ABSTRACT
Transducers utilizing resistive, capacitive, inductive and resonant effects form the basis of many current measurement systems and will continue to do so in the foreseeable future, supplemented and supported as necessary by other technologies. The simplest form of resistive transducer is the potentiometer, available in both rotary and linear forms. In either case, a change in the output voltage is produced by varying the effective potential divider ratio of the potentiometer. The basic resistive temperature transducer is the resistance thermometer, consisting of a length of platinum wire formed into a small bobbin and protected by a sleeve. Vibrating cylinder transducers operate in a similar manner to other resonant transducers in that their frequency of oscillation is influenced by the parameter they are designed to measure.
