Mts Series 651 Environmental Chambers Manuel d'utilisateur télécharger pdf (Page 24)

Series 651 Environmental Chamber

2. Connect a coolant gas exhaust line to the vent on the rear of the chamber to

carry exhausted cooling gases away from the test site. The exhaust line must

have an inside diameter at least as great as the diameter of the vent, and

should be as short as possible, with as few bends as possible to prevent back

pressure in the chamber.

3. Turn the liquid withdrawal valve on the supply tank on before beginning a

test.

Note When cooling is not being used, the liquid withdrawal valve on the supply

tank should be kept closed to prevent leakage of the coolant.

Check the operating temperature range of each component in the

environmental chamber. All components must be able to operate at the

temperature of the test.

Damage to equipment can occur.

Do not set a testing temperature that is higher or lower than the temperature

rating of any component (grips, fixtures, and so forth.) inside the chamber.

Setting the testing

temperature

Set the desired chamber temperature or temperature range with the temperature

controller. See the temperature controller manual.

Note Do not set a testing temperature colder than -129°C (-200°F). Loss of

temperature control to the chamber will cause nitrogen “snow” to fill the

chamber, invalidating test results.

Do not set a testing temperature higher than the design operating range

(see specifications). If the temperature in the chamber exceeds the

design operating range by approximately 28°C (50°F), the high

temperature limit switch will disconnect power from the heater elements.

WARNING

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Mts Series 651 Environmental Chambers Manuel d'utilisateur Page 24