MQ-D4B Flat semiconductor sensor

Products

Combustible Gas Sensor

MQ-D4B Flat semiconductor sensor

Application:

1. Combustible gas leak monitoring devices and fire/safety detection systems for households, factories, and commercial use
2. Combustible gas leak alarm and gas leak detector.

Product characteristics:

1.Has good sensitivity to methane over a wide concentration range
2.Strong anti-interference ability, low power consumption, fast response and recovery, and good stability, long lifespan, low cost

1. Description

The MQ-D4B combustible gas sensor adopts a multi-layer film manufacturing process, in which heaters and metal oxide semiconductor gas sensing layers are respectively fabricated on both sides of a micro AL2O3 ceramic substrate, and encapsulated in a metal shell. When there is a detected gas in the ambient air, the conductivity of the sensor changes. The higher the concentration of the gas, the higher the conductivity of the sensor. A simple circuit can be used to convert this change in conductivity into an output signal corresponding to the gas concentration

2. Appearance and dimension

3. Technical specifications

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