Description of MQ-4 Smoke Methane Gas Sensor Module
Quick Overview
The MQ-4 Sensor Module is designed for detecting methane and smoke in the air. This versatile sensor is ideal for use in various applications including industrial leak detection, environmental monitoring, and safety systems that require the sensing of flammable gases.
How It Works
The MQ-4 uses a metal oxide semiconductor to detect methane and smoke. The sensor includes a built-in heating element that activates the semiconductor: The heating element raises the temperature, which in turn, increases the sensor's sensitivity. Upon exposure to methane or smoke, the resistance of the semiconductor changes. This change in resistance is converted into an electrical signal which can be read and interpreted by a microcontroller or an analog-to-digital converter.
Technical Specification
- Operating Voltage: 5V DC
- Output Type: Analog
- Sensing Range: 300 to 10,000 ppm for methane
- Preheat Duration: 20-60 seconds
- Operating Temperature: -10°C to 50°C
Key Features
- High Sensitivity: Can detect low levels of methane and smoke.
- Broad Detection Range: Capable of detecting a wide range of methane concentrations.
- Calibration Support: Easy to calibrate for different use-cases.
- Low Power Consumption: Suitable for battery-operated systems.
- Versatile Interface: Analog output makes it easy to interface with various control systems.
Application
- Industrial leak detection systems.
- Environmental monitoring platforms.
- Residential safety measures, such as gas leak alarms.
- Educational STEM kits focused on safety and environmental science.
Summary
In closing, the MQ-4 Sensor serves as an essential tool in detecting methane levels, offering valuable insights for both environmental monitoring and safety precautions in industrial settings.
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