB · t PTBK = ————————

t

K = constant of the inspected viscometer

K PTB = constant of the viscometerinspected at the PTB

t PTB = flow-through time of the viscometer inspected at the PTB (adjusted by the Hagenbach-correction factor)

t = flow-through time of the inspectedviscometer (adjusted by theHagenbach correction factor)

3. Inspection by Schott-Geräte withquality certificates in accordance withDIN 55 350 (Part 18, 4.2.2)

The inspection at Schott-Geräte is carried out by means of comparative mea-surements using viscometers as referencemeasuring standards that were tested atthe PTB (corresponds to Item 1).

Information on the stability of visco-meter constants

Each inspection (even with a certificate)can guarantee the technical measuring di-rection only for a limited period of time. Theconstants of viscometers made of theborosilicate glass DURAN®, however, canremain unchanged for long periods of timeif the viscometers are kept away from altered influences. Especially extreme

changes can be expected, for instance,during the use of liquids that attack glassor during glass-blowing repairs (even forapparently insignificant repairs).

Liquids whose components adhere tothe glass wall also cause errors. In suchcases, regular cleaning is required wherebythe corrosive action cleaning agent on theglass must be eliminated.

For this reason, we recommend that theuser should write up a special processinginstructions for all important measurementsand include them in his quality assurancemanual in accordance with DIN EN ISO9000 ff. In all cases the user is responsiblefor the correctness of his measuring andtesting equipment and is not released fromhis responsibility for quality (cp. DIN 55 350, Part 18).

10

Relative uncertainty of the numerical value for the specified constant based on aconfidence level (probability level) of 95%

Viscometer type Viscometers from running production Viscometers withavailable on request with manufacturer’s inspectionmanufacturer’s certificate in accor- in accordance withdance with DIN 55 350, Part 18 DIN 55 350, Part 18

501.. Reference constant:K ≤ 10 mm2/s2: 0.65 % 0.45 %K > 10 mm2/s2: 0.8 % 0.60 %

525.. Reference constant:532.. K ≤ 10 mm2/s2: 0.65 % 0.5 %

K > 10 mm2/s2: 0.8 % 0.65 %

516.. all sizes: 0.8 % 0.65 %517..536..537..

541.. all sizes: 1.2 % 0.9 %542..543..544..545..547..548..549..

511.. all sizes: 1.2 % –513..520..

Viscometers with suspended ball levelfor determination of absolute and relativekinematic viscosity of liquids with New-tonian flow behaviour. The calibrated visco-meters are delivered with manufacturer’scertificate in accordance with DIN 55 350,Part 18.

All viscometers are provided with ringmarks. This ensures that viscometers forautomatic measurements can also bechecked by means of manual measure-ments.

The recommended minimum flow-through time is 200 s.

11

Ubbelohde viscometers, normal form

Ubbelohde viscometers (DIN)– in accordance with DIN 51 562, Part 1,

ISO/DIS 3105 (BS-IP-SL)– filling quantity: 15 ... 20 ml– overall length: approx. 290 mm

calibrated, withconstant formanualmeasurements

calibrated withconstant, for manual measurements,automatic measure-ment with standAVS/SK-HV

Capillary No.

acc. DIN acc. ISOType No. Type No.

Capillaryø i W 0,01

[mm]

ConstantK

(approx.)

Measuring range[mm2/s](approx.)

501 00501 03501 01501 10501 13501 11501 20501 23501 21501 30501 33501 31501 40

–––

––––––––––––

502 43502 41502 50

00c0aIIcIaIIIIcIIaIIIIIIcIIIaIVIVcIVa–

–––IIa–IIIIa–IIIIIIa–IVIVa–V

0.360.470.530.630.840.951.131.501.692.012.653.003.604.705.346.30

0.0010.0030.0050.010.030.050.10.30.5135

103050

100

0.3 … 10.5 … 30.8 … 51.2 … 103 … 305 … 50

10 … 10030 … 30050 … 500

100 … 1000300 … 3000500 … 5000

1000 … 100003000 … 300006000 … 30000

über 10000

n = K · tK = n

tt = n

n = kinematic viscosity in mm2/sK = constant [mm2/s2]t = flow-through time in s

not calibrated,without constant,for determinationof relativeviscosity

calibrated,with constantfor automaticmeasurements

Capillary No.

acc. DIN acc. ISOType No.Type No.

