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Help CenterWVTR-9003 Water Vapor Permeability Tester
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Application:
WVTR-9003 is based on the electrolytic 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.
Features:
— Electrolytic sensor method
— Patent technology
— Film and package test
— one specimen test
— One-button test, test automatically in whole process
— Multiple test modes optional
— Data curves display
— Computer control
— Digital flow adjustment
— Chamber temperature sensor embedded in
— 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 electrolytic 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 electrolytic sensor which generates the proportional signal, so water vapor transmission rate will be obtained by calculating the sensor signal.
Technical indexes：
| Test range： | |
| Film | 0.001-52 g/m2·24h (Standard) |
| 0.01-1100 g/m2·24h (Optional) | |
| Resolution | 0.001 g/m2·24h |
| Package | (optional) |
| 0.0001~0.5 g/pkg·d | |
| Resolution | 0.00001g/pkg·d |
| Specimen amount | one piece |
| 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 | 50 cm2 |
| Specimen size | |
| Film | size |
| 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 | 330 mm * 600 mm * 330mm |
| Net weight | 28kg |
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