Difference between revisions of "Gas Sensor - MQ-2"

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Arduino MQ-2 gas sensor module are used in gas leakage detecting equipments in family and industry, are suitable for detecting of LPG, i-butane, propane, methane ,alcohol, Hydrogen, smoke.  
 
Arduino MQ-2 gas sensor module are used in gas leakage detecting equipments in family and industry, are suitable for detecting of LPG, i-butane, propane, methane ,alcohol, Hydrogen, smoke.  
  
Features:  
+
Features: <br>
 
Wide detecting scope<br>             
 
Wide detecting scope<br>             
 
Fast response and High sensitivity<br>  
 
Fast response and High sensitivity<br>  
 
Stable and long life<br>                 
 
Stable and long life<br>                 
Simple drive circui<br>
+
Simple drive circuit<br>
  
 
==Specification==
 
==Specification==
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Humidity: ≤ 70% RH<br>
 
Humidity: ≤ 70% RH<br>
  
==document==
+
==Document==
 
[MQ-2 datasheet]
 
[MQ-2 datasheet]
  
 
==Usage==
 
==Usage==
 +
[[File:MQ-usage.jpg]]
 +
 
[[File:MO-2 2.jpg]]
 
[[File:MO-2 2.jpg]]
 +
 +
VCC - 5V
 +
GND - GND
 +
S  - Analog pin0
  
 
==Example code==
 
==Example code==

Latest revision as of 06:45, 10 May 2012

Introduction

MQ-2 1.jpg

Arduino MQ-2 gas sensor module are used in gas leakage detecting equipments in family and industry, are suitable for detecting of LPG, i-butane, propane, methane ,alcohol, Hydrogen, smoke.

Features:
Wide detecting scope
Fast response and High sensitivity
Stable and long life
Simple drive circuit

Specification

MQ-2 0.jpg

Detection range: 300 to 10000ppmm
The characteristics gas: 1000ppmm, isobutane
Sensitivity: R in air / Rin, typical gas ≥ 5
Sensing Resistance: 1KΩ 50ppm toluene to 20KΩ in.
Response time: ≤ 10s
Recovery time: ≤ 30s
Heat resistance: 31Ω ± 3Ω
Heating current: ≤ 180mA
Heating voltage: 5.0V ± 0.2V
Heating power: ≤ 900mW
Measuring voltage: ≤ 24V
Working conditions of ambient temperature: -20 ℃ ~ +55 ℃
Humidity: ≤ 95% RH
Environmental oxygen content: 21%
Storage conditions Temperature: -20 ° C to +70 ° C
Humidity: ≤ 70% RH

Document

[MQ-2 datasheet]

Usage

MQ-usage.jpg

MO-2 2.jpg

VCC - 5V
GND - GND
S   - Analog pin0

Example code

int sensorValue;
void setup()
{
 Serial.begin(9600);      // sets the serial port to 9600
}
void loop()
{
 sensorValue = analogRead(0);       // read analog input pin 0
 Serial.println(sensorValue, DEC);  // prints the value read
 delay(100);                        // wait 100ms for next reading
}

How to buy it

Click here to buy [Gas Sensor - MQ-2]