MQ-8 Hydrogen Gas Sensor Information

Sensor Details

What is the MQ-8 Sensor?

The MQ-8 gas sensor has high sensitivity to Hydrogen (H2). It is a low-cost sensor suitable for detecting hydrogen concentrations in the air, making it ideal for safety and leak detection applications.

Primary Gas Detected:

  • Hydrogen (H2)
  • Also responds to other combustible gases like LPG and smoke.

How does it work?

Similar to other MQ-series sensors, it uses a Tin Dioxide (SnO2) sensing element. The resistance of this element decreases as the concentration of hydrogen gas increases. This change is then read by a microcontroller to determine the gas level.

Common Applications:

  • Industrial gas leak detectors.
  • Safety systems for hydrogen fuel cells.
  • Laboratories and chemical plants.
  • Portable hydrogen gas detectors.
MQ-8 Sensor