MQ5 LPG, Natural & Coal Gas

Description:

• The MQ5 is a semiconductor gas sensor that detects the presence of various combustible gases, primarily LPG (liquefied petroleum gas), natural gas (methane), and coal gas.   
• It operates by measuring the change in conductivity of its sensing element, which is made of tin dioxide (SnO2), when exposed to these gases.   
• It's commonly available as a module with an analog output, allowing for varying levels of gas concentration to be detected.   

Key Features:

• High Sensitivity: Detects low concentrations of LPG, natural gas, and coal gas.   
• Wide Detection Range: Suitable for various applications requiring combustible gas detection.   
• Fast Response: Quickly reacts to changes in gas concentration.   
• Stable and Long Life: Provides reliable performance over an extended period.   
• Adjustable Sensitivity: Often includes a potentiometer for calibrating the sensor's sensitivity.   
• Analog Output: Provides a continuous output signal that varies with gas concentration.   
• Relatively low cost: making it very popular in hobbyist and professional projects.   

Applications:

• Gas Leakage Detection: Home and industrial gas leak detectors.   
• Combustible Gas Monitoring: Monitoring gas levels in kitchens, boilers, and other potentially hazardous areas.   
• Portable Gas Detectors: Handheld devices for safety inspections.   
• Industrial Safety Systems: Integration into systems for monitoring and controlling gas levels.   
• DIY Projects: Used in various Arduino and other microcontroller-based projects.