Introduction
This a hydrogen and nitrogen oxide gas concentration sensor launched by DFRobot.
The sensor uses MEMS technology to support gas concentration detection of CO, CH4, C2H5OH, C3H8, C4H10, H2, H2S and NH3. The matching sample code integrates the concentration conversion formula of various gas to facilitate the testing and use of sensors.
The product supports 5V power supply, analog voltage output, and has power supply enable/disable pins for low power consumption.
Features
Support a variety of harmful gas detection Integrate the calculation formulas of various gas concentration Low power consumption I2C digital output Compatible with the 3.3~5.5V master controller
Applications
Gas leak detection Gas safety equipment Air environment detection
Specifications
Detection of Physical Quantities: Gas concentration or gas leakage of CO, CH4, 2H5OH, C3H8, C4H10, H2, H2S, NH3
Operating voltage: 4.9～5.1V DC
Power dissipation: 0.45W
Output signal: Analog quantity
Measuring range: 1 – 1000ppm (Carbon monoxide CO) 10 – 500ppm (Ethanol C2H5OH) 1 – 1000ppm (Hydrogen H2) 1 – 500ppm (Ammonia NH3) >1000ppm (Methane CH4)
Working temperature: -30～85℃
Working humidity: 5～95%RH (No condensation)
Storage temperature: -40~85℃
Lifespan: >2 years (in the air)
Circuit board size：12mm x 16mm
Mounting hole size：Inner diameter 2mm/ outer diameter 4mm
Documents
Product wiki (https://wiki.dfrobot.com/Fermion__MEMS_Gas_Sensor___MiCS-5524_SKU_SEN0440)
MiCS-5524 Datasheet (https://img.dfrobot.com.cn/wiki/5b973267c87e6f19943ab3ad/86011e31a53db4f1bb6a3978de97a135.pdf)
Schematics Diagram (https://dfimg.dfrobot.com/nobody/wiki/bc7b994d37fdaffc6e43624bda91cbde.pdf)
Dimension and Component Layout (https://dfimg.dfrobot.com/nobody/wiki/065f0240e12ab11e527c4c6cf91799ba.pdf)
JSON
Publish Topic: device/reading/sensor/ch4
{
value: # float
}
Subscribe Topic: device/config/sensor/ch4
{
state: # binary
}