MQ-9 Carbon Monoxide, Methane and LPG Gas Sensor Module
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![TECHNICAL DATA MQ-9 GAS SENSOR]()
![MQ-9 Sensor Module]()
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Sensitivity: It exhibits high sensitivity to carbon monoxide, methane, and LPG gases.
Principle: The sensor employs a semiconductor gas sensor, wherein the resistance of the sensing material alters based on the concentration of the target gases.
Analog and Digital Output: Like other MQ series sensors, the MQ-9 module offers both analog and digital outputs. The analog output can provide an estimate of the gas concentration, while the digital output can be set to trigger alerts when gas concentration surpasses a predetermined threshold.
Adjustable Sensitivity: Many modules feature a potentiometer that permits users to adjust the sensor's sensitivity.
Affordability: The MQ-9 sensor module is cost-effective, making it a popular choice for various gas detection projects.
Industrial Safety: It can be utilized in industrial environments to ensure worker safety by detecting harmful gases. Gas Leak Detection: The module is valuable for monitoring gas leaks from stoves, heaters, and other appliances that use methane or LPG.
Air Quality Monitoring: Used in indoor air quality monitoring systems to detect carbon monoxide emissions.
Calibration: To obtain precise readings, calibration may be necessary. This involves exposing the sensor to clean air to establish a baseline resistance value.
Reading Values: Similar to previous MQ series sensors, you can use a microcontroller (e.g., Arduino) to read values from the MQ-9 sensor. Connect the analog output to an analog pin and the digital output to a digital input pin on the microcontroller.
Cross-Sensitivity: The MQ-9 sensor could exhibit cross-sensitivity to gases other than its primary targets. This cross-sensitivity can impact accuracy if other gases are present in the environment.
Environmental Factors: As with all gas sensors, environmental conditions like temperature and humidity can influence their performance.
When integrating the MQ-9 Carbon Monoxide, Methane, and LPG Gas Sensor Module into a project, proper calibration and consideration of potential cross-sensitivity are vital for obtaining accurate and reliable gas concentration readings, especially given the significance of detecting carbon monoxide and flammable gases.
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MQ-9 Carbon Monoxide, Methane and LPG Gas Sensor Module
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- Product SKU: KG057
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Specification
Description
The MQ-9 Carbon Monoxide, Methane, and LPG Gas Sensor Module is a versatile sensor designed to detect the presence of carbon monoxide (CO), methane (CH4), and liquefied petroleum gas (LPG).Here's an in-depth overview of the MQ-9 sensor module:
Purpose: The MQ-9 sensor module is engineered to identify carbon monoxide, methane, and LPG gases, making it a valuable component for safety applications and gas detection systems.Sensitivity: It exhibits high sensitivity to carbon monoxide, methane, and LPG gases.
Principle: The sensor employs a semiconductor gas sensor, wherein the resistance of the sensing material alters based on the concentration of the target gases.
Features:
Multi-Gas Detection: The MQ-9 module is specifically designed to detect multiple gases— carbon monoxide, methane, and LPG— in a single package.Analog and Digital Output: Like other MQ series sensors, the MQ-9 module offers both analog and digital outputs. The analog output can provide an estimate of the gas concentration, while the digital output can be set to trigger alerts when gas concentration surpasses a predetermined threshold.
Adjustable Sensitivity: Many modules feature a potentiometer that permits users to adjust the sensor's sensitivity.
Affordability: The MQ-9 sensor module is cost-effective, making it a popular choice for various gas detection projects.
Applications:
Home Safety: The MQ-9 sensor is frequently employed in homes to detect carbon monoxide and flammable gases like methane and LPG, preventing potential hazards.Industrial Safety: It can be utilized in industrial environments to ensure worker safety by detecting harmful gases. Gas Leak Detection: The module is valuable for monitoring gas leaks from stoves, heaters, and other appliances that use methane or LPG.
Air Quality Monitoring: Used in indoor air quality monitoring systems to detect carbon monoxide emissions.
Using the MQ-9:
Powering the Sensor: The sensor generally requires a 5V DC power supply.Calibration: To obtain precise readings, calibration may be necessary. This involves exposing the sensor to clean air to establish a baseline resistance value.
Reading Values: Similar to previous MQ series sensors, you can use a microcontroller (e.g., Arduino) to read values from the MQ-9 sensor. Connect the analog output to an analog pin and the digital output to a digital input pin on the microcontroller.
Considerations:
Warm-Up Time: The sensor might need some time to stabilize and provide reliable readings.Cross-Sensitivity: The MQ-9 sensor could exhibit cross-sensitivity to gases other than its primary targets. This cross-sensitivity can impact accuracy if other gases are present in the environment.
Environmental Factors: As with all gas sensors, environmental conditions like temperature and humidity can influence their performance.
When integrating the MQ-9 Carbon Monoxide, Methane, and LPG Gas Sensor Module into a project, proper calibration and consideration of potential cross-sensitivity are vital for obtaining accurate and reliable gas concentration readings, especially given the significance of detecting carbon monoxide and flammable gases.
Technical Details
- Model: MQ-9
- Current Consumption (mA): 150
- Operating Voltage (VDC): 5
- Do output: TTL digital 0 and 1 (0.1 and 5V)
- Ao output: 0.1-0.3V (relatively clean)
Physical Attributes
- Length * Width * Height (mm): 35 x 22 x 16
- Weight (gm): 7
Integration with Arduino
Sample Code
Useful Links
Documentation
Package Includes
- 1 x MQ-9 Carbon Monoxide, Methane, and LPG Gas Sensor Module
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