How to quickly handle the temperature and humidity test chamber failure? 1. In the high temperature test, if the temperature change fails to reach the test temperature value, the electrical system can be checked and the faults can be eliminated one by one. If the temperature of the constant temperature and humidity test chamber rises very slowly, it is necessary to check the wind circulation system to see if the adjustment baffle of the wind circulation is normally open, and conversely, check whether the motor operation of the wind circulation is normal. If the temperature overshoots badly, then you need to set the PID setting parameters. If the temperature rises directly and over-temperature protection occurs, the controller fails and the control instrument must be replaced. 2, when the constant temperature and humidity test box low temperature can not reach the test index, then you have to observe the temperature changes, the temperature drop is very slow, or the temperature has risen after a certain value of the trend, the former must check, Whether the studio is to be dried before the low-temperature test, so that the studio is kept dry, and then the test sample is put into the work chamber for further testing. The test sample in the work chamber is placed too much, so that the wind in the work chamber cannot be fully cycled. After eliminating the above reasons, it is necessary to consider whether it is a fault in the refrigeration system. In this case, the manufacturer's professional personnel must be inspected and repaired. The latter phenomenon is caused by the poor use environment of the constant temperature and humidity chamber equipment. The ambient temperature of the equipment and the location of the equipment (the distance between the cabinet and the wall) must meet the requirements (in the equipment operation and use instructions) ). 3, the temperature and humidity test chamber in the hot and humid test, the actual humidity will reach 100% or the actual humidity and the target humidity difference is very large, the value is much lower, the former phenomenon: may be caused by dry gauze on the wet ball sensor, It is necessary to check whether the water tank in the wet ball sensor is short of water. The water level in the water tank is automatically controlled by a water level controller. Check whether the water supply system of the water level controller is normal and whether the water level controller is working properly. Another possibility is that the wet ball gauze may cause the gauze to become hard due to the long use time or the purity of the water supply, so that the gauze cannot absorb moisture and dry, and the above phenomenon can be eliminated only by replacing or cleaning the gauze. The latter phenomenon is mainly due to the fact that the humidifying system of the constant temperature and humidity test box is not working, the water supply system of the humidifying system is checked, whether there is a certain amount of water in the water supply system, whether the water level control of the humidifying boiler water level is normal, and whether the water level in the humidifying boiler is normal . If all of the above is normal, then check the electrical control system, which requires professional maintenance personnel to perform maintenance. 4. When the equipment of the constant temperature and humidity test box suddenly fails during the test operation, the control instrument displays a corresponding fault indication prompt and a voice alarm. The operator can quickly check which type of fault belongs to in the troubleshooting chapter of the operation of the equipment, and then the professional can quickly eliminate the fault to ensure the normal operation of the test. Other environmental test equipment will have other phenomena in use, it must be specific phenomena, specific analysis and exclusion.
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