MQ-4 sensor equivalent, flammable gas sensor.
It has good sensitivity to methane in wide range, and has advantages such as long lifespan, low cost and
simple drive circuit &etc.
Main Applications
It is widely use.
It is widely used in domestic gas leakage alarm, industrial flammable gas alarm and portable gas detector.
Technical P.
of Sensor Characters
CH4 Air Alcohol C3H8
Concentration(ppm)
Fig3.Typical Sensitivity Curve
The ordinate is resistance ratio of the sensor (Rs/R0), the abscissa is concentration of gases. Rs means
resistance in target gas with different concentrati.
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