Tags: MQ, 5, Gas, Sensor, Module, Methane, LPG, Liquid, Propane,

MQ 5 Gas Sensor

  • 9.00 AED
    • Ex Tax:9.00 AED
    • Brands China
    • Product Code: MQ
    • Availability: In Stock
    This MQ-5 Methane LPG Liquid Propane Gas Sensor Module is widely used in gas leakage detecting pieces of equipment in family and industry, are suitable for detecting of LPG, natural gas, town gas, avoid the noise of alcohol and cooking fumes and cigarette smokeThe MQ5 ( MQ-5 ) is used in gas leakage..

    This MQ-5 Methane LPG Liquid Propane Gas Sensor Module is widely used in gas leakage detecting pieces of equipment in family and industry, are suitable for detecting of LPG, natural gas, town gas, avoid the noise of alcohol and cooking fumes and cigarette smoke

    The MQ5 ( MQ-5 ) is used in gas leakage detecting equipment in consumer and industry applications, this sensor is suitable for detecting LPG, natural gas, coal gas. Avoid the noise of alcohol, cooking fumes, and cigarette smoke. The sensitivity can be adjusted by the potentiometer.

    Sensitive material of MQ-5 gas sensor is SnO2, which with lower conductivity in clean air. When the target combustible gas exists, The sensor’s conductivity is higher along with the gas concentration rising. Please use simple electro circuit, Convert change of conductivity to the corresponding output signal of gas concentration.

    MQ-5 gas sensor has high sensitivity to Methane, Propane, and Butane, and could be used to detect both Methane and Propane. The sensor could be used to detect different combustible gas especially Methane, it is with low cost and suitable for different application

    Features :

    • High sensitivity to LPG, natural gas, town gas.
    • Small sensitivity to alcohol, smoke.
    • Stable and long life.
    • Simple drive circuit.
    • Fast response. 


    Gas Sensor Pinout


    mq-gas-sensor-pinout

     The MQ-xx have six pins, most of the Gas sensors in these series will have six pins.

    The center two pins are called as H pins (Heater pins),

    Remaining pins both up & down side called as A and B pins. Both pins are connected with separate electro-chemical sensor.

    We can use both pins to bring output, only thing is No H pins are connected with micro controller or Arduino, because it draws much current.

    gas-sensor-connection-diagram

    Gas sensor Wiring

    mq-gas-sensor-arduino-hookup

    The both A pins can be connected together and applied to the +5V DC supply, By the way both B pins can be connected together and fed into the Output terminal. To vary the sensitivity we can connect the Rl resistor with B pin to Ground, it may valued from 2KΩ to 47KΩ, when you connecting lower value the less sensitivity, and the higher value gives good sensitivity but less accurate for higher concentration of Gas. The heater pins H & H should connected separately with +5V and Gnd.

    Gas Sensor Arduino Hookup

    As per the wiring diagram, the MQ-XX series sensor can be connected with Arduino board. The resistor (10K) connected with B pin to Gnd to maintain sensitivity level of Gas sensor at particular point, if you need variable sensitivity from your sensor you can use variable resistor instead for 10K.

    A and H pins are connected together with +5V power source pin of Arduino board, and Separate H pin is connected with GND, Both B pins are connected together and linked to Arduino’s Analog pin A0.

    Just finished hookup, Don’t Make mistakes in the wiring if any thing goes wrong the sensor could damaged, otherwise you are advised to use breakout boards of Gas sensor.

    These kind of breakout boards are easy to handle and it can directly connected with microcontroller or Arduino board,

    It has four pins namely +Vcc, Gnd, Do, Ao.

    The breakout board with three pins will only give Analog output(Ao), The four pin (With ADC) breakout board will give Ao and also Digital output (Do) in standard logic level.

     

    Gas sensor Arduino Code

     

    /* theorycircuit.com */
    /* this code can be used for MQ2,MQ5,MQ-xx series Sensors*/
    int mqxx_analogPin = A0; // connected to the output pin of MQ-xx 
    
    void setup(){
      Serial.begin(9600); // open serial at 9600 bps
    }
    
    void loop()
    {
      // give ample warmup time for readings to stabilize
    
      int mqxx_value = analogRead(mqxx_analogPin);
      Serial.println(mqxx_value);
    
      delay(1000); //Just here to slow down the output.
    }
    
    
    

     

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