Radar level measurement is based on the principle of measuring the time required for the microwave
pulse and its reflected echo to make a complete return trip between the non-contacting transducer and the
sensed material level. Then, the transceiver converts this signal electrically into distance/level and
presents it as an analogue and/or digital signal. The transducer’s output can be selected by the user to be
directly or inversely proportional to the span.