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VAC-V1 (EX) Gas Permeability Tester
VAC-V1 (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. VAC-V1 (EX) is suitable for the determination of gas transmission rate, solubility coefficient, diffusion coefficient and permeability coefficient of plastic films, composite films, high barrier materials, sheeting and foils at varied temperatures.
Product Features
- The tester adopts Labthink's latest split control design, and complete separation between the mainframe and its control module is realized to ensure testing safety.
- It is suitable for the gas permeability tests of flammable, explosive or toxic gases.
- Gas transmission rate, permeability coefficient, solubility coefficient and diffusion coefficient can be determined simultaneously.
- Wide-range and high-precision liquid circulation temperature controller satisfies tests under different test conditions.
- Dual test process judgement modes are available: Proportional Mode and Fuzzy Mode.
- The test range could be extended based on needs to satisfy testing requirements for high permeability materials.
- Data fitting at any temperatures can be performed, and test results of extreme conditions could be easily obtained.
- PC-controlled, and the testing process can be accomplished automatically.
- Reference film is available for rapid calibration to ensure accuracy and versatility of test data.
- RS232 universal data port is equipped for convenient data transfer.
- The Tester is compatible with Lystem? Lab Data Sharing System for uniform 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 reached, 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 formed between the two chambers. The gas permeates through the sample from the high pressure side into the low pressure side due to pressure gradient. The gas permeability properties of the sample can be obtained by monitoring the pressure changes in the lower pressure chamber.
Standards
The tester conforms to multiple national and international standards: ISO 15105-1, ISO 2556, GB/T 1038-2000, ASTM D1434, JIS K7126-1 and YBB 00082003.
Applications
This test instrument is applicable to the determination of gas permeability of:
| Basic Applications |
|---|
Including plastic films, plastic composite films, paper-plastic composite films, coextruded films, aluminized films, aluminum foils, aluminum foil composite films and many others |
Including engineering plastics, rubber, building materials, and other sheeting materials, e.g. PP sheeting, PVC sheeting and PVDC sheeting, etc. |
| Extended Applications |
Test the permeability of various types of gases, e.g. O2, CO2, N2, Air and He |
Test the permeability of inflammable and explosive gases |
Test gas permeability of various sorts of biodegradable films, e.g. starch-based biodegradable bags |
This instrument can test the Helium permeability of airship gas bags |
Test gas permeability of paper and paper-plastic composite materials, e.g. aluminized paper for cigarette packages, Tetra Pak sheeting, paper bowls for instant noodles and disposable paper cups |
Test gas permeability of substrates coated paint films |
Including glass fiber cloth and paper materials, e.g. Teflon paint cloth, Teflon welding cloth, and Teflon silicon rubber cloth |
Including various types of cosmetic tubes, aluminum-plastic tubes and toothpaste tubes |
Including various sorts of rubber sheeting, e.g. car tires |
Technical Specifications
| Specifications | Film Test |
|---|---|
| Test Range | 0.05 ~ 50,000 cm3/m2·24h·0.1MPa (Common) |
| Upper limit is no less than 500,000 cm3/m2·24h·0.1MPa (extended volume) | |
| Number of Specimens | 1 |
| Vacuum Resolution | 0.1 Pa |
| Vacuum Degree of Test Chamber | <10 Pa |
| Temperature | 5℃～95℃ |
| Accuracy | ±0.1°C |
| Specimen Size | Φ97 mm |
| Test Area | 38.48 cm2 (Φ70 mm) |
| Test Gas | H2, O2, N2 and CO2 (outside of supply scope) |
| Test Pressure | 10kPa~200kPa (Common) |
| Gas Supply Pressure | 0.4 MPa~0.6 MPa |
| Port Size | Φ6 mm PU Tubing |
| Instrument Dimension | 500 mm (L) x 575 mm (W) x 450 mm (H) |
| Power Supply | 220VAC 50Hz |
| Net Weight | 50 kg |
Configurations
- Standard Configurations
- Mainframe, Thermostatic Controller, PC, Professional Software, Professional Sampler, Vacuum Grease, Fast Quantitative Filter Paper and Vacuum Pump
- Optional Parts
- Sampling Blades, Vacuum Grease, Vacuum Pump Oil and Fast Quantitative Filter Paper
- Note
- The gas source port of the tester is a Φ6 mm PU tube. Gas sources and distilled water are to be prepared by the user.
We can help you select or customize the proper unit for your test requirements.
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