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Troubleshooting problems and corresponding solutions for high and low temperature impact test chambers

Author:QINSUN Released in:2023-06 Click:104

The high and low temperature impact test chamber is used to test the degree of extremely high or extremely low temperature that the material structure or composite material can withstand in an instant. It is a necessary measuring instrument and equipment for electronics, metal, plastic, rubber and other material industries. Long-term operation and improper operation of the high and low temperature impact test chamber will affect the service life of the thermal shock test chamber. The following editor will lead you to understand common troubleshooting problems and corresponding solutions of high and low temperature impact test chambers.

1. When a failure occurs suddenly during the test operation, the corresponding failure display prompt will appear on the control instrument, and there will be a sound alarm prompt. The operator can quickly checkwhat kind of fault it belongs to in the troubleshooting chapter in the operation and use of the equipment.t, and then instruct the personnel to troubleshoot the fault promptly to ensure the normal progress of the test. There will be other phenomena in the use of other environmental testing equipment, so it is necessary to analyze and eliminate specific phenomena. The environmental test equipment should also be maintained regularly, the condenser of the refrigeration system should be cleaned regularly, the moving parts should be lubricated according to the instructions, the electrical control system should be regularly maintained and inspected, etc. These tasks are essential

2. During the high temperature test, if the temperature 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 thee air circulation system to see if the air circulation control louver is open normally, if not, check if the air circulation motor works normally. If the temperature exceeds is severe, then it is necessary to adjust the PID tuning parameters. If the temperature rises directly, the overheating protection means that the regulator is faulty and the control instrument must be replaced.

3. If the low temperature does not reach the test index, you should observe the temperature change, whether the temperature drops very slowly or the temperature tends to rise after reaching a certain value, the first should be checked, whether to dry the work room before the low temperature test, keep the work room dry, then put the test sample into the work room, then do the test, whether the test samples in the work room are placedtoo much , so that the wind in the working room cannot completely circulate, After eliminating the above reasons, it is necessary to determine whether it is a failure of the refrigeration system, so that the manufacturer\'s personnel be asked to carry out a review. The latter phenomenon is caused by the poor environment of the equipment. The ambient temperature and the location of the equipment (the distance between the bottom of the case and the wall) must meet the requirements (this is stipulated in the instructions for use of the equipment).

4. In the heat test, the actual humidity will reach 100% or the actual humidity is very different from the target humidity, and the value is much lower. The first phenomenon: it may be caused by the drying of the gauze on the wet bulb sensor. Then it is necessary to check if there is no water in the tank of the wet bulb sensor. The water level in the tank ist 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 working normally. Another possibility is that the wet ball gauze hardens the gauze due to the long time of use or the purity of the water system, which may make the gauze unable to absorb water and dry out. You just need to replace or clean the gauze to eliminate the above phenomena. This last phenomenon is mainly due to the humidification system. If it 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 to control the water level in the humidification boiler is normal and the water level in the humidification boiler is normal. If all of the above is normal, check the electrical control system.ue and have maintenance personnel review it.