Machine Model: JF-5 Intelligent Touch Screen Automatic Oxygen Index Tester  

I. Advantages of Automatic Oxygen Index Tester
Full-color touch screen control, simply set the oxygen concentration value on the touch screen, and the program will automatically adjust to the balanced oxygen concentration and emit a beep to prompt, eliminating the hassle of manually adjusting the oxygen concentration.
2. Utilizing a stepper motor valve significantly enhances flow control accuracy, with a closed-loop control system. During testing, the program automatically adjusts the oxygen concentration drift back to the target value, eliminating the drawback of traditional oxygen index meters that cannot adjust oxygen concentration during testing, thus greatly improving testing accuracy.

II. Main Technical Parameters of Automatic Oxygen Index Tester
1. Utilizing imported oxygen sensors, digital display of oxygen concentration eliminates the need for calculation, offering higher accuracy and precision, with a range of 0—99%.
2. Digital Resolution: ±0.1%
3. Measurement Accuracy: 0.1 Grade
4. Touchscreen program for automatic adjustment of oxygen concentration
5. One-Touch Calibration Accuracy
6. One-click Concentration Matching
7. Stable oxygen concentration with automatic prompt and alarm sound
8. Timer Function
9. Store experimental data
10. Historical data is searchable.
11. Erase historical data
12. Optional: Burnable 50mm
13. Gas Source Fault Alert
14. Oxygen Sensor Fault Indicator
15. Oxygen/Nitrogen Misconnection Alert
16. Oxygen Sensor Aging Alert
17. Standard Oxygen Concentration Input
18. Settable combustion tube diameter (two common sizes available)
Flow Adjustment Range: 0-20 L/min (0-1200 L/h)
20. Quartz glass tube: Choose one of the two sizes available (internal diameter ≥ 75mm or internal diameter ≥ 85mm)
21. Gas Flow Rate Inside Combustion Tube: 40mm ± 2mm/s
22. Overall dimensions of the complete machine: 650mm x 400 x 830mm
23. Pressure gauge accuracy: 2.5 class, resolution: 0.01 MPa
24. Test Environment: Ambient Temperature: Room temperature to 40℃; Relative Humidity: ≤70%
25. Input Pressure: 0.25-0.3 MPa
26. Work Pressure: Nitrogen 0.15-0.20 Mpa; Oxygen 0.15-0.20 Mpa
27. Sample holders are suitable for soft and hard plastics, various building materials, textiles, fire doors, etc.
28. Ignition System, the ignition nozzle is made of a metal tube with an inner diameter of Φ2±1mm at the end, which is freely bendable. It can be inserted into the combustion tube to ignite the sample, with flame length of 16±4mm, and size adjustable from 5mm to 60mm.
29. Gases: Industrial nitrogen and oxygen, purity > 99% (User-provided or regular gas station industrial oxygen purity is generally between 99.2%-99.3%).
Power Requirements: AC 220 (+10%) V, 50 Hz
31. Maximum Power Consumption: 150W
32. Self-supporting Material Sample Clamp: Capable of being fixed at the center of the combustion tube and vertically holding the sample
33. Non-self-supporting Material Specimen Clamp: Allows both vertical edges of the specimen to be simultaneously fixed on the frame (optional/applicable to textiles and other soft, non-self-supporting materials)   Section 3: Design Standards for Fully Automatic Oxygen Index Instruments: GB/T 2406.2-2009
Tips: During the oxygen index tester test, a bottle of industrial-grade oxygen/nitrogen with a purity of not less than 98% is required for each gas source. As these gases are hazardous for transportation, they cannot be provided as accessories for the oxygen index tester and must be purchased locally at a gas station. (To ensure the purity of the gas, please purchase from a local authorized gas station.)