The Stress Limit for your products

Temperature Shock Test Chamber Model TS130

Weiss Umwelttechnik GmbHSimulationsanlagen Messtechnik

Application

We at Weiss. . .

The model TS130 temperatureshock test chamber is a furtherexample of the future-oriented test-ing systems developed by WeissUmwelttechnik.

The design, the control system andthe operation of the test chamberhave been revised to provide theuser with a testing system that isthe best possible in every respect.

This is true for a great variety oftechnical and practical details aswell as the price/performanceratio, whereby we gave equalweight to capital investment andoperating costs.

The digital measuring and controlsystem S!Mcon/32*-NET with 32 bitprocessor developed by WeissUmwelttechnik provides highestcontrol comfort.

In conjunction with the softwarepackage S!MPATI* an extremelyuncomplicated simulation manage-ment system is available thatensures complete documentationand management of complex testseries.

Why performing shock tests?

Environmental conditions have aconsiderable effect on the functionand the reliability of electroniccomponents, devices and systems.

International standards and testspecifications define the test per-formances for standard applica-tions, e. g. in the electronics andautomobile industries as well as inthe aerospace industries.

The main purpose of temperatureshock tests is to determine,

if sudden temperature changeshave an influence on the speci-men’s long term function,

if safe operation of the specimenis still guaranteed after suddentemperature changes.

In addition, early failures due topart and workmanship defects canbe provoked without reaching themechanical and thermal stress lim-its of the construction. This testprocess, the ESS stimulation (ESS =Environmental Stress Screening), isapplied to discover such defects inearly production stages.

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Physical damage incurred as aresult of temperature shock is prin-cipally caused by differing expan-sion coefficients. This gives anindication of the ageing propertiesand suitability of various materialsand quickly reveals hidden defects(accelerated ageing).

A long term temperature cycle testis therefore increasingly gaining inimportance.

The life expectancy of the testspecimens can be forecast after a test carried out with a few hundred, or even a few thousend,temperature cycles.

The Temperature Shock Test Chamber System Weiss guaranteesthe user assured test results bycomplying with the requirementsspecified in the standards.

Test Description

The Test Procedure

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The test chamber consists of twoindependently controlled cham-bers, one hot and one cold. Theseare positioned on top of each other.The temperature shock is achievedby rapid transferring the samplesfrom one chamber to the other.The temperature levels and thenumber of cycles determine theseverity of test.

A variety of standards specify thedetails of the test:

Temperature of the hot chamber

Temperature of the cold chamber

Dwell time in the hot chamber

Dwell time in the cold chamber

Duration of transport process

Number of cycles

Some of the standards also staterequirements on how quickly theset temperature should be reachedinside or on the surface of the testspecimens. This requirement arisesfrom the fact that however quicklythe temperature changes at anypoint in the air stream inside thechamber it is of little significancefor the true temperature stress inthe test specimens.

It is the temperature change in thetest specimen itself, and not that ofthe air, that determines the genera-tion of temperature stresses withinthe test specimen.

These and other standards can be performed with the Temperature Shock Test Chamber System Weiss.

* Conditions D + F with options only

The Test Methods

For a fast and even temperatureconditioning the air flows horizon-tal through the hot and the coldchamber. In each chamber an axialfan blows the air over the condi-tioning elements – the electricresistance heaters in the hot cham-ber and the fintype heat exchanger(evaporator) in the cold chamber.

A cascade refrigerating system withrobust semi-hermetic compressorsis being used. The safe perfor-mance of the compressors is moni-tored by several safety devices.Easy access enables an optimal servicing.

Mode of operation

Test method Upper temperature Lower temperature

°C Dwell time Δϑ °C Dwell time Δϑ Number(h) (°C) (h) (°C) of temperature

DIN-IEC 68-2-14 Na 1987 edition +40 . . . +220 0.5 . . . 3 3 % –10 . . . –65 0.5 . . . 3 8 % 5

MIL-STD 202F/107G 3/84 edition +85 . . . +200 0.25 . . . 8 ±0 –55 . . . –65 0.25 . . . 8 0/–5 5 / 25 / 50 / 100

MIL-STD 750C method 1051.5 +85 . . . +200 10 mins ±15/0 –55 . . . –65 10 mins ±0/–10 204/92 edition

MIL-STD 810F method 503.4 upon3/98 edition agreement

MIL-STD 883G method 1010.8 +85 . . . +200 min.10 mins ±15/0 –55 . . . –65 min.10 mins 0/–10 at least 10conditions A, B, C, [D, F]* upon specimen upon specimen02/06 edition reach. setpoint reach. setpoint

MIL-STD 331B Test 113.1/C7 +71 >4 –54 >4 33/97 edition

DEF 5011 4/71 edition +70 . . . +200 1 ±3 –25 . . . –65 1 ±3 10

DEF 133 dry 8/71 edition +55 3 ±2 –40 3 ±3 dry by agreement

Technical Description

Design features and technical data

The temperature shock test cham-ber consists of the two internalchambers arranged one on top ofthe other with an automatically driven lifting basket.

