LPG Gas Sensor MQ6 (Analog/Digital)

The MQ-6 LPG & Butane Gas Sensor Module is designed for detecting concentrations of liquefied petroleum gas (LPG), propane, and butane in the air. Utilizing a sensitive SnO₂ (tin dioxide) layer, the sensor exhibits lower conductivity in clean air and higher conductivity when combustible gases are present. This change in conductivity is converted into an output signal corresponding to gas concentration levels. The module offers both analog and digital outputs, allowing for flexible integration into various detection systems. Its fast response time and high sensitivity make it suitable for applications requiring prompt gas leak detection.

Features
High sensitivity to LPG, propane, and butane gases.
Detects gas concentrations ranging from 200 to 10000ppm.
Provides both analog and digital output signals.
Fast response and recovery times for timely detection.
Simple drive circuit for easy implementation.
Long service life with stable performance.
Adjustable sensitivity via onboard potentiometer.
Compact design suitable for various applications.
Specifications
Parameter Value
Sensor Type Semiconductor (SnO₂)
Target Gases LPG, Propane, Butane
Detection Range 200–10000ppm
Operating Voltage 5VDC
Heater Voltage (VH) 5.0V±0.2V AC or DC
Load Resistance (RL) Adjustable
Heater Resistance (RH) 33Ω±3Ω (Room Temp)
Heater Consumption ≤750mW
Sensitivity (S) 10KΩ – 60KΩ in 1000 ppm LPG
Preheat Time ≥48 hours
Operating Temperature 20°C±2°C
Operating Humidity 65%±5% RH
Dimensions ~ 30mm x 20mm x 22mm