PMS3003 PM2.5 sensor

PMS3003 is a kind of digital and universal particle concentration sensor,
which can be used to obtain the number of suspended particles in the air,
i.e. the concentration of particles, and output them in the form of digital
interface. This sensor can be inserted into variable instruments related to
the concentration of suspended particles in the air or other environmental
improvement equipments to provide correct concentration data in time.

Working principle

Laser scattering principle is used for such sensor, i.e. produce scattering by

using laser to radiate suspending particles in the air, then collect scattering

light in a certain degree, and finally obtain the curve of scattering light change

with time. In the end, equivalent particle diameter and the number of particles

with different diameter per unit volume can be calculated by microprocessor

based on MIE theory.

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