VAC-V3 Gas Permeability Tester

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Categories: Gas Permeability Tester

Overview

VAC-V3 is based on the differential pressure method, and is professionally applicable to the 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 could be obtained at one operation
6 distinct or equivalent specimens could be tested simultaneously with individual test results, which is the most efficient instrument so far in the market
6 test cells are divided into two groups with distinct resolution to meet different test requirements, and resolution of group B is as good as 0.01Pa
Wide range and high precision temperature control to meet various test conditions
The instrument comes with two test modes: proportional mode and standard mode
Test range could be extended based on customer requirements to test materials with high permeability
Test results could be easily obtained even at extreme conditions by data fitting function, which could work at any temperature
The instrument could be used to test poisonous, inflammable and explosive gases (customization required)
The instrument is controlled by computer and test process is automatic
Reference film for fast calibration to ensure accurate and universal test data
Equipped with RS2323 port for convenient data transfer

Principle

The pre-conditioned specimen is mounted in the gas diffusion cell as to form a sealed barrier between two chambers. The lower-pressure chamber is firstly evacuated, followed by the evacuation of the entire cell. A flow of gas is thereafter introduced into the evacuated higher-pressure chamber and a constant pressure difference is generated between two chambers. The gas permeates through the specimen from the higher pressure side into the lower side. The gas permeability and other barrier properties of the specimen can be obtained by monitoring the pressure changes in the lower chamber.

Standards

This test instrument conforms to the following standards:
ISO15105-1, 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:

Basic Applications
Films Including plastic films, plastic composite films, paper-plastic composite films, coextruded films, aluminized films, aluminum foils, aluminum foil composite films and many others
Sheeting Including engineering plastics, rubber and building materials, e.g. PP, PVC, and PVDC
Extended Applications
Various Gases Test the permeability of various types of gases, e.g. O₂, CO₂, N₂, Air and He
Inflammable, Explosive Gases Test the permeability of inflammable and explosive gases
Biodegradable Films Test gas permeability of various sorts of biodegradable films, e.g. starch-based biodegradable bags
Materials for Aerospace Usage This instrument can test the Helium permeability of airship gas bags
Paper and Paper Board 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
Paint Films Test gas permeability of substrates coated paint films
Glass Fiber Cloth and Paper Including glass fiber cloth and paper materials, e.g. Teflon paint cloth, Teflon welding cloth, and Teflon silicon rubber cloth
Soft Tube Materials for Cosmetics Including various types of cosmetic tubes, aluminum-plastic tubes and toothpaste tubes
Rubber Sheeting Including various sorts of rubber sheeting, e.g. car tires

Technical Specifications

Specifications	Film Test
Test Range	0.1~50,000 cm³/m²·24h·0.1MPa (Standard volume for group A)
	1.0~500,000 cm³/m²·24h·0.1MPa (Extended volume for group A)
	0.01~1,000 cm³/m²·24h·0.1MPa (Group B)
Number of Specimens	6 pieces with independent test results (group A and group B, each with 3 pieces)
Vacuum Resolution	Group A 0.1 Pa Group B 0.01 Pa
Vacuum Degree of Test Chamber	<20 Pa
Temperature	5°C ~ 95°C
Accuracy	±0.1°C
Specimen Size	Φ97 mm
Test Area	38.48 cm²
Test Gas	O₂, N₂ and CO₂ (outside of supply scope)
Test Pressure	-0.1MPa ~ +0.1MPa
Gas Supply Pressure	0.4MPa ~ 0.6MPa
Port Size	Φ6 mm PU Tubing
Instrument Dimension	1370 mm (L) x 575 mm (W) x 450 mm (H)
Power Supply	220VAC 50Hz / 120VAC 60Hz
Net Weight	160 kg

Configurations

Standard Configurations: Instrument, Constant Temperature Control Device, Professional Software, Round Sample Cutter, Vacuum Grease, Fast Quantitative Filter Paper and Vacuum Pump(Imported)