Capillaryø i W 0,01

[mm]

ConstantK

(approx.)


–530 03530 01530 10530 13

–530 20530 23

–530 30530 33

–530 40

532 00532 03532 01532 10532 13532 11532 20532 23532 21532 30532 33532 31532 40

00c0aIIcIaIIIIcIIaIIIIIIcIIIaIV

–––IIa–IIIIa–IIIIIIa–IV

0.360.470.530.630.840.951.131.501.692.012.653.003.60

0.0010.0030.0050.010.030.050.10.30.5135

10

n = K · tK = n

tt = n

K

n = kinematic viscosity in mm2/sK = constant [mm2/s2]t = flow-through time in s

0.3 … 10.5 … 30.8 … 51.2 … 103 … 305 … 50

10 … 10030 … 30050 … 500

100 … 1000300 … 3000500 … 5000

1000 … 10000

Ubbelohde viscometers (ASTM)

– in accordance with ISO/DIS 3105, ASTM D 2515, ASTM D 446

– filling quantity: 15 ... 20 ml– overall length: approx. 285 mm

12

calibrated, withconstant formanualmeasurements


Type No. Type No. CapillaryNo.

525 00525 03525 01525 10525 13525 20525 23525 30525 33525 40525 43

526 00526 03526 01526 10526 13526 20526 23526 30526 33526 40526 43

00c0bIIcIIIIcIIIIIIcIVIVc

Capillaryø i

[mm]

0.240.360.460.580.781.031.361.832.433.274.32

ConstantK

(approx.)

0.0010.0030.0050.010.030.10.313

1030


0.35… 10.6 … 31 , … 52 , … 106 , … 30

20 , … 10060 , … 300

200 , … 1000600 , … 3000

2000 , … 100006000 , … 30000

Viscometers with suspended ball levelfor determination of absolute or relative kinematic viscosity. These viscometers arepreferably used for automatic measure-ments when an AVS 24 or AVS 26 automa-tic viscometer cleaner is used simulta-neously. The additional filling and cleaningtube and the glass thread ensure safe ope-

rational use. The calibrated viscometersare delivered with manufacturer’s certificatein accordance with DIN 55 350, Part 18.

The ring marks that are also present ser-ve as auxiliary marks in case the viscome-ters must be checked by means of manualmeasurements.

13

Ubbelohde viscometers, with additional tube andthreads

Ubbelohde viscometers (DIN)– in accordance with ISO/DIS 3105,

DIN 51 562, Part 1, BS 188, NFT 60-100– filling quantity: 18 ... 22 ml– overall length: approx. 290 mm

calibrated, withconstant forautomaticmeasurements

Type No.acc. DIN acc. ISO

Capillary No.

541 03541 01541 10541 13541 20541 23541 30541 33541 40

0c0aIIcIIIIcIIIIIIcIV

––IIaIIIIaIIIIIIaIV

Capillaryø i

[mm]

0.470.530.630.841.131.502.012.653.60

ConstantK

(approx.)

0.0030.0050.010.030.10.313

10


0.5 … 30.8 … 51.2 … 103 , … 30

10 , … 10030 , … 300

100 , … 1000300 , … 3000

1000 , … 6000

Ubbelohde viscometers (ASTM)– the technical measurement characteris-

tics are in accordance with ISO/DIS 3105, ASTM D 2515, ASTM D 446


calibrated, withconstant forautomaticmeasurements

Type No. Capillary No.

545 00545 03545 01545 10545 13545 20545 23545 30545 33545 40545 43

00c0bIIcIIIIcIIIIIIcIVIVc

Capillaryø i

[mm]

0.240.360.460.580.781.031.361.832.433.274.32

ConstantK

(approx.)

