HY4630 Oxygen Index Tester is used to determine the relative flammability of plastics and other materials by measuring the minimum oxygen concentration that will support combustion. The test specimens are burned in a precisely controlled atmosphere of nitrogen and oxygen. Imported sensor to determine the oxygen concentration, digital display. High accuracy of test data, excellent repeatability. Technical Specification Model: HY4630Environmental temperature and humidity RT~40℃ 45%-75% Combustion: cylinder Height: 450mmInner diameter: 100mm Flow: meter range 16L/min N2, 10L/min O2 Accuracy: of flow meter2.5 grade (±5%) Input: pressure 0.2～0.4MpaWorking pressure of N2 and O20.05～0.15Mpa Power supply: AC220V 50Hz Dimensions: 330×255×570mm Weight: 30kg