Oxygen index tester Oxygen index tester According to national standards New model products developed by the technical requirements specified in GB/T2406. The instrument is used to determine the volume percentage of oxygen required during the combustion of the polymer. The polymer oxygen index value is the oxygen and nitrogen mixed gas stream required to maintain a combustion length of 50 mm or a combustion time of 180 s after ignition of the material. The minimum oxygen concentration (also known as the oxygen index) required to maintain the pattern burning. Oxygen index tester It can be used not only as a means to identify the flame retardancy of polymers, but also as a research tool, providing a powerful test method for laboratory research on flame retardant formulations and development of new flame retardant materials. Suitable for flammability testing of materials such as solid materials, laminates, foams, fabrics, films and films. The structure of the instrument is reasonable in design, easy to operate and maintain. The test system uses an imported oxygen sensor and displays the results numerically. It has the advantages of accurate judgment and good reproducibility. It is an ideal test equipment for scientific research and production quality control. one, Oxygen index tester Main Specifications 1. Using imported oxygen sensor, the digital display shows the oxygen concentration without calculation, the accuracy is higher and more accurate, the range is 0-100% 2. Digital resolution: ±0.1% 3. Measurement accuracy: 0.4 4. Flow adjustment range: 0-10L/min (60-600L/h) 5. Response time: <5S 6. Combustion tube: inner diameter ≥75mm high 400mm 7. Gas flow rate in the combustion cylinder: 40mm ± 10mm / s 8. Pressure gauge accuracy 2.5, resolution: 0.01MPa 9. Flowmeter: 1-15L/min (60-900L/H) adjustable 10. Oxygen/nitrogen mixed gas inlet: including pressure regulator, flow regulator, gas filter and mixing chamber. 11. Sample holders can be used for soft and rigid plastics, textiles, fire doors, etc. 12. Propane (butane) ignition system, flame length 5mm-60mm can be adjusted freely 13. Gas: industrial nitrogen, oxygen, purity >99%; (user-supplied). 14. Igniter: It has a metal tube and a nozzle with an inner diameter of Φ2±1mm at the end. It can be inserted into the combustion tube to ignite the sample. Flame length: 16±4mm, adjustable size 15. Self-supporting material sample holder: can be fixed at the axial position of the combustion tube and can clamp the sample vertically 16. Non-self-supporting material sample holder: can fix two vertical sides of the sample on the frame at the same time two, Oxygen index tester Instrument working conditions 1. Ambient temperature: -10 ° C ~ 45 ° C 2. Relative humidity: <85%; 3. Voltage and power: 220V, 50HZ, 100W 4. Gas used: GB3863 industrial gaseous oxygen; GB3864 industrial gaseous nitrogen; both bottles of gas should be pressure regulating valve; 5. Input pressure: 0.2-0.3MPa 6. Working pressure: nitrogen 0.1-0.15Mpa oxygen 0.1-0.15Mpa Operating procedure
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