Description
Description
The MQ-8 Hydrogen Gas Sensor Module is a semiconductor gas sensor designed to detect hydrogen concentration in air. It utilizes SnO sensitive material whose conductivity increases proportionally with hydrogen presence. Operating at 5V DC with an integrated heating element, it provides an analog output corresponding to gas concentration. The module offers stable performance with adjustable load resistance for calibration flexibility. Suitable for hydrogen leak detection, safety systems, and embedded gas monitoring applications.
Features
- SnO semiconductor gas sensing element
- Hydrogen detection range 1001000ppm
- High sensitivity to hydrogen gas
- Analog voltage output proportional to concentration
- 5V DC operating voltage
- Integrated heater element for stable sensing
- Adjustable load resistance RL
- Fast response and recovery time
- Compact module design for easy integration
- Suitable for leak detection systems
Specifications
- Operating Voltage: 5V DC
- Heating Voltage VH: 5.0V 0.1V AC or DC
- Heating Resistance RH: 29 3 (Room Temperature)
- Heating Power Consumption: 900mW
- Detection Gas: Hydrogen (H)
- Detection Range: 1001000ppm
- Sensitivity Ratio S: Rs(in air)/Rs(1000ppm H) 5
- Output Voltage (1000ppm H): 2.54.0V
- Concentration Slope : 0.6 (R1000ppm/R400ppm H)
- Load Resistance RL: Adjustable
- Operating Temperature: 20C 2C
- Operating Humidity: 55% 5%RH
Links
- MQ-8 Gas Sensor Datasheet
- MQ-8 Gas Sensor Schematic
- MQ Type Gas Sensor 3D Model
- MQ Gas sensor 3D Case
Tutorials
- How to make hydrogen gas sensor – Arduino and MQ8
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