Flexible Packaging/Medicel Mask Water Vapor Permeability Testing Machine Lab Test
Application
WVTR  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 with independent results.
Flexible Packaging/Medicel Mask Water Vapor Permeability Testing Machine Lab Test
Features
| fearures | — Infrared sensor method |
| — Own technology | |
| — Film and package test | |
| — 3 specimens test simultaneously and independently | |
| — 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 vapor transmission rate will be obtained by calculating the sensor pan>
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 vapor transmission rate will be obtained by calculating the sensor pan>
Flexible Packaging/Medicel Mask Water Vapor Permeability Testing Machine Lab Tes
Technical indexes
| Test range： | Film: |   0.005-42 g/m2·24h (Standard)     |
| 0.05-1000 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, independent                               | |
| 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 7129Â
Configuration
Delivery:Â Â Main unit, computer, W-TRANS software, temperature controller, tank regulator, PCIE card, communication cable, sample cutter, vacuum grease.
Optional:Â Â Package fixtures, reference film, vacuum grease, sample cutter, DSM system.
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