The low pressure test chamber is suitable for high and low temperature and low pressure tests on electricians, electronic products and other products, parts and materials. The requirements for the structure and appearance of the optional low pressure test chamber are as follows:
1. The inner wall of the test chamber shall be made of a material that is resistant to heat, is not easily oxidized and corroded, and has a certain mechanical strength.
2. The insulation material should be resistant to high temperatures and low temperatures and have flame retardant properties.
3. The thickness of the insulation layer should be such that the external surface temperature of the test chamber is not higher than 50 Â° C. When the thickness of the insulation layer is operated at an ambient temperature of 15 Â° C to 35 Â° C and the relative humidity is less than 85%, there should be no obvious condensation.
4. Heating and cooling devices shall not directly radiate the sample.
5. The low pressure test chamber shall be provided with an observation window and a lighting device.
6. The test chamber auxiliary device and the material of the inner wall of the box should be avoided to pollute the air inside the box.
7. The sealing strip of the door should not be hardened under low temperature conditions to seal the performance.
8. The refrigeration system piping should be sealed and reliable, and must not leak, leak or leak oil.
9. The low pressure test chamber should have a test wiring device.
10, the appearance of the coating should be smooth and even, uniform color, no exposed, lifting, blistering or scratches.
11. There should be a sample holder for placing or hanging samples.
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