Permeability tester VAC-V2 (EX)-H

transmission ratefor oxygen transmission ratefor film

Overview
VAC-V2 (EX)-H Gas Permeability Tester uses the differential-pressure method to measure gas transmission rate and related coefficients for common and hazardous gases. It is intended for plastic films, composite films, high-barrier materials, sheeting and aluminum foils across variable temperatures.

Product Features

• Split control architecture separates mainframe and control module for enhanced operational safety.
• Designed to test permeation of flammable, explosive or toxic gases under controlled conditions.
• Performs permeability tests at normal and elevated pressures.
• Three independent test cells allow simultaneous testing of three identical or different samples.
• Simultaneous determination of gas transmission rate, permeability coefficient, solubility coefficient and diffusion coefficient.
• Wide-range high-precision liquid circulation thermostat enables testing across varied temperature conditions (5℃–95℃, ±0.1℃).
• Dual test-process judgment modes: Proportional and Fuzzy.
• PC-controlled operation with automatic test sequence and data logging; RS232 port for data transfer and Lystem™ compatibility for laboratory data management.
• Reference film available for rapid calibration and result verification.

Principle
The instrument mounts a preconditioned specimen between an upper and a lower test chamber. The lower chamber is evacuated and then the system is brought to the target vacuum. After sealing the lower chamber, test gas is introduced under controlled pressure into the high-pressure chamber, establishing a constant, adjustable pressure difference. Gas permeates from the high-pressure side to the low-pressure side; permeability parameters are calculated 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 – Films: Plastic films, composite films, paper-plastic laminates, coextruded films, metallized films and aluminum foil composites.
• Basic – Sheeting: Engineering plastics, rubber sheets and building-material panels (e.g. PP, PVC, PVDC sheets).
• Extended – Various gases: Tests for O2, CO2, N2, air, He, H2, etc.
• Extended – Hazardous gases: Permeability testing for flammable, explosive or toxic gases.
• Extended – Special materials: Biodegradable films, aerospace materials (e.g. helium testing for gas envelopes), paper and paperboard composites, coated substrates, glass-fiber fabrics and papers, cosmetic laminate tubes, rubber sheets.

Configurations

• Standard: Mainframe, liquid-circulation thermostat controller, professional software, special sampler, vacuum grease, rapid quantitative filter papers, vacuum pump (inlet).
• Optional: Sampling blade, additional vacuum grease, vacuum pump oil, rapid quantitative filter papers.
• Note: Gas supply inlet is a 1/8" metal tube; gas sources must be provided by the user.

Technical Specifications

• Test range (standard pressure 0.1 MPa): 0.05–50,000 cm3/m2·24h·0.1MPa
• Test range (high pressure 0.1 MPa): 0.05–1,000 cm3/m2·24h·0.1MPa
• Number of specimens: 3 (independent data)
• Vacuum resolution: 0.1 Pa
• Vacuum degree of test chamber: <10 Pa
• Temperature range: 5℃–95℃; accuracy ±0.1℃
• Specimen size: Φ50 mm; test area: 5 cm2
• Test gases: H2, O2, N2, CO2 (not supplied)
• Test pressure: 100 kPa–3000 kPa
• Gas supply pressure: 0.5 MPa–0.6 MPa
• Port size: 1/8" metal tube
• Dimensions: 760 mm (L) × 575 mm (W) × 450 mm (H)
• Power supply: 220 VAC 50 Hz
• Net weight: 88 kg