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Help CenterWVTR-AE3 Water Vapor Permeability Tester (Electrolytic Method)
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Introduction
It is suitable for testing the water vapor permeability of high barrier materials such as plastic film, aluminum foil plastic film, waterproof material and metal foil. Expandable test bottles, bags and other containers are availble.
Testing principles and product descriptions
Using the electrolytic sensor method to test the principle, nitrogen with stable relative humidity flows in one side of the film, dry nitrogen flows in the other side of the film; Due to the existence of humidity gradient, water vapor diffuses through the film from the high humidity side to the low humidity side. On the low humidity side, the water vapor passing through is carried to the sensor by the flowing dry nitrogen, and the same proportion of electrical signals will be generated when entering the sensor. Through the analysis and calculation of the sensor electrical signals, the water vapor transmittance and other parameters of the sample can be obtained. For the packaging container, dry nitrogen is flowing inside the container, and the outside of the container is in a state of high humidity.
Reference standards
YBB 00092003, GBT 26253, ASTM F1249, ISO 15106-2, TAPPI T557, JIS K7129ISO 15106-3, GB/T 21529, DIN 53122-2, YBB 00092003
Configuration
System configuration: test host, computer, test software, communication cable, water absorption trap, sampler, nitrogen bottle precision pressure reducing valve, vacuum seal grease, printer
Optional: Container test accessories and container temperature control device
Note: Air source and distilled water (Prepared by the user)
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