ZH03B

ZH03B WINSEN | Alldatasheet

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Technical content

（Model No.: ZH03B） Manual Version: 2.1 Valid from: 2019-04-15 Zhengzhou Winsen Electronics Technology Co., Ltd

This manual copyright belongs to Zhengzhou Winsen Electronics Technology Co., LTD. Without the written permission, any part of this manual shall not be copied, translated, stored in database or retrieval system, also can’t spread through electronic, copying, record ways. Thanks for purchasing our product. In order to let customers using it better and reduce the faults caused by misuse, please read the manual carefully and operate it correctly in accordance with the instructions. If users disobey the terms or remove, disassemble, change the components inside of the sensor, we shall not be responsible for the loss. The specific such as color, appearance, sizes & etc., please in kind prevail. We are devoting ourselves to products development and technical innovation, so we reserve the right to improve the products without notice. Please confirm it is the valid version before using this manual. At the same time, users’ comments on optimized using way are welcome. Please keep the manual properly, in order to get help if you have questions during the usage in the future. Zhengzhou Winsen Electronics Technology CO. , LTD

Zhengzhou Winsen Electronics Technology Co., Ltd www.winsen-sensor.com Tel: 86-371-67169097/67169670 Fax: 86-371-60932988 Email: sales@winsensor.com Leading gas sensing solutions supplier in Chin a! ZH03B Laser Dust Sensor Module Profile Laser Dust sensor module is a common type, small size sensor, using laser scattering principle to detect the dust particles in air, with good selectivity and stability. It is easy to use, with serial port output & PWM output.

Features

Good consistency, Real time response Accurate data, Low power consumption Minus resolution of particle diameter 0.3 µm Main Applications It’s widely used in air purifiers, ventilation systems, portable instrument, air quality monitoring equipment, air conditioner, and smart home equipment. Technical Parameters stable1. Model ZH03B Detection diameter range 0.3~10μm Valid range 0~1000μg/m3 Detection interval 1s PM2.5 detection accuracy 0~100μg/m3 :±15μg/m3 101~1000μg/m3 :±15%reading (test conditions: 25±2℃,50± 10%RH,TSI8530,ciggrates,GBT18801-2015 ) Stabilization time after power on 30s Output UART_TTL OUTPUT(3.3V level, default) PWM output(3.3V level, default) Working Voltage 4.9V~5.5V(DC) Working Current <120mA Dormancy current <20mA Response Time T90＜45s Working Humidity 0~80%RH (no condensation) Working Temperature -10~50℃ Storage Temperature -30~70℃ Dimension 50x32.4x21mm(LxWxH) Weight <38g MTTF Continuous without interruption>10000h

Zhengzhou Winsen Electronics Technology Co., Ltd www.winsen-sensor.com Tel: 86-371-67169097/67169670 Fax: 86-371-60932988 Email: sales@winsensor.com Leading gas sensing solutions supplier in Chin a! Fig1.Pins Fig2.Part no. of Pins(A=8x1.25) Stable2.Pins definition PIN1 VDD DC +5V PIN2 GND GND PIN3 - NC PIN4 RXD Serial port receive TTL@3.3V PIN5 TXD Serial port send TTL@3.3V PIN6 - hang in air for users PIN7 - NC PIN8 PWM output TTL@3.3V Communication Protocol 1. General Settings Baud rate 9600 Date byte 8 bytes Stop byte 1 byte Check byte no Outlet(fan) Inlet

Zhengzhou Winsen Electronics Technology Co., Ltd www.winsen-sensor.com Tel: 86-371-67169097/67169670 Fax: 86-371-60932988 Email: sales@winsensor.com Leading gas sensing solutions supplier in Chin a! 2. Initiative upload No. Instruction Data

0 Byte 1 Start byte 1 0x42

1 Byte 2 Start byte 2 0x4D

2 Byte 3 Frame length high 8 bits 0x00

3 Byte 4 low 8 bits 0x14

4 Byte 5 Data 1 high 8 bits Reserved

5 Byte 6 low 8 bits

6 Byte 7 Data 2 high 8 bits Reserved

7 Byte 8 low 8 bits

8 Byte 9 Data 3 high 8 bits Reserved

9 Byte 10 low 8 bits

10 Byte 11 Data 4 high 8 bits PM1.0 concentration (ug/m3) 11 Byte 12 low 8 bits 12 Byte 13 Data 5 high 8 bits PM2.5 concentration (ug/m3) 13 Byte 14 low 8 bits

