Instrumentation Specialist Question:

Pretty much the same thing since both convert one type of energy into a proportional different type of energy. Like the pressure cell inside a pressure transmitter which we call a transducer or sensor and a I/P converter which we call a converter. Other examples are a analog to digital converters or the sensors in a car's engine which are also called transducers since they are stand alone and their transmitters or monitors are in a different place.