Looking at the development of high and low temperature test chamber industry, it has been going on for decades. Nowadays, more enterprises put the quality of products in the front position. As a test equipment for product quality appraisal evaluation, it is inevitable that more and more enterprises need and Pay attention to, below, Xiaobian will explain to you the things that high and low temperature test chambers need to understand before buying:
1. The insulation resistance between the high and low temperature test box terminals to the metal casing of the box should be: 2MΩ or more in cold state, 1MΩ or more in hot state (measured with 500V, accuracy is 1.0 Megohmmeter) and can withstand 50Hz AC. Withstand voltage test of voltage 1500V and pressure time 5s;
2. The insulation material should be resistant to high temperatures and have flame retardant properties. The insulation layer should have sufficient thickness to ensure that the temperature of the externally accessible parts of the high and low temperature test chamber is not higher than 50 °C in the high temperature test, and not in the low temperature test and the ambient temperature is 15 ° C ~ 35 ° C, and the relative humidity is ≤ 85%. There should be condensation;
3. The difference between the working chamber wall temperature and the working space temperature of the high and low temperature test chamber: the high temperature level should not be higher than 3% of the test chamber temperature, and the low temperature level should not be higher than 8% of the test chamber temperature;
Among them, high and low temperature test chambers belong to a kind of test equipment in the simulated environment. They are indispensable test equipment for electronics, plastics, hardware, printing and other industries. Then we need to understand and pay attention to when purchasing this equipment.
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