Temperature and humidity test box fault How to troubleshoot the temperature and humidity test box, the staff need to carry out the investigation of the equipment, the staff should be from what aspects of investigation?
First, the temperature and humidity test box 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 rises very slowly, it is necessary to look at the air circulation system and see if the adjustment baffle of the air circulation is turned on normally. On the contrary, check whether the motor operation of the air circulation is normal. If the temperature overshoots badly, then you need to set the PID setting parameters. If the temperature rises directly, over-temperature protection, then the controller fails and the control instrument must be replaced.
2. When the temperature and humidity test box suddenly fails during the test operation, the control instrument displays a corresponding fault display prompt and a voice alarm. The operator can quickly check which type of fault belongs to in the troubleshooting section of the operation of the equipment, and 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.
Third, the temperature and humidity test chamber can not reach the low temperature test index, then you have to observe the temperature changes, the temperature drop is very slow, or after the temperature to a certain value, the temperature has picked up the trend, the former must check, do low temperature Whether the studio is to be dried before the test, so that the studio is kept dry, and then the test sample is put into the work chamber and then tested. Whether the test sample in the work chamber is placed too much or not, the wind in the work chamber cannot be sufficiently circulated, eliminating the above After the reasons, it is necessary to consider whether it is a fault in the refrigeration system. In this case, Shanghai Guangpin Test Equipment Manufacturing Co. The latter phenomenon is caused by the poor use environment of the 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 (both are specified in the equipment operating instructions).
Fourth, the temperature and humidity test chamber in the heat test, the actual humidity will reach 100% or the actual humidity and the target humidity is very different, the value is much lower, the former phenomenon: may be caused by dry gauze on the wet ball sensor, that 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 the moisture and dry, and the above phenomenon can be eliminated only by replacing or cleaning the gauze. The latter phenomenon is mainly because the humidification system is not working. Check the water supply system of the humidification system. Check whether there is a certain amount of water in the water supply system. Control whether the water level 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 the repair.
The temperature and humidity tester should strictly observe the operation specification during the operation process, and at the same time regularly check and inspect the small parts of various parts of the machine to ensure the normal operation of the temperature and humidity test box.

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