In general, the ultrasonic transducer comes in variations. They differ in shape and size and also in the kind of services they will provide. Therefore, a person should make the proper analysis and then choose the best option.
As the name suggests, it contains two crystal elements that have a separation by the acoustic barrier. Out of two elements, one generates a sound wave and the other act as a receiver.
Dual element transducer provides the facility of weld overlay and disbound inspection. Even crack detection is possible with the use of the transducer.