MQ136 Gas Sensor Module (Hydrogen Sulfide) MQ-136

Sensitive material of MQ136 gas sensor is SnO2, which with lower conductivity in clean air. When the target H2S gas exist, the sensor’s conductivity is more higher along with the gas concentration rising. Please use simple electrocircuit, Convert change of conductivity to correspond output signal of gas concentration.

MQ136 gas sensor has high sensitity to H2S, also could be used to detect other vapor which contains Sulfur. It has low sensitivity to normal combustible gases, which is with low cost and suitable for different application.

Character:
Good sensitivity to H2S
Long life and low cost
Simple drive circuit

Application:
Domestic H2S concentration detector
Industrial H2S leakage detector
Portable H2S detector

Download: Click here for more technical deteails of MQ136

• Model No.			MQ136
  Sensor Type			Semiconductor
  Standard Encapsulation			Bakelite (Black Bakelite)
  Detection Gas			H2S
  Concentration			1-200ppm ( H2S )
  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 50ppm H2S)
  	Sensitivity	S	Rs(in air)/Rs(50ppm H2S)≥3
  	Slope	α	≤0.6(R100ppm/R50ppmH2S)
  Condition	Tem.  Humidity		20℃±2℃；65%±5%RH
  	Standard test circuit		Vc: 5.0V±0.1V；             VH: 5.0V±0.1V
  	Preheat time		Over 48 hours