Matrix - MQ-2 Gas Sensor

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1 Introduction

MQ-2 烟雾传感器

• The Matrix-MQ-2_Gas_Sensor uses the MQ-2 gas sensor which is sensitive to LPG, i-butane, propane, methane ,alcohol, Hydrogen, smoke and etc and is used to detect multiple gas leakage. This makes it suitable in various applications of gas leak detection.
• The output voltage of the module is positively proportional to the gas concentration.

2 Features

• Standard 3 Pin Interface
• PCB Dimension(mm): 24 x 32

• Pin Description:

Pin	Description
S	GPIO
V	Supply Voltage 5V
G	Ground

3 Basic Device Operation

• The MQ-2_Gas_Sensor module mainly consists of a MQ-2 gas sensor which is stable and responsive. The sensor uses SnO2 as its gas sensitive material. When its surrounding environment has combustible gases its conductivity change is positively proportional to the gas concentration and this change will be converted to analog output signals. Its sensitivity can be adjusted via the potentiometer.

5 Update Log

5.1 Feb-24-2016

• Added Sections 1, 2, 3 and 4