GAS PEMEABLITY MEASURING APPARATUS AND GAS PEMEABLITY MEASURING METHOD

摘要

The present invention provides the apparatus for measuring permeability coefficient and method for measuring gas permeability. One first Room, wherein gas permeability measuring apparatus is filled with the measurement gas held in first-class pressure; The second Room of first Room and concatenated; Third compartment and second Room are concatenated; Individual plate includes a through-hole and disconnected from each other to second Room and third compartment; Conductive contact part is arranged in the connection and third compartment of second Room, to control the conduction of the through-hole by individual plate; It is connected to third compartment and third compartment to the exhaust for a vacuum pump; One differential pressure gauge is used to measure a pressure difference and third compartment and second Room. Sample is placed on the connection of the first Room and second Room, and measurement gas is sent to second Room bypass by sample, and conductive contact part at least provides two different conduction in the sequence of display.