MQ9 Carbon Monoxide Gas Sensor

Description :

The MQ-9 is a gas sensor module designed for the detection of multiple gases, including carbon monoxide (CO), methane (CH4), and liquefied petroleum gas (LPG). It is commonly used in gas leakage detection systems, safety alarms, and environmental monitoring projects. Here are some key features and information about the MQ-9 Carbon Monoxide, Methane, and LPG Gas Sensor Module:

Key Features :

 1. Gas Detection :  The MQ-9 sensor is designed to detect the presence of carbon monoxide, methane, and liquefied petroleum gas.

 2. Analog Output : The module typically provides an analog voltage output that varies based on the concentration of the detected gas. The higher the gas concentration, the higher the analog voltage.

 3. Heating Element : Like other MQ series sensors, the MQ-9 sensor contains a heating element that warms up the sensing element for accurate and stable readings.

 4. High Sensitivity : The MQ-9 sensor is known for its high sensitivity to carbon monoxide, methane, and LPG, making it suitable for gas detection applications.

 5. Application Range : Commonly used in gas leak detection systems, safety alarms, and environmental monitoring projects.

 6. Interfacing with Microcontrollers : The MQ-9 sensor can be easily interfaced with microcontrollers like Arduino for integration into electronic projects.

 7. Calibration : Calibration may be required for accurate gas concentration readings. Refer to the sensor's datasheet for specific calibration instructions.

Pin Configuration :

The MQ-9 sensor typically has the following pin configuration:

• VCC: Power supply (5V)
• GND: Ground
• AOUT: Analog output (connects to an analog input pin on a microcontroller)
• DOUT: Digital output (some modules may have a digital output pin)

Wiring :

Here's a basic wiring example for connecting the MQ-9 sensor to an Arduino:

Technical Specification :

Package Include :

• 1 x MQ9 Carbon Monoxide Gas Sensor.