Detection principle of nitrogen oxide detector
Release time:
2022-05-26
Detection principle of nitrogen oxide detector The key component of the nitrogen oxide detector is the gas sensor. Gas sensors can be divided into three categories in principle: A) Gas sensors using physical and chemical properties: such as semiconductor type (surface control type, volume control type, surface potential type), catalytic combustion type, solid thermal conductivity type, etc. B) Gas sensors using physical properties: such as thermal conduction type, optical interference type, infrared absorption type, etc.
Detection principle of nitrogen oxide detector
The key component of the nitrogen oxide detector is the gas sensor. Gas sensors can be divided into three categories in principle:
A) Gas sensors using physical and chemical properties: such as semiconductor type (surface control type, volume control type, surface potential type), catalytic combustion type, solid thermal conductivity type, etc.
B) Gas sensors using physical properties: such as thermal conduction type, optical interference type, infrared absorption type, etc.
C) Gas sensors using electrochemical properties: such as constant potential electrolysis, Galvanic cell, diaphragm ion electrode, fixed electrolyte, etc.
Nitrogen oxide detectors can effectively monitor nitrogen oxide emissions, thereby reducing accidents. Nitrogen oxides, mainly nitrogen monoxide and nitrogen dioxide, are an important cause of photochemical smog and acid rain. The toxic smog formed by the reaction between nitrogen oxides and nitrogen-hydrogen compounds in automobile exhaust is called photochemical smog. .Photochemical smog has a special odor, irritates the eyes, harms plants, and reduces atmospheric visibility. In addition, nitric acid and nitrous acid generated by the reaction of nitrogen oxides with water in the air are components of acid rain. The main source of nitrogen oxides in the atmosphere It is responsible for the burning of fossil fuels and the burning of plant matter, as well as the transformation of nitrogen compounds in farmland soil and animal waste.
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