MQ-3 Alcohol Ethanol Gas Sensor Module

The MQ-3 Alcohol Ethanol Gas Sensor Module is a highly sensitive and selective device designed to detect and measure alcohol and ethanol gas concentrations in the surrounding environment. It utilizes a semiconductor oxide sensing element to detect these gases, providing a reliable and accurate output signal.

Key Features:

• High Sensitivity: Detects even low concentrations of alcohol and ethanol gas.
• Selectivity: Primarily responds to alcohol and ethanol gases, minimizing interference from other gases.
• Analog Output: Provides an analog voltage output proportional to the concentration of the detected gas.
• Temperature Compensation: Automatically compensates for temperature variations to ensure accurate measurements.
• Compact Size: Small and lightweight for easy integration into various applications.

Applications:

• Alcohol Breath Analyzer: Measures alcohol levels in breath for applications like law enforcement and personal use.
• Industrial Process Control: Monitors alcohol levels in industrial processes.
• Scientific Research: Studies alcohol and ethanol gas behavior.
• Environmental Monitoring: Monitors alcohol emissions.

DATA SHEET AND USECASE

Key Specification:

• Operating Voltage: 5V DC
• Current Consumption: 150mA
• Sensing Range: 0.04 mg/L to 4 mg/L Alcohol
• Load Resistance: Adjustable (typically 2kΩ - 47kΩ)
• Sensitivity: High to alcohol vapors, moderate to benzene and smoke
• Warm-up Time: ≥ 20 seconds
• Operating Temperature: -10°C to 50°C