Gas Sensor - MQ-2: Difference between revisions
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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 | Simple drive circuit<br> | ||
==Specification== | ==Specification== | ||
[[File:MQ-2 0.jpg|200px]] | [[File:MQ-2 0.jpg|200px]] | ||
Detection range: 300 to 10000ppmm | Detection range: 300 to 10000ppmm<br> | ||
The characteristics gas: 1000ppmm, isobutane | The characteristics gas: 1000ppmm, isobutane<br> | ||
Sensitivity: R in air / Rin, typical gas ≥ 5 | Sensitivity: R in air / Rin, typical gas ≥ 5<br> | ||
Sensing Resistance: 1KΩ 50ppm toluene to 20KΩ in. | Sensing Resistance: 1KΩ 50ppm toluene to 20KΩ in.<br> | ||
Response time: ≤ 10s | Response time: ≤ 10s<br> | ||
Recovery time: ≤ 30s | Recovery time: ≤ 30s<br> | ||
Heat resistance: 31Ω ± 3Ω | Heat resistance: 31Ω ± 3Ω<br> | ||
Heating current: ≤ 180mA | Heating current: ≤ 180mA<br> | ||
Heating voltage: 5.0V ± 0.2V | Heating voltage: 5.0V ± 0.2V<br> | ||
Heating power: ≤ 900mW | Heating power: ≤ 900mW<br> | ||
Measuring voltage: ≤ 24V | Measuring voltage: ≤ 24V<br> | ||
Working conditions of ambient temperature: -20 ℃ ~ +55 ℃ | Working conditions of ambient temperature: -20 ℃ ~ +55 ℃<br> | ||
Humidity: ≤ 95% RH | Humidity: ≤ 95% RH<br> | ||
Environmental oxygen content: 21% | Environmental oxygen content: 21%<br> | ||
Storage conditions Temperature: -20 ° C to +70 ° C | Storage conditions Temperature: -20 ° C to +70 ° C<br> | ||
Humidity: ≤ 70% RH | Humidity: ≤ 70% RH<br> | ||
== | ==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== | |||
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== | ==How to buy it== | ||
Click here to buy [Gas Sensor - MQ-2] | Click here to buy [Gas Sensor - MQ-2] | ||
Latest revision as of 06:45, 10 May 2012
Introduction
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
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
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]