Electrochemical CH2O Detection Module （Model：ZE08K-CH2O） User’s Manual Version: 1.2 Valid from: 2022-08-10 Zhengzhou Winsen Electronics Technology Co.

Statement This manual’s 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 Electrochemical CH2O Detection Module ZE08K-CH2O Profile ZE08K-CH2O is a universal and miniaturization electrochemical formaldehyde detection module. It utilizes electrochemical principle to detect CH2O in air which makes the module with good selectivity and stability. It is built-in temperature sensor to make temperature compensation. It has the digital output and analog voltage output at the same time. It combines mature electrochemical detection technology with a good circuit design. Features *High sensitivity &resolution, Low power consumption,...

Zhengzhou Winsen Electronics Technology Co.,Ltd Pin Description: UART（RXD） 0～3.0V data input UART（TXD） 0～3.0V data output Reserved Fig2. Pin figure of the Module Analog Voltage Output(DAC) (The formaldehyde concentration corresponding to 0.4-2V is 0-5ppm). Compare the output voltage with the reference voltage, and then calculate the gas output concentration according to the corresponding relationship between the voltage and the concentration. UART Output Model Communication Protocol: 1. General Settings Table 3 Baud Rate Data Bits Stop Bits Parity 2 .Commands There are two communication type:...

Zhengzhou Winsen Electronics Technology Co.,Ltd upload and it sends gas concentration every other one second. If the user switched to the question & answer mode, want to re-switch to active upload, please send the following command line format: Table 4 Byte0 Start Byte Active upload data display format is as follows： Table 5 Full Range Full Range (High Byte) (High Byte) Note: Gas concentration value=High byte of concentration *256+ Low byte of concentration. When converted to PPM: PPM = PPB / 1000. When the user needs the question and answer mode, you can send the following command format to...

Zhengzhou Winsen Electronics Technology Co.,Ltd 3 .Checksum and calculation /********************************************************************** * Function Name: unsigned char FucCheckSum(uchar *i,ucharln) * Functional description: Sum check【Take Not(Byte1+Byte2+…Byte7) +1】 * Function declaration: Take Not(Byte1+Byte2+…ByteX (X>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: 1. Place the...

Zhengzhou Winsen Electronics Technology Co.,Ltd Cautions: 1. Sensor shall Avoid organic solvent, coatings, medicine, oil and high concentration gases 2. The module may not be completely encapsulated with resin material, nor may it be immersed in an oxygen-free environment, otherwise the performance of the sensor may be damaged; 3. Modules cannot be used in environments with corrosive gases for long periods of time, and corrosive gases can damage the sensor; 4. Excessive impact or vibration should be avoided； 5. The initial power-up of the module needs to be preheated for 24-48 hours, so that...

Zhengzhou Winsen Electronics Technology Co.,Ltd Zhengzhou Winsen Electronics Technology Co., Ltd Add: No.299, Jinsuo Road, National Hi-Tech Zone, Zhengzhou 450001 China Tel: +86-371-67169097/67169670 Fax: +86-371-60932988 E-mail: [email protected] Website: www.winsen-sensor.com Email: [email protected] Leading gas sensing solutions supplier in China!