[Scope of Application] The micro permeability tester is a high-precision experimental testing equipment that integrates mechanical and electronic components. It is suitable for testing the permeability of materials with low permeability under a certain pressure. It is applied to products with gas flow requirements, such as acoustic film materials, waterproof breathable films, mixing paper, micro films, medical films, and packaging films. Working principle Measure the airflow rate passing vertically through the specimen under specified pressure differential conditions. [Instrument characteristics] High precision pressure sensor with high accuracy, directly displaying test pressure and flow rate. Chinese color touch screen, menu style operation, simple parameter setting, and full display of dynamic testing. Save, retrieve, and statistically analyze test results, and print them out directly without the need for conversion. ● Pneumatic testing fixtures, quick clamping of samples;