Detection of particulate matter background:
Smog is a weather phenomenon produced by the combination of fog and haze. Smog is very common in cities. In many areas of my country, fog and haze are combined as a severe weather phenomenon for early warning and forecasting, collectively referred to as "smog and haze." In fact, this statement is not appropriate. In meteorology, the criteria for identifying haze are: haze with a relative humidity of less than 80%; fog when the relative humidity is greater than 90%; and a mixture of fog and haze when the relative humidity is between 80% and 90%. The severity of haze is mainly judged by the concentration of atmospheric fine particles PM2.5. So the detection of particulate matter is very important.
Smog is the result of the interaction between specific climatic conditions and human production activities. Social activities with high population density will emit a large amount of fine particulate matter (PM2.5). Once the emission exceeds the atmospheric circulation capacity and carrying capacity, the concentration of fine particles will continue to accumulate and rise. At this time, if it is affected by the static and stable weather, a wide range of smog is extremely easy to appear.
PM2.5 particles have a small particle size, strong activity, and are easily accompanied by toxic and harmful substances. After being inhaled into the human body, it will directly enter the bronchi and interfere with the gas exchange process in the lungs, which may cause asthma, bronchitis and cardiovascular diseases. For PM2.5 particulate matter detection, Jingxunchangtong recommends the use of particulate matter PM2.5/10 sensors.
Introduction to detecting particulate matter:
The PM2.5/10 sensor is a sensor that uses the principle of scattering to detect dust particles in the air. It has small size, high detection accuracy, good repeatability, good consistency, and real-time response. The particle sensor has the advantages of continuous collection, strong anti-interference ability, ultra-quiet fan, and 100% detection and calibration of the sensor when it leaves the factory. The particulate matter sensor supports PM2.5/10, all-in-one detection of temperature and humidity. Particulate matter sensor is a kind of air quality monitoring sensor, which can effectively monitor the concentration of particulate matter such as PM2.5/PM10.
