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...