Gas transmission rate test plan
Gas permeability test program application range:
The GTR-7001 Oxygen Permeability Tester uses the vacuum method to determine the gas permeability and gas permeability coefficient of various food packaging materials, medical packaging materials, high barrier materials, and metal foils.
Testable samples: plastic film, plastic composite film, paper-plastic composite film, co-extruded film, aluminized film, aluminum foil composite film, Tetra Pak packaging, instant noodle packaging, medical aluminum foil, infusion bag, artificial skin; aerospace airship airbag, biological Degradable film, battery separator, separation membrane, rubber, tire, cigarette aluminum foil, PP sheet, PET sheet, PVC sheet, PVDC sheet, etc.
Test gas: oxygen, carbon dioxide, nitrogen, air, helium, hydrogen (H2), methane, propane, butane, ammonia, and the like. Note: When the test gas is a dangerous gas, special instructions must be given before sale! (eg hydrogen (H2), methane, propane, butane, ammonia, etc.)
Gas transmission rate test program test principle:
Place the processed sample between the upper and lower test chambers, first vacuum the low pressure chamber (lower chamber), and then pump the whole system to the true system. After reaching the specified vacuum, close the lower chamber to the high pressure chamber (upper chamber). Fill the test gas with a certain pressure to ensure a constant pressure difference (adjustable) on both sides of the sample. The gas will penetrate from the high pressure side to the low pressure side under the pressure gradient, and monitor the pressure change in the low pressure side. Obtain the barrier parameters of the test sample.
Main features of the gas transmission test program:
Vacuum test principle, fully in line with national standards, international standards
Independent patent technology with independent intellectual property rights
Three-chamber independent test, can produce independent, combined results
Computer control, fully automatic test, one-button operation
High-precision imported sensor ensures accuracy and repeatability
Original imported piping system, more suitable for testing of extremely high barrier materials
Original imported control device, reliable system operation and long life
Original imported operating parts, the pursuit of the ultimate user experience
Original imported temperature and humidity sensor to accurately indicate test conditions
Gas permeability, permeability coefficient and other parameters can be obtained in one test
Wide range of three-chamber water bath temperature control technology to meet different conditions
The system has a built-in 24-bit precision Δ-Σ AD converter for high-speed and high-accuracy data acquisition, resulting in high accuracy and wide range.
Embedded system core, system long-term stability, good repeatability
Flexible and powerful expansion capabilities of embedded systems to meet a variety of test requirements
A variety of test modes are available to meet various standards, non-standard, and quick test
The test process curve shows intuitive, objective, clear and transparent
Support vacuum calibration, standard membrane calibration and other modes; convenient and fast, low cost of use
Standard communication interface, data standardization
Supports laboratory data management system, enabling unified data management and convenient data sharing (optional)
Technical indicators:
Gas permeability test program technical indicators:
Test range: 0.01 to 190,000 cm3/m2•24h•0.1MPa (standard configuration)
Resolution: 0.001 cm3/m2•24h•0.1MPa
Number of samples: 1~3 pieces, each independent
Vacuum resolution: 0.1 Pa
Temperature control range: 5 ° C ~ 95 ° C
Temperature control accuracy: ±0.1 °C
Sample thickness: ≤5mm
Sample size: 150 mm × 94 mm
Test area: 50 cm2
Test gas: oxygen, nitrogen, carbon dioxide, methane, helium, etc. (air source user-supplied)
Test pressure range: -0.1 MPa to +0.1 MPa (standard)
Interface size: Ф 8 mm
Dimensions: 730 mm (L) × 510 mm (B) × 350 mm (H)
Power supply: AC 220V 50Hz
Net weight: 68 kg
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