Gas Permeability Tester of Plastic Film

Gas Permeability Tester of Plastic Film and Sheeting N500 2.0 is designed in accordance with differential pressure method. 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 the two chambers. The gas permeates through the specimen from higher pressure side into the lower pressure side. The gas permeability and other barrier properties of the specimen can be obtained by monitoring the pressure changes in the lower chamber.

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Technical Specification

Items	Technical Parameters
Standard	ISO 2556-1974, ISO 15105-1-2007, ASTM D1434, JIS K7126-1-2006
Testing range	0.02～50000 cm3/（m2·24h·0.1MPa）
Testing accuracy	0.001 cm3/（m2·24h·0.1MPa）
Testing temperature range	15～60℃
Temperature precision	±0.1℃
Vacuum degree	＜20Pa
Vacuum resolution	0.01Pa
Test pressure	0.1MPa
Test gas	O2, CO2, N2, etc
Through area	50.24 cm²
Sample size	Φ110 mm
Sample thickness	≤2mm
Testing Chamber	One chamber

Advantage

◆ Provide national standard materials to calibrate and verify the instrument to ensure the accuracy, versatility and authority of the test data.

◆ Five sets of curves of temperature, upper cavity pressure, lower cavity pressure, pressure difference change, and penetration are displayed in real time. The curves with conceal function, support query function for background data.

◆ Automatic pressure maintaining technology, which automatically maintains the pressure difference on both sides of the sample (the pressure difference can be adjusted arbitrarily).

◆ Temperature control: water-cooled temperature control technology, automatic heating and cooling. No needing external temperature control device to avoid the disadvantages of large size and multiple failures. High measurement accuracy, accurate to 0.1℃.

◆ Measurement precision up to 0.01 cm³/（m²·24h·0.1MPa）, can test high barrier materials, such as aluminum foil.

◆ By adding package-testing accessories, can test the gas permeability of bottles, bags, bowls and other containers.

◆ Users are divided into multiple levels of system administrators, instrument administrators, auditors, and operators.

◆ With audit trail function (test trail, log trail), every data change is recorded to ensure the safety and integrity.

◆ The sensor has an automatic protection function that exceeds the range to avoid damage to important sensors when the instrument fails.

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