Qir-quality and Particles Sensor （Model：ZPH02） Zhengzhou Winsen Electronics Technology C

Statement 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 use 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...

Zhengzhou Winsen Electronics Technology Co., Ltd ZPH02 Air-quality and Particles Sensor Profile This module integrates mature VOC detection technology and advanced PM2.5 detection technology to detect VOC and PM2.5 at the same time. The VOC sensor in this module has high sensitivity to formaldehyde, benzene, carbon monoxide, ammonia, hydrogen, alcohol, cigarette smoke, essence and other organic vapors.PM2.5 detection adopts particle counting principle to detect the particles (diameter ≥1μm). Before delivery, the sensor has been aged, debugged, calibrated and has good consistency and high sensitivity....

Zhengzhou Winsen Electronics Technology Co., Ltd Detection Principle Emission Source Optical receiver Output circuit 2 Heater Pins Definition Control pin(MOD) Fig4：Pins sketch Instructions 1.PIN1: it is control pin. Tel: 86-371-67169097/67169670 Email: [email protected] Leading gas sensing solutions supplier in China!

Zhengzhou Winsen Electronics Technology Co., Ltd www.winsen-sensor.com The sensor is in PWM mode if this pin is hanging in air The sensor is in UART mode if this pin is connecting to GND. 2.PIN2: In UART mode, it is RDX; In PWM mode, it is PWM signal with 1Hz. The output is PM2.5 concentration. 3.PIN4: In UART mode, it is TDX; In PWM mode, it is PWM signal with 1Hz. The output is VOC level. 4.Heater: the heater is built-in and the heating makes air rise, causing the air outside flow into sensor inside. 5.What kind of particles can be detected: diamete ≥1μm, such as smoke, house dust, mold, pollen...

Zhengzhou Winsen Electronics Technology Co., Ltd The relationship between low pulse rate of output and particles concentration Fig7.The relationship of PM2.5 low pulse rate of output and dust particles concentration NOTE：People usually use different grades (best, good, bad, worst) to describe the air quality condition. Recommend the standard as follow: Best：0.00%-4.00% Good：4.00%-8.00% bad：8.00%-12.00% Worst：＞12.00% Email: [email protected] Leading gas sensing solutions supplier

Zhengzhou Winsen Electronics Technology Co., Ltd Sensitivity curve of VOC sensor Air Acetone Methylbenzene Formaldehyde Methane Alcohol Fig8.Sensitivity curve in different gases NOTE: The air quality classified into 4 grades: best, good, bad, worst. The module is calibrated and the output of 0x00-0x03 means from best air-quality level to worst air-quality level. VOC includes a lot of gases and the grades is a reference for customer to judge the air quality. Communication protocol 1.General Settings Table 3. Baud rate Data bits Stop bit Parity Interface level 2.Commnucation command Module sends...

Zhengzhou Winsen Electronics Technology Co., Ltd PM2.5 calculation: Byte3 0x12, byte4 0x13, so RT=18.19% The RT range in UART mode is 0.5%~50%. VOC calculation: Byte7 is VOC output. 0x01: best, …,0x04: worst. 0x00 means no sensor installed or malfunction. 3.Check and calculation /********************************************************************** * Funtion name: ucharFucCheckSum(uchar *i,ucharln) * Funtion description:Sum check(Negate the sum of send and receive protocol 1/2/3/4/5/6/7 and +1 ) **********************************************************************/ unsigned char FucCheckSum(unsigned...

Zhengzhou Winsen Electronics Technology Co., Ltd Email: [email protected] Leading gas sensing solutions supplier in China!