Position sensors includes optical, magnetic and various other complex types. There are a large number of position sensors, for example capacitive type, which is a form of non-conduct measurement. The types of scale which is to be used in the position sensors are determined on what is being monitored. Inductive sensors are also a type of non-conductors that shows the change of any kind of resistance effectively in a coil. The position sensors which are non-conductors in nature do not require any physical contact between the signal providing device and the element that is being sensed. The ultrasonic position sensors act as transmitters which transform the electrical energy into acoustic energy.