Emission of radiation Flame detector

emission of radiation

a fire emits radiation, human eye experiences visible yellow red flames , heat. in fact, during fire, relatively sparsely uv energy , visible light energy emitted, compared emission of infrared radiation. non-hydrocarbon fire, example, 1 hydrogen, not show co2 peak on 4.3 µm because during burning of hydrogen no co2 released. 4.3 µm co2 peak in picture exaggerated, , in reality less 2% of total energy of fire. multi-frequency-detector sensors uv, visible light, near ir and/or wideband ir have more sensor data calculate , therefore able detect more types of fires , detect these types of fires better: hydrogen, methanol, ether or sulphur. looks static picture, in reality energy fluctuates, or flickers. flickering caused fact aspirated oxygen , present combustible burning , concurrently aspirate new oxygen , new combustible material. these little explosions cause flickering of flame.