VAC-V2 (EX) Gas Permeability Tester

VAC-V2 (EX) Gas Permeability Tester is based on the differential pressure method, and is professionally applicable to the determination of gas transmission rate of common gases as well as toxic, flammable or explosive gases. It is suitable for determination of gas transmission rate, solubility coefficient, diffusion coefficient and permeability coefficient of plastic films, composite films, high barrier materials, sheeting, and aluminum foils at varied temperatures.

Product Features

• Labthink advanced split control system is applied to realize complete separation of the tester mainframe and control module so as to ensure testing safety.
• The tester is suitable for gas transmission rate determination of flammable, explosive or toxic gases.
• The tester has passed TUV safety certification.
• Three independent test cells can test three identical or different samples simultaneously.
• Gas transmission rate, permeability coefficient, solubility coefficient and diffusion coefficient are determined simultaneously.
• Wide-range & high-precision liquid circulation temperature controller can satisfy tests under varied test conditions.
• Dual testing process judgment patterns are available: Proportional Mode and Fuzzy Mode.
• The testing range can be extended according to the needs to meet the requirements for tests of high transmission rate materials.
• Data fitting at any temperature can be performed; test results under extreme conditions can be obtained easily.
• PC-controlled, and the whole test process can be accomplished automatically.
• Reference film is available for rapid calibration to ensure the accuracy and versatility of the test data.
• RS232 universal data port is equipped to facilitate data transfer.
• The tester is compatible with Lystem? Laboratory Data Sharing System with unified management of test results and test reports.

Principle

VAC-V1 (EX) Gas Permeability Tester is designed based on the differential-pressure method. The pre-conditioned sample is mounted in between the upper testing chamber and lower testing chamber and clamped. First, the lower-pressure chamber (i.e., lower testing chamber) is evacuated, followed by the evacuation of the entire system. When the desired vacuum degree is achieved, close the lower testing chamber and test gas of a certain pressure is flushed to the higher pressure chamber (upper testing chamber), and a constant pressure difference (adjustable) is generated between the two testing chambers. The gas permeates through the sample from the high pressure side into the low pressure side due to pressure gradient. The gas permeability parameters of the sample can be obtained by monitoring the pressure changes in the lower testing chamber.

Standards

This test instrument conforms to the following standards:
ISO 15105-1, ISO 2556, GB/T1038-2000, ASTM D1434, JIS K7126-1, YBB 00082003

Applications

This test instrument is applicable to the determination of gas permeability of:

Technical Specifications

Configurations

Standard Configurations

mainframe, thermostat controller, computer, professional software, special sampler, vacuum grease, fast quantitative filter paper, vacuum pump (inlet)

Optional Parts

Sampling blade, vacuum grease, vacuum pump oil, fast quantitative filter paper

Note

The air source port of this tester is a Φ 6 mm polyurethane tube; the gas source is provided by the users.