0.0010.0030.0050.010.030.10.313

1030


0.35 … 10.6 … 31.8 … 52.2 … 106 , … 30

20 , … 10060 , … 300

200 , … 1000600 , … 3000

2000 , …100006000 , …30000

Viscometers with suspended ball levelfor determination of absolute and relativekinematic viscosity of liquids with New-tonian flow behaviour. The measuring levels are marked by TC sensors. Themeniscus passage is detected due to thedifferent conductivity of the liquid phaseand the gas phase. A measurement standof the type series AVS/S is not required.

TC viscometers can be used to deter-mine the kinematic viscosity of all liquidswith Newtonian flow behaviour. They are

especially suitable for liquids that cannotbe detected with other systems: untrans-parent and/or black and/or electric con-ductive measuring samples.

TC viscometers are manufactured fromtechnical glass types with an expansioncoefficient of a = approx. 9 • 10–6 .

Due to the electric properties of TC sen-sors, it is important to make that a type isselected that is suitable for the required application temperature.

14

Ubbelohde viscometers with TC sensors

TC viscometers with additional fillingand cleaning tube and with glassthread– the technical measurement characteri-

stics are in accordance with DIN 51562, Part 1, ISO/DIS 3105 (BS-IP-SL)

– for use in combination with an automa-tic viscosity measuring instrument andan AVS 24 or AVS 26 automatic visco-meter cleaner


calibrated,with constant for automatic measurements

Capillary No.

Type No.

+ 10 … + 80°C

Type No.

– 40 … + 30°C

Type No.

+ 70 … + 150°C

Capillaryø i

[mm]

ConstantK

(approx.)


542 03 -542 10542 13 -542 20542 23542 21542 30542 33542 31542 40542 43542 41

––

543 10543 13

–543 20543 23

–543 30543 33

–543 40543 43543 41

––

544 10544 13

–544 20544 23

–544 30544 33

–544 40544 43

–

0c0aIIcIaIIIIcIIaIIIIIIcIIIaIVIVcIVa

0.470.530.640.840.951.151.511.692.052.703.003.704.905.34

0.0030.0050.010.030.050.10.30.5135

103050

0.5 … 30.8 … 51.2 … 103 … 305 … 50

10 … 10030 … 30050 … 500

100 … 1000300 … 3000500 … 5000

1000 … 100003000 … 200005000 … 30000

Viscometers with suspended ball levelfor determination of absolute and relativekinematic viscosity of liquids with New-tonian flow behaviour. Due to their design,these viscometers are especially suitablefor measurement of small liquid quantitiesand for particularly short running times.

All viscometers are provided with ringmarks. This ensures that viscometers forautomatic measurements can also bechecked by means of manual measure-ments.

Micro-Ubbelohde viscometers (DIN)The calibrated viscometers are deliveredwith manufacturer’s certificate in accor-dance with DIN 55 350, Part 18. For measurements with automatic viscosi-ty measuring instruments, another con-stant is valid. This constant is determinedby multiplication of the constant K with thecorrection factor F.– in accordance with DIN 51 562, Part 2– filling quantity: 3 ... 4 ml– overall length: approx. 290 mm

Viscometers with suspended ball level designed according to the principle of theUbbelohde viscometers for determinationof the limit viscosity number of polymers.The limit viscosity number is determined

automatically in combination with viscositymeasuring instruments and piston burette,type AVS 20, made by Schott.– filling quantity: 15 ... 75 ml– overall length: approx. 290 mm

15

Micro-Ubbelohde viscometersViscometers for dilution series

Viscometers for dilution series

calibrated,with constant formanualmeasurements

calibrated,with constant forautomaticmeasurements


Capillary No.Type No. Type No. Type No.

Capillaryø i

[mm]

ConstantK

(approx.)


536 10536 13536 20536 23536 30

537 10537 13537 20537 23537 30

538 10538 13538 20538 23538 30

M IM IcM IIM IIcM III

0.400.530.700.951.26

0.010.030.10.31

0.4 … 61.2 … 184 … 60

12 … 18040 … 800

not calibrated,for automaticmeasurements


531 00531 03531 01531 10531 13531 20

00c0aIIcII

Capillaryø i

[mm]

0.360.470.530.640.841.15

ConstantK

(approx.)

