GTR-G1H 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.
- Imported high-precision vacuum sensor and pressure sensor are used to effectively ensure the test accuracy of the instrument
- The world's first water bath temperature control system can realize automatic temperature control and a wider temperature control range
- Realize the independent temperature control of the upper and lower chambers and sensors, which effectively guarantees the accuracy of the test results
- Self-developed sealed piping system reduces system errors and makes test results more accurate
- Unique sample anti-leakage structure design, sample sealing is more stable
- 7 inch color touch screen, with professional operating system, the entire experiment process is automatically completed, and the results are automatically displayed
- With high-speed vacuuming capability, more thorough degassing, short test cycle and high efficiency
- 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 user requirements to test the materials with high 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 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.
GB/T 1038, YBB 00082003, ASTM D1434, ISO 2556, ISO 15105-1, JIS K7126-A