14 Byte 15 Data 6 high 8 bits PM10 concentration

(ug/m3) 15 Byte 16 low 8 bits

16 Byte 17 Data 7 high 8 bits reserved

17 Byte 18 low 8 bits

18 Byte 19 Data 8 high 8 bits reserved

19 Byte 20 low 8 bits

20 Byte 21 Data 9 high 8 bits reserved

21 Byte 22 low 8 bits

22 Byte 23 Checksum high 8 bits Initiative upload check

= byte1+……+byte 22 23 Byte 24 low 8 bits NOTE: 1. The default communication mode is initiative uploading mode. 2. Take an example to explain calculate method: Receiving the following data frames: No. 0 1 2 3 4 5 6 7 8 9 10 11 Data 0x42 0x4D 0x00 0x14 0x00 0x54 0x00 0x6E 0x00 0x7C 0x00 0x54 No. 12 13 14 15 16 17 18 19 20 21 22 23 Data 0x00 0x6E 0x00 0x7C 0x00 0x00 0x00 0x00 0x00 0x00 0x03 0x1F Check value= 0x42+0x4D+0x00+0x14+0x00+0x54+0x00+0x6E+0x00+0x7C+0x00+0x54+0x00+0x6E+0x00 +0x7C+0x00+0x00+0x00+0x00+0x00+0x00 = 0x031F High 8 bits 0x03 is in 23th byte of data frame, low 8 bits 0x1F is in 24th byte of data frame. PM1.0 value=0x00*256+0x54=84ug/m3 PM2.5 value=0x00*256+0x6E=110ug/m3 PM10 value=0x00*256+0x7C=124ug/m3 The range for PM1.0, PM2.5 and PM10 are all 0-1000ug/m3.

Zhengzhou Winsen Electronics Technology Co., Ltd www.winsen-sensor.com Tel: 86-371-67169097/67169670 Fax: 86-371-60932988 Email: sales@winsensor.com Leading gas sensing solutions supplier in Chin a! 3. Question & answer mode (Q&A mode) Send the command: 0 1 2 3 4 5 6 7 8 Starting byte Reserve command reserve reserve reserve reserve reserve Check value 0XFF 0x01 0x86 0x00 0x00 0x00 0x00 0x00 0x79 Return value as follow: 0 1 2 3 4 5 6 7 8 Starting byte Command PM2.5 (ug/m3) PM10 (ug/m3) PM1.0 (ug/m3) High 8 bits (ug/m3) Low 8 bits (ug/m3) High 8 bits (ug/m3) Low 8 bits (ug/m3) High 8 bits (ug/m3) Low 8 bits (ug/m3) Check value 0xFF 0x86 0x00 0x85 0x00 0x96 0x00 0x65 0xFA Note: The Q&A data frame check value calculation method is different from the method of initiative uploading the data frame. Please refer to the Q&A chec k value calculation example. 4. Switch between Q&A mode and Initiative uploading mode Send command to set Q&A mode: 0 1 2 3 4 5 6 7 8 Starting byte Reserve command Q&A Reserve Reserve Reserve Reserve Check value 0XFF 0x01 0x78 0x41 0x00 0x00 0x00 0x00 0x46 Send command to set initiative uploading mode: 0 1 2 3 4 5 6 7 8 Starting byte Reserve Command Upload Reserve Reserve Reserve Reserve Check value 0xFF 0x01 0x78 0x40 0x00 0x00 0x00 0x00 0x47 5. Dormant mode. Send command to set dormant mode: 0 1 2 3 4 5 6 7 8 Starting byte Reserve Main command Command to be dormant Reserve Reserve Reserve Reserve Check value 0xFF 0x01 0xA7 Enter:0x01 0x00 0x00 0x00 0x00 0x57 Quit:0x00 0x58 Return value as follow: 0 1 2 3 4 5 6 7 8 Starting byte Main command Return Reserv e Reserve Reserve Reserve Reserve Check value 0xFF 0xA7 Successful：0x01 0x00 0x00 0x00 0x00 0x00 0x58 Failure: 0x00 0x59

Zhengzhou Winsen Electronics Technology Co., Ltd www.winsen-sensor.com Tel: 86-371-67169097/67169670 Fax: 86-371-60932988 Email: sales@winsensor.com Leading gas sensing solutions supplier in Chin a! Calculate method for check value under Q&A mode: How to calculate under Q&A mode: If the returning data as follow: 0 1 2 3 4 5 6 7 8 Starting byte Command PM2.5 (ug/m3) PM10 (ug/m3) PM1.0 (ug/m3) High 8 bits (ug/m3) Low 8 bits (ug/m3) High 8 bits (ug/m3) Low 8 bits (ug/m3) High 8 bits (ug/m3) Low 8 bits (ug/m3) Check value 0xFF 0x86 0x00 0x85 0x00 0x96 0x00 0x65 0xFA Check value = 0x86 + 0x00 + 0x85 + 0x00 + 0x96 + 0x00 + 0x65 = 0x06（keep low 8 bits only） = 0xF9（negation） = 0xFA（plus 1） PM1.0 value=0x00*256+0x65=101ug/m3 PM2.5 value=0x00*256+0x85=133ug/m3 PM10 value=0x00*256+0x96=150ug/m3 The range for PM1.0, PM2.5 and PM10 are all 0-1000ug/m3.