0.0010.0030.0050.010.030.1


0.35 … 0.60.5 … 20.8 … 31.2 … 63 … 20

10 … 60

Cannon-Fenske routine viscometersComply with standards ISO/DIS 3105,ASTM D 2515, BS 188 with respect totechnical measuring specifications.– are suitable for all Newtonian liquids

with a viscosity of 0.35 ... 20,000mm2/s.

– the present design has, as a supple-ment to the standard, a deepening inthe lower bend. Accordingly, these viscometers can also be used for automatic measurements.

– filling quantity: approx. 7 ... 10 ml– overall length: approx. 245 mm

Cannon-Fenske reverse flow viscometersComply with standards ISO/DIS 3105,ASTM D 2515, ASTM D 446,

NF T 60 - 100 with respect to technicalmeasuring specifications.– filling quantity: approx. 12 ml– overall length: approx. 295 mm

16

Cannon-Fenske viscometers

for manualmesurement

calibrated,with ring mark, with constant

for automaticmeasurement

Type No. Type No. CapillaryNo.

513 00513 03513 01513 10513 13513 20513 23513 21513 30513 33513 40513 43

520 00520 03520 01520 10520 13520 20520 23520 21520 30520 33520 40520 43

255075

100150200300350400450500600

Capillaryø i

[mm]

0.300.440.540.630.781.011.271.521.922.353.204.20

ConstantK

(approx.)

0.0020.0040.0080.0150.0350.10.250.51.22.58

20


0.4 … 1.60.8 … 3.21.6 … 6.43 … 157 … 35

20 … 10050 … 200

100 … 500240 … 1200500 … 2500

1600 … 80004000 … 20000

calibrated, with3 ring marks,with 2 constants,only for manualmeasurement


511 00511 03511 01511 10511 13511 20511 23511 21511 30511 33511 40511 43

255075

100150200300350400450500600

Capillaryø i

[mm]

0.310.420.540.630.781.021.261.481.882.203.104.00

ConstantK

(approx.)

0.0020.0040.0080.0150.0350.10.250.51.22.58

20


0.4 … 1.60.8 … 3.21.6 … 6.43 … 157 … 35

20 … 10050 … 200

100 … 500240 … 1200500 … 2500

1600 … 80004000 … 20000

Cannon-Fenske routine viscometersComply with standards ISO/DIS 3105,ASTM D 2515, BS 188 with respect totechnical measuring specifications. Theseviscometers are preferably used for auto-matic measurements when an AVS 24 orAVS 26 automatic viscometer cleaner isused simultaneously. The additional fillingand cleaning tube and the glass thread

ensure safe operational use. The calibratedviscometers are delivered with manufac-turer’s certificate in accordance with DIN 55 350, Part 18. – are suitable for all Newtonian liquids

with a viscosity of 0.35 ... 20,000mm2/s.

– filling quantity: approx. 7 ... 12 ml– overall length: approx. 245 mm

17

calibrated,with ring marks,with constant,for automaticmeasurement


546 00546 03546 01546 10546 13546 20546 23546 21546 30546 33546 40546 43

255075

100150200300350400450500600

Capillaryø i

[mm]

0.300.440.540.630.781.011.271.521.922.353.204.20

ConstantK

(approx.)

0.0020.0040.0080.0150.0350.10.250.51.22.58

20


0.4 … 1.60.8 … 3.21.6 … 6.43 … 157 … 35

20 … 10050 … 200

100 … 500240 … 1200500 … 2500

1600 … 80004000 … 20000

Ostwald viscometers– filling quantity: 3 ml– overall length: approx. 220 mm

Micro-Ostwald viscometersare suitable for measurements of small liquid quantities even with extreme forma-tion of foam.

– filling quantity: 2 ml– overall length: approx. 290 mm

18

Ostwald viscometers

calibrated, with ring marks,without constant,for manualmeasurement

Type No.

