Gas permeability tester DPG-33D

detector

It is applied to various gas permeation rate detection, such as O2,CO2,N2 and air, etc, in plastic film, composite membrane, High-barrier materials, sheet, metal foil, rubber, etc. Operating principle: Using the principle design of differential pressure method, put treated sample in the middle of upper and bottom chamber in advance. Pressure tightly and seal, pick up the suction to the whole system, after reaching the required vacuum degree, close bottom chamber, fill with certain test gas to high pressure chamber, and adjust upper chamber pressure, keep on two sides of the sample forming constant air pressure gradient difference, the gas is under the action of differential pressure gradient, permeating from high-pressure side (upper chamber) to vacuum side (bottom chamber). Accurately measure vacuum chamber( bottom chamber) intensity of pressure variation, calculate various barrier property parameters of test sample. Fully conform to the standard GB1038,ASTM D1434. Application characteristic High speed vacuum ability, reduce the vacuum time, degassing more thoroughly, high test precision. Short test time, high efficiency; Could extend to test bottle, bag; Power failure protection; A whole-process monitor, automatic recording, can reappear in the whole test process again.