1. Detection principle

The principle of laser scattering is adopted, that is, the laser irradiates the suspended particles in the air to generate scattering, and at the same time, the scattered light is collected at a certain angle, and the curve of the scattered light intensity with time is obtained, and then the microprocessor uses the algorithm based on the MIE theory to obtain the equivalent particle size of the particles and the number of particles with different particle sizes per unit volume are obtained.

2. Product description

MD202 laser dust sensor is a digital general purpose particle concentration sensor that can be used to obtain the number and mass (μg/m³) of suspended particles in the air per unit volume, i.e. 

PM1.0, PM2.5, PM10, and output it by a digital interface.

The sensor can be embedded in various instruments or environmental improvement equipment related to the concentration of suspended particulates in the air, providing them with timely and accurate concentration data.

3. Feature

The minimum resolution particle size is 0.3 µm

All-round shielding design, anti-static interference

Long service life, accurate and stable data

Ultra-thin 12mm thickness, small size

4. Application

Air quality monitoring equipment, portable meters, air purifiers

Fresh air ventilation systems, air conditioning, smart home equipment

Hospitals, hotels, schools and other public places

5. Specification

Definition