How to judge the unknown phenomenon in the high and low temperature test chamber

If an abnormal reaction occurs during the operation of the high and low temperature test chamber, how do we judge? The following two situations appear more frequently:

In the high temperature test, the temperature change does not reach the test temperature value: at this time we can check the electrical system and eliminate the fault one by one. If the temperature rises very slowly, it is necessary to check whether the adjustment baffle of the wind cycle is opened normally, otherwise, check whether the motor of the wind cycle is operating normally. If the temperature overshoot is severe, then the PID setting parameters need to be adjusted. If the temperature rises directly and the over-temperature protection, then the controller fails, the control instrument must be replaced.

Low temperature can not reach the test index: first of all, it is necessary 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 check whether the studio is baked before the low temperature test Dry, keep the studio dry, and then put the test samples into the work room to conduct the test. Whether the test samples in the work room are placed too much, so that the wind in the work room cannot be fully circulated, which is mainly due to the poor use environment of the equipment To. After eliminating the above reasons, it is necessary to consider whether it is a failure in the refrigeration system. In this case, we must call the company's after-sales service phone and ask the technician to carry out maintenance.

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