How to solve the failure of the constant temperature and humidity chamber
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How to solve the failure of the constant temperature and humidity chamber
If the temperature of the constant temperature and humidity chamber does not reach the test index, then you must observe the change of temperature, the temperature is very slow, or the temperature has a rising trend after the temperature reaches a certain value. The former should check it before the low temperature test. Whether to dry the studio, keep the studio dry, and then put the test sample into the work room and then test, whether the test sample in the work room is placed too much, so that the wind in the workroom cannot be fully circulated, after eliminating the above reasons It is necessary to consider whether it is a fault in the refrigeration system, so it is necessary to ask the professional of the manufacturer for maintenance. The latter phenomenon is caused by the poor use of the equipment. The ambient temperature at which the equipment is placed and the location where it is placed (the distance between the rear of the cabinet and the wall) must meet the requirements (as specified in the operating instructions for the equipment).
In the constant temperature and humidity test, the actual humidity will reach 100% or the actual humidity will be very different from the target humidity. The value is much lower. The former phenomenon may be caused by the drying of the gauze on the wet bulb sensor. Whether there is water shortage in the sink of the wet bulb sensor, 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 the water level controller works normally. Another possibility is that the wet gauze is hardened due to the long use time or the purity of the water supply, so that the gauze becomes hard and the gauze can not absorb moisture and is dry. The above phenomenon can be eliminated by replacing or cleaning the gauze. The latter phenomenon is mainly because the humidification system 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 of the humidification boiler water level is normal, and whether the water level in the humidification boiler is normal. If everything above is normal, then check the electrical control system, which should be repaired by professional maintenance personnel.
When the constant temperature and humidity chamber suddenly fails during the test operation, a corresponding fault display prompt appears on the control instrument and an audible alarm prompt is displayed. The operator can quickly check which type of fault is involved in the troubleshooting chapter of the operation of the equipment, and then ask the professional to quickly eliminate the fault to ensure the normal operation of the test. Other environmental testing equipment will have other phenomena in use, and it will be specific phenomena, specific analysis and elimination.
High and low temperature test chambers or constant temperature and humidity chambers should be regularly maintained. The condensers of the refrigeration system should be cleaned regularly. The moving parts should be lubricated according to the instructions, and the electrical control system should be regularly maintained and inspected. These tasks are essential.
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