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Problems And Solution For Constant Temperature And Humidity Chamber

Technical Knowledge 2022-02-26 14:25:31
The use of constant temperature and humidity incubator is very common in all walks of life, in order to improve the service life of their products, many companies now choose to purchase constant temperature and humidity incubator or other environmental test equipment for testing. There will be some small problems after a long period of use, the common faults of the constant temperature and humidity incubator and solution will be provided.

1.In the high temperature test, if the temperature of thermostat incubator change does not reach the test temperature value, you can check the electrical system and eliminate the faults one by one. If the temperature rises very slowly, check the air circulation system to see if the adjustment baffle of the air circulation is normally opened. On the contrary, check whether the motor of the air circulation is running normally. If the temperature exceeds of constant temperature and humidity incubator, it is necessary to tune the PID setting parameters. If the temperature rises directly, over-temperature protection, then the controller fails, and the control instrument must be replaced.

2. If the low temperature of thermostat incubator does not reach the test index, then observe the change of temperature, whether the temperature drops very slowly, or the temperature tends to rise after the temperature reaches. For the former, it is necessary to check whether the studio is dried before the low-temperature test, so that the studio is kept dry, and then the test sample is placed in the studio for testing. Whether the test samples in the working room are placed too much, so that the wind in the working chamber cannot be fully circulated. After eliminating the above reasons, it is necessary to consider whether it is a fault in the refrigeration system, so the personnel of the manufacturer should be invited to repair it. The latter phenomenon is caused by the poor environment of the equipment, the ambient temperature of the equipment, and the location (distance between the back of the box and the wall) requirements (all specified in the equipment operating instructions).

3. During the damp heat test of drying oven/incubator, 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, then check whether the water tank of the wet bulb sensor lacks water. The water level in the water tank is automatically controlled by the water level controller. Check whether the water supply system of the water level controller is normal, and whether the water level controller works normally. Another possibility is that the wet ball gauze will become hard due to the long use time or the purity of the water supply water, so that the gauze cannot absorb water and dry. The above phenomenon can be eliminated by replacing or cleaning the gauze. The latter phenomenon is mainly that the humidification system does not work, check the water supply system of the heating system, whether there is water in the water supply system, whether the water level control of the water level in the humidification boiler is normal, and whether the water level in the humidification boiler is normal. If all of the above are normal, check the electrical control system, which requires maintenance personnel to overhaul.

4. When the constant temperature and humidity test incubator suddenly fails during the test, the corresponding fault display prompt and sound alarm prompt will appear on the control instrument. The operator can quickly check which type of fault belongs to the chapter of troubleshooting in the operation and use of the equipment, and then ask the personnel to quickly eliminate the fault to ensure the normal operation of the test.

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