A protected face transducer is a single element longitudinal wave contact transducer that can be used with either a delay line, protective membrane, or protective wear cap.
Advantages:
Provides versatility by offering removable delay line, protective wear cap, and protective membrane
When the transducer is used alone (without any of the options), the epoxy wear face provides good acoustic impedance matching into plastics, many composites, and other low impedance materials
Cases are threaded for easy attachment to the delay line, protective membrane, and wear cap options
