1. Product functional characteristics
1. Full color touch screen control, simply set the oxygen concentration value on the touch screen, and the program will automatically adjust to the oxygen concentration balance and emit a beep sound prompt, eliminating the trouble of manually adjusting the oxygen concentration;
2. The step proportional valve is used to greatly improve the flow control accuracy. The closed-loop control is used to automatically adjust the oxygen concentration drift program to the target value during the test, which avoids the disadvantage that the traditional oxygen index tester cannot adjust the oxygen concentration during the test, and greatly improves the test accuracy.
II. Related technical parameters
1. Adopting imported oxygen sensors, the digital display of oxygen concentration does not require calculation, resulting in higher and more accurate accuracy, with a range of 0-100%?
2. Digital resolution: ± 0.1%
3. Measurement accuracy: 0.1 level?
4. The touch screen settings program automatically adjusts the oxygen concentration
5. One click calibration accuracy
6. One click ratio concentration
7. Stable oxygen concentration automatic warning sound
8. With timing function
9. Can store experimental data
10. Historical data can be queried
11. Can clear historical data
12. Can choose whether to burn 50mm or not
13. Gas source fault prompt
14. Oxygen sensor fault prompt
15. Misconnection prompt for oxygen and nitrogen
16. Oxygen sensor aging prompt
17. Input of standard oxygen concentration
18. The diameter of the combustion cylinder can be set (two common specifications are optional)
19. Flow regulation range: 0-20L/min (0-1200L/h)
20. Quartz glass cylinder: Choose one of two specifications (inner diameter ≥ 75mm or inner diameter ≥ 85mm)
21. Gas flow rate inside the combustion cylinder: 40mm ± 2mm/s?
22. Overall dimensions of the machine: 650mm x 400 x 830mm
23. Test environment: ambient temperature: room temperature~40 ℃;, Relative humidity: ≤ 70%;
24. Input pressure: 0.25-0.3MPa
25. Working pressure: Nitrogen 0.15-0.20Mpa? Oxygen 0.15-0.20Mpa
26. Can the sample holder be used for soft and hard plastics, various building materials, textiles, fire doors, etc?
27. Propane (butane) ignition system, the ignition nozzle is made of a metal tube, and the tail end has a nozzle with an inner diameter of ± 1mm, which can be freely bent. Can be inserted into the combustion cylinder to ignite the sample, flame length: 16 ± 4mm, size: 5mm-60mm, and can be freely adjusted,
28. Gas: Industrial nitrogen and oxygen, with a purity greater than 99%; (Note: Gas source and connecting head to be provided by the user)
Tips: When testing the oxygen index tester, it is necessary to use one cylinder of industrial grade oxygen/nitrogen at least 98% as the gas source. As the above gases are high-risk transportation materials, they cannot be provided as accessories for the oxygen index tester and can only be purchased from the user's local gas station. (To ensure the purity of the gas, please purchase it from a reputable local gas station)
29. Power requirements: AC220 (+10%) V, 50HZ
30. Operating power: 150W
31. Self supporting material specimen clamp: able to be fixed on the axial position of the combustion cylinder and vertically clamp the specimen
32. Non self-supporting material sample holder: capable of simultaneously fixing two vertical edges of the sample to the frame (optional/applied to soft, non self-supporting materials such as textiles)
Design standard: GB/T 2406.2-2009