Water Vapor Permeability Testing Machine Of ERV Membrane Permeate Rate 

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  • Date Listed24/10/2019

Water Vapor Permeability Testing Machine Of ERV Membrane Permeate Rate

Product Details

Application:
WVTR-398B 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.


Water Vapor Permeability Testing Machine Of ERV Membrane Permeate Rate

Features:

featuresWeighing methodDual weighing modules, patent technology18 specimens, continuously testOne-button test, test automatically in whole processMultiple test modes optionalTemperature and humidity auto controlData curves displayComputer controlEnvironment temperature and humidity sensor insideUnit based on embedded system,24bit Δ-Σ ADTraceable reference film calibrationSupports DSM system (DSM, lab data management system)


Principles:
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.


Water Vapor Permeability Testing Machine Of ERV Membrane Permeate Rate

Technical indexes:

Test range5 - 6500 g/m2·24h (Standard)Resolution 0.001 g/m2·24hSpecimen amount 1 specimenTemperature range 5C–95CTemperature accuracy ±0.1CHumidity range 100%RH (Standard)Humidity accuracy ±1%RHTest area 38 cm2 (Standard)Specimen size >=150mm * 94mmThickness less 3mmCarrier gas Dry Air, or 99.999% NitrogenCarrier flow 0~200 ml/minGas interface 1/8inchPower supplyAC 220V 50HzDimension330mm(L) * 600mm(D) * 330mm(W)Net weight30kg
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