Application:
OR-J903 is based on the coulometric sensor method and available for the OTR test of flexible films, sheeting and packages. 
Films: 
Plastic films, aluminum foil, aluminized films, plastic composite films, paper-plastic composite films, coextruded films, aluminum foil composite films and many others.
Packages: 
Plastic, rubber, paper, paper-plastic composite, glass and metal packages, e.g. red wine bottles, blister, various plastic bottles, Coke bottles, peanut oil packages, Tetra Pak materials, vacuum bags, metal three-piece cans, plastic packages for cosmetic, soft tubes for toothpaste, jelly and yogurt cups.
 
Feature:
1.Coulometric sensor method
2.Patent technology
3.Film and package test
4.one piece specimen test
5.One-button test, test automatically in whole process
6.Multiple test modes optional
7.Data curves display
8.Computer control
9.Digital flow adjustment 
10.Chamber with temperature sensor embedded in
11.Environment temperature and humidity sensor inside 
12.Chambers with water bath temperature control technology 
13.Unit based on embedded system,24bit Δ-Σ AD 
14.Pressure, oxygen and  temperature overload protection 
15.Traceable reference film calibration
16.Supports DSM system (DSM, lab data management system)
Principles Film:
The specimen is clamped between the upper and lower chamber, the upper chamber is purged by a oxygen stream, and the other side of specimen, lower chamber is purged by a stream of nitrogen, due to the effect of oxygen concentration gradient at two sides of the specimen, oxygen molecules will permeate through the specimen into the nitrogen side,  penetrated oxygen molecules will be carried to the coulometric sensor which generates the proportional signal, so oxygen transmission rate and permeability coefficient will be obtained by calculating the sensor signal.
Package:
The package is mounted on the lower chamber, the outside of the package is air or a pure oxygen stream, the inside of the package is purged by a nitrogen stream, oxygen will permeate through the wall into the inside of the package, penetrated oxygen molecules will be carried to the coulometric sensor which generates the proportional signal, so oxygen transmission rate will be obtained by calculating the sensor signal.
 
Main Parameters:
Test range：
         Film:  0.01-6300 cm3/m2·d (Standard)     
                         0.07-6,3000 cm3/m2·d (Optional)
                         Resolution: 0.001 cm3/m2·d
             Package:
                          0.0001~62 cm3/pkg·d              
                          Resolution: 0.00001 cm3/m2·d
Specimen amount:  one piece
Temperature range: 5C – 95C
Temperature accuracy: ±0.1C
Humidity range: 0%RH,35%RH-90%RH,100%RH
Humidity accuracy: ±1%RH
Test area: 50 cm2
Specimen size:
             Film:  size:>=150mm * 94mm
                      Thickness: less 5mm
             Package:
                       Max size: D120mm * 400mm
Carrier gas: 99.999% Nitrogen
Carrier flow: 0~20 ml/min
Gas interface: 1/8 inch 
Power supply: AC 220V 50Hz 
Dimension: 330mm * 600mm * 330mm
Net weight: 28kg
 
Standards:
ASTM D3985, ASTM F2622, ASTM F1307, ASTM F1927, ISO 15105-2, GB/T 19789, 
JIS K7126-B, YBB 00082003

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