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

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

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