Validity checking of humidity field in the temperature-humidity changing chamber

The humidity-heat test is the main method to examine the performance and quality of products such as the device, material, sensor, transducer and various instruments or meters and etc.The humidity field fluctuation is obtained through the humidity test in the temperature-humidity changing chamber, the method for accuracy of the humidity field is proposed,different humidity testing methods are compared, efficient way is put forward to improve the humidity-heat test level.