Temperature and Humidity Control Technology of Temperature Test Chamber
1 Introduction In modern industry, the processing process of many products needs to be completed in a specific temperature and humidity environment. The performance testing tests such as reliability, weather resistance and service life of many products also need to be carried out in a specific temperature and humidity environment. Taking the benchmark testing of LED lamps as an example, the testing tests related to temperature and humidity include rapid temperature cycle test , alternating damp heat test and early reliability guarantee test, Limit stress sensitivity test, etc., in which the rapid temperature cycle test requires the environment to cycle between high temperature + 85 ℃ and low temperature – 40 ℃ at a temperature change rate of 10 ℃ / min the alternating damp heat test requires the product to be in normal working state, and the sample power supply is switched on and off at the high temperature and high humidity stage in each cycle. The power-off time is ...