GTR-G3 Gas Permeability Tester is based on the differential pressure method, and is professionally applicable to the determination of gas transmission rate (GTR) as well as solubility coefficient, diffusion coefficient and permeability coefficient of plastic films, composite films, high barrier materials, sheeting, aluminum foils, rubber, tire and permeable membrane.
Gas Permeability Tester
Advanced Technology
-The three permeation cells are completely independent, and can test three identical specimens or distinct specimens simultaneously
-Equipped with imported high-precision vacuum sensor and pressure sensor ensure the test accuracy
-World's first advanced water circulated temperature control system, realized temperature auto control and wider temperature range
-Independent temperature control for upper/lower chamber and electrolytic sensor, which ensures the accuracy of the test results
-Self-developed airtight piping system reduces system errors and makes test results more accurate
-Unique sample anti-leakage structure design, ensure the seal stability of samples
-Automatic pressure holding function, which can adjust the pressure of the upper chamber in real time to ensure the constant pressure difference between the upper/lower chambers during the test
-With professional operating system, the test process is completed the results are displayed automatically
-With high-speed vacuuming capability, more thorough degassing, short test cycle and high efficiency
High-end Configuration
-Two test modes: proportional mode and standard mode
-The system has self-checking capability to ensure that the equipment is in normal test state at any time
-Gas transmission rate, solubility coefficient, diffusion coefficient and permeability coefficient of the specimen could be obtained at one operation
-Test range could be extended based on requirements to test the materials with low permeability
-Imported components make the operation of the instrument more stable and reliable
-Reference film for fast calibration to ensure accurate and universal test data
-With automatic save function after power failure
-Standard RS232 port for convenient data transfer
-The whole testing process is monitored, automatically recorded, and can be reproduced in the whole process
-The software is equipped with data traceability, which can realize functions such as multi-level authority management, audit trail, electronic signature, etc., which meets the requirements of GMP (optional)
Test Principle
The pre-conditioned specimen is mounted in the gas diffusion cell as to form a sealed barrier between two chambers. The lower-pressure chamber is firstly evacuated, followed by the evacuation of the entire cell. A flow of gas is thereafter introduced into the evacuated higher-pressure chamber and a constant pressure difference is generated between two chambers. The gas permeates through the specimen from the higher pressure side into the lower side. The gas permeability and other barrier properties of the specimen can be obtained by monitoring the pressure changes in the lower chamber.
Applications
Basic Applications | Films | Including plastic films, plastic composite films, paper-plastic composite films, coextruded films, aluminized films, aluminum foils, aluminum foil composite films and many others |
Sheeting | Including engineering plastics, rubber and building materials, e.g. PP, PVC and PVDC |
Extended Application | Petrochemical | Including transportation pipelines, such as MDPE plastic CO2 testing |
Various Gases | Test the permeability of various types of gases, e.g. O2, CO2, N2, Air and He |
Inflammable, Explosive Gases | Test the permeability of inflammable and explosive gases |
Biodegradable Films | Test gas permeability of various sorts of biodegradable films, e.g. starch-based biodegradable bags |
Materials for Aerospace Usage | Test the Helium permeability of airship gas bags |
Paper and Paper Board | Test gas permeability of paper and paper-plastic composite materials, e.g. aluminized paper for cigarette packages, Tetra Pak sheeting, paper bowls for instant noodles and disposable paper cups |
Paint Films | Test gas permeability of substrates coated paint films |
Glass Fiber Cloth and Paper | Including glass fiber cloth and paper materials, e.g. Teflon paint cloth, Teflon welding cloth and Teflon silicon rubber cloth |
Soft Tube Materials for Cosmetics | Including various types of cosmetic tubes, aluminum-plastic tubes and toothpaste tubes |
Rubber Sheeting | Including various sorts of rubber sheeting, e.g. car tires |
Vacuum Packaging | Including vacuum packaging manufacturing sheets that are easily susceptible to gas oxidation and corrosion, such as electronic products, such as consumable sensors, etc. |
Technical Specifications
Specifications | GTR-G3 |
Test Range | 0.05~ 50,000 cm3/m2·24h·0.1MPa (standard volume) At least 500,000 cm3/m2·24h·0.1MPa (extended volume) |
Number of Specimens | 3 |
Number of Sensors | 3 |
Test Mode | Three chambers independent |
Vacuum Resolution | 0.1 Pa |
Vacuum Degree of Test Chamber | <20 Pa |
Test Temperature | 5°C~ 95°C ±0.1°C (dry gas at standard atmospheric pressure) |
Temperature Accuracy | ±0.1℃ |
Test Pressure | -0.1 MPa ~ +0.1 MPa |
Gas Supply Pressure | 0.1 MPa~ 0.8 MPa |
Test Gas | O2, N2 and CO2 (outside of supply scope) |
Carrier Gas Interface | Ф6 |
Vacuum Pipe Diameter | 1/4" |
Correction Method | Standard film calibration, external calibration of vacuum sensor |
Specimen Thickness | ≤3mm |
Specimen Size | Φ97 mm |
Test Area | 38.48 cm2 |
Instrument Dimension | 740 mm (L) x 415 mm (W) x 430 mm (H) |
Power Supply | AC 220V 50Hz |
Net Weight | 50 kg |
Standards
ASTM D1434, GB/T 1038, YBB 00082003, ISO 2556, ISO 15105-1, JIS K7126-A
Configuration
Standard configuration: Instrument, vacuum pump, vacuum pipe, gas tube, pressure regulator, sampler, vacuum grease, reference film, temperature controlling device.
Optional configuration: Computer, container testing fixture, sampler blades, vacuum grease, filter paper, humidity generator.
Note: Customer need to prepare testing gas.
Feedback
在线咨询
Sales01@pubtestercn.com, Sales02@pubtestercn.com
A3-2, Yinfeng International Biological City, Hi-tech East Zone, Jinan 250104, Shandong, China
