2. PMSA003 - Digital Laser Dust Sensor

2.1. Description

The PMSA003 is a digital general-purpose particle concentration sensor that can be used to obtain the mass and quantity of suspended particulates in the air per unit volume and output as a digital interface form. The sensors can be embedded in a variety of concentrations of environment-related instruments suspended particulate matter in the air, to provide timely and accurate concentration data.
PMS1003 version has the same technical characteristics, but it has larger dimensions.

Plantower PMSA003 PM2.5 Laser Dust SensorPlantower PMSA003 PM2.5 Laser Dust Sensor

Plantower PMSA003 PM2.5 Laser Dust Sensor

2.2. How it works?

This sensor uses the principle of laser scattering. Namely the scattering of laser irradiation in the air suspended particles, while collecting the scattered light at a specific angle, to obtain the scattering intensity versus with time curve. Microprocessor using based on the MIE theory of the algorithm, get the particle equivalent particle size and unit volume of particles of different particle size.

Sensor Structure DiagramSensor Structure Diagram

Sensor Structure Diagram

2.3. Technical details

Parameter

Indicators

Units

Model

G1

Model number

PMSA003

Data output

Digital sensor (unit quality + number of units)

Type

Biosensor

Size

38 x 35 x 12

Mm (mm)

Measuring range

0.3 to 1.0; 1.0 to 2.5; 2.5 to 10;

Micron (μm)

Counting efficiency

50% @ 0.3 μm 98% @> = 0.5 um

Said quasi-volume

0.1

Liter (L)

Response time

≤10

Seconds (s)

DC supply voltage

5.0

Volt (V)

Maximum operating current

100

Miliamp (mA)

Standby current

≤200

Microamp (μA)

Data interface level

L <0.8 @3.3, H >2.7@3.3

Volt (V)

Operating temperature range

-10 to +60

Celsius (℃)

Operating humidity range

0 to 99%

Mean time between failures

≥3

Year (Y)

2.4. Data interface

2 - pin for serial data communication interface, using universal asynchronous receiver and receiver protocol (UART).
1 - pin for control signal interface, using high and low level control, all levels are 3.3VTTL level.

PIN1

VCC

Power + (5V)

PIN2

GND

Power -

PIN3

SET

Setting pin / TTL level @ 3.3V

PIN4

RXD

Serial receiver pin / TTL level @ 3.3V

PIN5

TXD

Serial transmission pin / TTL level @ 3.3V

PIN6

RESET

Module reset signal / TTL level @ 3.3V

PIN7/8

NC

Empty

📘

Note

SET = 1 working in continuous sampling mode, the module automatically updates sampling data after each sampling, the sampling response time is less than 600 milliseconds, the data update time is less than 2 seconds.

SET = 0 the module enters the low-power standby mode.

2.5. Data sheet

2.6. Where to buy?

eBay

PMS1003: http://ebay.to/2hZsDP1

AliExpress

PMS1003: http://tinyurl.com/zd9rrva

AliExpress

PMSA003: https://goo.gl/w9PNcb

AliExpress

PMSA003: http://bit.ly/2t4gGiu