The temperature change of the high and low temperature test chamber cannot reach the test temperature value

1. High and low temperature test equipment. In the high temperature test, if the temperature change does not reach the test temperature value, you can check the electrical system and troubleshoot one by one. If the temperature rises very slowly, check the air circulation system to see if the adjustment baffle of the air circulation is open normally, otherwise, check if the motor of the air circulation is operating normally. If the temperature overshoot is severe, then you need to tune the PID setting parameters. If the temperature rises directly and the over-temperature protection is applied, then the controller fails and the control instrument must be replaced.

2. If the low temperature of the High and low temperature test equipment.fails to reach the test index, you have to observe the temperature change, whether the temperature drops slowly, or the temperature has a tendency to rise after the temperature reaches a certain value, the former should be checked and the low temperature Whether to dry the studio before the test, keep the studio dry, and then put the test sample in the studio to do the test again. Whether the test sample in the studio is placed too much so that the wind in the studio cannot be fully circulated. After the reason, it is necessary to consider whether it is a fault in the refrigeration system, so that it is necessary to ask the manufacturer's professional staff to perform maintenance. The latter phenomenon is caused by the bad environment in which the equipment is used. The environment temperature and position (the distance between the back of the box and the wall) of the equipment must meet the requirements (there are provisions in the equipment operation instructions).