Angle Beam Transducers
Miniature Angle Beam Transducers and Wedges are used primarily for testing of weld integrity. Their design allows them to be easily scanned back and forth and provides a short approach distance.
Angle beam transducers are single element transducers used with a wedge to introduce a refracted shear wave or longitudinal wave into a test piece.
Advantages:
- Three-material design of our Accupath wedges improves signal-to-noise characteristics while providing excellent wear resistance
- High temperature wedges available for in-service inspection of hot materials
- Wedges can be customized to create nonstandard refracted angles
- Available in interchangeable or integral designs
- Contouring available
- Wedges and integral designs are available with standard refracted angles in aluminum
Applications:
- Flaw detection and sizing
- For time-of-flight diffraction transducers see page 25
- Inspection of pipes, tubes, forgings, castings, as well as machined and structural components for weld defects or cracks
Miniature Screw-In Transducers
- Screw-in design 303 stainless steel case
- Transducers are color coded by frequency
- Compatible with Short Approach, Accupath, High Temperature and Surface Wave Wedges
Nominal Element Size |
Freq. |
Transducer Part Numbers |
inches |
mm |
MHz |
ACCUSCAN-S |
CENTRASCAN |
VIDEOSCAN |
0.50 |
13 |
1.0 |
A539S-SM |
C548-SM |
V539-SM |
2.25 |
A540S-SM |
C540-SM |
V540-SM |
3.5 |
A545S-SM |
C545-SM |
V545-SM |
5.0 |
A541S-SM |
C541-SM |
V541-SM |
10 |
A547S-SM |
- |
V547-SM |
0.375 |
10 |
1.5 |
A548S-SM |
- |
- |
2.25 |
A549S-SM |
C549-SM |
V549-SM |
3.5 |
A550S-SM |
C550-SM |
V550-SM |
5.0 |
A551S-SM |
C551-SM |
V551-SM |
10 |
A552S-SM |
- |
V552-SM |
0.25 |
6 |
2.25 |
A542S-SM |
C542-SM |
V542-SM |
3.5 |
A546S-SM |
C546-SM |
V546-SM |
5.0 |
A543S-SM |
C543-SM |
V543-SM |
10 |
A544S-SM |
C544-SM |
V544-SM |

Transducer Dimensions
(in inches) |
Nominal Element Size |
(A) |
(B) |
(C) |
Thread Pitch |
0.50 |
0.71 |
0.685 |
0.257 |
11/16 - 24 |
0.375 |
0.58 |
0.65 |
0.257 |
9/16 - 24 |
0.25 |
0.44 |
0.55 |
0.22 |
3/8 - 32 |

Accupath Wedges
- Small wedge footprint
- Pointed toe design allows transducer rotation even when the nose is touching a weld crown
- Special wedge design for use with 10 MHz transducer
Miniature Screw-In Wedges for 1-5 MHz
Nominal
Element Size |
Wedge Part Numbers |
in |
mm |
Short Approach† |
Accupath* |
High Temp*
500°F (260°C) |
Very High Temp*
900°F
(480°C) |
Surface Wave 90° |
0.50 |
13 |
ABSA-5T-X° |
ABWM-5T-X° |
ABWHT-5T-X° |
ABWVHT-5T-X° |
ABWML-5T-90° |
0.375 |
10 |
ABSA-7T-X° |
ABWM-7T-X° |
ABWHT-7T-X° |
ABWVHT-7T-X° |
ABWML-7T-90° |
0.25 |
6 |
ASSA-4T-X° |
ABWM-4T-X° |
ABWHT-4T-X° |
ABWVHT-4T-X° |
ABWML-4T-90° |
Miniature Screw-In Wedges for 10 MHz Transducers
Nominal
Element Size |
Wedge Part Numbers |
in |
mm |
Short Approach† |
Accupath* |
Surface Wave 90° |
0.50 |
13 |
ABSA-5T-X° |
ABWM-5ST-X° |
ABWML-5ST-90° |
0.375 |
10 |
ABSA-7T-X° |
ABWM-7ST-X° |
ABWML-7ST-90° |
0.25 |
6 |
ASSA-4T-X° |
ABWM-4ST-X° |
ABWML-4ST-90° |
† Short Approach Wedges are available in standard refracted shear wave angles of 45°, 60°, and 70° in steel at 5.0 MHz.
*Accupath Wedges are available in standard refracted shear wave angles of 30°, 45°, 60°, and 70° in steel at 10 MHz.

Accupath and Surface Wave Wedge Dimensions*
(Miniature Screw-in) |
Fits Nominal Element Size (in inches) |
|
|
0.5 |
|
0.375 |
|
0.25 |
|
|
(A) |
(B) |
(C) |
(D) |
|
(A) |
(B) |
(C) |
(D) |
|
(A) |
(B) |
(C) |
(D) |
30° |
|
0.72 |
1.22 |
0.77 |
0.54 |
|
0.62 |
1.03 |
1.03 |
0.42 |
|
0.49 |
0.66 |
0.45 |
0.23 |
45° |
|
0.70 |
1.03 |
0.73 |
0.38 |
|
0.60 |
0.85 |
0.61 |
0.32 |
|
0.43 |
0.61 |
0.43 |
0.235 |
60° |
|
0.74 |
1.19 |
0.73 |
0.45 |
|
0.67 |
1.00 |
0.61 |
0.367 |
|
0.48 |
0.71 |
0.43 |
0.268 |
70° |
|
0.79 |
1.34 |
0.73 |
0.50 |
|
0.69 |
1.12 |
0.61 |
0.406 |
|
0.50 |
0.81 |
0.43 |
0.305 |
90° |
|
1.25 |
1.84 |
0.77 |
- |
|
1.00 |
1.48 |
1.48 |
- |
|
0.83 |
1.13 |
0.45 |
- |
Short Approach Wedges
- Smallest footprint
- Short approach distance allows for inspection closest to the weld crown

Short Approach Wedge Dimensions
(Miniature Screw-in)
|
Fits Nominal Element Size (in inches)
|
|
|
0.5
|
|
0.375
|
|
0.25
|
|
|
(A)
|
(B)
|
(C)
|
(D)
|
|
(A)
|
(B)
|
(C)
|
(D)
|
|
(A)
|
(B)
|
(C)
|
(D)
|
45°
|
|
0.70
|
1.03
|
0.73
|
0.38
|
|
0.60
|
0.85
|
0.61
|
0.32
|
|
0.43
|
0.61
|
0.43
|
0.235
|
60°
|
|
0.74
|
1.19
|
0.73
|
0.45
|
|
0.67
|
1.00
|
0.61
|
0.367
|
|
0.48
|
0.71
|
0.43
|
0.268
|
70°
|
|
0.79
|
1.34
|
0.73
|
0.50
|
|
0.69
|
1.12
|
0.61
|
0.406
|
|
0.50
|
0.81
|
0
|
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