Constant temperature and humidity test chamber troubleshooting methods

1, constant temperature and humidity test chamber low temperature can not reach the test indicators, then you have to observe the temperature change, is the temperature drop very slowly, or the temperature to a certain value after the temperature has a tendency to rise, the former will have to check to see if the studio before doing a low-temperature test will be dry, so that the studio to keep dry before the test samples into the chamber and then do the test, the test sample in the chamber is placed in the chamber is too much, so that the chamber The wind can not be fully circulated in the exclusion of the above reasons, it is necessary to consider whether it is a refrigeration system failure, so we should ask the manufacturer of the equipment company's professional staff to overhaul. The latter phenomenon is the use of equipment due to the environment is not good, the equipment placed in the ambient temperature, placed in the location to meet the requirements.

2, constant temperature and humidity test chamber in the high-temperature test, such as the temperature change does not reach the test temperature value, you can check the electrical system, troubleshooting one by one. If the temperature rises very slowly, we must check the wind circulation system, look at the wind cycle of the adjustment of the baffle is open normal, and vice versa, check the wind cycle of the motor operation is normal. If the temperature overshoots great then you need to rectify the PID setting parameters. If the temperature rises directly, over-temperature protection, then, the controller is out of order, must replace the control instrument.

3, constant temperature and humidity test chamber to do hot and humid test, there will be the actual humidity will reach 100% or the actual humidity and the target humidity difference is very large, the value of the former phenomenon: may be the wet bulb sensor on the gauze drying caused by the wet bulb sensor to check the wet bulb sensor of the sink is not a lack of water, water level in the water tank is automatically controlled by a water level controller, check the water level controller water supply system is normal water supply, water level controller work is normal. The water level in the tank is automatically controlled by a water level controller. Another possibility is that the wet bulb gauze due to use for a long time, or the purity of the water supply, will make the gauze hard, so that the gauze can not absorb water and dry, as long as the replacement or cleaning of the gauze can be excluded from the above phenomenon. The latter phenomenon is mainly humidification system does not work, check the humidification system of the water supply system, the water supply system, whether there is a certain amount of water, control the humidification boiler water level control is normal, humidification boiler water level is normal. If all of the above are normal, it is necessary to check the electrical control system, which should be overhauled by professional maintenance personnel.

4, constant temperature and humidity test chamber in the test run in the process of sudden failure, the control instrumentation on the corresponding fault display prompts and sound alarm prompts. Operators can use the operation of the equipment against the use of troubleshooting in a chapter to quickly check out what kind of failure, you can ask the professionals to quickly troubleshoot to ensure that the test is carried out normally. Other environmental test equipment in use will have other phenomena, it is necessary to specific phenomena, specific analysis and exclusion.

Constant temperature and humidity test chamber - environmental test equipment but also regular maintenance, refrigeration system condenser regular cleaning, for moving parts should be lubricated according to the instructions for refueling, electrical control system regular maintenance checks, etc., these tasks are essential.