In the above, we explained the performance measurement method of the high and low temperature test chambers for temperature performance measurement and test load conditions. Let's follow up on this issue.
1. Installation of temperature sensor: The temperature measuring sensor is located at each corner of the high and low temperature test chamber and the center of the working space. We have the factory inspection standard of the nine-point inspection instrument in the industry, so at least 9 sensors should be placed in the box. The temperature distribution of the no-load test chamber should not be affected, and the actual arrival temperature should be recorded. For the confirmation inspection system, the data should be recorded at least once every minute. The data recording device of the test chamber monitoring sensor should be independent of the test chamber control system.
2. Environment of the test area: The environment around the high and low temperature test chambers may affect the conditions in the test chamber. The performance of the test chamber shall be determined under standard atmospheric conditions. The following requirements shall be considered: the surrounding conditions of use shall not be directly Exposure to sunlight, should not be exposed to electromagnetic interference, should be placed horizontally, should be rotated in the absence of mechanical vibration and acoustic vibration, should consider the test box manufacturer's recommendations on electricity and environmental conditions, details to Beijing The “site confirmation letter†issued by Yashilin Testing Equipment Co., Ltd. is the main one.
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