Permeability tester VAC-V2

gas permeabilitytransmission ratefor oxygen transmission rate

Overview
VAC-V2 is based on the differential pressure method and is applicable to determination of gas transmission rate as well as solubility coefficient, diffusion coefficient and permeability coefficient of plastic films, composite films, high-barrier materials, sheeting and aluminum foils.

Product Features

• Gas transmission rate, solubility coefficient, diffusion coefficient and permeability coefficient of the specimen can be obtained in a single operation
• Up to three distinct or equivalent specimens can be tested individually with independent results in one operation
• Wide range and high-precision temperature and humidity control to meet various test conditions
• Two test modes: proportional mode and standard mode
• Test range can be extended to evaluate materials with high permeability
• Data fitting function allows obtaining reliable results even under extreme conditions and at any temperature
• Instrument can be customized to test poisonous, inflammable and explosive gases (customization required)
• Computer-controlled with automatic test process
• Reference film for fast calibration to ensure accurate and universal test data
• Standard RS232 port for convenient data transfer
• Supports Lystem™ Lab Data Sharing System for unified management of test results and reports

Principle
The pre-conditioned specimen is mounted in the gas diffusion cell to form a sealed barrier between two chambers. The lower-pressure chamber is evacuated first, followed by evacuation of the entire cell. Gas is introduced into the higher-pressure chamber to generate a constant pressure difference; gas permeates through the specimen into the lower chamber. Gas permeability and other barrier properties are obtained by monitoring pressure changes in the lower chamber.

Standards
ISO 15105-1, ISO 2556, GB/T 1038-2000, ASTM D1434, JIS K7126-1, YBB 00082003

Applications

• Basic applications — Films: plastic films, plastic composite films, paper-plastic composite films, co-extruded films, aluminized films, aluminum foils, aluminum-foil composite films and similar materials
• Basic applications — Sheeting: engineering plastics, rubber and building materials (e.g. PP, PVC, PVDC)
• Extended applications — Various gases: permeability testing for O2, CO2, N2, Air, He
• Extended applications — Inflammable/explosive gases: testing for flammable and explosive gases (customization may be required)
• Extended applications — Biodegradable films: e.g. starch-based biodegradable bags
• Extended applications — Aerospace materials: helium permeability testing for airship gas bags
• Extended applications — Paper and board: aluminized paper for cigarette packages, Tetra Pak sheeting, paper bowls, disposable paper cups
• Extended applications — Paint films, glass-fiber cloth/paper, cosmetic soft-tube materials, rubber sheeting: substrates and sheet materials used in coatings, textiles, cosmetic tubes and rubber sheets

Configurations

• Standard configurations: instrument, constant temperature control device, professional software, round sample cutter, vacuum grease, fast quantitative filter paper and imported vacuum pump
• Optional parts: blades for sample cutter, vacuum grease, vacuum pump oil, fast quantitative filter paper
• Note: 1) Gas supply port is Φ6 mm PU tubing; 2) Customers need to provide gas supply and distilled water

Technical specifications

• Test range: 0.05 ~ 50,000 cm3/m2·24h·0.1MPa (standard volume); at least 500,000 cm3/m2·24h·0.1MPa (extended volume)
• Number of specimens: 3 (with independent test results)
• Vacuum resolution: 0.1 Pa
• Vacuum degree of test chamber: <20 Pa
• Temperature range: 5°C ~ 95°C
• Temperature accuracy: ±0.1°C (standard)
• Humidity range: 0% RH, 5% RH ~ 90% RH (automatic humidification function under 15°C ~ 40°C can be customized)
• Humidity accuracy: ±1% RH
• Specimen size: Φ97 mm
• Test area: 38.48 cm2
• Test gas: O2, N2 and CO2 (outside of supply scope)
• Test pressure: 10 kPa ~ 200 kPa
• Gas supply pressure: 0.4 MPa ~ 0.6 MPa
• Port size: Φ6 mm PU tubing
• Instrument dimensions: 760 mm (L) x 575 mm (W) x 450 mm (H)
• Power supply: 220 VAC 50 Hz / 120 VAC 60 Hz
• Net weight: 88 kg