Zhengzhou Winsen Electronics Technology Co., Ltd www.winsen-sensor.com Tel: 86-371-67169097/67169670 Fax: 86-371-60932988 Email: sales@winsensor.com Leading gas sensing solutions supplier in Chin a! PWM output way To calculate PM2.5 concentration through PWM: P (ug/m3)=1000x(TH)/(TH+TL) P (ug/m3) is calculated value of PM2.5 concentration, its unit is ug/m3 TH is the time of high level during one period TL is the time of low level during one period PWM signal instruction Detection Range 0-1000ug/m3 PWM signal voltage 3.3V-TTL default PM2.5 concentration output range 0-1000ug/m3 Period 1000ms±5% High level output at the period start 200us(theoretical value) Middle of the period 1000ms±5% Low level output at the period end 200us (theoretical value) NOTE: PWM signal output has PM2.5 value only.

Zhengzhou Winsen Electronics Technology Co., Ltd www.winsen-sensor.com Tel: 86-371-67169097/67169670 Fax: 86-371-60932988 Email: sales@winsensor.com Leading gas sensing solutions supplier in Chin a! Working Principle: Structure and Sizes: Detection area Circuit Calculation Concentration output

Zhengzhou Winsen Electronics Technology Co., Ltd www.winsen-sensor.com Tel: 86-371-67169097/67169670 Fax: 86-371-60932988 Email: sales@winsensor.com Leading gas sensing solutions supplier in Chin a! Installation way: Air inlet hole requests good ventilation. The fan is at the place of air outlet. When the modu le is installed or used, please avoid strong air flow; if the strong air flow can’t be avoided, please make the outside flow direction is vertical to inside flow direction. Instruction for air flow directions

Zhengzhou Winsen Electronics Technology Co., Ltd www.winsen-sensor.com Tel: 86-371-67169097/67169670 Fax: 86-371-60932988 Email: sales@winsensor.com Leading gas sensing solutions supplier in Chin a! Cautions: 1. It is forbidden to disassemble the shield cover of the sensor and the fixing screw on th e sensor. The sensor shield is connected to the internal power supply through internal spring, if the sensor shield is removed, the anti -interference ability of t he sensor will be deteriorated and sensors’ output value will jump leading that performance is degraded. It is also important to note that the sensor's metal shield should be protected from contacting with other external circuits or conductive components , to reduce the effects of external interference. 2. Excessive impact or vibration will affect the sensors’ accuracy and lifespan, so the sensor should be protected from falling or vibrating during installation and use.¥ 3. The sensor is suitable for the detection of dust particles in ordinary indoor environment. The actual use environment should avoid the soot environment, excessive dust particles, high humidity environment, such as: kitchen, bathroom, smoking room, outdoor environment. If used in such an environment, it should be added appropriate protective procedures to prevent viscous particles or large particles from entering the sensor and forming a reservoir inside the sensor that affects the performance of the sensor. (For example, in the environment where flocs or fibers are used, the corresp onding coarse filter should be added in front of the air inlet of the sensor to avoid flocs or large debris entering the sensor and blocking the light path, thus affecting the sensors’ accuracy. ) 4. The fan is the air outlet, and the dust collecting hole is the air inlet. During the use of the sensor, the sensor should avoid placing directly inside the purifier's own air duct. If it is unavoidable, an independent space structure should be set for the sensor installation position. Referring to figure, the sens or should not be affected by the airflow in the direction of the red arrow. There should be no obstruction within 2cm around the air outlet of the sensor fan. In this independent space, the airflow f rom the sensor outlet should be prevented from flowing directly back to the air inlet, thus affecting the accuracy. 5. Under the normal working condition with normal temperature and normal pressure, the key component laser can work continuously for more than 10,000 hours. It can also increase the service life of the sensor by setting the dormancy mode and working interval. The maximum cumulative working life of the sensor can reach more than 3 years. 6. The sensor data mentioned in this manual is to ensure the co nsistency between the individual manufacturers of the sensor, and does not use third -party testing instruments or da ta as a comparison standard. If users want the final measurement result to be consistent with the third-party detection device, users can perform data fitting correction according to the actual collection result.