Gas permeability tester(VAC-V1) conforms to Chinese standard GB 1038, international standard ISO 2556, ISO 15105-1 and ASTM D 1434, etc. Applicable for gas permeation property test of plastic film, laminated film, man-made leather and various barrier materials.

Characteristics
Manometric principle, compatible with relative ISO and ASTM standards.
World-famous high precise vacuum sensor ensuring accurate test data.
World-famous brand elements with stable and reliable performance.
Optional dual test modes: Conventional and non-standard.
Super powerful software support, diffusion coefficient, solubility coefficient and permeability coefficient calculated automatically.
World original design. Curvefitting Methodology for predicting diffusion coefficient, solubility coefficient and permeability coefficient at any temperature.
Intelligent parameter set and test operation; Automatization of the whole test process.
Satisfactory data repeatability and small margin for personal error.
Blank test with little systematic error; General performance exceeds similar products throughout the world.
Whole test process monitored and controlled by server, round-the-clock running, and test high efficiency.

Principle
Put a preconditioned specimen between the upper chamber and the lower chamber and clamp it tightly. Firstly apply vacuum to the low-pressure chamber (lower chamber) and then the whole system. When the specified degree of vacuum is reached, shut off the lower test chamber and feed test gas of certain pressure to the upper test chamber (high pressure chamber). Ensure that a constant differential pressure (adjustable) is maintained across the specimen. Hence under the gradient of differential pressure the test gas permeates from the high-pressure side to the low-pressure side. By monitoring and measuring the pressure in the low-pressure side we can get various barrier parameters of the tested specimen.

Technical Data
Test range: 0.1~100, 000 cm3/m2· 24h· 0.1MPa
(normal volume)
Upper limit is not less than 600, 000 cm3/m2· 24h· 0.1MPa
(extension volume)
Note: Different mode volume can be selected by software.
Temp. Control accuracy: Room temperature ~ 50º C
Vacuum resolution: 0.1Pa
Vacuum degree: <20Pa
Test gas: O2, N2, CO2, etc.
Test pressure: -0.1MPa~+0.1MPa
Pressure of gas source: 0.4MPa~0.6MPa
Specimen size: Φ97mm
Transmission area: 38.48cm2 (diameter 70mm)
No. Of specimens: 1 piece
Dimension: 680mm(L) x 565mm(B) x 550mm(H)
Power: AC 220V 50Hz / 60Hz
Net weight: 130kg

Standards
ISO 2556, ISO 15105-1, ASTM D 1434, JIS K 7126-A, GB 1038, YBB 00082003

Configuration
Standard: Mainframe, software, vacuum pump, sampling cutter, vacuum grease, filter paper.
Optional: Blades, vacuum grease, vacuum pump oil, filter paper.
Note: Users provide test gas resource for themselves. It is better to use server instead of the common computer.

For more information, please feel free to contact Labthink Instruments Co., Ltd.
Labthink provides excellent testing equipments and services for Labs, quality and safety control sections of worldwide industries, including pharmaceuticals, foodstuff, cosmetics, packaging, printing, adhesive, automotive, petroleum chemistry, environment, biology, new energy, construction, astronautics and electronics, etc.