The explosive gas permeability tester and hydrogen filter tester are based on the testing principle of pressure difference method and are professional gas permeability testers for thin film samples. They are suitable for measuring the permeability and permeability coefficient of flammable and explosive gases of plastic films, composite films, high barrier materials, sheets, and metal foils at various temperatures.
Explosive gas permeameter, hydrogen filter tester


Explosive gas permeameter, hydrogen filter tester
GPT-H21The flammable and explosive gas permeability tester is based on the testing principle of pressure difference method and is a professional gas permeability tester for thin film samples. It is suitable for measuring the permeability and permeability coefficient of flammable and explosive gases of plastic films, composite films, high barrier materials, sheets, and metal foils at various temperatures.
productfeature
lCan simultaneously measure the gas permeability and gas permeability coefficient of the sample
lWide range, high-precision temperature control to meet various testing conditions (optional)
lProvide three testing process judgment modes: proportional, fuzzy mode, and time mode
lThe testing range can be expanded as needed to meet the requirements of high transmittance testing
lSupport testing for flammable and explosive gases
lThe system has built-in combustible gas sensor alarm prompt and safety blowing function
lSelect safe and explosion-proof pipelines and sensors
lAdopting explosion-proof vacuum pumps and outdoor devices for safe gas discharge
lUsing pneumatic clamping for sample, convenient and fast
lThe system adopts electronic intelligent control, and the entire experimental process is automatically completed
lProvide standard membranes for rapid calibration to ensure the accuracy and universality of detection data
lProduct complianceGMPMulti level user permissions
lMicro printer, print notes at any time, test statistics results
lSpecialized computer communication software for real-time display of experiments and analysis and processing of data Data storage
lequipUSBUniversal data interface, convenient for data transmission
Test Principle
The instrument 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.
Test Standard
This instrument complies with multiple national and international standards:GB/T 1038-2000TheISO 15105-1TheISO 2556TheASTM D1434TheJIS K7126-1TheYBB 00082003
test application
| Basic Application | film | Suitable for gas permeability testing of various plastic films, plastic composite films, paper plastic composite films, co extruded films, aluminum plated films, aluminum foil, aluminum foil composite films and other film like materials |
| sheet material | Suitable for gas permeability testing of various sheet materials such as engineering plastics, rubber, and building materials, such asPPSheet materialsPVCSheet materialsPVDCSheet materials, etc |
| Flammable and explosive gases | Suitable for testing the barrier performance of various films against flammable and explosive gases |
| Extended Application | Multiple different gases | Suitable for testing the permeability of various gases, such as oxygen, carbon dioxide, nitrogen, air, helium, etc |
| Biodegradable membrane | Suitable for testing the breathability of biodegradable films, such as starch biodegradable bags, etc |
| Aerospace materials | Suitable for gas permeability testing of aerospace materials, such as helium permeability testing of airship airbags |
| Paper and cardboard | Suitable for breathability testing of composite materials such as paper and paper plastic, such as cigarette wrapped aluminum foil, Tetra Pak packaging sheet, instant noodle paper bowl, disposable paper cup, etc |
| paint film | Suitable for testing the breathability of paint films coated on substrates |
| Fiberglass cloth, fiberglass paper and other materials | Suitable for breathability testing of materials such as fiberglass cloth, fiberglass paper, etc., such as PTFE paint cloth, PTFE high-temperature cloth, fluorosilicone adhesive cloth, etc |
| Cosmetic hose sheet | Suitable for gas permeability testing of various cosmetic hoses, aluminum-plastic tubes, toothpaste tube sheets |
| Various rubber sheets | Suitable for testing the breathability of various rubber sheets, such as testing the breathability of car tires |



