PMS7003 PM2.5 Concentration Laser Detection Air Quality Dust Sensor

Particle measurement range: 0.3~1.0; 1.0~2.5; 2.5~10μm
Particle counting efficiency: 50% at 0.3 micron 98% at >=0.5 micron
Effective amount of particulate matter concentration Range: 0~500 micrograms/cubic meter
Resolution of particle mass concentration: 1 microgram/m3
Consistency of particle mass concentration: ±10% at 100~500 micrograms/cubic meter ±10 micrograms/cubic meter at 0~100 micrograms/cubic meter
Weighing quasi-volume: 0.1L
Single response time: <1>
Comprehensive response time: ≤10 seconds
DC supply voltage: Typ:5.0V Min:4.5V Max: 5.5V
Working current: ≤100mA
Standby current: ≤200μA
Data interface level: L <0>2.7 at 3.3V
Operating temperature range: -10~+60 ℃
Working humidity range: 0~99%
Storage temperature range: -40~+80℃
Mean time between failures: ≥3 years Size: 48×37×12mm

Overview
The PMS7003 is a digital universal particle concentration sensor based on the principle of laser scattering. It can continuously collect and calculate the number of suspended particulates in different air volumes per unit volume, that is, the particle concentration distribution, and then convert it into mass concentration. Interface form output. The sensor can be embedded in a variety of suspended particles in the air associated with the concentration of instrumentation or environmental improvement equipment, to provide timely and accurate concentration data.

Working principle
The sensor uses the principle of laser scattering. It means that the laser light on the particles in the air and making the scattering, while collecting scattered light at a particular angle , resulting in scattered light intensity with time curve. Furthermore, the microprocessor uses the algorithm based on Mie (MIE) to obtain the equivalent particle size of the particles and the number of particles with different particle diameters per unit volume.

Features
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

Ultra-thin design, only 12mm, for portable devices

The main output is the mass per unit volume of particles and the number of particles, of which the number of particles per unit volume of 0.1 liters, the mass concentration in units of micrograms / cubic meter
The output is divided into active output and passive output. After the power is turned on, the default state is active output: the sensor will take the host to send the running data, the time interval is 200 ~ 800ms, the higher the concentration of particles in the air, the shorter the time interval. Active output is divided into two modes: smooth mode and fast mode. When the change in particle concentration in the air is small, the sensor output is a smooth mode: the same set of values is output every three times, and the actual data is about 2s with the new period. When the concentration of particles in the air changes greatly, the sensor output automatically switches to fast mode, each output is a new value, the actual data update cycle of 200 ~ 800ms.