Testile Testing Equipment

Textile Combustion Constant Temperature Oxygen Index Tester is used to judge the difficulty of burning of materials when they are in contact with flames in the air. It is suitable for homogeneous solid materials, laminated materials, film and film materials. The main parameters: 3.1 Oxygen concentration (oxygen index): digital display direct reading 3.2 Oxygen concentration (oxygen index) sensor: imported from the United States. 3.3 The two pressure gauges provide oxygen output pressure and nitrogen output pressure respectively, and the air pressure can be adjusted through the regulating valve. 3.4 Measuring range: 0-80%, resolution: 0.1L/min 3.5 Measurement accuracy: 2.5 grade 3.6 Combustion cylinder: quartz glass cylinder, inner diameter: 75mm height: 480mm 3.7 Gas velocity at the top of combustion cylinder: 90mm±10mm/s 3.8 Gas flow rate in the combustion tube: 40mm±2mm/s3.9 Input pressure: adjustable from 0.25 to 0.5 Mpa; 3.10 Constant temperature 23℃±2℃ 3.11 Oxygen and nitrogen mi...

First, the oxygen index and the limit oxygen index , respectively, what is the meaning, what is the point? The limit oxygen index refers to the minimum oxygen concentration, also known as the oxygen limit and the oxygen index, required for the material to maintain the state of combustion in the oxygen-nitrogen mixture under specified test conditions. It is worth noting that the oxygen index does not refer to the oxygen fraction of oxygen gas mixed with the volume fraction of oxygen, this is the oxygen concentration value. Oxygen index is high that the material is not easy to burn, the oxygen index is low that the material is easy to burn, it is generally believed that the oxygen index <22 is a flammable material, oxygen index between 22 --- 27 is a combustible material, oxygen index> 27 is a flame retardant material. Second, how to calculate the limit oxygen index The limiting oxygen index LO I is expressed as a percentage by volume and is calculated as follows: LO...