ZE07-CH2O WINSEN | Alldatasheet

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Technical content

Electrochemical CH2O Detection Module （Model：ZE07-CH2O） User’s Manual Version: 1.8 Valid from: 2014-11-10 Zhengzhou Winsen Electronics Technology Co., Ltd

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 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 Fax: 86 -371-60932988 Email: sales@winsensor.com Leading gas sensing solutions supplier in China！ 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 *Temperature compensation *Excellent Linear output Application Portable detector, air-quality monitor device, air fresher, fresh air ventilation system , air-condition, smart home device &etc. Parameters Structural drawing Model No. ZE07-CH2O Target Gas CH2O Interference Gas Alcohol, CO &etc. Output Data DAC(0.4～2V standard voltage output) UART Output(3V Electrical Level) Working Voltage 3.7V～9V (No voltage reverse connect protection) Warm up time ≤3 minutes Response time ≤ 60s Resume time ≤ 60s Detection Range 0～5ppm Resolution 0.01ppm Operating Temp. 0℃～50℃ Operating Hum. 15%RH-90％RH (No condensation) Storage temp. 0℃～50℃ Working life 2 years(in air)

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 China! Pin Description Table 2 PIN15 Vin (Voltage input 3.7V-9V) PIN5、PIN14 GND PIN1 VOUT(Voltage output 3.0V) PIN3 Reserved PIN4 Reserved PIN7 UART (RXD) 0~3.0V D ata input PIN8 UART(TXD) 0~3.0V Data output PIN9 Sensor Analog signal PIN10 DAC 0.4V-2V (0-full measuring range) PIN2 /PIN6 /PIN11 /PIN12 /PIN13 NC Picture 2 ： Pin figure of the Module Communication Protocol

1 General Settings

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 1 2 3 4 5 6 7 8 Start Byte Gas type Unit No decimal byte Concentration (High Byte) Concentration (Low Byte) Full Range (High Byte) Full Range (Low Byte) Checksum 0XFF CH2O =0X17 Ppb=0x04 0x00 0x00 0x25 0x13 0x88 0x25 Gas concentration value= Concentration High Byte *256+ Concentration Low Byte Switch to Q&A type, commends as follow: Table 5 0 1 2 3 4 5 6 7 8 Start Byte reserved Switch command Q&A reserved reserved reserved reserved checksum

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 China! 0xFF 0x01 0x78 0x41 0x00 0x00 0x00 0x00 0x46 Switch to active upload type, commends as follow: Table 6 0 1 2 3 4 5 6 7 8 Start Byte reserved Switch command Active upload reserved reserved reserved reserved checksum 0xFF 0x01 0x78 0x40 0x00 0x00 0x00 0x00 0x47 To read the concentration value, commends as follow: Table 7 0 1 2 3 4 5 6 7 8 Start Byte reserved command reserved reserved reserved reserved reserved checksum 0xFF 0x01 0x86 0x00 0x00 0x00 0x00 0x00 0x79 To return, commends as follow: Table 8 0 1 2 3 4 5 6 7 8 Start Byte command Concentration High byte(ug/m3) Concentration Low byte (ug/m3) reser ved reser ved Concentration High byte (ppb) Concentration High byte (ppb) Check sum 0xFF 0x86 0x00 0x2A 0x00 0x00 0x00 0x20 0x30

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 j,tempq=0; i+=1; for(j=0;j<(ln-2);j++) tempq+=*i; i++; tempq=(~tempq)+1; return(tempq);

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 China! Cross interference gas: Table 5 Gas Concentration Concentration output NH3 50ppm 0ppm C6H6 100ppm 0.1ppm Cl2 10ppm 0.1ppm CH3L 5ppm 0.1ppm C3H6O 100ppm 0.2ppm C2H4O 10ppm 0.5ppm SO2 20ppm 0.8ppm H2S 100ppm 3.7ppm H2 450ppm 5ppm C2H5OH 131ppm 5ppm CH3OH 42ppm 5ppm CH2O 5ppm 5ppm 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 removed or replaced. Note: To keep continual product development, we reserve the right to change design features without prior notice. 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: sales@winsensor.com Website: www.winsen-sensor.com