Permeameter GTR-V3

Introduction
The GTR-V3 Gas Transmission Rate Tester (GTR 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. It is suitable for R&D and QC in packaging, materials and industrial laboratories.

Features

• High-precision infrared sensor for accurate gas detection
• Automatic humidity and temperature control to maintain stable test conditions
• PC-controlled operation with dedicated testing software and user-friendly interface
• Real-time display of test data and permeability curves
• Three independent test chambers for parallel testing of three samples
• One-button automatic test sequence for repeatable workflows
• Patented pipeline purge design for clean carrier gas and high testing efficiency
• Leak-proof sample sealing technology to improve chamber integrity
• Optional computerized data traceability and rights management compliant with USP 1207 (pharmaceutical industry)

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

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

Configuration
Standard configuration: main instrument, constant temperature controller, computer, professional software, special sampler, vacuum grease, fast quantitative filter paper, vacuum pump.
Optional: sampling blade, vacuum pump oil, humidity generator.
Note: The machine air source uses ф 6 mm polyurethane tubing. Gas source and distilled water must be supplied by the user. Device appearance may vary for customized units.

Technical specifications (table)
Item — Parameter
Model — GTR-V3
Measurement range (film) — 0.1～50.000 cc/㎡·24h·0.1MPa
Sample quantity — 3
Main sensor quantity — 3
Test mode — single chamber independent
Vacuum resolution — 0.01Pa
Vacuum degree — <10Pa
Temperature control range — 5℃～95℃
Humidity control range — 0%RH; 2%RH～98.5%RH ±3%RH (note1)
Temperature control precision — ±0.05℃
Temperature resolution — 0.01℃
Test pressure — -0.1 MPa～+0.3MPa (regular)
Air source pressure — 0.4 MPa～0.6 MPa
Test air — O₂, N₂, CO₂ or other gas
Interface of carrier gas — Ф6
Vacuum tube diameter — 1/4"
Calibration mode — calibration of standard film and external calibration of vacuum sensor
Sample thickness — ≤3mm
Sample size — Φ97mm
Permeability area — 38.48 cm2
Size — 760 mm (L) × 575 mm (W) × 450 mm (H)
Weight — 88Kg
Power supply — AC100～240V 50/60Hz

Technical specifications (list)

• Model: GTR-V3
• Measurement range (film): 0.1～50.000 cc/㎡·24h·0.1MPa
• Sample quantity: 3
• Main sensor quantity: 3
• Test mode: single chamber independent
• Vacuum resolution: 0.01Pa
• Vacuum degree: <10Pa
• Temperature control range: 5℃～95℃
• Humidity control range: 0%RH; 2%RH～98.5%RH ±3%RH
• Temperature control precision: ±0.05℃
• Temperature resolution: 0.01℃
• Test pressure: -0.1 MPa～+0.3 MPa
• Air source pressure: 0.4 MPa～0.6 MPa
• Test air: O₂, N₂, CO₂ or other gas
• Interface of carrier gas: Ф6
• Vacuum tube diameter: 1/4"
• Calibration mode: calibration of standard film and external calibration of vacuum sensor
• Sample thickness: ≤3mm
• Sample size: Φ97mm
• Permeability area: 38.48 cm2
• Overall Size: 760 mm (L) × 575 mm (W) × 450 mm (H)
• Weight: 88Kg
• Power supply: AC100～240V 50/60Hz