Meet the standard of Altitude Test Chamber

Meet the standard.

TB/T2423.21-2008 electrical and electronic products environmental test Part 2: Test methods Test M: low air pressure

Altitude Test Chamber test purpose

To determine the suitability of components, equipment or other products for storage, transportation or use under low air pressure conditions

Altitude Test Chamber test instructions

The test sample into the test chamber, and then add the box force gas pressure to reduce the value of the corresponding specification, and maintain the test for the specified duration.

Altitude Test Chamber test equipment

Test chamber should have the ability to maintain the specified low air pressure conditions. Then restore the gas pressure system normal, care should be taken to avoid the occurrence of pollution due to auxiliary equipment, devices and the introduction of unclean space, but the air inside the box.

Altitude Test Chamber conditions test

The temperature inside the test chamber should be within the temperature range of the standard atmospheric conditions of the test as calibrated.

When the sample is not required to be tested in the operating condition, the sample should be placed in the test chamber in its normal position without packaging, without power, and in the "ready to use" condition.

The air pressure in the test chamber is reduced to a value that meets the specified severity level, and if necessary, the relevant specification may specify that the rate of change of air pressure is greater than 10 kPa/min.

When the sample is required to be tested in the operating condition, the sample should be energized or electrically loaded, and should be checked to determine whether the test sample can meet the functions specified in the relevant specifications, maintained in the operating condition for the specified duration, or disconnected from the power supply as required by the relevant specifications.

If the relevant specification requires intermediate testing, then intermediate testing should be performed.

For heat dissipation test samples, the relevant specification may require that the test sample be energized before or after reducing the air pressure for a sufficient period of time to achieve thermal stability and to conduct functional tests and inspections.

The air pressure should be maintained for the specified duration.

Air pressure back to atmospheric pressure, if the relevant specifications require, the rate of change should not exceed 10kPa / min.

If there are no other provisions of the relevant specifications, the test sample is kept under standard atmospheric conditions for recovery for not less than 1h, but not more than 2h.