I2, I3, I4: Immersion Transducers


 
All model I2, I3 and I4 transducers have straight- mounted waterproof UHF connectors. Available I2 element diameters are 0.25, 0.375 and 0.5 inch (6, 10 and 13 mm). I3 have 0.75 inch (19 mm) and I4 have 1.0 inch (25 mm) element diameters. GP series* offer the best combination of sensitivity and resolution for general applications. HR series* are highly-damped for applications where high resolution is required.
 
C series* have piezocomposite elements and offer superior penetration, resolution and signal-to-noise ratio in highly-attenuative and coarse-grain materials.
 
Immersion Transducers are typically used in automated and manual-scanning systems using water or other liquid as a coupling medium. This enables the inspection of parts with complex geometries and near-surface resolution superior to that of contact transducers. Spherical (point) or cylindrical (line) focusing can further improve sensitivity and resolution. Focal length and focal type must be specified. See Focal Length & Type for more information.

Enquiry

Features

Typical Applications
  • Inspection of complex geometries

 

Series


 
*GP Series – General Purpose series of transducers are recommended for most applications and have a good trade-off between sensitivity and resolution. They have a medium frequency bandwidth of 40-65% at -6db but with more ring-down cycles in the waveform.
 

 
*HR Series – High Resolution series of transducers are highly damped and recommended for applications where enhanced axial and near-surface resolution are more important. Generally includes thickness measurement and near-surface flaw detection. HR series have less sensitivity and the GP or C series with -6db frequency bandwidth of 50-100% range.
 

 
*C Series – Composite (Piezocomposite) series of transducers have superior sensitivity and penetration, especially in highly-attenuative materials. C Series have both higher resolution, sensitivity, and have wide bandwidth (60-120% at -6db) due to the lower acoustic impedance of the material. They couple more efficiently into plastic wedges, delay lines, and water.

