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
|