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MQ136 MQ-136 Gas Sensor For Hydrogen Sulfide Gas Leakage Alarms

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MQ136 MQ-136 Gas Sensor For Hydrogen Sulfide Gas Leakage Alarms

Model Number : MQ136 MQ-136

Place of Origin : CN

MOQ : 1PCS

Price : Negotiable

Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram

Supply Ability : 5000PCS

Delivery Time : 5-8 work days

Packaging Details : Standard packaging

Heater Voltage (Vh) : 5.0V ± 0.1V (AC or DC)

Loop Voltage (Vc) : 5.0V ± 0.1V (DC)

Heater Resistance (Rh) : 30Ω ± 3Ω

Heater Power Consumption (Ph) : ≤ 900mW

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MQ136 Gas Sensor For Hydrogen Sulfide Gas Leakage Alarms

Working Principle:

The MQ136 operates based on the principle of gas adsorption on the surface of a semiconductor material. When the target gas (especially H₂S) comes into contact with the heated SnO₂ sensitive layer, the conductivity of the material changes. This change in conductivity is proportional to the concentration of the target gas, which can be converted into a measurable electrical signal through a simple circuit.

Key Features:

High sensitivity to hydrogen sulfide (H₂S)
Good selectivity for sulfide gases
Fast response and recovery times
Stable performance and long service life
Simple driving circuit requirements
Low cost and easy to integrate into detection systems

Applications:

Hydrogen sulfide gas leakage alarms
Industrial waste gas monitoring (especially in chemical, petroleum, and sewage treatment industries)
Portable gas detectors for H₂S
Indoor air quality monitoring in specific environments
Mining safety equipment for sulfide gas detection

Parameter	Symbol	Value	Unit	Remarks
Heater Voltage	Vh	5.0V ± 0.1V	-	AC or DC
Loop Voltage	Vc	5.0V ± 0.1V	-	DC
Heater Resistance	Rh	30Ω ± 3Ω	-	At room temperature
Heater Power Consumption	Ph	≤ 900	mW	-
Detection Range	-	10 - 1000	ppm	For H₂S
Sensitivity	S	Rs (in air) / Rs (in 100ppm H₂S) ≥ 5	-	-
Response Time	T90	≤ 10	s	-
Recovery Time	T10	≤ 30	s	-
Operating Temperature	-	-10 - 50	℃	-
Storage Temperature	-	-20 - 70	℃	-
Relative Humidity	-	≤ 95	% RH	Non-condensing
Pre-heat Time	-	≥ 48	hours	For stable performance
Service Life	-	≥ 5	years	-

MQ136 MQ-136 Gas Sensor For Hydrogen Sulfide Gas Leakage Alarms

Product Tags:

MQ136 hydrogen sulfide gas sensor

gas leakage alarm sensor

MQ-136 H2S gas detector

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