The Alcohol Click Board™ has a high sensitivity to alcohol and it can be used to detect alcohol in concentrations from 0.04 to 4mg/l.
Alcohol click carries an MQ-3 Semiconductor sensor for alcohol. The click is designed to run on a 5V power supply only. It communicates with the target microcontroller through the AN pin on the mikroBUS™ line.
MQ-3 Sensor Features
The gas sensing layer on the sensor unit is made of Tin dioxide (SnO2), an inorganic compound that has lower conductivity in clean air. The conductivity increases as the levels of alcohol gas rise.
Sensor Calibration
To calibrate the sensor for the environment you'll be using it in, the Alcohol Click Board™ has a small potentiometer that allows you to adjust the Load Resistance of the sensor circuit.
Key Features
- MQ-3 sensor
- Concentration: 0.04-4mg/l alcohol
- Sensitivity: Rs(in air)/Rs(0.4mg/LAlcohol)≥5
- Interface: Analog
- 5V power supply