Gas permeability tester

Product Introduction:

Gas Transmittance Tester GTR-V3Based on the principle of differential pressure testing, it is professionally suitable for measuring the gas permeability, solubility coefficient, diffusion coefficient, and permeability coefficient of plastic films, composite films, high barrier materials, sheets, and metal foils at various temperatures. The three permeation chambers configured in the system can be tested simultaneously; The testing process is compatible with multiple national and international standards such as GB, ISO, ASTM, etc.

Technical advantages:

● Equipped with standard membrane calibration function and sensor external calibration function;

Real time monitoring of testing status, saving testing status throughout the process, achieving reproducibility of all testing data curves, and facilitating post evaluation of testing progress;

Open database system for easy data analysis

● Can simultaneously measure the gas permeability, solubility coefficient, and diffusion coefficient of the sample

Three independent testing chambers can simultaneously test three identical or different samples

Wide range, high-precision temperature and humidity control to meet various testing conditions

● Provide a proportional and fuzzy dual test process judgment mode

The testing range can be expanded as needed to meet the requirements of high transmittance testing

● Can perform data fitting at any temperature, easily obtaining experimental results

● Support testing for toxic gases and flammable and explosive gases (requires modification)

The system adopts computer control, and the entire experimental process is automatically completed

● Provide standard membranes for rapid calibration to ensure the accuracy and universality of detection data

Equipped with RS232 universal data interface for convenient data transmission

Technical Specifications:

Testing principle:

The gas permeameter GTR-V3 adopts the principle of differential pressure testing, placing the pre processed sample between the upper and lower testing chambers and clamping it. Firstly, perform vacuum treatment on the low-pressure chamber (lower chamber), and then evacuate the entire system; After reaching the specified vacuum degree, close the lower chamber of the test, fill the high-pressure chamber (upper chamber) with a certain pressure of test gas, and ensure that a constant pressure difference (adjustable) is formed on both sides of the sample; In this way, gas will permeate from the high-pressure side to the low-pressure side under the action of pressure gradient. By monitoring and processing the pressure inside the low-pressure side, various barrier parameters of the tested sample can be obtained. Compliant with standards such as GB1038 and ASTM D1434.

Reference standard:

YBB 00082003、GB/T 1038、ASTM D1434、ISO 2556、ISO 15105-1、JIS K7126-A