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DH-OI-01 Limiting Oxygen Index Test Equipment Limiting Oxygen Index Test Equipment For Lab DH-OI-01 Limiting Oxygen Index Test Equipment Limiting Oxygen Index Test Equipment For Lab


DH-OI-01 Limiting Oxygen Index Test Equipment Limiting Oxygen Index Test Equipment For Lab

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Function:Test material combustion
  • DH-OI-01

  • Dahometer

  • one set

  • 7 days

  • 1 year,Lifelong maintenance

  • T/T, Visa,PayPal,Western Union

  • Negotiable


DH-OI-01 Limiting Oxygen Index Test Equipment Limiting Oxygen Index Test Equipment For Lab


1. Full-color touch screen control, just set the oxygen concentration value on the touch screen, the program will automatically adjust to the oxygen concentration balance and issue the sound of beep, eliminating the trouble of manually adjusting the oxygen concentration;

2. The stepping proportional valve greatly improves the control accuracy of the flow, and the closed-loop control is adopted. During the test, the oxygen concentration drift program automatically adjusts back to the target value, which avoids the disadvantage that the traditional oxygen index tester cannot adjust the oxygen concentration during the test and greatly improves the test accuracy.


It is suitable for the determination of the combustion properties of materials such as plastics,

rubber, fibers, foams, films and textiles, that is, the concentration percentage of the

lowest oxygen in which the polymer just maintains combustion.



◆ The combustion tube is made of high temperature resistant high quality quartz glass tube (inner diameter ¢85mm, length 300mm)

◆ Outlet diameter: φ40mm

◆ The mixer is filled with glass beads to mix oxygen and nitrogen evenly. (Bead φ4.5mm filling height 95mm, label one bag)

◆ Self-supporting sample holder, which can hold the sample vertically; (optional non-self-supporting type frame)

◆ Adopting relay control system, all electronic originals adopt domestic leading brands, which can better guarantee the performance and reliability of the machine.

◆ The equipment has the following safety protection devices: power supply overload, short circuit protection, and control loop overload protection


In line with GB/T 2406.2-2009, GB/T 2406.1-2008 standard

Applicable standards:

ASTM D 2863, ISO 4589-2, NES 714 GB/T 5454 GB/T 10707 GB/T 8924-2005 GB/T 16581-1996

NB/SH/T 0815-2010 TB/T 2919-1998 IEC 61144-1992 ISO 15705-2002 ISO 4589-2-1996


Main Technical Parameter:

1. Adopt imported oxygen sensor, oxygen concentration can be digital displayed without calculation.the accuracy is higher and more accurate, the range is 0-100%

2. Digital resolution: ±0.1%

3. Measurement accuracy: 0.1 level

4. The touch screen setting program automatically adjusts the oxygen concentration

5. One-click calibration accuracy

6. One-click concentration ratio

7. Automatic alarm sound when the oxygen concentration is stable

8. With timing function

9. Can store experimental data

10. Can query historical data

11. Can clear historical data

12. Can choose whether to burn 50mm

13. Air source failure prompt

14. Oxygen sensor fault prompt

15. Prompt for wrong connection of oxygen and nitrogen

16. Oxygen sensor aging tips

17. Standard oxygen concentration input

18. The diameter of the combustion tube can be set (two common specifications are available)

19. Flow adjustment range: 0-20L/min (0-1200L/h)

20. Quartz glass tube: 75cm (can be customized according to user requirements)

21. Gas velocity in the combustion tube: 40mm±2mm/s

22. Overall dimensions: 650mm×400×830mm (can be customized according to user requirements)

23. Pressure gauge accuracy level 2.5, resolution: 0.01MPa

24. Test environment: ambient temperature: room temperature ~ 50 ℃;relative humidity: ≤70%;

25. Input pressure: 0.05-0.3MPa

26. Working pressure: nitrogen 0.15-0.20Mpa oxygen 0.15-0.20Mpa

27. The sample holder can be used for soft and hard plastics, various building materials, textiles, fire doors, etc.

28. Propane (butane) ignition system, the ignition nozzle is made of a metal tube, and the end has a nozzle with an inner diameter of Φ2±1mm, which can be bent freely. Can be inserted into the combustion tube to ignite the sample, flame length: 16±4mm, size 5mm-60mm can be adjusted freely,

29. Gas: Nitrogen and oxygen for industrial use, purity>99%; (user-provided/regular gas station industrial oxygen purity is generally between 99.2%-99.3%).

30. Power requirements: AC220 (+10%) V, 50HZ

31. Maximum power consumption: 150W

32. Self-supporting material sample clamp: can be fixed on the axis of the combustion cylinder and can clamp the sample vertically

33. Non-self-supporting material sample holder: can fix the two vertical sides of the sample to the frame at the same time (optional/applied to soft and non-self-supporting materials such as textiles)

Standard configuration:

1. Main unit (size: length * width * height 360mm * 250mm * 550mm) 1 set

2. Burning tube 1 set

3. Ignition 1 pcs

4. Power cord 1 pcs

5. Spare glass tube 1 pcs

6. Glass beads 1 bag (into the combustion column)

7. Nylon tube Ф 4 1.2 m (connecting the combustion column to the main unit)

8. Sealing ring some

9. Pointed sample holder 1 set

10. Metal mesh (into the combustion column) 1 pcs

11. Plastic air outlet plate 1 pcs

12. Rubber hose 2 pcs

13. M10×1 inner joint screw 1pcs (within the combustion column)

14. M10×1 joint nut 1 piece (connected to the main unit)

15. Instructions 1 copy

16. Non-self-supporting sample holder 1 set (optional)




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Guangdong Hongtuo Instrument Technology Co.,Ltd has been specializing in density testing field on developing, innovating and producing since the year it was establised.

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