Product use: high and low temperature alternating damp heat box is suitable for the debugging of the safety performance of electronic vitality parts to provide reliability test, product screening test, etc. Meanwhile, through this equipment test, the reliability of the product and the quality control of the product can be improved. It is used to assess and determine the electrical and electronic products, automotive electrical appliances, materials, etc., the parameters and performance after the impact of temperature change in the high and low temperature test, the adaptability used, applicable to schools, factories, military industry, research positions, etc. unit.
The high and low temperature alternating damp heat box manufacturer Beijing Pusunda Instrument Technology Co., Ltd. summarized some common failures of the equipment in the test process through some practical cases and solutions:
First, in the high temperature test, if the temperature change does not reach the test temperature value, the electrical system can be detected 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 normally open. Conversely, check whether the motor of the air circulation is operating normally. 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.
Second, when a sudden failure occurs during the test operation, a corresponding fault display prompt appears on the control instrument and there is a voice alarm prompt. The operator can quickly detect which type of fault is in the troubleshooting section of the operation of the facility, and the professional can quickly troubleshoot the problem to ensure the normal operation of the test. There will be other phenomena in the use of other environmental testing facilities. Specific phenomena should be analyzed and eliminated. The environmental testing facilities must also be regularly maintained. The condensers of the refrigeration system should be regularly cleaned. The moving parts should be lubricated according to the instructions. If the electrical three or low temperature fails to reach the test target, then you must observe the temperature change, which is the temperature drop. If the temperature is very slow, or the temperature rises after the temperature reaches a certain value, the former needs to be tested. Before the low temperature test, whether the studio is to be dried or not, 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 working room is placed too much and 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. In this case, the manufacturer's professional personnel must be inspected and repaired. The latter phenomenon is caused by the poor use environment of the facility. The ambient temperature of the facility and the location of the facility (the distance between the rear of the enclosure and the wall) must meet the requirements (specified in the operating instructions of the facility).
4. In the heat test, the actual humidity will reach 100% or the actual humidity and the target humidity will differ greatly. The value is much lower. The former phenomenon may be caused by dry gauze on the wet-bulb sensor. Then we must detect the wet-bulb sensor. Whether the water in the sink is short of water, the water level in the water tank is automatically controlled by a water level controller. Check if 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 it is necessary to test the electrical control system, which requires professional maintenance personnel to perform maintenance.
The high and low temperature alternating damp heat box manufacturer Beijing Pusunda Instrument Technology Co., Ltd. summarized some common failures of the equipment in the test process through some practical cases and solutions:
First, in the high temperature test, if the temperature change does not reach the test temperature value, the electrical system can be detected 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 normally open. Conversely, check whether the motor of the air circulation is operating normally. 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.
Second, when a sudden failure occurs during the test operation, a corresponding fault display prompt appears on the control instrument and there is a voice alarm prompt. The operator can quickly detect which type of fault is in the troubleshooting section of the operation of the facility, and the professional can quickly troubleshoot the problem to ensure the normal operation of the test. There will be other phenomena in the use of other environmental testing facilities. Specific phenomena should be analyzed and eliminated. The environmental testing facilities must also be regularly maintained. The condensers of the refrigeration system should be regularly cleaned. The moving parts should be lubricated according to the instructions. If the electrical three or low temperature fails to reach the test target, then you must observe the temperature change, which is the temperature drop. If the temperature is very slow, or the temperature rises after the temperature reaches a certain value, the former needs to be tested. Before the low temperature test, whether the studio is to be dried or not, 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 working room is placed too much and 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. In this case, the manufacturer's professional personnel must be inspected and repaired. The latter phenomenon is caused by the poor use environment of the facility. The ambient temperature of the facility and the location of the facility (the distance between the rear of the enclosure and the wall) must meet the requirements (specified in the operating instructions of the facility).
4. In the heat test, the actual humidity will reach 100% or the actual humidity and the target humidity will differ greatly. The value is much lower. The former phenomenon may be caused by dry gauze on the wet-bulb sensor. Then we must detect the wet-bulb sensor. Whether the water in the sink is short of water, the water level in the water tank is automatically controlled by a water level controller. Check if 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 it is necessary to test the electrical control system, which requires professional maintenance personnel to perform maintenance.
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