Laser Particle Sensor-PM2009
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Laser Particle Sensor-PM2009 - 1

Product Name: Laser Particle Sensor Module Item No.: PM2009 Version: V0.2 Date: February 27, 2019

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Laser Particle Sensor-PM2009 - 3

Laser Particle Sensor Module PM2009 Applications ▪ Air purifier ▪ Air quality monitor ▪ Air conditioner ▪ Ventilation system ▪ Consumer electronic products ▪ Environmental monitoring Description PM2009 laser particle sensor module is based on laser scattering technology, designed with all metal shielding, which is used to detect particle concentration size between 0.3μ-10μm exactly in the air and real-time output PM1.0, PM2.5, PM10 in μg/m3 directly via mathematical algorithm and scientific calibration. ▪ The smallest size of available measurement: 0.3μm ▪ Real-time output PM1.0, PM2.5,...

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Laser Particle Sensor-PM2009 - 5

Drive Ctrcui: Dust flow Drive Circuit Amplifier Circuit When the fan works, it will generate airflow. When the particles in the sampled gas pass through the beam of the light source (laser), a light scattering phenomenon occurs, and the scattered light is converted into an electrical signal (ie, a pulse) by the photoelectric converter. The larger the particle size, the larger the amplitude of the pulse signal output. The number of particles of different sizes is calculated by comparing the peak value with the predetermined threshold value, and the mass concentration value is obtained by a...

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Laser Particle Sensor-PM2009 - 7

Typical Application Circuit UART output Circuit connect diagram Note of Circuit Design ▪ I²C communication is 3.3V level. ▪ PIN3, PIN6, PIN7 should be floating ▪ The power supply of sensor should be 5V and low noise, please refer to specification for details.

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Laser Particle Sensor-PM2009 - 8

Product Installation When install PM2009 sensor module in your system or equipment, please make sure that the air inlet and air outlet are unobstructed. And there is no huge airflow face to air inlet and air outlet. In order to avoid dust deposition on th e surface of sensitive component (laser diode and photosensitive diode) which may affect the measurement accuracy, the appropriate installation ways are recommended as below. Recommended installation Cross section Non-Recommended installation Laser Diode Surface User Attention Photosensitive Diode Surface

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Laser Particle Sensor-PM2009 - 9

▪ PM2009 laser particle sensor module is for household electronics products. For application of medical, mining, disaster preparedness, which need high security and high dependence, this sensor is not suitable. ▪ PM2009 should not been used in outdoor with very bad environment where contains large particles. ▪ Avoid using the sensor under situation with strong magnetic, such as situation close to stereo speaker, microwave oven, induction cooking. ▪ When install PM2009 sensor module in your system or equipment, please make sure of unobstructed air-inlet and air-outlet. And there is no huge...

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Laser Particle Sensor-PM2009 - 10

▪ The sensor itself is safe to use, what you should be cautious is the safety of power supply and structure design on the sensor. ▪ According to 《GB7247.1-2012 safety of laser particle product》, this product is defined as 3R level laser product. There is laser radiation inside the sensor. In order to avoid direct exposure to eyes, please refer to following alarming marking:

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Laser Particle Sensor-PM2009 - 11

1) The data in this protocol is all hexadecimal data. For example,“46” for decimal [70]. 2) [xx] is for single-byte data (unsigned, 0-255); for double data, high byte is in front of low byte. 3) Baud rate: 9600; Data Bits: 8; Stop Bits: 1; Parity: No 4) It is default by continuously mode after powering on. Working mode will not be saved after powering off. Sending format of software:

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Laser Particle Sensor-PM2009 - 12

4.1 Read Particle Measurement Result Send: 11 02 0B 07 DB Response: 16 35 0B DF1- DF52 [CS] Function: Read concentration of particle and particles number. Note: Read particle concentration (ug/m3) and particles number (pcs/0.1L) PM1.0 GRIMM mass concentration = DF1*256A3 + DF2*256A2 + DF3*256A1 + DF4 PM2.5 GRIMM mass concentration = DF5*256A3 + DF6*256A2 + DF7*256A1 + DF8 PM10 GRIMM mass concentration = DF9*256A3 + DF10*256A2 + DF11*256A1 + DF12 PM1.0 TSI mass concentration = DF13*256A3 + DF14*256A2 + DF15*256A1 + DF16 PM2.5 TSI mass concentration = DF17*256A3 + DF18*256A2 + DF19*256A1 +...

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Laser Particle Sensor-PM2009 - 13

PM1.0 measuring data within the 4s is less than 5^g/m3, then measuring is close (situation changes to 0x80, only the laser diode turns off for 5 seconds). Otherwise, the sensor will go ahead testing until the PM1.0 measuring data is less than 5 ^g/m3. Example: Send: 11 03 0C 02 1E C0 //open particle measurement Response: 16 02 0C 02 DA//module is under particle measurement open status Send: 11 03 0C 01 1E C1 //close particle measurement Response: 16 02 0C 01 DB// module is under particle measurement closed status 4.3 Set up and Read Particle Measuring Time Send: 11 03 0D DF1 DF2 [CS] // set...

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Laser Particle Sensor-PM2009 - 14

sensor module will start measurement every X seconds. Default measuring time is 36 seconds. 3. Range for X is 180-3600*18, minimum timing period is 3 minutes, maximum timing period is 18 hours. Send: 11 03 05 02 05 E0 // Set up as timing measuring mode, and timing cycle is 517seconds. Response: 16 03 05 02 05 DB // Set up successfully 4.5 Set up Dynamic Measuring Mode Send: 11 02 06 DF1 [CS] // Set up dynamic particle measuring mode Send: 11 01 06 E8 // Read dynamic particle measuring mode Response: 16 02 06 DF1 [CS] Function: Read/set up particle dynamic measuring mode Note: 1. Particle...

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Laser Particle Sensor-PM2009 - 15

3 second measurement. Compare the measured value with the previously stored value for the initial 3 seconds and select Dynamic mode 1 or 2 again. Send: 11 02 06 01 E6 // Set up opening dynamic particle measuring mode Response: 16 02 06 01 E1 // Set up successfully Send: 11 02 06 00 E7 // Set up closing dynamic particle measuring mode Response: 16 02 06 00 E2 // Set up successfully Remark: The module can support 4 kinds of working mode (Single+Continuous+Timing+Dynamic). It can be switched between these 4 kinds of working mode. It is continuous working mode by default after leaving factory....

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Laser Particle Sensor-PM2009 - 17

a. This is an I2C protocol for PM2009. The sensor module is lower computer, which is not able to initiate communication automatically. Communication is initiated via main controlled board, which reads data and sends control commands. b. Communication clock frequency <=100Khz START: start signal, send by main controlled board; STOP: stop signal, send by main controlled board; ACK: acknowledge signal, send by the sensor module if in bold; otherwise, send by main controlled board; NACK: non-acknowledge signal, send by the sensor module if in bold; otherwise, send by main controlled board; Px:...

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