The high-low Temperature Test Chamber is a kind of laboratory environment testing equipment. Some failures will inevitably occur during use. Today I mainly share how to quickly eliminate some common failures in daily use and how to eliminate them. method.
The temperature does not reach the test temperature
In the high-Temperature Test Chamber, if the temperature does not reach the test temperature standard during the high-temperature test, the electrical system can be checked one by one. If the temperature rises slowly, check whether there is a problem with the air circulation system, and check whether the air circulation motor is operating normally. If the temperature overshoot is serious, it is necessary to adjust the PID setting parameters. The temperature rises directly and is overprotected. At this time, check whether the controller is faulty.
General failure
If the high-low Temperature Test Chamber breaks down suddenly during the test operation, the corresponding fault display prompt and sound alarm prompt will appear on the control instrument, and the operator can quickly check which type of fault belongs to according to the troubleshooting chapter in the operation and use of the equipment , and can ask the professionals of the boxin instrument to troubleshoot quickly to ensure the normal operation of the test. Different environmental test equipment may have different problems, which need to be analyzed and solved in detail. Regular maintenance of environmental test equipment, regular cleaning of refrigeration system condensers, regular maintenance and inspection of electrical control systems, etc. These jobs are required.
The low temperature does not reach the test temperature standard
If the low temperature does not meet the test temperature standard, then you need to observe the temperature change, whether it is slow cooling or the temperature tends to rise after reaching a certain value. In the former case, it is necessary to check whether the working room is dry before the low temperature test. After the working room is kept dry, put the sample into the working room. Too many samples are placed in the working room, so that the air in the working room cannot be fully circulated. . After eliminating the above reasons, it is necessary to consider whether there is a malfunction in the refrigeration system. The latter phenomenon is caused by the harsh operating environment of the equipment.
Humidity measurements vary widely
In the damp heat test, the actual humidity will reach 100%, or the actual humidity of the high-low Temperature Test Chamber is very different from the target humidity. The former phenomenon may be caused by the dry gauze on the wet bulb sensor, so we have to check the wet bulb sensor to see if there is a lack of water and other problems. The water level in the Water Tank is automatically controlled by a water level controller. If the system of the water level controller works normally, another possibility is that due to the long use time of the wet ball gauze or the purity of the water supply, the gauze will harden and the gauze cannot absorb water and dry. As long as the gauze is replaced or cleaned, the above phenomenon will disappear. can be eliminated. The latter phenomenon is mainly due to the failure of the humidification system. Check whether the water supply in the humidification system is sufficient or faulty. If all the above are normal, check the electrical system and need professional maintenance.
