MQ-9 Carbon Monoxide Gas Sensor Module

The MQ9 Gas Sensor Module is designed to detect carbon monoxide (CO), methane (CH4), and propane (C3H8) gases in the air. It features a semiconductor sensing element that changes resistance based on the concentration of these gases. The module provides an analog output voltage that is proportional to the gas concentration, making it suitable for various applications including gas leak detection, air quality monitoring, and safety systems.

Key Features:

• Detects carbon monoxide (CO), methane (CH4), and propane (C3H8) gases
• Analog output voltage proportional to gas concentration
• High sensitivity to carbon monoxide
• Includes a heating element for accurate gas sensing
• Simple interface with microcontrollers and other electronic systems

Technical Specifications:

• Gas Types Detected: Carbon Monoxide (CO), Methane (CH4), Propane (C3H8)
• Output Type: Analog voltage
• Supply Voltage: 5V DC
• Current Consumption: 150mA (typical)
• Heating Resistance: 2.2kΩ (typical)
• Response Time: 10 seconds to 1 minute (varies by gas concentration)
• Operating Temperature Range: -20°C to +50°C
• Dimensions: 32mm x 20mm x 25mm (approximately)
• Mounting Type: Typically through-hole or with a connector
• Preheat Time: 24 hours for calibration

Applications:

• Gas Leak Detection: Used in safety systems to detect leaks of carbon monoxide, methane, and propane gases.
• Air Quality Monitoring: Monitors the concentration of carbon monoxide and other gases in the environment.
• Safety Systems: Integrated into systems to alert users to the presence of dangerous gases.
• DIY Projects: Suitable for hobbyist projects involving gas detection.
• Industrial Applications: Monitors gas levels in industrial settings for safety and compliance.