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MEMS H2S sensor module for Hydrogen sulfide

Model number: M1007
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    For manual, please visit our new website.

    https://www.rainbowsensor.cn/products/mems_gas_sensor/MEMS_H2S_sensor_module_for_hydrogen_sulfide.html

     

    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

     

    1. 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:

     

    1. 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.