Electrochemical CH2O Detection Module （Model：ZE07-CH2O） User’s Manual Version: 1.8 Valid from: 2014-11-10 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 ZE07-CH2O Product Description ZE07-CH2O is a general-purpose and miniaturization electrochemical Formaldehyde detection module. It utilizes electrochemical principle to detect CH2O in air which makes the module with high selectivity and stability. It is a combination of mature electrochemical detection principle and sophisticated circuit design. Features *High sensitivity & resolution& Good stability *Extremely low power consumption *UART/Analog Voltage/PWM wave output * Excellent ability of Anti-interference...

Zhengzhou Winsen Electronics Technology Co., Ltd UART (RXD) 0~3.0V Data input UART(TXD) 0~3.0V Data output Sensor Analog signal NC Picture 2： Pin figure of the Module Communication Protocol 1 General Settings Table 3 Baud Rate Data Bits Stop Bits check bits 9600 8 bytes 1 byte Null 2 Commands There are two communication type: active upload type and Q&A type. The default type for this module is active upload and it sends gas concentration every other one second. Commands as follow: Table 4 0 Start Byte 0XFF Full Range Full Range (High Byte) Gas concentration value= Concentration High Byte *256+...

Zhengzhou Winsen Electronics Technology Co., Ltd 0xFF Switch to active upload type, commends as follow: Table 6 To read the concentration value, commends as follow: Table 7 To return, commends as follow: Table 8 High byte High byte 3 Checksum and calculation ********************************************************************** * Function Name: ucharFucCheckSum(uchar *i,ucharln) * Functional description: Sum check【Take Not(Byte1+Byte2+…Byte7) +1】 **********************************************************************/ unsigned char FucCheckSum(unsigned char *i,unsigned char ln) { unsigned char...

Zhengzhou Winsen Electronics Technology Co., Ltd Concentration output Cautions 1. Sensor shall Avoid organic solvent, coatings, medicine, oil and high concentration gases 2. Excessive impact or vibration should be avoided； 3. Please keep the modules warming up for at least 5 minutes when first using. 4. Please do not use the modules in systems which related to human being’s safety. 5. Please do not use the modules in strong air convection environment. 6. Please do not expose the modules in high concentration organic gas for a long time. 7. Sensor can’t be pulled out. 8. The component can’t be...