TECHNICAL DATA MQ-3 GAS SENSOR FEATURES * High sensitivity to alcohol and small sensitivity to Benzine . * Fast response and High sensitivity * Stable and long life * Simple drive circuit APPLICATION They are suitable for alcohol checker, Breathalyser. SPECIFICATIONS A. Standard work condition

This alcohol sensor is suitable for detecting alcohol concentration on your breath, just like your common breathalyzer. It has a high sensitivity and fast response time. Sensor provides an analog resistive output based on alcohol concentration.

2023年4月5日 · The MQ-3 sensor is a type of gas sensor that is designed to detect the presence of alcohol vapors in the air. It is commonly used in breathalyzer devices, which are used to measure blood alcohol content (BAC) in individuals who are suspected of driving under the influence (DUI).

2018年10月7日 · MQ-3 gas sensor has high sensitity to Alcohol, and has good resistance to disturb of gasoline, smoke and vapor. This sensor provides an analog resistive output based on alcohol concentration. When the alcohol gas exist, the sensor’s conductivity gets higher along with the gas concentration rising.

In this tutorial, we will be interfacing Gas Sensors MQ2, MQ3, MQ7, and MQ135 Gas Sensor With Arduino board to build a gas leakage detector. The gas sensor is a widely used sensor for detecting a number of gases, including carbon monoxide and methane gas.

These Gas Sensor Modules are designed to allow a microcontroller to determine when a preset gas level has been reached or exceeded. The type of gas detected depends on which module you are using.

2022年8月19日 · MQ3 Alcohol Gas Sensor module is a part of the MQ gas sensor family that can detect the concentrations of alcohol gas in the air and outputs its reading as an analog voltage. The sensor can measure concentrations of 0.04mg/L to 4mg/L.

MQ-3 gas sensor has high sensitity to Alcohol, and has good resistance to disturb of gasoline, smoke and vapor. The sensor could be used to detect alcohol with different concentration, it is with low cost and suitable for different application. 31Ω±3Ω(Room Tem.) Tem. Humidity. VH: 5.0V±0.1V. The above is basic test circuit of the sensor.

The Grove - Gas Sensor (MQ3) module is useful for gas leakage detecting (in home and industry). It can detect Alcohol, Benzine, CH4, Hexane, LPG, CO. Based on its fast response time. Measurements can be taken as soon as possible. Also the …

2022年3月16日 · MQ-3 module is a gas sensor that detects the presence of gases like carbon monoxide, hexane, LPG, methane, and alcohol. It is a Metal Oxide Semiconductor (MOS) sensor type that detects alcohol concentration when placed in a voltage divider network.