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 ZPH04 Particles Sensor Profile This sensor integrates infrared PM2.5 detection technology, using particle counting principle to detect PM2.5 in the environment. It can detect the particles (diameter ≥1μm). Before delivery, the sensor has been aged, debugged, calibrated, and has good consistency and high sensitivity. Features *Good Stability for long time *High Sensitivity *Good Consistency *Easy to install and use *Modular design & Anti-interference *Interface output is multiple Applications *Air Purifier *HVAC System *Civil and Commercial AC *Smoke...

Zhengzhou Winsen Electronics Technology Co., Ltd Fig 1 Detection Principle Light receiving tube. Power resistor Leading gas sensing solutions supplier in China!

Zhengzhou Winsen Electronics Technology Co., Ltd Emission Source Output circuit 1 Signal processing ZPH04 dust sensor uses power resistors to heat the air, the hot air promotes the ambient gas (PM2.5) into the detection of light path, to detect. The optical structure determines the installation of the sensor has certain specification requirements, otherwise it will lead to abnormal detection data. Pins Definition Pins sketch Fig 4. PINS UART mode Fig 4. Pins Remarks The ZPH04's two mode settings can only be performed before the sensor is normally powered on. Please make a hardware connection...

Zhengzhou Winsen Electronics Technology Co., Ltd PM2.5 output wave in PWM mode Low pulse rate=10% (Concentrate is 100ug/m³) Low level time(100ms) Period(1s) Low pulse rate=30% (Concentrate is 300ug/m³) Low level time(300ms) Period(1s) Fig5.PM2.5 output wave Remarks：1.LT is the pulse width of low level in one period (Unit: ms) 2.UT is the pulse width of one period (Unit: ms) 3.Low pulse rate RT: RT=LT/ UT x100% 4. Low pulse rate corresponds to concentration The cross-reference of low pulse rate of output and particle concentration Fig6.The cross-reference of PM2.5 low pulse rate and particle concentration...

Zhengzhou Winsen Electronics Technology Co., Ltd Remark: Usually dust particle concentration (μg/m³) =K*low pulse rate (%), In the field of air quality testing, "excellent, good, medium, and bad" are often used to distinguish the current air quality status. Recommended solution: excellent:0.1%-4.00% Good:4.00%-8.00% Medium: 8.00%-12.00% Bad: ＞12.00% *This suggestion is just a reference, please set according to users’ real demand. Communication protocol 1. General Settings Baud rate Interface level Data byte Stop byte Parity 2.Communication command Module sends the concentration value every one...

Zhengzhou Winsen Electronics Technology Co., Ltd * 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 ) Function description: add the element 1-the penultimate element of the array and then invert +1 (the number of elements must be greater than 2) **********************************************************************/ unsigned char FucCheckSum(unsigned char *i,unsigned char ln) { unsigned char j,tempq=0; i+=1; for(j=0;j<(ln-2);j++) { tempq+=*i; i++; } tempq=(~tempq)+1; return(tempq); } Packing Process...

Zhengzhou Winsen Electronics Technology Co., Ltd Cautions 1.Terms of Use 1. Installation requirements: The sensor must be installed vertically to ensure that the gas path is smooth and avoid contact with organic solvents. 1.1. Installation must be vertically. As shown in Figure 3, the power resistance of the air heating, hot air to promote the external gas into the optical path and promptly removed, the wrong way to install the sensor will read abnormal. 1.2. To ensure smooth detection of gas flow outside the air flow can smoothly into the sensor Tel: 86-371-67169097/67169670 Leading gas sensing...

Zhengzhou Winsen Electronics Technology Co., Ltd optical cavity and timely discharge. When applied to the air refresher, the fan inlet and outlet air flow cannot affect the stability of the sensor detection gas path, can be installed on the side of the body. 1.3. To avoid light. Dust sensor uses a specific wavelength light LED and visible light cut off the photoelectric sensor to detect dust particles, external light radiation will affect the dust sensor optical signal, it is recommended to use the sponge cover dust sensor center triangle hole (shown in Figure 1), do not block Sensor inlet and...