Winsen ZE730-CO Electrochemical Carbon Monoxide Module User Manual

Electrochemical Carbon
Monoxide Module

ZE730-CO Electrochemical Carbon Monoxide Module

(Model No.：ZE730-CO）
Manual
Version：1.0
Date of issue：2023.6.5
Zhengzhou Winsen Electronic Technology Co., Ltd
Statement
This manual’s copyright belongs to Zhengzhou Winsen Electronics Technology Co., LTD. Without the 0written 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.

Product Description

ZE730-CO is a general-purpose, miniaturized gas detection module. The module is equipped with a fuel cell type electrochemical button sensor, which not only has low power consumption, but also can effectively avoid the risk of leakage of traditional electrochemical sensors. In terms of circuit, the instrument amplifier, high-precision AD converter, etc., the detected gas concentration is converted into a digital signal, and the data transmission can be carried out through serial port, PWM and other signals, not only the signal is stable, but also a multiple choice.

Features

High temperature resistance, fast response, low power consumption, high precision, long life.

Application

Vehicle lithium battery failure detection, smart home CO gas detection, portable carbon monoxide detector, etc.

Technical Parameters Stable1.

Definition of pins Stable2.

0-1000PPM)
PIN7| Reserved
PIN8| UART TX pin, 3.3V level
PIN9| UART RX pin, 3.3V level
PIN10| Reserved

Communication Protocol

1. Communication setting Table 3.
   Baud rate| 9600
   ---|---
   Data bits| 8
   Stop bit| 1
   Parity| None

2. Communication description
   The module has two communication modes: question and answer mode & active upload mode. When the module is powered on, it defaults to question and answer mode. After 10 seconds in question and answer mode, if the module does not receive a command frame from the application side, it will switch to active upload mode. In active upload mode, the module will send the current concentration value (in hexadecimal format) to the outside every other second. In active upload mode, if the module receives a downlink data frame from the application, it will immediately switch to question and answer mode.

3. Communication command Active upload modeThe gas name 0x04 represents CO gas. Unit 0x03 represents ppm. The decimal place of 0x00 represents that the uploaded gas concentration value is an integer, with a decimal place of 0.
   Gas concentration value=(gas concentration high level 256+gas concentration low level) resolution.
   Note: The decimal place is 0, and the resolution is 1; 1 decimal place with a resolution of 0.1; The decimal place is 2, and the resolution is 0.01.
   Full scale Decimal is 1000 and hexadecimal is 0x3E8.

4. Fault flag bits are defined as follows：
   D7| D6| D5| D4| D3| D2| D1| D0
   ---|---|---|---|---|---|---|---
   0| 0| Reserved| Reserved| Sensor open circuit fault flag| Sensor short circuit fault flag| Reserved| Reserved

D2 (sensor short circuit fault flag): Set 1 short circuit fault; Set to 0 for normal operation.
D3 (sensor open circuit fault flag): Set 1 to open circuit fault; Set to 0 for normal operation.
Question and Answer mode
0x86 Read Sensor Concentration Command FrameGas concentration value= gas concentration high level* 256+ gas concentration low level.

5. Check Value calculations
   /**
   Function name: ucharFucCheckSum (uchar i, ucharln)
   Function description: Summation verification (taking the sum of 1 2 3 4 5 6 7 of the sending and receiving protocols as negation+1)
   Function description: Add the elements of the array from 1 to the second to last and take the inverse+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);
   }

Installation instructions

This module adopts a Pin2.54mm * 10 single row pin structure and external connection. Simply weld and fix the positioning pins, and manual welding is required for welding.

Cautions

1. Do not plug or touch the sensors on the module with your hands.
2. It is prohibited to modify or shift the installation status of electronic components.
3. The module should avoid contact with organic solvents (including silicone and other adhesives), coatings, chemicals, oils, and high concentration gases.
4. The module cannot withstand excessive impact or vibration.
5. The module needs to be preheated for at least 20 minutes when first powered on.
6. Do not apply this module to systems involving personal safety.
7. Do not install the module in a strong air convection environment for use.
8. Do not place the mold in high concentration organic gas for a long time.

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 https://www.winsen-sensor.com/

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