II. Gas permeability tester testing principles Pre-treatment samples will be well placed in between the upper and lower test chamber, clamping, first low pressure chamber (lower chamber) in vacuum, then vacuum the whole system, when the required vacuum, close the chamber under test, to the testing chamber (pressure chamber) filled a certain pressure test gas, and to ensure that both sides of the specimen to form a constant pressure (adjustable), so the gas will be under the influence of pressure gradient, from low pressure side side of the infiltration, through the monitoring of pressure within the low pressure side handle, to arrive at the test sample of the barrier parameters.

III. Technical parameters of gas permeability tester Test Range: 0.1 ~ 100,000 cm3/m2 ? 24h ? 0.1MPa (normal) Upper limit of not less than 600,000 cm3/m2 ? 24h ? 0.1MPa (extended size) Note: The regular and extended sizes to choose software Temperature range: room temperature ~ 50 ℃ Vacuum Resolution: 0.1Pa Test chamber vacuum: <20Pa Test gas: O2, N2, CO2 and other gases Test pressure:-0.1MPa ~ +0.1 MPa Air pressure: 0.4MPa ≤ P ≤ 0.6MPa Sample size: Φ97mm, through the area 38.46cm2 (70mm diameter) Host Size: 680mm (L) × 565mm (B) × 550mm (H) Power: AC 220V 50Hz Weight: 130kg