1. In the high temperature test, if the temperature change does not reach the test temperature value, you can check the electrical system one by one and troubleshoot. If the temperature in the constant temperature and Humidity Chamber rises slowly, check the air circulation system to see if the air circulation adjustment baffle is opened normally, otherwise check whether the air circulation motor is operating normally. If the temperature overshoot is serious, you need to adjust the PID setting parameters. If the temperature rises directly, the overheating protection will cause the controller to fail, and the control instrument needs to be replaced.
2. When the low temperature in the constant temperature and Humidity Chamber does not reach the test index, it is necessary to observe the change of the temperature, whether the temperature drops slowly, or there is an upward trend after the temperature reaches a certain value, the former should be checked and carried out. Whether to dry the studio before the low temperature test, keep the studio dry, and then put the sample into the studio for testing. Are there too many specimens placed in the chamber so that the wind in the chamber cannot circulate completely. After the above reasons, it is necessary to consider whether this is a failure in the refrigeration system, so it is necessary to ask the professional responsible for maintenance of the Test Chamber manufacturer. The latter phenomenon is caused by the poor use environment of the equipment in the constant temperature and Humidity Chamber. The ambient temperature and location of the device (the distance between the back of the box and the wall) must meet the requirements.
3. In the damp heat test of the constant temperature and humidity Test Chamber, the actual humidity will reach 100%, or the actual humidity is very different from the target humidity, and the value is much lower. The former phenomenon: it may be caused by the drying of the gauze on the wet bulb sensor. It is necessary to check whether the Water Tank of the wet bulb 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 normal. Another possibility is that the wet ball gauze will harden the gauze thanks to the long use time or the high purity of the water, which can make the gauze unable to absorb water and dry. The above phenomena can be eliminated by replacing or cleaning the gauze. The latter is mainly because the humidification system in the constant temperature and humidity room does not work. Check the water supply system of the humidification system, whether there is a certain amount of water in the water supply system, whether the water level control for controlling the water level of the humidification boiler is normal, and whether the water level of the humidification boiler is normal. If the above conditions are normal, check the electrical control system and require professional maintenance personnel to overhaul it.
4. When the environmental test equipment fails suddenly during the test operation, if there is a corresponding fault display prompt on the control instrument, there will be an audible alarm prompt. The operator can quickly check the fault type in the troubleshooting chapter in the equipment operation, and then ask professionals to quickly troubleshoot to ensure the normal progress of the test. When using other environmental protection equipment, if there are other phenomena, you should check the specific phenomena, analyze and eliminate them.
