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What are the ways to troubleshoot the high and low temperature test chamber?

2021-10-15NOKI INSTRUMENT

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. When the high and low temperature test equipment suddenly fails during the test operation, the corresponding failure display prompt and audible alarm prompt will appear on the control instrument. The operator can quickly check which type of fault belongs to in the chapter of troubleshooting during the operation of the equipment, and then ask professionals to quickly troubleshoot the fault to ensure the normal progress of the test. There will be other phenomena in the use of other environmental test equipment, so specific phenomena should be analyzed and eliminated.  Environmental testing equipment should also be maintained regularly, the condenser of the refrigeration system should be cleaned regularly, the moving parts should be lubricated according to the instructions, and the electrical control system should be regularly maintained and inspected. These tasks are indispensable.

3. The high and low temperature test instrument does not meet the test indicators, so you have to observe the temperature change, whether the temperature drops very slowly, or the temperature has a tendency to rise after the temperature reaches a certain value, the former should be checked and low temperature Whether to dry the studio before the test, keep the studio dry, and then put the test sample in the studio for 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. For this reason, it is necessary to consider whether it is a fault in the refrigeration system so that it is necessary to ask a professional for 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) where the equipment is placed must meet the requirements (specified in the equipment operation instructions).

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