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 | + | 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]
