Quality testing machine WVTR-E3

speedelectricautomatic

Product Introduction
WVTR-E3 Water Vapor Transmission Rate Tester is designed and manufactured based on the infrared sensor method and is applicable to testing the water vapor transmission rate of medium and high barrier materials such as plastic films, composite films, sheets and papers. The instrument supports package/container testing and is suitable for quality control in packaging, polymer and pharmaceutical environments.

Features

• High-precision infrared sensor for accurate WVTR measurement
• Automatic humidity and temperature control to maintain stable test conditions
• Computerized operation with user-friendly testing software and real-time display of data and curves
• Three independent test chambers allowing simultaneous measurement of three samples
• One-button automatic test sequence for simplified operation
• Patented pipeline flushing design ensures carrier gas cleanliness and high testing efficiency
• Special leak-proof sample sealing technology enhances chamber sealing performance
• Optional computerized system available to meet USP 1207 requirements for data traceability and rights management (pharmaceutical option)

Technical Specification

• Model: WVTR-E3
• Measuring Range: 0.002–1000 g/(m2·24h) (films and sheets)
• Samples Quantity: 3
• Resolution: 0.001 g/(m2·day)
• Sample Size: Φ30 mm–Φ110 mm
• Measuring Area: 50.24 cm2
• Sample Thickness: ≤3 mm
• Testing Mode: Three independent test chambers
• Temperature Control Range: 5℃–65℃ (Resolution ±0.01℃)
• Temperature Accuracy: ±0.1℃
• Humidity Control Range: 0–100% RH
• Humidity Accuracy: ±1% RH
• Carrier Gas: 99.999% high-purity nitrogen (prepared by user)
• Carrier Gas Flow Rate: 0–100 ml/min (fully automatic control)
• Air Source Pressure: ≥0.28 MPa / 40.6 psi
• Port Size: 1/8"
• Instrument Dimensions: 350 mm (L) × 695 mm (W) × 410 mm (H)
• Net Weight: 60 Kg
• Power Supply: AC 220V 50Hz (customization available)

Testing Principle
The sample is mounted in a diffusion cell divided into a dry chamber and a controlled-humidity chamber. Dry nitrogen sweeps the dry side of the sample and carries permeating water vapor to an infrared sensor, which generates electrical signals proportional to water vapor concentration. WVTR is calculated by analyzing these signals. For package samples, dry nitrogen flows inside the package while humidified nitrogen flows outside.

Test Standard

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

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