Alcohol gas sensor
The MP-3B semiconductor gas sensing element for alcohol detection uses advanced planar production technology, forming a heater and metal oxide semiconductor gas sensing material on a miniature Al2O3 ceramic substrate, with electrode leads drawn out and packaged inside a metal base and cap. When the gas to be detected is present, the higher the concentration of this gas in the air, the higher the conductivity of the sensor. A simple circuit can convert this change in conductivity into an output signal corresponding to the gas concentration.