509 03509 04509 05509 06509 07

0.30.40.50.60.7

Transit timefor water

approx. [s]

Capillaryø i

[mm]

25075301510

ConstantK

(approx.)

0.0040.010.030.070.1

For use from[mm2/s](approx.)

0.312.55.5

10

calibrated,with ring marks,with constant,for manualmeasurement

calibrated,with ring marks,with constantfor automaticmeasurement

not calibrated,with ring marks,without constant

Capillary No.Type No. Type No. Type No.

Capillaryø i

[mm]

ConstantK

(approx.)


516 10516 13516 20516 23516 30

517 10517 13517 20517 23517 30

518 10518 13518 20518 23518 30

IIcIIIIcIII

0.430.600.771.001.36

0.010.030.10.31

0.4 … 61.2 … 184 … 60

12 … 18040 … 800

Brackets and standsAll brackets and stands are designed toensure that the viscometers are held verti-cally. They also protect the viscometersfrom breakage. The maximum deviation is< 1°. In application in conjunction withSchott and other commercially available

see-through thermostats the viscometerscan only be used with the appropriatestand or bracket.For DIN Ubbelohde viscometers that areused as reference measuring standard,specifically modified bracket (VZ 5840)must be used.

19

Accessories

Brackets made of VA steelsuitable for use with all Ubbelohde viscometersfor manual and automatic measurements

Type No.

053 92

VZ 5840 (accessory for reference measuring standard)

suitable for use with all reverse flow viscometers(Cannon-Fenske and BS/IP U-tube viscometers)for manual and automatic measurements(not illustrated)

Type No.

053 96

suitable for use with Micro-Ostwald viscometersfor manual and automatic measurements

Type No.

053 97

053 92

053 97

suitable for use with Ubbelohde viscometers with TC sensors

Type No.

053 93

053 93

20

Accessories

Control thermometers

Type No. Measuring range °C Graduation °C

VZ 2801 – 5 to + 38 1/10

VZ 2802 + 33 to + 67 1/10

VZ 2803 + 66 to + 102 1/10

VZ 2804 + 95 to + 152 1/10

VZ 2901 + 20 to + 25 1/100

VZ 2907 + 22 to + 27 1/100

VZ 2904 + 35 to + 40 1/100

VZ 2908 + 37 to + 42 1/100

VZ 2905 + 45 to + 50 1/100

VZ 2906 + 97 to + 101 1/100

VZ 2909 + 132 to + 137 1/100

Type No.

VZ 5840

Brackets for reference measuringstandard

DIN Ubbelohde viscometers which areused as testing standard should be storedin a specially modified viscometer bracket

(053 92) according to official inspection /calibration authorities. The extension set for the test standard (VZ 5840) guarantees vertical slope with amaximum deviation of < 1° and the cen-tered positioning of the capillaries.

VZ 5840

Stands made of PTFEsuitable for use with Cannon-Fenske routine viscometersfor automatic measurements only(not illustrated)

Type no.

065 99

21

Accessories

Type No.

VZ 5625

ViscoPump

The ViscoPump VZ 5625 used in manualmeasurements and semi-automatic measurements to suck and pump up solutions:– filling of viscometers– rinsing with the next sample– sucking up between manual measure-

ments– emptying of viscometers without

removing them from the thermostaticbath

Since the materials used and the connec-tions of the ViscoPump VZ 5625 are madeof PTFE or stainless steel, the pump is suitable for use with aggressive mediums.

The range of use for semi-automatic pro-cessing of samples, e.g. with a viscositymeasuring instrument AVS 360 is possibleup to a viscosity of 30,000 mm2/s. For semi-automatic processing work, thePTFE hose combination with stand (see illustration) and the waste bottle, typeno. VZ 5624, are used.

Polyamide bracketfor use with Cannon-Fenske routine viscometers,Cannon-Fenske reverse flow viscometersand all Ostwald viscometersfor manual measurements only

Type No.

064 99

PTFE bracketfor use with Cannon-Fenske routine viscometers,for automatic measurements only(not illustrated)

Type No.

