Main Classification Of Sensors

By purpose
Pressure and force sensitive sensors, position sensors, liquid level sensors, energy consumption sensors, speed sensors, acceleration sensors, radiation sensors, and thermal sensors.
According to principle
Vibration sensors, humidity sensors, magnetic sensors, gas sensors, vacuum sensors, biosensors, etc.
Press output signal
Analog sensor: Converts the measured non electrical quantity into an analog electrical signal.
Digital sensor: Converts the measured non electrical quantity into a digital output signal (including direct and indirect conversion).
Pseudo digital sensor: The output that converts the measured signal quantity into a frequency signal or a short period signal (including direct or indirect conversion).
Switch sensor: When a measured signal reaches a specific threshold, the sensor outputs a set low or high level signal accordingly.