WPT-204 Water Vapor Permeability Tester

WPT-204 is based on the infrared sensor method, and is applicable to the water vapor transmission rate test of high barrier materials.

Product Introduction

WPT-204 Water Vapor Permeability Tester is manufactured based on the infrared sensor method and is applicable to test the water vapor transmission rate of high barrier materials.

Product Features

  • The touch interface is more convenient to operate.
  • High precise infrared moisture sensor.
  • Three kinds of same or different specimens are tested independently in three test chambers at the same time.
  • The stability of the temperature and humidity is to ensure the consistency of test conditions of chambers.
  • High-precise and automatic control system of temperature can be used under different conditions.
  • The data can be stored and outputted in multi-format (including reports in excel and cloud sharing).
  • GMP management of the user's three-level authority complies with international standards.
  • The instrument processes a statistical analysis of single and group data.
  • Equipped with ISP control online and upgrade function.
  • Specialized communicating software can display in real-time, analyze and store data.

Test Principle

The test specimen is mounted in the diffusion cell, which is divided into a dry chamber and a controlled-humidity chamber. The dry side of the specimen is swept by a flow of dry nitrogen, and the water vapor permeating through the specimen from the controlled-humidity chamber is carried by dry nitrogen to the infrared sensor where proportional electrical signals will be generated. The water vapor transmission rate is obtained by analyzing and calculating the electrical signals. For whole package specimens, the dry nitrogen flows inside the specimen while the outside of the specimen is maintained in a high humidity environment.

Test Standards

This test instrument conforms to many national and international standards:

ISO 15106-2, ASTM F1249, TAPPI T557, JIS K7129, GB/T 26253-2010, YBB 00092003-2015


Basic Applications

Including plastic films, plastic composite films, paper-plastic composite films, geomembranes, coextruded films, aluminized films, aluminum foils, aluminum foil composite films, breathable water-proof films and many other film materials

Including engineering plastics, rubber, waterproof building materials and thermal insulation materials, e.g. PP, PVC, PVDC and nylon

Paper, Paperboard
Including paper and paper board

Technical Specifications

Items Specifications
Test Range 0.001 ~ 50 g/m2·24h (Standard)
Number of Specimen 1 ~ 4 PCS with independent test results
Resolution 0.0001 g/m2·24h
Temperature Range 10°C ~ 60°C (Standard)
Temperature Accuracy ±0.5°C
Humidity Range 0%, 35%RH ~ 90%RH
Humidity Accuracy ±1%RH
Test Area 50 cm2
Sample Thickness ≤ 3 mm (Customization is available)
Test Pressure ≥0.20 MPa
Port Size 1/8 inch metal tubing
Instrument Dimension 440 mm (L) × 450 mm (W) × 450 mm (H)
Power Supply 120VAC 60Hz / 220VAC 50Hz
(can be changed to local requirement)


Standard Configurations: Instrument, Professional Software, Sample Cutter, Quantitative Dropper, Gloves.

Optional Parts: Reference Film, Air Compressor.

Note: 1. The gas supply port of the instrument is 1/8 inch metal tubing;
2. Customers will need to prepare for gas supply and distilled water.

Please Note: Jinan Saicheng is always dedicated to the innovation and improvement of product performance and function. Therefore, technical specifications are subject to change without further notice. Jinan Saicheng reserves the rights of final interpretation and revision.
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WPT-204 Water Vapor Permeability Tester
WPT-204 Water Vapor Permeability Tester

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