How does the ionic smoke sensor NIS-02C detect smoke turbidity?
As we all know, the production process of iron and steel, non-ferrous metal smelting, thermal power generation, cement and petrochemical enterprises, the exhaust of cars and aircraft, as well as waste incineration, heating boilers and household stoves will emit a lot of smoke. The substances in the soot are very complicated. For example, a large amount of soot will be generated during the combustion process of the boiler, including sulfur dioxide, nitrogen oxides and other atmospheric pollutants. These pollutants are discharged into the atmosphere, forming acid rain, etc., which seriously disrupts the ecological balance and causes great inconvenience to people's lives.
About 100 million tons of smoke and dust are discharged into the air every year in the world, including toxic smoke and dust. If not handled in time, it will not only cause damage to our living environment, but also affect human health and even life.
As various harmful substances adhere to the surface of the dust particles, once entering the human body, it will cause various respiratory diseases.
The solid particles of smoke and dust emitted from coal combustion and industrial production are more harmful to human bodies than other smoke and dust. Its main components are silica, alumina, iron oxide, calcium oxide, and unburned carbon particles. The harm of smoke to human body is related to smoke turbidity and the size of smoke particles:
Soot particles larger than 5 microns will be blocked by nose hair and airway mucus. Particles smaller than 0.5 microns will usually adhere to the surface of the upper airway and be discharged with sputum. The particulate matter with a diameter of 0.5-5 microns is the most harmful to the human body. It not only deposits in the lungs, but also directly enters the blood to reach various parts of the human body.
Therefore, reducing smoke emission and reducing smoke concentration are important components of China's environmental protection. Monitoring soot turbidity is an effective measure to reduce soot emissions. Photoelectric sensors and smoke sensors can be used for smoke and turbidity detection.
The principle of using photoelectric sensors to detect smoke turbidity:
The turbidity of soot in the flue gas is detected by the change of light during the propagation of the flue gas. If the flue gas turbidity increases, the light emitted by the light source is absorbed and refracted by the soot particles, and the light reaching the photoelectric sensor decreases, so the intensity of the output signal of the photodetector can reflect the change in flue gas turbidity.
Japan NEMOTO ionic smoke sensor-NIS-02C to detect smoke turbidity, and other smoke sensors use a very small amount of radioactive material 241Am inside. Within the smoke alarm, there are no regulations for disposal as waste. The size, shape, and smoke sensitivity of this product are exactly the same as those of NIS-09C and can be interchanged at will.
If you want to know more, our website has product specifications for smoke sensor NIS-02C, you can go to ALLICDATA ELECTRONICS LIMITED to get more information