A measuring transducer is a measuring instrument (also see Sensor) that incorporates ready-to-use electronics in addition to on-board sensors and provides an output quantity having a specified relation to the input quantity as per basic standard DIN 1319. The term transmitter is also used as for the pressure or level transmitter.
Many different physical quantities are used as input signals. The element of the measuring equipment that is directly affected by the measurand is known as the pick-up or sensor (as per DIN 1319). As output signals, the quantities frequently produce a standardised analog electric signal such as 0 - 20 mA, 4 - 20 mA, or 0 - 10 V, but can also have a digital signal structure.
These measuring transducers typically offer galvanic isolation for measurand and output quantity.