The casing is made from corrosion-resistant galvanised sheet steel and is finished in two colours (RAL 5000 blue and RAL 9002white grey).

The insulation consisting of miner-al wool between the internal andexternal casing guarantees opti-mum insulation and thus the low-est possible operating costs.

The two internal chambers are con-structed from high-quality stainlesssteel welded vapourtight.

Fluctuations in the air volumecaused by temperature variationsduring the test cycles are compen-sated for by means of a integratedexpansion device.

The test basket is raised from thecold chamber to the hot chamberby an electrical motor and a rodwith pinion.

The vertical operating sliding doorin ergonomic working height clos-es the hot chamber and savesspace in front of the test chamber.

The window in the sliding doorallows optimal observation of thetest basket.

Model TS 130

Test basket volume approx. 130 l

Test basket dimensionsHeight approx. 430 mmWidth approx. 500 mmDepth approx. 600 mm

External dimensionsHeight approx. 1,990 mmWidth approx. 1,820 mmWidth inclusive of door hinge approx. 1,850 mmDepth without door approx. 900 mmDepth with removable door approx. 1,155 mmDepth of notebook swivel approx. 170 mm

Window in the sliding doorHeight approx. 450 mmWidth approx. 500 mm

Temp. range (refer to working range)Hot chamber approx. +60 . . . +220 °CCold chamber approx. –10 . . . –80 °C

Temperature constancy, in time approx. ±1 K

Changeover time approx. 10 secs

Max. specimen weight approx. 20 kg

Temperature change of 10 kg ICs in ≤15 mins

Electrical connection 3/N/PE AC 400 V ±10 % 50 HzCEE 32A connector

Max. power consumption approx. 28 A

Connected load approx. 14 kW

Paint finish RAL 5000 (blue) / RAL 9002 (grey)

Sound pressure level free field1 m distance from front of unit approx. 61 dB (A)

Weight approx. 950 kg

We reserve the right to make technical changes.

Working range:

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Tem

per

ature

Hot

Cham

ber

[°C

]

Temperature Cold Chamber [°C]

Achievable temperatures in the hot and cold chamberwithin a cycle time of 1 hour (30 minutes hot chamber / 30 minutes cold chamber)

WSC

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Control and Monitoring

Operation and Program Control via the DigitalMeasuring/Control System S!MCON/32*-NET

S!Mcon/32*-NET is a self-monitor-ing digital 32 bit measuring andcontrol system and has especiallybeen developed for the applicationin test chambers.With its computing efficiencyS!Mcon/32*-NET fulfils the require-ments of the process engineeringand eases the entry function withan especially developed touchpanel.

The graphic TFT colour touch panelwith a resolution of 640 x 480 pix-els is standard equipment.

The S!Mcon/32*-NET system takesover all necessary control func-tions. Besides the control for hotand cold chambers it contains apowerful software PLC which coor-dinates and monitores all functionsand informs you about failures.

TFT colour touch panel,adjustable in height for the easyinput of parameters and performing program operation.Graphical representation of setand actual values, operatingtime and number of remainingcycles etc., including help function

Program memory for up to 100 programs with a total of1,000 program steps, 250 loopsand 9,999 program cycles

Software support of the poten-tial-free switching inputs andoutputs

4 each potential-free switchinginputs and outputs

Two-level password access thatprotects against unintentionalediting

Integrated threshold value monitoring system for hot andcold chamber

Diagnostic system providesinformation on interruptions inoperation and logs the machineoperating times and switchingfrequencies of the individualsystem components

Parallel printer interface[Centronics] for graphic documentation for HP DeskjetColor and EPSON printer

Serial interface RS 232 C, galvan-ically isolated, for connecting to a computer system or for net-working

Compatible with simulationmanagement software S!MPATI*

for uncomplicated managementand logging of data records

2 expansion slots for measuring,input and output modules.

Special features:

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Operating and Documentation

The temperature shock test cham-ber can be operated via the

Colour touch panel or via a

notebook.

Test cycles can be programmedand started via the touch panel.

A trend graphics informs about thetemperature levels in both the hotand cold chambers. Duration oftest and number of cycles are dis-played and are easy to monitor.

Programmes set up in the note-book are transferred into the measuring and control systemS!Mcon/32*-NET.

The test chambers are equippedwith a serial interface for theupgrading of configurations.

Linking to peripheral systems notonly allows for compatibility andflexibility but also opens up newopportunities in the field of envi-ronmental simulation technology.

