Water Vapor Transmission Rate Analyser – Weighting Method

Application 

To test the water vapor transmission rate (WVTR) of packaging materials, such as plastic film, composite film, coextrusion film, aluminum-plated film, aluminum foil, infusion bag, sheets, solar battery panel, cellophane, ceramics and porcelain, and various containers such as bag, pouch, bottle, can, bowl, box, widely used in the industries of food, pharmaceuticals, personal care, household, electronics and so on.

Working Principle

Electrolytic detection sensor method. Fix the test sample in the middle of test chamber to separate the chamber into upper room and lower room. When humid gas flows in upper room and dry gas in lower room, the water molecules in upper room penetrate through the sample into the dry gas, and electrolytic sensor system detect and analyze the water content and calculate the water vapor transmission rate.

Standards

ISO15106-3, DIN 53122-1, GB/T 21529, YBB00092003-2015

Features

• Two chambers can work independently at the same time; support cross-testing.
• Professional software with authority management and data tracking function, ensuring the safety and integrity of test data.
• Fully automatical test; auto judgment and auto stop. 
• With built-in computer, carrying cutting-edge ARM controlling system—can run independently without computer.
• LCD and windows instrument interface show testing data and working status; mouse operation is simple and convenient.
• Temperature control: International advanced electromagnetic technology, program controlled, and no need of external accessories. Precision: 0.1℃.
• Humidity control: Dual gas flow method, with broad range, high precision (1%RH) and stable flow.
• Precise enough to test high barrier materials like aluminum foil.
• By adding package-testing accessories, can test various containers such as bag, pouch, bottle, can and bowl.
• Sensor over-range auto protection.
• Professional software with simple interface, easy to use and convenient to set test process.
• Real time curves display of transmission rate, water vapour concentration, temperature and humidity; curves can be easily zoomed and moved.
• Professional test report; can be exported as Office Word or PDF.