Permeameter WVTR-AE3

Product introduction
The WVTR-AE3 Water Vapor Transmission Rate Tester is built on the electrolytic sensor principle and is intended for quantitative WVTR testing of medium- and high-barrier materials such as plastic films, composite films, sheets and papers. The instrument supports packaged samples and flat specimens, delivering repeatable results for R&D and quality control.

Key features

• High-precision infrared/electrolytic sensing to ensure accurate WVTR measurements
• Automatic temperature and humidity control for a stable test environment
• PC-controlled operation with user-friendly testing software; real-time data and curve display
• Three independent test chambers allowing simultaneous testing of 3 samples
• One-button automatic test sequence for simplified operation
• Patented pipeline flushing design to keep carrier gas lines clean and improve test efficiency
• Advanced leak-proof sample sealing technology to enhance chamber integrity
• Optional USP 1207-compliant data traceability and rights management for pharmaceutical requirements

Testing principle
The sample is mounted in a diffusion cell split into a dry chamber and a controlled-humidity chamber. Dry high-purity nitrogen sweeps the dry side, transporting water vapor permeating through the specimen to an electrolytic sensor. The sensor produces electrical signals proportional to water vapor concentration; WVTR is calculated from these signals. For package samples, dry nitrogen may be circulated inside the package while humidified nitrogen flows outside.

Test standards

• ASTM F1249
• ISO 15106-2
• ISO 15106-3
• TAPPI T557
• JIS K7129

Technical specifications

• Model: WVTR-AE3
• Measuring range (standard): 0.01–40 g/(m2·day); optional: 0.1–1000 g/(m2·day)
• Samples per run: 3 independent chambers
• Resolution: 0.001 g/(m2·day)
• Sample diameter: Φ108 mm
• Measuring area: 50 cm2
• Maximum sample thickness: ≤3 mm
• Testing mode: three independent chambers with separate data
• Temperature control: 15℃–55℃; resolution ±0.01℃; accuracy ±0.1℃
• Humidity control: 0–100% RH; accuracy ±1% RH
• Carrier gas: high-purity nitrogen (99.999%, prepared by user)
• Carrier gas flow rate: 0–200 ml/min (fully automatic control)
• Air source pressure: ≥0.28 MPa (40.6 psi)
• Port size: 1/8"
• Instrument dimensions: 350 × 695 × 410 mm (L × W × H)
• Net weight: 60 kg
• Power supply: AC 220V 50Hz (customization available)

Configuration & options

• Standard: instrument, PC, testing software, communication cable, sample cutter, vacuum seal grease, printer
• Optional: package/container testing accessories, temperature control device
• Note: laboratory air source and distilled water must be provided by the user. Manufacturer reserves the right to modify configuration.

Applications

• Packaging material R&D and QC
• Food and beverage packaging testing
• Pharmaceutical packaging validation (with USP-compliant option)
• Medical device and sterile barrier material testing
• Material suppliers: films, laminates, papers and composites