Product

Systester Instruments Co., Ltd.

Water Vapor Permeability Tester WVTR-926
Application

WVTR-926 is based on the infrared sensor method and available for the water vapor permeability test of flexible films, sheeting and packages.
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.
Feather

(1) Infrared sensor method
(2) Own technology
(3) Film and package test
(4) One specimen test
(5) One-button test, test automatically in whole process
(6) Multiple test modes optional
(7) Data curves display
(8) Computer control
(9) Digital flow adjustment
(10) Chamber temperature sensor embedded in
(11) Environment temperature and humidity sensor inside
(12) Chambers water bath technology
(13) Unit based on embedded system,24bit Δ-Σ AD
(14) Pressure, ppm water sensor and temperature overload protection
(15) Traceable reference film calibration
(16) 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.
Configuration

Standard configuration: Main machine, computer, professional software, data expansion card, communication cable, thermostat controller, nitrogen cylinder precision pressure reducing valve, sampler, Vacuum grease, sampling knife
Optional accessories: container test aids, standard membrane, vacuum grease, sampling knife, DSM laboratory data management system.
Note: Product technical specifications are subject to change without notice. SYSTESTER reserves the right to modify and final interpretation!
Main Technical Parameters

Technology table
Test range Film: 0.001-52 g/m2·24h (Standard)
0.01-1100 g/m2·24h (Optional)
Resolution 0.001 g/m2·24h
Test range Package:
0.0001~0.5 g/pkg·d
Resolution 0.00001g/pkg·d
Specimen amount: One piece
Temperature range 5℃~95℃
Temperature accuracy ±0.1℃
Humidity range 0%RH,35%RH-90%RH,100%RH
Humidity accuracy ±1%RH
Sample size Film
size :≥150mm*94mm; thickness: ≤ 1mm
Package
max size: D120mm * 400mm
Test area 50cm
Carrier gas 99.999% Nitrogen
carrier flow 0~200ml/min
Gas interface 1/8inch
Dimension 330mm(L) * 600mm(W) * 330mm(H)
Power supply AC 220V 50Hz
Net weight 28kg
Standards

ISO 15106-3, GB/T 21529, DIN 53122-2, YBB 00092003

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