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Water Vapor Permeability Tester Humidity Transmittance Test Lab Test Equipment

Application
WVTR-2102 is based on the infrared sensor method and available for the water vapor permeability test of flexible films, sheeting and packages. It can test 3 specimens in one operation but with one aver result of the specimens.
Films:
Plastic films, aluminum foil, aluminized films, plastic composite films, paper-plastic composite films, coextruded films, aluminum foil composite films and many others.
Packages:
Plastic, rubber, paper, paper-plastic composite, glass and metal packages, e.g. red wine bottles, blister, various plastic bottles, Coke bottles, peanut oil packages, Tetra Pak materials, vacuum bags, metal three-piece cans, plastic packages for cosmetic, soft tubes for toothpaste, jelly and yogurt cups.

Water Vapor Permeability Tester Humidity Transmittance Test Lab Test Equipment
Features
 Infrared sensor method
 Patent technology
 Film and package test
 3 specimens test simultaneously but with one aver result
 One-button test, test automatically in whole process
 Multiple test modes optional
 Data curves display
 Computer control
 Digital flow adjustment
 3 Chambers with 3 temperature sensors
 Environment temperature and humidity sensor inside
 Chambers water bath technology
 Unit based on embedded system,24bit Δ-Σ AD
 Pressure, ppm water sensor and  temperature overload protection
 Traceable reference film calibration
 Supports DSM system (DSM, lab data management system)

Principles
Film:
The specimen is clamped between the upper and lower chamber, the upper chamber is purged by high humidity nitrogen stream, and the other side of specimen, lower chamber is purged by a stream of dry nitrogen, due to the effect of water concentration gradient at two sides of the specimen, water molecules will permeate through the specimen into the dry nitrogen side, penetrated water molecules will be carried to the infrared sensor which generates the proportional signal, so water vapor transmission rate will be obtained by calculating the sensor signal.
Package:
The package is mounted on the lower chamber, the outside of the package is specified relative humidity, the inside of the package is purged by a dry nitrogen stream, water vapor will permeate through the wall into the inside of the package, penetrated water molecules will be carried to the infrared sensor which generates the proportional signal, so water vapor transmission rate will be obtained by calculating the sensor signal.

Water Vapor Permeability Tester Humidity Transmittance Test Lab Test Equipment
Technical indexes
Test range：
Film:  0.001-20 g/m2·24h (Standard)    
                    0.01-400 g/m2·24h (Optional)
                    Resolution: 0.001 g/m2·24h
             Package: (optional)
0.0001~0.3 g/pkg·d              
Resolution: 0.00001g/pkg·d
Specimen amount: 3 specimens with one aver result                              
Temperature range: 5C – 95C
Temperature accuracy: ±0.1C
Humidity range: 0%RH,35%RH-90%RH,100%RH, standard condition 90%RH
Humidity accuracy: ±1%RH
Test area: 50cm2
Specimen size:
                Film:  size: >=150mm * 94mm
Thickness: less 5mm
                Package:
                       Max size: D120mm * 400mm                      
Carrier gas: 99.999% Nitrogen
Carrier flow: 0~200 ml/min
Gas interface: 1/8inch
Power supply: AC 220V 50Hz
Dimension: 730 mm * 590 mm * 350mm
Net weight: 56kg

Standard
ISO 15106-2, ASTM F1249, GB/T 26253-2010, TAPPI T557, JIS 7129

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