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ZE12 Datasheet(PDF) 4 Page - Zhengzhou Winsen Electronics Technology Co., Ltd.

Part No. ZE12
Description  Electrochemical Gas Detection Module
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Manufacturer  WINSEN [Zhengzhou Winsen Electronics Technology Co., Ltd.]
Direct Link  https://www.winsen-sensor.com/
Logo WINSEN - Zhengzhou Winsen Electronics Technology Co., Ltd.

ZE12 Datasheet(HTML) 4 Page - Zhengzhou Winsen Electronics Technology Co., Ltd.

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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 definition
Table 2.
Pin1
Vout (0.4~2 V)
Pin2
GND
Pin3
Vin (Vlotage input)
Pin4
UART(TXD) data output
Pin5
UART(TXD) data input
Figure 2: Module bottom view
Detection range and signal output
Detection gas
CO
H2S
SO2
NO2
O3
Detection range
0-12.5ppm
0-2ppm
0-2ppm
0-2ppm
0-2ppm
Gas code
0x04
0x03
0x2B
0x2C
0x2A
Concentration Unit Conversion
In room temperature 25 ℃, under a standard atmospheric pressure, the measured value [ug/m3] = [ppb] *
gas relative molecular mass/air relative molecular mass.
E.g.: relative molecular mass of CO is 28, while for air it is 22.4, thus N = 28/22.4 = 1.25.
Conversion Factor N=
ppb
m
ug
3
/
,
e.g.: If current concentration of CO is 500ppb, its ug/m3 is:
1.25*500=625ug/m3.
Accessories
Fool-proofing socket (it is necessary to connect user’s pcb board and module, and this accessory has pcb
library, see note 7)
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 one second. For
example, if detect CO, the command line format is like below (Table 4).
0
1
2
3
4
5
6
7
8
Start byte
Gas name
Unit
PPB
no decimal
point
gas
concentrati
on(high
gas
concentrati
on(low
Full
measurem
ent
(high
Full
measurem
ent
(low
Check
value
Detection gas
CO
H2S
SO2
NO2
O3
Conversion Factor N
1.25
1.518
2.857
2.054
2.143


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