Air Permeability Tester

The air permeability testing machine applies a constant pressure test gas on the surface side of the test piece, and the inner side will be depressurized, resulting in a pressure difference between the inner and outer sides of the test piece. Based on this pressure difference, calculate the transmittance from the slope of the linear change in the ratio of pressure to time. Due to the ability of circulating constant temperature water to vary widely, this testing machine has become a structure capable of measuring test specimens and temperature environments. Compliant with standards: JIS K ISO ASTM