PMS7003 Dust laser Sensor Module

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. Please find the functional diagram of each part of sensor from Figure 1 as follows.

 

• The principle of laser scattering to achieve accurate measurement
• Zero error alarm rate
• Real-time response and support for continuous acquisition
• Minimal resolution particle size 0.3um
• The new patent structure, six full range of shielding, anti-jamming performance stronger
• Inlet direction is optional, the use of a wide range of users without the need for duct design

 Output result

Mainly output as the quality and number of each particles with different size per unit volume, the unit volume of particle number is 0.1L and the unit of mass concentration is μg/m³.
There are two options for digital output: passive and active. Default mode is active after power up. In this mode sensor would send serial data to the host automatically .The active mode is divided into two sub-modes: stable mode and fast mode. If the concentration change is small the sensor would run at stable mode with the real interval of 2.3s.And if the change is big the sensor would be changed to fast mode automatically with the interval of 200~800ms, the higher of the concentration, the shorter of the interval.

Package Included:
1 x Dust sensor module
1 x 10-pin female seat