PMS5003S PM2.5 sensor

PMS5003S is a multifunction sensor that can detect not only the
concentration of particles and formaldehyde but also the value of
temperature and humidity. As the particle concentration sensor it can be
used to obtain the number of suspended particles in the air by laser. It
also integrates in it an electrochemical probe for formaldehyde .The
sensor can be inserted into variable instruments related to the environment
parameters in the air or other environmental improvement equipments to
provide correct 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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