Specifications

Part Numbers
Frequency (MHz) Element Diameter Case Focus Part Number
inch mm GP* HR* C*
1 0.75 19 I3 None 00-011201 NF 00-011313 NF
Spherical 00-011201 X.XS 00-011313 X.XS
Cylindrical 00-011201 Y.YC 00-011313 Y.YC
1 25.4 I4 None 00-011314 NF 00-010683 NF
Spherical 00-011314 X.XS 00-010683 X.XS
Cylindrical 00-011314 Y.YC 00-010683 Y.YC
2.25 0.25 6.4 I2 None 00-011315 NF 00-011316 NF 00-011317 NF
Spherical 00-011315 X.XS 00-011316 X.XS 00-011317 X.XS
Cylindrical 00-011315 Y.YC 00-011316 Y.YC 00-011317 Y.YC
0.375 9.5 I2 None 00-011318 NF 00-011319 NF 00-011144 NF
Spherical 00-011318 X.XS 00-011319 X.XS 00-011144 X.XS
Cylindrical 00-011318 Y.YC 00-011319 Y.YC 00-011144 Y.YC
0.5 12.7 I2 None 00-010830 NF 00-011114 NF 00-011320 NF
Spherical 00-010830 X.XS 00-011114 X.XS 00-011320 X.XS
Cylindrical 00-010830 Y.YC 00-011114 Y.YC 00-011320 Y.YC
0.75 19 I3 None 00-011321 NF 00-011322 NF 00-011146 NF
Spherical 00-011321 X.XS 00-011322 X.XS 00-011146 X.XS
Cylindrical 00-011321 Y.YC 00-011322 Y.YC 00-011146 Y.YC
1 25.4 I4 None 00-011323 NF 00-011324 NF 00-011353 NF
Spherical 00-011323 X.XS 00-011324 X.XS 00-011353 X.XS
Cylindrical 00-011323 Y.YC 00-011324 Y.YC 00-011353 Y.YC
3.5 0.25 6.4 I2 None 00-011325 NF 00-011326 NF 00-011327 NF
Spherical 00-011325 X.XS 00-011326 X.XS 00-011327 X.XS
Cylindrical 00-011325 Y.YC 00-011326 Y.YC 00-011327 Y.YC
0.375 9.5 I2 None 00-011328 NF 00-011329 NF 00-011141 NF
Spherical 00-011328 X.XS 00-011329 X.XS 00-011141 X.XS
Cylindrical 00-011328 Y.YC 00-011329 Y.YC 00-011141 Y.YC
0.5 12.7 I2 None 00-011330 NF 00-011331 NF 00-010858 NF
Spherical 00-011330 X.XS 00-011331 X.XS 00-010858 X.XS
Cylindrical 00-011330 Y.YC 00-011331 Y.YC 00-010858 Y.YC
0.75 19 I3 None 00-011332 NF 00-011333 NF 00-011334 NF
Spherical 00-011332 X.XS 00-011333 X.XS 00-011334 X.XS
Cylindrical 00-011332 Y.YC 00-011333 Y.YC 00-011334 Y.YC
1 25.4 I4 None 00-011335 NF 00-011336 NF 00-010586 NF
Spherical 00-011335 X.XS 00-011336 X.XS 00-010586 X.XS
Cylindrical 00-011335 Y.YC 00-011336 Y.YC 00-010586 Y.YC
5 0.25 6.4 I2 None 00-011337 NF 00-011351 NF 00-011338 NF
Spherical 00-011337 X.XS 00-011351 X.XS 00-011338 X.XS
Cylindrical 00-011337 Y.YC 00-011351 Y.YC 00-011338 Y.YC
0.375 9.5 I2 None 00-011339 NF 00-011340 NF 00-010679 NF
Spherical 00-011339 X.XS 00-011340 X.XS 00-010679 X.XS
Cylindrical 00-011339 Y.YC 00-011340 Y.YC 00-010679 Y.YC
0.5 12.7 I2 None 00-010778 NF 00-010594 NF 00-011013 NF
Spherical 00-010778 X.XS 00-010594 X.XS 00-011013 X.XS
Cylindrical 00-010778 Y.YC 00-010594 Y.YC 00-011013 Y.YC
0.75 19 I3 None 00-010585 NF 00-011341 NF 00-010868 NF
Spherical 00-010585 X.XS 00-011341 X.XS 00-010868 X.XS
Cylindrical 00-010585 Y.YC 00-011341 Y.YC 00-010868 Y.YC
1 25.4 I4 None 00-011152 NF 00-011350 NF 00-011153 NF
Spherical 00-011152 X.XS 00-011350 X.XS 00-011153 X.XS
Cylindrical 00-011152 Y.YC 00-011350 Y.YC 00-011153 Y.YC
10 0.25 6.4 I2 None 00-011352 NF 00-010833 NF 00-011342 NF
Spherical 00-011352 X.XS 00-010833 X.XS 00-011342 X.XS
Cylindrical 00-011352 Y.YC 00-010833 Y.YC 00-011342 Y.YC
0.375 9.5 I2 None 00-010825 NF 00-010644 NF 00-011343 NF
Spherical 00-010825 X.XS 00-010644 X.XS 00-011343 X.XS
Cylindrical 00-010825 Y.YC 00-010644 Y.YC 00-011343 Y.YC
0.5 12.7 I2 None 00-010595 NF 00-011349 NF 00-011344 NF
Spherical 00-010595 X.XS 00-011349 X.XS 00-011344 X.XS
Cylindrical 00-010595 Y.YC 00-011349 Y.YC 00-011344 Y.YC
0.75 19 I3 None 00-011148 NF 00-010369 NF 00-011345 NF
Spherical 00-011148 X.XS 00-010369 X.XS 00-011345 X.XS
Cylindrical 00-011148 Y.YC 00-010369 Y.YC 00-011345 Y.YC
15 0.25 6.4 I2 None 00-011149 NF 00-011346 NF
Spherical 00-011149 X.XS 00-011346 X.XS
Cylindrical 00-011149 Y.YC 00-011346 Y.YC
0.375 9.5 I2 None 00-010597 NF 00-011347 NF
Spherical 00-010597 X.XS 00-011347 X.XS
Cylindrical 00-010597 Y.YC 00-011347 Y.YC
0.5 12.7 I2 None 00-010774 NF 00-011348 NF
Spherical 00-010774 X.XS 00-011348 X.XS
Cylindrical 00-010774 Y.YC 00-011348 Y.YC

* GP = General Purpose; HR = High Resolution; C = Composite; See appendix for technical details.
 
