1. Adopting imported oxygen sensor, digital display oxygen concentration without calculation, higher precision and more accurate, range 0-100% Digital resolution: ± 0.1% 

2. Measurement accuracy: 0.4 level 

3. Flow rate adjustment range: 0-10L/min (60- 600L/h) Response time: <5S 

4. Combustion cylinder: inner diameter ≥ 75 ㎜ height 400mm gas flow rate in the combustion cylinder: 40mm ± 10mm / s 

5. Pressure gauge precision 2.5 level, resolution: 0.01MPa Flow meter: 1-15L/min (60- 900L/H) adjustable 

6. Oxygen/nitrogen gas mixture inlet: including pressure regulator valve, flow regulator valve, gas filter and mixing chamber. 

7. Specimen clamps can be used for soft and hard plastics, textiles, fire doors, etc. 

8. Propane (butane) ignition system, flame length 5mm-60mm can be freely adjusted 

9. Gas: industrial nitrogen, oxygen, purity > 99%; (user supplied) 

10. Igniter: made of a metal tube, the end of the nozzle with an inner diameter of Φ2 ± 1mm, can be inserted into the combustion cylinder to ignite the specimen, flame length: 16 ± 4mm, adjustable in size Self-supporting material specimen clamp: can be fixed in the combustion cylinder axis position, and can be vertically clamped to the specimen. 

11. non-self-supporting material specimen clamp: can be fixed on the two vertical sides of the specimen at the same time fixed on the frame.