Device that transform energy from one form to another.
Change non-electrical energy in to electrical energy
Example - Thermocouple
Change electrical energy in to non-electrical energy
Example - Actuator
An actuator is a device that actuates or moves something
Usually engineering transducers are set up to either be read visually or to produce an electrical signal that can then conditioned and converted to a discrete digital signal by a data acquisition with an analog to digital converter. Digital signal can then be manipulated for analysis on a computer.
Industrial uses of transducer
Measurement of Temperature,pressure,force,strain,liquid,level,flow rate,electrical conductivity