Thanks to compatibility with allsoftware products of Weiss Um -welt technik many more convenientoperating and monitoring featuresare available.

Shock chamber – basic menu

Shock chamber – basic menu for automatic mode

Shock chamber – settings for start of program

Shock chamber – status menu

Shock chamber – program editor

For complete documentation andgraphic evaluation the computer-aided simulation management soft-ware S!MPATI* is available. Installedon the optional notebook servicestation the user can access thecomplete service of a PC viaWindows:

Especially:

Coordinate the test procedure

Safe measuring data

To easily establish test pro-gramms via the graphic editor

To network up to 99 units witheach other

To print measuring data asgraphic and to copy them intoother programes for evaluation

By the use of internal interfacesS!MPATI* is compatible with

Microsoft Word

Microsoft Paint

Microsoft Excel

Labview

Special user software by the useof online and socket interface

Simulation packagefor test system integration S!MPATI*

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Design

Standard

High performance temperaturecycling (sufficient for 10 kg ofintegrated circuits as specified in MIL-STD 883G/1010.8,Conditions A, B and C)

Manual sliding door with window 450 x 500 mm

Height-adjustable specimenshelf in the lifting basket

1 access port, diameter approx.32 mm, integrated into the rackto insert the connecting lines

Integrated expansion deviceallows up to 1000 cycles withoutdefrosting

Icing sensor for cold chamberheat exchanger

Hermetic, water cooled, refriger-ating cascade

Pre-cooling/pre-heating

Superheating/supercooling

Digitally adjustable high and low temperature protection(specimen protection accordingto EN 60 519-2 [1993] with separate sensor) one for the hotand one for the cold chamber

Preselection of position of testbasket before test start

TFT colour touch panel with simple, menue-guided operation[no programming knowledgenecessary]

Operational modes adjustable(normal, optimized processingtime and energy-saving mode)

Temperature sensor to recordthe temperature profile of thesurface of the specimen,freemoving inside the test basket

Serial interface RS 232 C

4 each potential-free switchinginputs and outputs (digital)

Efficient cross-air circulation

Low energy consumption

Modular construction

Easy access to the units

Small footprint

Ready-to-plug-in construction

Factory calibration (WKD) of 2 temperature values (hot chamber 125 °C/cold chamber –40 °C)

Options

Heating of cold chamberExtension of cold chamber temperature range to –80 . . . +40 °C

Cooling of hot chamberExtension of hot chamber temperature range to +20 . . . +220 °C

Cold accumulator for cold chamber

Variable speed air circulationfans

Electrically opening and closingof sliding door

Inert gas feed via solenoid valve

Air-cooled refrigeration unit

Special wire box in the specimenbasket for ICs

Cable port diameter 60 mm (or NW 100 mm) in the basketand in the chamber ceiling

Lifting device for specimenweight of max. 50 kg

Other voltages and frequencies

Additional calibrations

Ethernet/CAN interface (100/10 Mbit) in connection with S!MPATI* for integration into a network

Software package S!MPATI* forWindows 2000, Windows 2003Server or Windows XP Prof

Additional potential-free switch-ing inputs and outputs

Measuring data acquisition system for Pt 100 and voltagesignals ±10 V

Potential-free contact for emergency call appliance

Configuration modules for interface standards such as RS 422, RS 485 [4 pole], IEFE 488.2 and optical wave-guide

Mobile design

Analog outputs for set and actual values

Increased heating and coolingcapacity

Additional Pt 100 sensor/with plugs

Special accessories on request.

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A complete line of systems is available offering test space volum -es ranging from approx. 34 l to 2,160 litres, a working range from–75 . . . +180 °C and relative humid-ity values ranging from 10 . . . 98%r.h. We also offer an extensive line offield-proven test systems speciallyfor simulating exposure to weather,temperature shock, corrosion andlong-time tests for application in research, development, qualitycontrol and production.

Of course, Weiss Umwelttechnik –as one of the leading producers ofenvironmental simulation systemsworldwide – offers the entire spec-trum of high-tech test systemsstarting from a series of cost-effec-tive test systems up to customizedwalk-in chambers and in-line sys-tems as per customer specifica-tions.

If it’s know-how, service and relia-bility that you are looking for –contact Weiss Umwelttechnik.

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Further information, offices in Ger -many, subsidiaries and represen -tatives worldwide are available at

www.weiss.info

Test Technology for Professionals. Test the best. . .

Weiss Umwelttechnik GmbHSimulationsanlagen Messtechnik35447 Reiskirchen-Lindenstruth/Germany • Greizer Str. 41 –49Telefon (0 64 08) 84-0 • Telefax (0 64 08) 84-87 10www.weiss.info • www.wut.com • eMail: info@wut.com