MQ-9 Carbon Monoxide Methane LPG Gas Sensor Module
QAR 19.00/ unit
Arrives by 17 October · Standard · Delivery from QAR 50
Express: 15 October · Economy: 21 October
Description
The MQ-9 Gas Sensor Module is a semiconductor gas sensor designed to detect Carbon Monoxide (CO), Methane (CH₄), and LPG gases. It uses SnO₂ sensitive material whose conductivity increases as gas concentration rises. The sensor operates using a cyclic heating method, detecting CO at low heater voltage (1.5V) and combustible gases such as Methane and Propane at high heater voltage (5V). This dual-temperature operation improves selectivity and stability. Suitable for gas leak detection systems, safety monitoring, and embedded industrial applications. Features • SnO₂ semiconductor gas sensing element • Detects CO, Methane, and LPG gases • Dual-temperature cyclic heating operation • CO detection at 1.5V heater voltage • Methane and LPG detection at 5V heater voltage • Analog voltage output proportional to concentration • 5V DC module operating voltage • Adjustable load resistance RL • High sensitivity to combustible gases • Suitable for leak detection and safety systems Tutorials • MQ9 Gas Sensor: How To Calibrate & Use Gas Sensors w/ Arduino [w/ Code]
Specifications
| Operating Voltage | 5V DC |
|---|---|
| Heating Voltage (Low) | 1.5V |
| Heating Voltage (High) | 5.0V |
| Heating Resistance RH | 31Ω ±3Ω (Room Temperature) |
| Heating Power Consumption | ≤900mW |
| Detection Gases | CO, CH₄, LPG (Propane) |
| Detection Range (CO) | 10–1000ppm |
| Detection Range (Combustible Gas) | 100–10000ppm |
| Sensitivity Ratio | Rs(in air)/Rs(100ppm CO) ≥5 |
| Output Type | Analog voltage |
| Load Resistance RL | Adjustable |
| Operating Temperature | -10°C to 50°C |
| Operating Humidity | ≤95%RH |
- Category
- Sensors