Hot line/Fax:0086-020-83706905     Tel:18802091429 中文 | English

The causes of haze and the working principle of PM2.5 dust sensor

Update: 2020-08-19 14:53 Source: LUFTMY Reading: ↻ News
 

Haze weather often appears in densely populated cities, with the growth of urban population and industrial development, the increase of vehicles, haze weather also occurs frequently, haze refers to the combination of dust particles and water in the air, floating in the air for a long time to form aerosols.

The causes of haze and the working principle of PM2.5 dust sensor

Haze contains a variety of toxic substances, in addition to natural causes, the current man-made emissions of toxic gases is the main cause of haze hazards, human inhalation of haze will cause respiratory tract related symptoms.

Experts have found that the haze weather caused by fine particulate matter is even more harmful to human health than sandstorms.Particles with a particle size of 10 microns or more will be blocked out of the nose;Particles with particle size between 2.5 microns and 10 microns can enter the upper respiratory tract, but part of them can be discharged from the body through sputum and so on, which is relatively less harmful to human health.

Fine particulate matter smaller than 2.5 micrometers, or PM2.5, a tenth of the size of a human hair, can enter the bronchi when inhaled and interfere with air exchange in the lungs, causing illnesses including asthma, bronchitis and cardiovascular disease.These particles can also enter the blood through the bronchi and alveoli, where harmful gases, heavy metals and other dissolved in the blood, more harm to human health.What is harmful to human body is PM2.5 adsorption. What is more harmful to human body is not the particulate matter itself, but the chemical substances adsorbed on the particulate matter.The effect of PM2.5 on health is essentially the effect of various chemicals adsorbed on the surface of PM2.5. For example, the adsorption of carcinogens has carcinogenic effects, the adsorption of dioxins has reproductive hazards, and the adsorption of heavy metals has heavy metal hazards. The key is to see what PM2.5 adsorbed.

To deal with the priority of smog pollution and improve air quality is to control the PM2.5, and PM2.5 data monitoring PM2.5 dust sensor will need to use, LUFTMY exceed recommended type laser PM2.5 dust sensor module is made of MIE scattering principle of measurement of high precision spherical particle concentration sensor, can continuous acquisition per unit volume and calculate the number of different particle sizes of suspended particles in the air, the particle concentration distribution, and conversion into mass concentration, and the output in the form of general digital interface.The sensor can be embedded into various instruments or environmental improvement equipment related to the concentration of suspended particulate matter in the air to provide timely and accurate concentration data.

LD13 Laser PM2.5 Dust Sensor Model

LD13 Laser PM2.5 Dust Sensor Model

Online application

Product Advantage