MEMS H2S sensor module for Hydrogen sulfide
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Note: We offer full PCB design and manufacturing services.Introduction
hydrogen sulfide gas sensor module, using MEMS micro gas Hydrogen sulfide module developed by the body sensor for detecting H2S gas in the air content. This module has extremely high sensitivity to H2S gas. The module is aging, commissioning, calibration and calibration, with good consistency and long-term stability.
Main Feature
High sensitivity, high resolution, low power consumption, long life, multiple output modes such as UART, analog voltage signal, PWM waveform, high stability, excellent linear output.
Main application
Fixed and portable testing instruments, public toilet monitoring, food freshness monitoring, agricultural breeding etc...
Technical Parameter
Sensor Model
M1007
Detected Gas
H2S
Interference Gas
NH3, Ethanol etc.
Detection Range/ppm
0 ~ 10 ppm
Resolution/ppm
30 ppb
Output Data
DAC(0.1 ~ 3V corresponding to 0 ~ full scale
concentration)
UART output (3V level)
Working Voltage
3.3 V (no voltage reverse connection protection)
Working Current
≤ 30 mA
Preheating time
3-5 min
Response Time
<60 s
Recovery Time
<120 s
Operating Temperature
-10-55 ℃
Operating Humidity
15%-90% RH (no condensation)
Storage Temperature
-10-55 ℃
Dimension
20×25×9mm （L×W×H）
Expected Lifetime
≥ 5 Years
Size and Pin definition
Pins
The name of the pin
Notes
1
PWM
I/0
2
UART_RX
UART
3
UART_TX
GND
4
GND
5
LED_R
I/0
6
BEEP_OUT
I/0
7
LED_B
I/0
8
LED_G
I/0
9
GND
GND
10
SWDI0
SWD
11
SWCLK
12
VCC_3.3 V
3.3V Supply
UART communication setting parameters
- General settings: Use UART communication interface, the settings are as follows,
Baud rate
9600
Data bit
8bit
Stop bit
bit
Check bit
None
Flow control
None
Communication is active upload method, the module sends data in every 3 seconds. The data format show as following:
- Communication command: Communication is divided into active upload type, and data is sent once every 3S.The format of data transmission is as follows,
String 1
String 2
String 3
String 4
String 5
String 6
String 7
Temperature
voltage values
(sensor1)
voltage values
(sensor2)
None
(Reserved)
gas class
gas
concentration
None
(Reserved)
Note: Data strings is separated by a space. Gas type in single module is no meaning.
