WVTR 926 is based on the electrolytic sensor method and available for the water vapor permeability test of flexible films, sheeting and packages.
WVTR-398A is based on the humidity sensor detection method and available for the water vapor permeability test of heat exchange membranes, nonwoven fabrics and flexible barrier materials. It can test 6 specimens in one operation with independent results.
WVTR-398A is based on the humidity sensor detection method and available for the water vapor permeability test of heat exchange membranes, nonwoven fabrics and flexible barrier materials. It can test 6 specimens in one operation with independent results.
The specimen is clamped between the upper and lower chamber, the upper chamber is high humidity side, and the other side of specimen, lower chamber is purged by a stream of dry gas, due to the effect of water concentration gradient at two sides of the specimen, water molecules will permeate through the specimen into the dry gas side, penetrated water molecules will be carried to the relative humidity sensor which generates the proportional signal, so water vapor transmission rate will be obtained by calculating the sensor signal.
Test range：
5- 6500 g/m2·24h (Standard)
500-100,000 g/m2·24h (optional)
Resolution: 0.001 g/m2·24h
Specimen Amount: 6 specimens, independent
Temperature Range: 5C–90C (Water bath)
Temperature Accuracy: ±0.1C
Test Humidity: 100%RH (Standard)
Humidity Accuracy: ±1%RH
Test Area: 13cm2 (Standard)
Specimen Size: >=150mm * 94mm
Thickness: less 1mm
Carrier Gas: dry air, or 99.999% Nitrogen
Carrier Flow: 0~200ml/min
Gas Interface: 1/8inch
Power Supply: AC 220V 50Hz
Dimension: 650 mm(L) * 690 mm(W) * 415mm(H)
Net Weight: 86kg
ASTM E398, ASTM D 6701, ISO 15106-1, TAPPI T523, JIS K7129
Main Unit, Computer, W-TRANS Software, Temperature Controller, Tank Regulator, PCIE Card, Communication Cable, Sample Cutter, Vacuum Grease.
Reference Film, Vacuum Grease, Sample Cutter, DSM System.
