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PM2.5 sensor product technical principle and selection reference suggestions

Update: 2019-11-16 17:30 Source: LUFTMY

With the rapid development of China's social economy and the aggravation of air pollution with the process of industrialization, haze has already become one of the air quality parameters for national prevention and control. China has successively issued standards for particulate matter monitoring instruments and methods.

haze
haze

I believe you are familiar with the terms PM2.5, PM10 and even PM1.0. PM2.5 is easy to carry a large number of toxic and harmful substances, which can enter into human alveoli and deposit. With the transfer of human circulatory system to other parts of the body, it has an important impact on human health and air quality. Therefore, it will be the focus of future work to strengthen the protection of people and to do a good job of air pollution prediction and monitoring on the basis of reducing air particle pollution, so that individuals can do a good job of protection, so as to reduce the occurrence of systemic diseases.

Ambient air quality monitoring is gradually derived from the trend of city wide monitoring of indoor air quality, and a variety of inhalable particles and gas sensors have become the core of perception technology. The quality of sensor directly affects the final air quality monitoring value, and plays a crucial role in governance and control. In recent years, China's dust PM2.5 particle sensor and dust monitoring technology have also been developed rapidly. PM2.5 sensor supplier luftmy provides hpd05 infrared PM2.5 sensor and other products. Because of its excellent performance, it is widely recognized by customers in the fields of air purifier, fresh air system, portable instrument, air quality monitoring equipment, air conditioning, smart home equipment, etc.

Working principle of haze PM2.5 sensor

Particles and molecules will cause light scattering and absorb part of the energy of the light. So that the light intensity will be attenuated. The concentration of dust in the tested area can be obtained by detecting the degree of attenuation of light passing through the tested area or the amount of light scattering when passing through the tested area.

Working principle of infrared dust PM2.5 sensor
Working principle of infrared dust PM2.5 sensor

It can be seen from the working principle of the dust sensor that the sensor measures the dust in the optical channel. At the same time, in order to obtain the accurate data before and after the light passes through the tested area (to obtain the single value function between the tested and the measured results), the sensor usually makes the tested area into a structure with fixed size and free from environmental interference. During the measurement, the gas containing dust is sent into the sensor Carry out flow measurement. Therefore, the dust on the solid surface cannot be measured directly. However, the dust peeled off from the solid surface can be measured. For example, the dust volume in the air with the dust detector applied by S7 smart dust sensor can be detected after the dust is sucked up by the dust collector.

Working principle of PM2.5 detection module infrared dust PM2.5 sensor
Working principle of PM2.5 detection module infrared dust PM2.5 sensor

The PM2.5 / pm1.0 sensor GPSM series introduced by LUFTMY has strong performance consistency and high precision. It can detect ultra-fine particles with the size of more than 0.3 ㎛ through LUFTMY HPD05, making the PM2.5 / pm1.0 level classification more accurate and can be embedded in various kinds of suspended particles related to the concentration of air, such as smart home, air conditioning, air purifier, fresh air system, air quality detection equipment, PM2.5 detection Provide timely and accurate concentration data for special PM2.5 sensors such as instrument, vehicle air purification, air detector, wearable equipment and other instruments or environmental improvement equipment.

HPD05 Infrared PM2.5 dust sensor
HPD05 Infrared PM2.5 dust sensor

TAGPM2.5 detection module PM2.5 sensor supplier dust fine particle concentration sensor haze PM2.5 sensor