保护面探头是一种单晶纵波接触式探头，可与延迟块、保护膜或防磨保护盖一起使用。

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
Applications:
·         Straight beam flaw detection
·         Thickness gaging
·         High temperature inspections
·         Inspection of plates, billets, bars, and forgings