Protected Face Transducers

Thickness and Flaw Inspection Solutions

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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

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
Frequency
Nominal Element Size
ACCUSCAN-S
CENTRASCAN
VIDEOSCAN
(MHz)
In.
mm
Part /
Item No.
Part /
Item No.
Part /
Item No.
0.5
1
25

A601S-RB

\U8440001

V601-RB

\U8442001

0.5
1.5
39

V689-RB

\U8442029

1
0.5
13

A603S-RB

\U8440005

C603-RB

\U8441002

V603-RB

\U8442005

1
0.75
19

V614-RB

\U8442021

1
1
25

A602S-RB

\U8440003

C602-RB

\U8441001

V602-RB

\U8442003

2.25
0.5
13

A606S-RB

\U8440011

C606-RB

\U8441004

V606-RB

\U8442011

2.25
0.75
19

A605S-RB

\U8440009

V605-RB

\U8442009

2.25
1
25

A604S-RB

\U8440007

C604-RB

\U8441003

V604-RB

\U8442007

2.25
1.5
39

V695-RB

\U8442037

3.5
0.5
13

A682S-RB

\U8440027

V682-RB

\U8442027

3.5
0.75
19

A681S-RB

\U8440025

3.5
1
25

A680S-RB

\U8440023

V680-RB

\U8442023

5
0.5
13

A609S-RB

\U8440017

C609-RB

\U8441006

V609-RB

\U8442017

5
0.75
19

A608S-RB

\U8440015

V608-RB

\U8442015

5
1
25

A607S-RB

\U8440013

V607-RB

\U8442013

10
0.5
13

A611S-RB

\U8440019

V611-RB

\U8442019

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