065 99

VZ 5625

064 99

22

Accessories

Temperature stabilization jackets

In the absence of a see-through ther-mostat the temperature of capillary vis-cometers can be stabilized in this type ofjacket using circulation thermostats in thetemperature range 0 to 180°C. The shapeof the jacket and the number of holes in the support plate depend upon the type ofviscometer being used.

The support plate has been designed to facilitate changing the viscometer whenrequired. An additional hole is provided in the support plate so that a control ther-mometer can be fitted. A quick-action seal simplifies changing viscometers.

Temperature stabilization jacket with support platefor Ubbelohde viscometers

Type No. Item No.

577 00 Complete, without viscometer

Component parts

577 01 1 Temperature stabilization jacket, straight238 00 2 Support plate with 4 silicone rings (d = 4, 6, 8 and 10 mm)225 34 3 Silicone O-ring, ND 60072 34 4 Quick-action seal, ND 60

Temperature stabilization jacket with support platefor Cannon-Fenske routine viscometers

Type No. Item No.


Component parts

578 01 1 Temperature stabilization jacked, angled239 00 2 Support plate with 3 silicone rings (d = 6, 8 and 10 mm)225 34 3 Silicone O-ring, ND 60072 34 4 Quick-action seal, ND 60

2

3

4

1

Thermo-meter

2

3

4

1

Thermo-meter

23

Accessories

Temperature stabilization jacket with support platefor Cannon-Fenske reverse flow viscometersand Ostwald viscometers

Type No. Item No.


Component parts

577 01 1 Temperature stabilization jacket, straight239 00 2 Support plate with 3 silicone rings (d = 6, 8 and 10 mm)225 34 3 Silicone O-ring, ND 60072 34 4 Quick-action seal, ND 60

Silicone rings

Type No. d D hmm mm mm

228 11 4 10 5228 14 6 16 5228 16 8 16 5228 17 10 16 5

KPG auxiliary pipetteused for determining the most suitable viscometer capillary number.

Type No.

576 99

The KPG auxiliary pipette is filled with the fluid which is thendischarged in drops through a KPG capillary tube.

The time elapsing between each drop (drop rate) indicates the mostapplicable viscometer constant as shown:

1 second or less with constant 0.011 to 5 seconds with constant 0.15 to 35 seconds with constant 1

35 seconds or more with constant 10

Drip panstainless steelThis accessory facilitates emptying and drying viscometers

Type No.

522 01

2

3

4

1

Thermo-meter

h

24

AVS measuring stands and hose sets

AVS measuring stands

– Measuring stands of the type seriesAVS/S can be used to measure theflow-through time in viscometers auto-matically.

– The measuring stands can be con-nected to all measuring instrumentsmade by SCHOTT for automatic measurement of viscosity and operatewith all standard viscometers for repe-titive measurements.

– Automatic measurements have the following advantages:– the repetitive standard deviation is

less than for manual measurements– the measurement is free from sub-

jective factors of influence– the results can be printed out and/or

be automatically documented on data memory system

– automatic processing of sample series is available.

– The use of different materials ensuresunproblematic adaptation to existingmeasurement temperatures and appli-cations.

– The measuring stands or brackets canbe exchanged at random. This is pro-vided by the precision applied duringproduction.

– The distance between the levels of theautomatic optoelectronic unloading system is 40.00 mm ± 0.03 mm. Whenmeasuring stands are replaced, this results in a standard deviation of VK =0.05% for Ubbelohde viscometers.

– For repetitive measurements with vis-cosity measuring instruments and Ubbelohde viscometers with measuringstands, the standard deviation VK =0.03%.

– Manually calibrated Ubbelohde visco-meters can also be used in AVS meas-uring stands. If the automatic sensing levels do not correspond to the ringmarks, the superimposed meniscus detection system will provide a higherconstant. The difference amounts to0.1% per millimetre of height offset.

Required hose/cable combinations

Viscometer type

Measuring instrument Hose/cable combinations

517 .. 540 .. 542 .. 547 .. 531 .. (3)

520 .. 541 .. 543 .. 548 ..530 .. 545 .. 544 .. 549 ..532 .. 546 .. 552 ..537 .. 553 ..

