DEM (Twin Crystal)
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Dual Compression Transducers

Features

  • Dual normal beam compression wave contact transducers
  • Semi Circular lead zirconate titanate crystals
  • Max operating temperature 50°C / 120°C
  • High temperature options available up to 285°C / 545°F  denoted by “HT” in the title
  • Medium dampening for medium bandwidth
  • Versions available with improved resolution and sensitivity see PDEM Transducers

Common applications:

  • Aerospace
  • Composites
  • Thickness inspection
  • High temperature inspection

Specification

Transducer Models

Product Code Description Frequency (MHz) Crystal Size (mm / inches) Nearfield Length in Steel (mm / inches)
DEM2525 2.25MHz ¼” Twin element 2.25 6.4mm / 1/4″ 3.9mm / 0.154″
DEM3725 2.25MHz 3/8″ Twin element 2.25 9.5mm / 3/8″ 8.5mm / 0.335″
DEM5025 2.25MHz ½” Twin element 2.25 12.7mm / 1/2″ 15.2mm / 0.598″
DEM2550 5MHz ¼” Twin element 5 6.4mm / 1/4″ 8.6mm / 0.339″
DEM3750 5MHz 3/” Twin element 5 9.5mm / 3/8″ 18.9mm / 0.744″
DEM5050 5MHz ½” Twin element 5 12.7mm / 1/2″ 33.8mm / 1.331″
DEM3710 10MHz 3/8″ Twin element 10 9.5mm / 3/8″ 37.9mm / 1.492″
DEM5010 10MHz ½” Twin element 10 12.7mm / 1/2″ 67.7mm / 2.665″

Case Dimensions & Details

Transducer Version Crystal size Width/Diameter (mm / inches) Height (mm / inches) Connector Options Position Options
6.4mm / 1/4″ 10mm / 0.394″ 25.4mm / 1″ D Side
9.5mm / 3/8″ 12.7mm / 0.5″ 25.4mm / 1″ D Side
12.7mm / 1/2″ 16.2mm / 0.638″ 25.4mm / 1″ D Side
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