 

Velocity Testing
Frequency (MHz)

Element Diameter
inch mm Case Focus C
5 0.25 6.4 I2 None 00-011403
0.375 9.5 I2 None 00-011404
0.5 12.7 I2 None 00-010437

 
 

Case Dimensions

I2

Element Diameter A B C D E
inch mm
0.25 6.4 0.63 in. 16 mm 1.4 in 35.6 mm 0.73 in. 18.5 mm 1.55 in. 39.4 mm 5/8 – 24 UNEF
0.375 9.5 0.63 in. 16 mm 1.4 in 35.6 mm 0.73 in. 18.5 mm 1.55 in. 39.4 mm 5/8 – 24 UNEF
0.5 12.7 0.63 in. 16 mm 1.4 in 35.6 mm 0.73 in. 18.5 mm 1.55 in. 39.4 mm 5/8 – 24 UNEF

 

 
I3

Element Diameter A B C
inch mm
0.75 19 1.0 in. 25.4 mm 1.3 in. 33 mm 5/8 – 24 UNEF

 

 
I4

Element Diameter A B C
inch mm
0.75 19 1.35 in. 34.3 mm 1.25 in. 31.8 mm 5/8 – 24 UNEF

 

Focal Length / Type

To specify the Focal Length (in inches) and Focal Type (spherical or cylindrical) you desire: Edit the X.XS and Y.YC suffixes shown in the chart to match your requirements. (ex. The suffix for a 2.0″ spherical focus is changed from X.XS to 2.0S; the suffix for a 3.0″ cylindrical focus is changed from Y.YC to 3.0C)
 
NF = Non-focused (flat); S = Spherical focus; C = Cylindrical focus

Frequency (MHz) Element Ø (Inches)
1 0.75 0.5 0.375 0.25
1 Near 4.3 2.4 1.1
Min 2 1.5 0.75 (2)
Max 2.75 1.75 0.75 (2)
2.25 Near 9.6 5.4 2.4 1.4 0.6
Min 2 1.5 1 0.75 0.375 (2, 3)
Max 6 3.5 1.5 1 0.375 (2, 3)
3.5 Near 15 8.4 3.7 2.1 0.9
Min 2 1.5 1 0.75 0.375 (3)
Max 8 5.5 2.25 1.25 0.5
5 Near 21 12 5.4 3 1.3
Min 2 1.5 1 0.75 0.5
Max 8.0 (1) 7.5 3.5 2 0.75
10 Near 24 10.7 6 2.7
Min 1.5 1 0.75 0.5
Max 8.0 (1) 6 4 1.5
15 Near 16 9 4
Min 1 0.75 0.5
Max 6.0 (1) 5 2

Near = Nearfield length in water; Min = Minimum recommended focal length in water; Max = Maximum recommended focal length in water
 
All focal lengths are listed in inches of water from the reflection off a flat stainless steel reflector. Divide by 4 for the approximate distance in steel.
 
Focal lengths are offered in 0.35″ increments between the Min. and Max listed. Focal lengths outside the recommended limits can be ordered, but on a best effort bases only.
 
1 – Achievable focal lengths of these models are shorter compared to their near field length due to attenuation and other effects at long water paths. Longer focal lengths can be ordered, but on a best effort basis.
2 – Max and Min. focal lengths are the same for these models due to the physics and geometry of this combination.
3- A focal length other than the normal 0.25″ increment is offered in this combination.
 
Please confirm your focal length in your applications: Use of probes with F-Numbers under 4.0 (near the minimum focal length listed on this chart) can introduce other wave modes and/or be less effective since acoustic energy at the edge of the beam may be at relatively high incident angles. F-Number = Focal Length/Element Diameter. (ex. 2.0″ focus probe with 0.375″ element = 2.0″/0.375″ = F-Number = 5.3)

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Ultrasonic Transducers Catalogue

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