1. Problem: If the temperature change can not reach the experimental temperature value in high temperature experiment

How to deal with it: In this case, first of all, we can check the electrical system and clean up the faults one by one. If the temperature of the constant temperature and humidity test box rises too slowly, it is necessary to check the wind circulation system and whether the conditioning baffle of the wind circulation is normal. On the contrary, it is necessary to check whether the wind cycle motor is working properly. If the temperature overshoot is severe, the setting parameters of PID need to be adjusted. When the temperature rises directly to overtemperature protection, the operator will need to replace the control appearance or solid relay if something goes wrong.

2. Problem: When the low temperature of the constant temperature and humidity test box can not reach the experimental target

Processing method: At this time, we need to observe whether the temperature changes slowly, or whether there is a trend of temperature rising after the temperature reaches a certain value. If the former is the case, we should check whether there is drying in the operating room before doing the low temperature experiment, so that the operating room insists on drying, and then put the samples into the operating room for experiment, whether there are too many samples in the operating room, so as to make the operating room dry. The wind can not circulate adequately. After removing the above reasons, we should consider whether the refrigeration system is defective or not. If this is the case, we need to ask the manufacturer's professional personnel for maintenance.

3. Problem: The equipment of the constant temperature and humidity test box has a sudden malfunction in operation. The control appearance shows corresponding malfunction prompt and sound alarm.

How to deal with it: Users can quickly find out which kind of faults they belong to in the chapter of troubleshooting according to the operation manual of the equipment. In order to ensure the normal operation of the experiment, professional maintenance personnel are invited to clean up the defects. There will be other situations in the use of other environmental experimental equipment, which need to be dealt with according to the status quo.