How to solve common faults in handling high and low temperature impact test chambers
High and low temperature impact test chambers are environmental test instruments. It is suitable for high temperature, low temperature, humidity testing, testing of electrical and electronic products, LED, chemical, rubber and plastic products, and the reliability of products to improve product quality. However, in the course of operation, if high-low temperature impact test chamber temperature does not reach the temperature index, low temperature cooling is slow, humidity does not operate in accordance with the scheduled three major faults, after many years of technical research and development combined with practical experience, how to solve the following treatment high The detailed analysis of the common faults of the low-temperature impact test box is provided for the reference of the users of the high-low temperature impact test box. Hope to help customers with daily maintenance and maintenance.
　
　 First, how to solve the high and low temperature impact test box can not reach the test index?
High-low temperature impact test chamber can't reach the index at low temperature. If the temperature drop is slow, you need to observe the change of temperature. It is the temperature drop is very slow, or the temperature has a tendency to rebound after the temperature reaches a certain value. The former must check and do low temperature. Whether the studio is to be dried before the test, so that the studio is kept dry and then the test sample is placed in the work chamber and then tested. Whether the test sample in the work chamber is placed too much and the wind in the work chamber cannot be sufficiently circulated, and the above reasons are excluded. After that, it is necessary to consider whether it is a fault in the refrigeration system. In this case, it is necessary to ask the factory's professionals to perform the repair. The latter phenomenon is caused by the poor use environment of high-low temperature impact test chamber equipment. The ambient temperature of the equipment and the location of the equipment (the distance between the rear of the cabinet and the wall) must meet the requirements (specified in the equipment operation instructions). ).
Second, how to solve the high and low temperature impact test chamber in the process of running, the temperature can not reach the test temperature value?
In the high temperature test, if the temperature change does not reach the test temperature value, the electrical system can be checked and the faults can be eliminated one by one. If the temperature of the high and low temperature test chamber 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, and conversely, check whether the motor operation of the air circulation is normal. If the temperature overshoots badly, then you need to set the PID setting parameters. If the temperature rises directly and over-temperature protection occurs, the controller fails and the control instrument must be replaced.
Third, the high and low temperature impact test box in the damp heat test process, the humidity can not meet the specified requirements, where is the problem?
High-low temperature impact test box in the heat and humidity test, the actual humidity will be achieved or the actual humidity and the target humidity difference is very large, the value is much lower, the former phenomenon: may be caused by dry gauze wet bulb sensor, then check Whether there is water shortage in the wet bulb of the wet bulb sensor, the water level in the water tank is automatically controlled by a water level controller, and whether the water level controller water supply system 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 due to the fact that the humidification system of the high-low temperature impact test box is not working. Check the water supply system of the humidification system. Whether there is a certain amount of water in the water supply system, and whether the water level control of the humidification boiler water level is normal or not, in the humidification boiler The water level is normal. If all of the above is normal, then check the electrical control system and ask professional service personnel to do the inspection. High and low temperature impact test chambers, because of the use of time limit, so the ultra-long run high and low temperature impact test chamber, it is inevitable that there will be a variety of minor faults, usually pay attention to regular maintenance and maintenance, generally can be largely avoided. If you are faced with a major technical problem, you can contact Aspen Corporation promptly and we will provide you with solutions.
Dongguan Aisi high and low temperature impact test box manufacturers use the facts to speak, do more important than that, professional and trustworthy! If there is any problem in the actual use can inquire, we will be happy to answer your questions!
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