High-Temperature Digital Display Limiting Oxygen Index Test Apparatus

What is the High-Temperature Digital Display Limiting Oxygen Index Test Apparatus?

The High-Temperature Digital Display Limiting Oxygen Index Test Apparatus is a specialized device used to measure the limiting oxygen index (LOI) of materials at elevated temperatures. The LOI test determines the minimum concentration of oxygen needed to sustain combustion for a specific material. This apparatus allows testing under high-temperature conditions, which simulates more extreme environments, providing a more comprehensive understanding of a material's fire resistance and flammability characteristics. 

Compliance：ISO4589-3:2017 "Plastics - Determination of burning behavior by oxygen index Part 3: Elevated-temperature Test".

Main parameters:

1.Test temperature: continuous setting from room temperature to 150℃;

2.Temperature deviation: ±1%℃;

3.Oxygen concentration (oxygen index): direct reading by digital display. Resolution: 0.1%.

4 .Air supply pipeline: flow meter, pressure gauge and needle valve.

5.Measuring range: 0~100%/O2, resolution: 0.1%L/min

6.Measurement accuracy: class 2.5

7.Combustion cylinder: quartz glass cylinder, inner diameter: 75mm, height: 450mm

8.The gas flow rate at the top of the combustion cylinder: 90mm±10mm/s

9.The gas flow rate in the combustion cylinder: 40mm±2mm/s

10.Input pressure: adjustable from 0.25 to 0.5 Mpa

11.Flow meter: one for oxygen and one for nitrogen, range 1~10L/min, resolution 0.1L/min

12.Oxygen and nitrogen mixed gas inlet: including pressure regulator valve, flow regulating valve and mixing chamber.

13.Ignition: dedicated propane hand-held electronic electric firearms. Using a copper tube with a diameter of 2.0mm, the flame can be adjusted to spray 16mm±4mm vertically downward from the outlet.

14.Specimen clamps: one set of hard self-supporting material and one set of soft material clamp;

15.Heating system: use nickel-chromium alloy rapid heating electric heating wire, which is wound on the glass tube in sections to ensure the uniform temperature in the test tube

16.Temperature measurement system: mineral insulated heater thermocouple ￠1.5mmmm

17.Gas source: oxygen and nitrogen with a purity of more than 98% (provided by the buyer);

18.Power requirements: AC220 (±10%) V/50HZ;

19.Dimensions: L630*W350*H655 (unit: mm)