MQ6 LPG, Butane, Propane Gas Sensor Module
 
The MQ6 gas sensor is a device that has a fast response to Liquid petroleum gas, generally used in equipment to detect gas leaks in industrial and other works. This is a simple sensor suitable for detecting LPG in the air that mostly contains butane and propane.
The sensor allows us to detect if there are gas concentrations anywhere and we can hence use it in various industrial and commercial projects.
The Digital Pin of this sensor allows it to operate even without a microcontroller and that is manageable when you are trying to catch one specific gas. The sensor can also detect different combustible gas.
 
Features
High sensitivity to LPG, iso-butane, propane
Small sensitivity to alcohol, smoke.
Fast response
Stable and long life
Simple drive circuit
Preheat duration 20 seconds
Can be used as a Digital or analog sensor
You can vary the Sensitivity of Digital pin using the potentiometer
 
Specifications
Detecting Concentration: 300 to 10000 ppm
Input Voltage: 5 VDC
Power: 150 mA
Digital Output Voltage: TTL digital 0 and 1 (0.1 V and 5 V)
Analog Output Voltage (relatively clean): 0.1 V to 0.3 V
Analog Output Voltage (highest concentration): 4 V
PCB Size: 32 x 20 x 22 mm
 
Pinout of MQ6 Sensor
Pin Name
Description
Vcc
Power Pin requires an operating voltage of 5V.
GND
Ground pin.
DO
Digital out the pin, to get the digital output from the sensor, need to set the threshold value using Pot.
AO
Analog out the pin. It based the output of this pin on the intensity of the LPG or other gas.