Winsen ZE03 User manual

Zhengzhou Winsen Electronics Technology Co.,Ltd www.winsen-sensor.com
Tel: [phone] Fax: [phone] Email: [e-mail]
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Electrochemical Gas
Detection Module
User’s Manual V2.0
（Model：ZE03）
Valid from: 2015-12-16
Zhengzhou Winsen Electronics Technology Co., Ltd

Zhengzhou Winsen Electronics Technology Co.,Ltd www.winsen-sensor.com
Tel: [phone] Fax: [phone] Email: [e-mail]
Leading gas sensing solutions supplier in China!
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 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: [phone] Fax: [phone] Email: [e-mail]
Leading gas sensing solutions supplier in China!
Electrochemical Detection Module ZE03
ZE03 is a general-purpose and high-performance electrochemical module. It uses three electrodes,
electrochemical gas sensor and high-performance micro-processor. By installing different gas sensor,
the module could detect relevant gas. It is with built-in temperature sensor to make temperature
compensation, which makes it could detect the gas concentration accurately. It has the digital
output and analog voltage output at the same time which facilities the usage and calibration and
shorten the development period. It is a combination of mature electrochemical detection principle
and sophisticated circuit design, to meet customers’ different detection needs.
Features
High sensitivity & resolution
Low power consumption
UART and analog voltage output
Good stability and excellent anti-interference ability
Main Application
Portable and fixed gas detector, various gas detection equipment and situation.
Technical Parameters
Model No.
ZE03
Target Gas
CO, O2, NH3, H2S, NO2, O3, SO2, CL2
Measurement Range
Refer stable 2.
Working Voltage
DC 4V～9V
Working Current
＜5 mA
Output Data
UART Output (TTL electrical level,3V)
Analog Voltage(refer stable2. for
sensor original amplifying signal )
Working Life
2 year
Operating Environment
Temp.: -20～50℃
Humidity.: 15%RH-90％RH(no
condensation)
Storage Environment
Temp.: 20～25℃
Hum.: 30%RH-70％RH
Size
ø23.5mm*24.5mm

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Detection range and signal output stable2.
Detection gas
CO
O2
NH3
H2S
NO2
SO2
CL2
O3
Detection
range
0-
1000ppm
0-25%vol
0-100ppm
0-100ppm
0-20ppm
0-20ppm
0-10ppm
0-20ppm
Decimal point
of serial port
null
1 byte
null
null
1 byte
1 byte
1 byte
1 byte
Voltage output
0.6-3V
1.5-0V
0.6-3V
0.6-3V
2-0V
0.6-3V
2-0V
2-0V
Response Time
<20s
≤15s
≤150s
≤30s
≤25s
≤30s
≤60s
≤120s
Pin definition stable3.
GND
Ground
VCC
Power supply
VO
Voltage output
RXD
Series port input
TXD
Series port output
Name rules
Model name: ZE03-X-X-X
“Z”means module, “E ”means electrochemical type sensor, “03”means version, the first X means gas type,
the second X means detection range, the third X means output way.
Eg. “ZE03-CO-(0-1000)ppm-UART/VDC”,”ZE03-O2-(0-25)%VOL-UART/VDC”.
“UART/VDC”means the output way is series port and analog voltage (non standard voltage, refer stable2.)
Communication Protocol
1.General Settings
Baud Rate
9600
Data Bits
8 bytes
Stop Bits
1 byte
check bits
Null
2.Communication Specification
The default communication type is active upload and it sends gas concentration every other one second (the
concentration is 16 hexadecimal). Send 0x78 command to change communication type. After changing the
communication type to 0x04 (Q&A type), only by receiving the 0x86 command (reading concentration value
command), current concentration value can be sent.
Bottom view

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3.Commands
0X78—to change the communicate type (communication type: 0x03 is active upload type, 0x04 is passive
upload type)
1
0x78
Change communication type
Upload
0
1
2
3
4
5
6
7
8
Start Byte
Address
Demand
Communication Type
--
--
--
--
Checksum
0XFF
0X01
0x78
0x03
0
0
0
0
0x84
EXP.
FF 01 78 03 00 00 00 00 84
Receive
0
1
2
3
4
5
6
7
8
Start Byte
Command
Return calibration
--
--
--
--
--
Checksum
0XFF
0X78
Success: 1
Failure: 0
0
0
0
0
0
0x84
EXP
FF 78 01 00 00 00 00 00 87
0x86 —To read the concentration value
Calculate method for gas concentration:
For CO, NH3, H2S, the concentration =(High bytex256+Low byte)ppm
For O2, NO2, SO2, O3, CL2, the concentration=(High bytex256+Low byte)x0.1 ppm
4.Checksum and calculation
/**********************************************************************
* Function Name: ucharFucCheckSum (uchar *i,ucharln)
* Functional description: Sum check【Take Non(Byte1+Byte2+…Byte7) +1】
**********************************************************************/
unsigned char FucCheckSum(unsigned char *i,unsigned char ln)
{
1
0x86
Change communication type
Upload
0
1
2
3
4
5
6
7
8
Start
Byte
Address
Command
--
--
--
--
--
Checksum
0XFF
0X01
0x86
0
0
0
0
0
0x79
EXP.
FF 01 86 00 00 00 00 00 79
Receiv
e
0
1
2
3
4
5
6
7
8
Start
Byte
Command
Concentration value
--
--
--
--
Checksum
0XFF
0X86
High byte
Low byte
0
0
0
0
--
EXP.
FF 86 00 00 00 00 00 00 7A (concentration value is 0)

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unsigned char j,tempq=0;
i+=1;
for(j=0;j<(ln-2);j++)
{
tempq+=*i;
i++;
}
tempq=(~tempq)+1;
return(tempq);
}
Cautions
Please do not take away or plug the sensor in the module
It is prohibited to weld the pins of the module. The socket could be welded.
Sensor shall avoid organic solvent, coatings, medicine, oil and high concentration gases
Excessive impact or vibration should be avoided
Please keep the modules warming up for at least 5 minutes when first using
Please do not use the modules in systems which related to human being’s safety.
Please do not use the modules in strong air convection environment.
Please do not expose the modules 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: [phone]
Fax: [phone]
E-mail: [e-mail]
Website: www.winsen-sensor.com