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The high and low temperature impact test box is suitable for the safety performance debugging of the electronic component to provide reliability test, product screening test, etc. At the same time, through the equipment test, the reliability of the product and the quality control of the product can be improved. The high and low temperature impact test box is an essential debugging facility for aviation, automobile, home appliance, scientific research and other fields. It evaluates and determines the parameters and performance of electrical, electronic, automotive electrical, materials and other products after temperature and environmental impact changes in high and low temperature tests. , the adaptability of use, suitable for schools, factories, military, research, and other units.
Common faults and solutions for high and low temperature impact test chambers
1. 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 check the wind circulation system to see if the regulating baffle of the wind cycle is normal. On the contrary, it is detected whether the motor of the wind cycle is running normally. If the temperature is too high, you need to set the PID setting parameters. If the temperature rises directly and the temperature is over-protected, then the controller fails and the control instrument must be replaced.
2. When a sudden failure occurs during the test operation, a corresponding fault display prompt appears on the control meter and an audible alarm prompt is displayed. The operator can quickly detect which type of fault is involved in the troubleshooting chapter of the facility's operation and use, and then ask the professional to quickly eliminate the fault to ensure the normal operation of the test. Other environmental testing facilities will have other phenomena in use, and specific phenomena, specific analysis and elimination. The environmental test facilities should also be regularly maintained, the condensers 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 tested, etc. These tasks are essential.
Third, the low temperature can not reach the test index, then you have to observe the temperature change, the temperature is very slow, or the temperature has a tendency to rise after the temperature reaches a certain value, the former will check, whether it will be before the low temperature test Dry the studio, keep the studio dry, then put the test sample into the work room and then test it. If the test sample in the work room is too much, the wind in the workroom cannot be fully circulated. After eliminating the above reasons, It is necessary to consider whether it is a fault in the refrigeration system, so it is necessary to ask the professional of the manufacturer for maintenance. The latter phenomenon is caused by the poor use environment of the facility. The ambient temperature at which the facility is placed and the location where it is placed (the distance between the back of the cabinet and the wall) must meet the requirements (as specified in the operating instructions for the facility).
4. In the thermal test, the actual humidity will reach 100% or the actual humidity will be very different from the target humidity. The value is much lower. The former phenomenon may be caused by the drying of the gauze on the wet bulb sensor, then the wet bulb sensor should be detected. Whether there is water shortage in the water tank, the water level in the water tank is 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 works normally. Another possibility is that the wet ball gauze will be hardened due to the long use time or the purity of the water supply, so that the gauze can not absorb moisture and be dry. The above phenomenon can be eliminated by replacing or cleaning the gauze. The latter phenomenon is mainly because the humidification system 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 of the humidification boiler water level is normal, and whether the water level in the humidification boiler is normal. If everything above is normal, then you should check the electrical control system, which should be repaired by professional maintenance personnel.
Hongzhan has a research institute specializing in the research and development of environmental test equipment. It has mature loop test development methods and laboratories, and gathers a group of outstanding talents and well-known experts in the industry. The strong R&D team leads the domestic loop test technology. Development direction. At present, the company has high and low temperature test chambers with independent intellectual property rights, high and low temperature wet heat test chambers, rapid temperature change test chambers, thermal shock test chambers, three comprehensive test chambers, high and low temperature low pressure test chambers, solar radiation test chambers. The climatic environment test equipment and customized products such as industrial ovens and walk-in high and low temperature damp heat test chambers and high wind speed rain test chambers are at the leading domestic level and international high standards.
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