WVTR-2502 is based on the weighing method and available for the water vapor permeability test of plastic films, aluminum foil, aluminized films, plastic composite films and many others.

Features

Weighing method

Patent technology

3 specimens, continuously test

One-button test, test automatically in whole process

Multiple test modes optional

Temperature and humidity auto control

 Data curves display

Computer control

Environment temperature and humidity sensor inside

Unit based on embedded system,24bit Δ-Σ AD

Traceable reference film calibration

Supports DSM system (DSM, lab data management system)

Principles

Test dishes filled with distilled water in a controlled dry atmosphere, a constant humidity difference is generated between two sides of the test specimen, the water vapor permeates through the specimen and into the dry side, water vapor transmission rate and other parameters can be obtained  by measuring the weight changes of the test dish in different time.

Technical indexes

Test range：0.1~19,000 g/m²·24h (standard)

Test accuracy: 0.01 g/m²·24h

Specimen amount: 3 specimens, independent                              

Temperature range:  15C – 65C

Temperature accuracy: ±0.1C

Differential humidity range: Room%RH-97%RH,standard condition 90%RH

Humidity accuracy: ±1%RH

Test area: 28.26 cm²

Specimen size: Φ76 mm

Air velocity:  0.5~2.5 m/s (customization available)

Test chamber volume: 36L

Gas supply: Air

Gas interface:  Φ8

Power supply:  AC 220V 50Hz

Dimension:  650 mm(L) * 550 mm(W) *475(H)mm

Net weight:  67kg

Standard

ISO 2528, ASTM E96, ASTM D1653, GB 1037, GB/T 16928, TAPPI T464, DIN 53122-1, JIS Z0208, YBB 00092003

Configuration

Standard configuration:  Mainframe, computer, W-CTrans software, test dishes, desiccant tube, pressure regulator, automatic moisture filter, calibration weight, communication cable, sample cutter.

Optional:  Reference film, air compressor and desiccant, sample cutter, DSM system.

Note: Specifications are subject to change without prior notice.