Talking about the temperature and humidity test method of constant temperature and humidity test chamber

The constant temperature and humidity test chamber is widely used in various temperature and humidity tests. In the temperature test, due to long-term use of equipment, aging of accessories, improper setting, etc., the temperature may not rise or fall to the specified temperature, and temperature failure may occur. The following is how to check and solve the problem after the temperature failure of the test box

In the high temperature test, if the temperature of the constant temperature and humidity test chamber does not reach the test set temperature, the equipment system should be checked one by one to solve the problem. If the temperature rise is particularly slow, check the air circulation system to see if the adjustment baffle is normally open. If the temperature rises too fast, check if the motor running in the wind cycle is normal. If the temperature overshoot is serious, the PID parameter setting needs to be performed again. If the temperature rises directly above the set temperature, it may be that the controller has failed and the control instrument needs to be replaced.

In the low temperature test, if the temperature drop of the constant temperature and humidity test chamber is particularly slow, there may be a problem in the refrigeration system, and it is necessary to check whether the refrigerant amount is sufficient and whether the system pipeline is bet. Also determine whether the studio has been dried before the experiment, whether the studio is dry or not, the sample is placed, whether the sample is placed properly, the quantity is too much, and the wind in the working room can be fully circulated. If there is no problem with the above, it may be that there is a problem with the refrigeration system. If the temperature drops to a certain value and then rises again, it may be related to the use environment of the constant temperature and humidity test chamber. It is necessary to check whether the ambient temperature around the equipment, the placement position, etc. are all installed according to the technical requirements.

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