GTR-G3
O2, N2 and CO2 Gas Transmission Rate Tester
(Differential pressure method)
GTR-G3
O2, N2 and CO2 Gas Transmission Rate 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.
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
7" color touch screen, 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
Technical Specifications
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.

Are you a manufacturer
or trading company?
We are the manufacturer and trading combo, which specialize in material testing instruments such as plastic package, medical device, facial mask, protective clothing and pharmaceutical package, etc. We located in Jinan, Shandong, China.
Do you have any certificate?
We have obtained CE certificate, passed ISO 9001, IPMS management system certificates, and have 18 utility model patents and 4 software copyright certificates.
How about the installation?
The user's manual specifies the installation requirements with details. We will advise the relative information in advance, such as power supply, space, required temperature, humidity, etc.
Do you have after-sales service?
We will carry out the equipment inspection before delivery. If the machine does not work properly, we can make a remote control service to help dealing with the failure. We promise to reply within 24 hours and provide solutions within 2 working days.
How about the warranty?
Our warranty is 12 month, lifelong free of charge! User just bear the materials cost and express charge out-of-warranty period.
How long does the delivery time?
For the regular machine, 3-5 working days. For the customized one, 30 days or so.