When it comes to PM2.5, we must first explain the concept of PM10. In the environment we live in, a large amount of particulate matter is floating in the air all the time. We call them total suspended particulates (TSP) in the air, and TSP is the main component of air pollutants. In TSP, particles with a diameter of less than 10 microns are usually referred to as PM10, also known as respirable particles or dust. Inhalable particulate matter (PM10) can be inhaled into the respiratory tract and cause harm, which has a great impact on human health and atmospheric visibility. PM10 mainly comes from dust lifted by the wind or pollen emitted by plants. Then, after understanding the concept of PM10, PM2.5 is easy to understand. PM2.5 refers to the particulate matter with a diameter of less than 2.5 microns in the total suspended particulate matter (TSP), also known as lung-enterable particulate matter. It mainly comes from the combustion of fossil fuels, such as motor vehicle exhaust, coal combustion, and volatile organic compounds. It can be monitored with a pm2.5 sensor.
The dangers of PM2.5：
Compared with PM10, PM2.5 is much more harmful. Environmental scientific research has shown that compared with PM10, PM2.5 is richer in a larger amount of toxic and harmful substances, and has a long residence time in the atmosphere and a long transportation distance. Therefore, it has a greater impact on human health and the quality of the atmospheric environment. What's more serious is that particles with a diameter of more than 2.5 microns can be blocked by tissues and organs such as the nose and respiratory tract mucosa during the human body's breathing process, thereby being excreted from the body. But PM2.5 is only equivalent to 1/20 of human hair due to the extremely small diameter of particles. It can directly penetrate human organs and directly enter the lungs. Causes diseases including asthma, bronchitis and cardiovascular disease.
Protective measures that individuals can take themselves:
(1) Wear a pm2.5 mask. In addition to being dust-proof, pm2.5 masks are pm2.5-proof. The mask fabric uses Kanglon fiber that can kill "super bacteria" that even antibiotics can't kill. In the continuous breathing of people, pm2.5 particles mixed with a large number of pathogenic bacteria are directly harmful to human health after being inhaled. The use of masks is undoubtedly an effective solution to the problems of dust prevention and disease prevention. Especially on the way to and from get off work, in subway stations and places with high crowds.
(2) Minimize smoking or even no smoking. There is a large amount of PM2.5 in the smoke, which will directly and indirectly harm the human body. If you can't stop people around you from smoking, you should try to stay away from the smoke.
(3) Morning exercise is not allowed on foggy days. PM2.5 is one of the important culprits of foggy weather. Therefore, it is not advisable to go out for morning exercises when you find that the fog is relatively heavy in the morning. If you must exercise in the morning, it is recommended to wear a mask that can prevent pm2.5 for morning exercises with little exercise such as jogging and trotting.
Particulate Sensor - Dust Sensor - pm2.5/10：
The laser particle (dust) sensor module adopts the principle of laser scattering and can monitor the concentration of PM1.0/2.5/10. The particle sensor module adopts a built-in shielding cover, and the internal anti-interference is more accurate and the measurement is accurate. The whole machine is small in size, light in weight and easy to install. It can be used with appearance sensors such as wall-mounted and louver boxes. It can output PM2.5, PM10, temperature and humidity, TOC and other data at the same time, with high sensitivity and stable data. The product has good consistency, stability, reliability, versatility and moderate price. Support secondary development, flexible management and control, and diversified development. The application is simple and easy to use.
PM2.5/10 monitoring sensor
The laser particle sensor is a sensor that uses the scattering principle to detect dust particles in the air. Small size, high detection accuracy, good repeatability, good consistency, real-time response and continuous acquisition, strong anti-interference ability, must be tested and calibrated at the factory. Support various output signals, support RS485/4-20mA/0-5V/0-10V/NB-loT/Lora/4G and other signal outputs to meet environmental requirements. Adopt IP65 high-density material shell, built-in waterproof strip, moisture-proof and dust-proof. High temperature and high humidity environment, dust, rain and snow and other harsh environments can be used.