Elimination of high and low temperature test equipment failure method described below:
1, high and low temperature test equipment, low temperature can not reach the test indicators, then you have to observe the temperature changes, the temperature is very slow, or the temperature to a certain value after the temperature has rebounded, the former will check, do low Whether the studio will be dried before the test, so that the studio to keep dry after the test sample into the studio to do the test, the studio test sample is placed too much, so that the work room can not fully circulate the wind, Reason, we must consider whether the refrigeration system is faulty, and this will ask the goods manufacturers of professional staff for maintenance. The latter phenomenon is the use of the device environment is not good, the device placed in the ambient temperature, placed to meet the requirements of the location.
2, high and low temperature test equipment in high temperature test, such as temperature changes can not reach the test temperature value, you can check the electrical system, one by one troubleshooting. If the temperature rises slowly, it is necessary to check the wind circulation system, look at the wind circulation adjustment baffle is open normally, on the contrary, check the wind circulation motor is running normally. Such as the temperature overshoot so you need to set the PID set parameters. If the temperature rises directly, over temperature protection, then, the controller fails, need to replace the control instrument.
3, high and low temperature box in the hot and humid test, the actual humidity will reach 100% or the actual humidity and the target humidity vary greatly, the value is much lower, the former phenomenon: may be wet bulb sensor gauze drying caused, To check the wet bulb sensor water tank is water, the water level in the tank is controlled by a water level controller, check the water level controller water supply system is normal water supply, water level controller is working properly. Another possibility is the wet gauze due to the use of a long time, or water quality purity of the reasons, will make the gauze hard, so that gauze can not absorb moisture and dry, as long as the replacement or cleaning gauze can rule out the above phenomenon. The latter phenomenon is mainly the humidification system does not work to see the humidification system of the water supply system, the water supply system whether there is a certain amount of water to control the water level of the humidifier boiler water level is normal, humidification boiler water level is normal. If everything is normal, it is necessary to check the electrical control system, which requires professional maintenance personnel to repair.
4, high and low temperature test equipment in the process of running a sudden failure, the control instrument appears on the corresponding fault display prompts and voice alarm tips. The operator can control the operation of the equipment in the use of troubleshooting chapter quickly check out what kind of fault, you can ask the professionals to quickly troubleshoot to ensure that the normal test. Other environmental testing equipment in use there will be other phenomena, it should be specific phenomena, specific analysis and exclusion.
Environmental testing equipment should also be carried out on a regular basis, the refrigeration system of the refrigeration system to clean up regularly for the moving parts should be lubricated according to the instructions, electrical control system regular maintenance checks, etc., these work is essential.
