Description of MQ-3 High Sensitivity Alcohol Detector Sensor Module
Quick Overview
The MQ-3 is a high-sensitivity sensor designed to detect ethanol and alcohol vapors. Frequently utilized in breathalyzers, vehicle alcohol detection systems, and environmental monitoring, this sensor offers accurate and rapid response times for a range of alcohol concentrations.
How It Works
The MQ-3 sensor employs a tin dioxide (SnO2) semiconductor that has a lower conductivity in clean air. It has an internal heater that facilitates the following: As the sensor heats up, the air around it circulates. If alcohol vapors are present, they interact with the heated SnO2. This interaction alters the sensor's resistance. A microcontroller or other reading device interprets this resistance change to determine the alcohol concentration.
Technical Specification
- Operating Voltage: 5V DC
- Output Type: Analog
- Sensing Range: 0.04 to 4 mg/l of alcohol
- Preheat Duration: 20-60 seconds
- Operating Temperature: -10°C to 70°C
Key Features
- High Sensitivity: Sensitive to low alcohol concentrations for more accurate readings.
- Fast Response Time: Can detect changes in alcohol levels quickly.
- Easy Calibration: Offers straightforward sensitivity adjustments.
- Low Power Consumption: Makes it suitable for portable and battery-operated devices.
- Versatility: Can be easily integrated into various monitoring systems.
Application
- Application of an MQ-3 High Sensitivity Alcohol Detector Sensor Module Module Breathalyzers for personal or law enforcement use.
- Vehicle ignition interlock systems.
- Alcohol monitoring in industrial and healthcare environments.
- Educational STEM kits focused on health and safety.
Summary
In summary, the MQ-3 Sensor provides an easy and reliable way to detect alcohol levels in the atmosphere, making it particularly useful in breathalyzers and alcohol detection systems.
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