What are the characteristics and methods of air tightness testing equipment?

Different manufacturers have different characteristics and methods of air tightness testing equipment, and there is no unified standard for air tightness testing industry. Take the air tightness tester (air tightness tester) of Jingcheng Project as an example. According to the conventional model, it can be divided into direct pressure type, differential pressure type, negative pressure type, flow type, quantitative type, positive and negative pressure mixed type, blast type and so on. (see the picture below). In addition, air tightness testing equipment can be customized according to different product characteristics of various industries.

Characteristics of air tightness test equipment in Jingcheng project