PM2.5 Laser Particle Sensor

MPM-20A DUST SENSOR, MPM-10B LASER PARTICLE SENSOR

MPM-20A DUST SENSOR MODULE

MPM-20A dust sensor module uses the principle of optical scattering to detect the concentration of dust in the air. The sensor has a built-in infrared light-emitting diode and a highly sensitive photoelectric sensor. The light emitted by the light-emitting diode will produce reflected light when encountering dust. The photoelectric sensor reflects the concentration of dust in the air by detecting the intensity of the reflected light, and the sensor directly outputs the PWM signal; it can also output the dust concentration value through the IIC serial port signal with unit of μg/m3. MPM-20A can be used for air purifiers, air conditioners with purification functions, fresh air systems and air quality testing instruments.

MPM-10B LASER PARTICLE SENSOR

The MPM-10B sensor module uses the principle of optical scattering to detect the concentration of dust in the air. It can collect and calculate the number of suspended particles of different sizes in the air per unit volume, that is, the particle concentration distribution, and then convert it to mass concentration. The particle concentration value is output in the form of a universal UART digital serial port, or it can be output through the IIC serial port and PWM level signal number. The unit of counting data is pcs/0.1L, and the unit of concentration data is ug/m3. The sensor is applied in air purifiers, air conditioners with purification functions, fresh air systems and air quality testing instruments.

MPM-20A DUST SENSOR MODULE

Detection Principle According to the principle of optical dispersion, the infrared light emitting diode emits light and encounters dust to produce reflected light. The highly sensitive photoelectric receiving sensor detects the light intensity of the reflected light, outputs a signal, and judges the dust density according to the intensity and quantity of the output signal. The output current of the detector is proportional to the detected light intensity. After the output current of the sensor is amplified by the amplifier, it is calibrated by the processor and finally outputs the digital PWM signal pulse or the dust concentration value through the UART/IIC data interface.