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MQ-3 Alcohol Sensor Module
Home / Sensors

MQ-3 Alcohol Sensor Module

SKU: QA117#1924

57 SAR inc. Vat.

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MQ3 Alcohol Sensor Module

This alcohool sensor is suitable for detecting alcohol concentration on your breath, just like your common breathalyzer.

Getting started with Alcohol Gas Sensor ( MQ-3 )

In this project, we will go over how to build an alcohol sensor with an arduino.

The alcohol sensor we will use is the MQ-3 sensor. This is a sensor that is not only sensitive to alcohol, particularly ethanol, which is the type of alcohol which is found in wine, beer, and liquor.

This type of sensor circuit can be used as a breathalyzer to check a person’s blood alcohol level. Just as we exhale carbon dioxide when we breathe out, we also will breathe out some alcohol if we have alcohol in our blood. Any alcometer device can measure this alcohol content.

The more ethanol in your blood, the more there is in the air on exhalation. This alcohol content gives a good indication for if a person is drunk and how drunk they are.

The amount of alcohol exhaled into the air is proportional to the amount of alcohol which will be found in a person’s blood. Alcometers use a built-in formula to estimate blood alcohol content from exhaled air alcohol content.

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