Description of MQ-5 High Sensitivity LPG, Natural Flammable Gas Sensor Module
Quick Overview
The MQ-5 sensor module is designed to detect various flammable gases, most notably liquefied petroleum gas (LPG) and natural gas. With high sensitivity and a quick response time, this sensor is widely used in gas leak detection systems, gas analyzers, and environmental monitoring systems.
How It Works
The MQ-5 relies on a SnO2 (tin dioxide) sensor, which has a lower conductivity in clean air. The device includes a built-in heater and semiconductor material: The heater warms the air around the sensor. When flammable gases are present, they react with the heated SnO2. This reaction changes the sensor’s resistance. The change in resistance is read by a microcontroller or other external hardware to quantify the level of the detected gas.
Technical Specification
- Operating Voltage: 5V DC
- Output Type: Analog and Digital
- Sensing Range: 300 to 10,000 ppm for various gases
- Preheat Duration: 20-40 seconds
- Operating Temperature: -20°C to 50°C
Key Features
- Multi-Gas Detection: Sensitive to LPG, natural gas, and other flammable gases.
- Quick Response and Recovery: High-speed sensing and rapid stabilization after detection.
- Calibration Options: Easily adjustable for various environmental conditions.
- Low Power Requirement: Ideal for battery-powered and portable applications.
- Versatile Outputs: Analog and digital output options for different interfacing needs.
Application
- Gas leak detection in residential and commercial spaces.
- Industrial safety systems for gas monitoring.
- Environmental data gathering for air quality.
- Educational STEM kits that teach concepts of safety and chemistry.
Summary
In summary, the MQ-5 Sensor is a crucial component in gas leak detection systems. Its high sensitivity to LPG and natural gases ensures a safer environment in both residential and commercial spaces.
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