Water Vapor Transmission Rate Tester W3/030

Water Transmission Rate Tester W3 / 030  didasarkan pada metode cup, dan secara profesional berlaku untuk tes tingkat transmisi uap air film plastik, film komposit, lembaran dan bahan lainnya yang digunakan dalam industri medis dan konstruksi. Dengan menguji laju transmisi uap air, indeks teknis material dapat dikontrol untuk memenuhi persyaratan produksi.


Product Features

  • Standard periodically weighing method and auto zero before each weighing guarantee the accuracy and uniformity of the testing data
  • Three specimens could be tested simultaneously and the test dishes are lifted and lowered by the gas cylinder which ensures the reliability of the test
  • Standard air velocity to prevent the humidity difference spread which ensures the accuracy of the test
  • Wide range and high-precision of automatic temperature and humidity control to support various combinations of non-standard test conditions
  • Equipped with fast access calibration ports for temperature and humidity which is convenient to the user
  • Wide range power input is available
  • Universal RS232 communication port is convenient to the data export and transmission
  • Reference film or standard weight for fast and accurate calibration
  • Supports LystemTM Lab Data Sharing System for better data management


Under a certain test temperature, 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. By measuring the weight changes of the test dish in different time, water vapor transmission rate and other parameters can be obtained.


This test instrument conforms to the following standards:
ISO 2528, GB 1037, GB/T 16928, ASTM E96, ASTM D1653, TAPPI T464, DIN 53122-1, JIS Z0208, YBB 00092003


This instrument is applicable to the determination of water vapor transmission rate of:

Basic Applications
  • Films
    Including plastic films, plastic composite films, paper-plastic composite films, geomembranes, coextruded films, aluminized films, aluminum foils, aluminum foil composite films and many other film materials
  • Sheeting
    Including engineering plastics, rubber, waterproof building materials and thermal insulation materials, e.g. PP, PVC, PVDC and nylon
  • Paper and Paper Board
    Including paper and paper board
  • Textiles and Nonwovens
    Including textiles and non-woven materials
Extended Applications
  • Inverted Cup Method
    Mount film or sheeting in test dish, cover upper surface of specimen with distilled water, and make the lower side in certain humidity. Generate a constant humidity difference between two sides; water vapor permeates through specimen and measure weight changes in different time to obtain the water vapor transmission rate.
    NOTE: inverted cups are required
  • Solar Back-sheets
    Including solar back-sheets and OLED packaging materials
  • LCD Monitor Films
    Including LCD monitor films
  • Aseptic Wound Protecting Films and Face Masks
    Including aseptic wound protecting films, face masks and protective clothing materials

Technical Specifications

Specifications Film Test
Test Range 0.1~10,000 g/m2·24h (standard)
Number of Specimens 1~3
Accuracy 0.01 g/m2·24h
Resolution 0.001 g
Temperature Range 15°C~55°C (standard)
Temperature Accuracy ±0.1°C(standard)
Humidity Range 10%RH~98%RH
Humidity Accuracy ±1%RH
Air Velocity 0.5~2.5 m/s (customization is available)
Test Area 33 cm2 X 3
Specimen Thickness ≤3 mm (customization is available)
Specimen Size Φ74 mm
Test Chamber Size 15 L
Gas Supply Air
Gas Supply Pressure 0.6 MPa
Port Size Φ4 mm PU tubing
Instrument Dimension 695 mm (L) x 555 mm (W) x 390 mm (H)
Power Supply 220VAC 50Hz / 120VAC 60Hz
Net Weight 76 kg


Standard Configurations
Instrument, Professional Software, Test Dishes, Desiccant Tube, Automatic Moisture Filter, Standard Weight, Round Sample Cutter, Communication Cable and Valve Set
Optional Parts
Reference Film, Air compressor and Desiccant
1. The gas supply port of the instrument is Φ4 mm PU tubing;
2. Customers will need to prepare for gas supply and distilled water.


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