WPT-201 Water Vapor Permeability Tester is manufactured based on the infrared sensor method and is applicable to test the water vapor transmission rate of high barrier materials, film sheetings.
WPT-201 Water Vapor Permeability Tester is manufactured based on the infrared sensor method and is applicable to test the water vapor transmission rate of high barrier materials, film sheetings.
The test specimen is mounted in the diffusion cell, which is subsequently divided into a dry chamber and a controlled-humidity chamber. The dry side of the specimen is swept by a flow of dry nitrogen, and the water vapor permeating through the specimen from the controlled-humidity chamber is carried by dry nitrogen to the infra-red sensor where proportion electrical signals will be generated. The water vapor transmission rate is obtained by analyzing and calculating the electrical signals. For package samples, dry nitrogen flows inside the package, and moisturized nitrogen flows outside.
ISO 15106-2, ASTM F1249, TAPPI T557, JIS K7129, GB/T 26253-2010, YBB 00092003-2015
Test Range | 0.001 ~ 100 g/m²•24h (film and sheet) |
Number of Specimen | 1 PCS with independent test results |
Accuracy | 0.001 g/m²•24h |
Resolution | 0.001 g/m²•24h |
Range of Temperature | 10°C ~ 60°C (Standard) |
Accuracy of Temperature | ±0.1°C |
Range of Humidity | 30%RH ~ 90%RH |
Accuracy of Humidity | ±1%RH |
Test Area | 50.24cm² |