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Alcohol Gas Sensor MQ3

210.00 189.00

MQ3 is a low cost semiconductor sensor which can detect the presence of alcohol gases at concentrations from 0.05 mg/L to 10 mg/L. The sensitive material used for this sensor is SnO2, whose conductivity is lower in clean air. It’s conductivity increases as the concentration of alcohol gases increases. It has high sensitivity to alcohol and has a good resistance to disturbances due to smoke, vapor and gasoline. MQ3 alcohol sensor can be easily interfaced with Microcontrollers, Arduino Boards, Raspberry Pi etc using an Analog to Digital Converter (ADC)

5 in stock

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Product Description

MQ3 is a low cost semiconductor sensor which can detect the presence of alcohol gases at concentrations from 0.05 mg/L to 10 mg/L. The sensitive material used for this sensor is SnO2, whose conductivity is lower in clean air. It’s conductivity increases as the concentration of alcohol gases increases. It has high sensitivity to alcohol and has a good resistance to disturbances due to smoke, vapor and gasoline. MQ3 alcohol sensor can be easily interfaced with Microcontrollers, Arduino Boards, Raspberry Pi etc using an Analog to Digital Converter (ADC). You may also use a comparator to convert analog output to digital and a preset can be used along with it to adjust sensitivity.

Features

  • Low Cost
  • Fast Response
  • Stable and Long Life
  • Good Sensitivity to Alcohol Gas

Technical Data

  • Concentration : 0.05 mg/L ~ 10 mg/L Alcohol
  • Circuit Voltage : 5V ±0.1 AC or DC
  • Heating Voltage : 5V ±0.1 AC or DC
  • Heater Resistance : 33Ω ±5 at Room Temperature
  • Heater Consumption : < 750mW
  • Load Resistance : 200KΩ
  • Operation Temperature : -10°C ~ 70°C

Connection Diagram

MQ3 Alcohol Gas Sensor Connections

MQ3 Alcohol Gas Sensor Connections

Applications

  • Vehicle Alcohol Detector
  • Portable Alcohol Detector

Datasheet

Additional Information

Weight 5 g
Dimensions 19 x 19 x 16.5 mm

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