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NDT Equipment and Accesories
Measuring and Testing Instruments


Protected Face Transducers

 

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

Applications

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

 

Standard Protected Face

 

  • Comfort Fit sleeves are designed to be easily held and provide steady grip while wearing gloves
  • Standard connector style Right Angle BNC (RB), may be available in Straight BNC (SB)
  • Delay line, protective membrane, and wear cap options sold separately from the transducer

 

 

Freq. Nominal
Element Size
Transducer Part Numbers
MHz inches mm ACCUSCAN-S CENTRASCAN VIDEOSCAN
0.5 1.50 38 A689S-RB - V689-RB
1.125 29 A691S-RB - V691-RB
1.00 25 A601S-RB - V601-RB
1.0 1.50 38 A692S-RB - V692-RB
1.125 29 A694S-RB - V694-RB
1.00 25 A602S-RB C602-RB V602-RB
0.75 19 A614S-RB - V614-RB
0.50 13 A603S-RB C603-RB V603-RB
2.25 1.50 38 A695S-RB - V695-RB
1.125 29 A697S-RB - V697-RB
1.00 25 A604S-RB C604-RB V604-RB
0.75 19 A605S-RB - V605-RB
0.50 13 A606S-RB C606-RB V606-RB
3.5 1.00 25 A680S-RB - V680-RB
0.75 19 A681S-RB - V681-RB
0.50 13 A682S-RB - V682-RB
5.0 1.00 25 A607S-RB - V607-RB
0.75 19 A608S-RB - V608-RB
0.50 13 A609S-RB C609-RB V609-RB
10 0.50 13 A611S-RB - V611-RB

 

Transducer Dimensions (in inches)
Nominal Element Size (A) (B) (C)
1.50 1.53 1.75 2.25
1.125 1.53 1.38 1.81
1.00 1.53 1.25 1.63
0.75 1.53 0.99 1.41
0.50 1.53 0.63 1.19

High Temperature Delay Line Options

  • Allows for intermittent contact with hot surfaces*
  • Improves near surface resolution
  • Contouring of delay lines provides better coupling on curved surfaces
  • Warm temperature delay lines (WTD) can be used for room temperature applications

 

Nominal
Element Size
Delay Line
Retaining
Ring
350°F max.
(175°C)
500°F max.
(260°C)
900°F max.
(480°C)
inches mm        
1.00 25 DRN-3 WTD-3-x HTD-3-x VHTD-3-x
0.75 19 DRN-4 WTD-4-x HTD-4-x VHTD-4-x
0.50 13 DRN-5 WTD-5-x HTD-5-x VHTD-5-x

 

*Recommended usage cycle is ten seconds maximum contact followed by one minute of air cooling. However, the transducer itself should not be heated above 122°F (50°C).

X = standard delay line lengths, available in 1/2" (13 mm), 1" (25 mm), 1-1/2" (38 mm). Specify at time of ordering.

 

 
Note: For the delay lines above, a room temperature material longitudinal wave velocity of 0.100 in/µsec ±0.005 in/µsec may be used as an approximation for basic calculations. This value should not be used for engineering design calculations.

 
Contact us for details.


Protective Membrane Option

 

  • Improves coupling on rough or uneven surfaces
  • Dry couple to smooth, clean surfaces

 

Nominal
Element Size
Membranes
Only*
Membrane
Retaining
Ring
Kits†
inches mm pkg of 12 pkg of 60    
1.50 38 PM-1-12 PM-1-60 MRN-1 PMK-1
1.125 29 PM-2-12 PM-2-60 MRN-2 PMK-2
1.00 25 PM-3-12 PM-3-60 MRN-3 PMK-3
0.75 19 PM-4-12 PM-4-60 MRN-4 PMK-4
0.50 13 PM-5-12 PM-5-60 MRN-5 PMK-5

*Available in 36" x 36" x 1/32" sheets. Order part number NPD-665-3101.

† Kit includes 12 Membranes, 1 ring, C-2 couplant

 

 

Protective Wear Cap Option

 


The nylon wear cap provides an economical solution in applications requiring scanning or scrubbing of rough surfaces

 

Nominal
Element Size
Protective
inches mm  
1.50 38 NWC-1
1.125 29 NWC-2
1.00 25 NWC-3
0.75 19 NWC-4
0.50 13 NWC-5