Air-operated permeameter GTR-V1

Introduction
The GTR-V1 Gas Transmission Rate Tester is designed to measure gas transmission rates (O2, CO2, N2) of plastic films, composite films, high-barrier materials, sheets, metal foils, rubber, tires and permeable membranes using the differential pressure method. The unit is suitable for R&D, quality control and production monitoring.

Features

• High-precision infrared sensor ensures accurate gas measurement
• Automatic humidity and temperature control stabilizes test environment
• Dedicated PC software centralizes test setup, execution and result visualization with real-time curves
• One-button automatic test operation for repeatable procedures
• Patented pipeline flushing design keeps carrier gas clean and improves testing efficiency
• Special sample sealing technology enhances chamber tightness and reduces leaks
• Optional computerized system available to meet USP 1207 requirements for data traceability and user rights management (pharmaceutical option)

Testing Principle
The pre-conditioned specimen is mounted in the diffusion cell to form a sealed barrier between two chambers. The lower-pressure chamber is evacuated, the entire cell is then evacuated, and gas is introduced into the higher-pressure side to create a constant pressure difference. Gas permeates through the specimen from high to low pressure; monitoring pressure changes in the lower chamber yields permeability and barrier properties.

Test standard
ASTM D1434, ISO 2556, ISO 15105-1

Configuration
Standard configuration includes: main instrument, constant temperature controller, built-in computer, special sampler, fast quantitative filter paper, etc. Note: air source interface uses Φ6 mm tubing; gas source and distilled water supplied by user. Appearance shown is standard; customized configurations may vary.

Technical specifications

• Model: GTR-V1
• Measurement range (film): 0.1～50,000 cc/㎡·24h·0.1MPa
• Sample quantity: 1
• Main sensor quantity: 1
• Test mode: single chamber independent
• Vacuum resolution: 0.01 Pa
• Vacuum degree: <10 Pa
• Temperature control range: 15℃～55℃
• Temperature control precision: ±0.05℃
• Temperature resolution: 0.01℃
• Test pressure: 0 MPa～0.2 MPa (regular)
• Air source pressure: 0.1 MPa～0.8 MPa
• Test gases: O2, N2, CO2 or other gas
• Interface of carrier gas: Φ6
• Vacuum tube diameter: 1/4"
• Calibration mode: calibration with standard film and external calibration of vacuum sensor
• Sample thickness: ≤3 mm
• Sample size: Φ97 mm
• Permeability area: 38.48 cm2
• Size (L×W×H): 765 mm × 440 mm × 470 mm
• Weight: 60 Kg
• Power supply: AC100～240V 50/60Hz