MQ-136-Hydrogen Sulfide Gas Sensor

The MQ-136 Hydrogen Sulfide Gas Sensor operates based on the change in conductivity of SnO2 (Tin Dioxide) when exposed to hydrogen sulfide gas. In clean air, SnO2 has lower conductivity. As the concentration of hydrogen sulfide increases, the conductivity of the sensor also increases. This change in conductivity is converted into a corresponding output signal indicating the gas concentration.

MQ-136

• Expose To High Temperatures: Avoid exposing the sensor to high temperatures which may damage or degrade the sensor.,
• Use For Other Gases: Do not use the MQ-136 sensor for detecting gases other than hydrogen sulfide, as it is specifically designed for H2S and may not accurately detect other gases.

• Use In Ventilated Areas: Ensure the sensor is used in well-ventilated areas to avoid saturation.,
• Regular Calibration: Calibrate the sensor regularly to maintain accuracy.,
• Use Appropriate Power Supply: Ensure the sensor is powered with the correct voltage as per specifications.

• Description: The sensor is designed to detect hydrogen sulfide gas concentrations effectively, with an analog output ranging from 0 to 5V corresponding to increasing concentrations.

• Description: Connect the TTL output to a microcontroller. The TTL output gives a low signal when hydrogen sulfide is detected. The analog output can also be connected to an ADC (Analog to Digital Converter) of a microcontroller to read varying concentrations.

24 mm

29 mm

3 × 3 × 2 cm

0.010 kg

8 g

19 mm