554 ..

AVS 300 and VZ 5505(1) or VZ 5621(1) and – – VZ 5857(1)

AVS 310 VZ 5501(2) VZ 5505(1)

AVS 350 VZ 5505(1) or VZ 5623(2) VZ 5606(1) VZ 5505(1) and VZ 5857(1)

VZ 5501(2) VZ 6226

AVS 360 and VZ 5104(1) or VZ 5623(2) VZ 5623(2) VZ 5104(1) or VZ 5104(1) orAVS 361 VZ 5622(2) VZ 5622(2) VZ 5622(2)

AVS 400 and VZ 5505(1) or VZ 5621(1) and – – VZ 5857(1)

AVS 410 VZ 5501(2) VZ 5505(1)

AVS 440 and VZ 5505(1) or VZ 5621(1) and VZ 5606(1) VZ 5505(1) and VZ 5857(1)

AVS 450 VZ 5501(2) VZ 5505(1) VZ 6226

1) Silicon tube2) PTFE tube (aggressive mediums)3) The necessary connection tube TZ 1607 (l=1.5 m) is included at the piston burette ViscoDoser AVS 20.

25

AVS measuring stands

Measuring stands

AVS/S AVS/S-HT AVS/SK AVS/S-CF AVS/SK-V

Available Ubbelohde viscometers in accordance with DIN, Cannon-Fenske Ubbelohdeviscometers ASTM, ISO 3105, Micro-Ubbelohde viscometers, routine dilution

Micro-Ostwald viscometers viscometers viscometers

Temperature –80 to +100°C –80 to +200°C 0 to 60°C –80 to +100°C 0 to 60°Crange other temperature

ranges availableon request

Suitable for use AVS 300, AVS 310, AVS 350, AVS 360, AVS 361, AVS 400, AVS 410, AVS 440, AVS 450,with the meas- AVS 500uring units

Suitable for use CT 1450/2, CT 1450/3, CT 1450/4, CT 1450/2 HT, CT 1450/4 HT, CT 1450/2 TT,with the ther- CT 1450/4 TT, CT 1450/2 M, CT 1650/2, CT 1650/4, CT 1650/2 HT, 1650/4 HT,mostatic baths CT 1650/2 TT, CT 1650/4 TT, CT 1650/2 M, CT 050/2, CT 052/2

Suitable 05392 no bracketbrackets 05397 required(type no.)

Electrical Cable VZ 6225 for all measuring stands to all instruments (is included in hose sets connection VZ 5505, VZ 5622 and VZ 5857), control lamp as function display

Distance bet- 40.00 mm w 0.03 mm at 25°Cween the meas-uring levels

Signal Optically using optical fibres from the measuring level in the stand head, converted intotransmission analogue signal from stand to measuring instrument

Material Aluminium, TiO2-anodized PVDF, stainless Aluminium, PVDF, stainlesssteel TiO2-anodized steel

Dimensions 90 x 447 x 90 90 x 496 x 90 90 x 447 x 90 90 x 447 x 90 90 x 447 x 90(W x H x D) mm

Weight (kg)appr. 1.0 1.25 0.8 1.0 0.8

Accessories Bracket type no. 05392 for Ubbelohde Hose/cable Hose/cableincluded in viscometers, hose/cable combination VZ 5505 combination combinationscope of VZ 5505 VZ 5857, mag-delivery netic stirring rods,

fastening springsfor viscometer

Note:

When TC viscometers are being used, a bracket type no. 05393, with the necessary hose set is required only. A measuring stand is not required.

SCHOTT Instruments GmbHPostfach 2443 D-55014 Mainz

[email protected]

Telefon +49(0) 6131/66-5111Telefax +49(0) 6131/66-5001

5501

8 e

42/M

akro

019

9 p

df

P71993 Kapillar englisch - wenk-labtec.com · With this viscometer type, the ... to note that the...

Documents

Transcript of P71993 Kapillar englisch - wenk-labtec.com · With this viscometer type, the ... to note that the...