MQ-2 gas sensor has high sensitity to LPG, Propane and Hydrogen, also could be used to Methane and other combustible steam, smoke, it is with low cost and suitable for different application.
Model No.: MQ-2
Sensor Type: Semiconductor
Standard Encapsulation: Bakelite (Black Bakelite)
Detection Gas: Combustible gas
Concentration: 300-10000ppm( Combustible gas)
Circuit Loop Voltage: Vc ≤24V DC
Heater Voltage: VH 5.0V±0.2V ACorDC
Load Resistance: RL Adjustable
Character Heater Resistance: RH 31Ω±3Ω(Room Tem. )
Heater consumption: pH ≤900mW
Sensing Resistance: RS 2KΩ-20KΩ(in 2000ppm C3H8 )
Sensitivity: S RS(in air)/RS(1000ppm isobutane)≥5
Slope: α ≤0.6(R5000ppm/R3000ppm CH4)
Conditio: n Tem. 20℃±2℃ Humidity 65%±5%RH
Standard test circuit Vc: 5.0V±0.1V;
VH: 5.0V±0.1V
Preheat time: Over 48 hours