Immersion Transducers

Thickness and Flaw Inspection Solutions

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An immersion transducer is a single element longitudinal wave transducer with a 1/4 wavelength layer acoustically matched to water. Immersion transducers are specifically designed to transmit ultrasound in applications where the test parts are partially or wholly immersed in water, which allows a uniform and fast coupling technique for rapid scanning of parts. Focusing lens can be added to increase transducer sensitivity and performance in a particular area of a part. Immersion transducers can be focused either spherically or cylindrically upon request within the allowable focal range for a given frequency and element size.

Overview

Advantages:

  • The immersion technique provides a means of uniform coupling
  • Quarter wavelength matching layer increases sound energy output
  • Corrosion resistant 303 stainless steel case with chrome-plated brass connectors
  • Proprietary RF shielding for improved signal-to-noise characteristics in critical applications
  • All immersion transducers, except paintbrush, can be focused spherically (spot) or cylindrically (line) (see Technical Notes page 45)
  • Customer specified focal length concentrates the sound beam to increase sensitivity to small reflectors

Applications:

  • Automated scanning
  • On-line thickness gaging
  • High speed flaw detection in pipe, bar, tube, plate, and other similar components
  • Time-of-flight and amplitude based imaging
  • Through transmission testing
  • Material analysis and velocity measurements

Usage Note: Transducers should not be submerged for periods exceeding 8 hours. Allow 16 hours of dry time to ensure the life of the unit.

Large Diameter

Large Diameter Case

  • Large element diameters increase near field length allowing for longer focal lengths
  • Larger diameters can increase scanning index
  • Low frequency, large element diameter designs available for challenging applications

Transducer Dimensions (in inches)

Nominal Element Size (A) (B) (C)
1.50 1.75 1.81 1.50
1.125 1.38 1.44 1.25
1.00 1.25 1.31 1.25
0.75 1.00 1.06 1.25

I-4, 1-7 and i-8 Style Housings

Various element and case sizes with straight UHF connectors and 303 stainless steel case housings are available.

Transducer Dimensions

Element Diameter (inches) A B
0.75 1.00 1.375
0.50, 0.625 0.748 1.375
1.00, 1.125 1.25 1.375
Frequency
(MHz)
Nominal Element Size ACCUSCAN-S CENTRASCAN Power Series Resolution Series VIDEOSCAN
in. mm Part /
Item No.
Part /
Item No.
Part /
Item No.
Part /
Item No.
Part /
Item No.
0.5 0.75 19

I7-0012-P-SU

\

U8517150

V318-SU\

U8423038
0.5 1 25

A301S-SU

\

U8421001

V301-SU

\

U8423001
0.5 1.125 29

A391S-SU

\

U8421056

V391-SU

\

U8423073
0.5 1.5 39

A389S-SU

\

U8421055

V389-SU

\

U8423071
1 0.75 19

A314S-SU

\

U8421029

V314-SU

\

U8423029
1 1 25

C302-SU\

U8422001

V302-SU

\

U8423003
1 1.125 29

A394S-SU

\

U8421058

V394-SU

\

U8423075
1 1.5 39

A392S-SU

\

U8421057

V392-SU

\

U8423074
2.25 0.75 19

A305S-SU

\

U8421007

C305-SU

\

U8422003

I7-0212-R-SU

\

U8517156

V305-SU

\

U8423007
2.25 1 25

A304S-SU

\

U8421006

C304-SU

\

U8422002

V304-SU

\

U8423006
2.25 1.5 39

A395S-SU

\

U8421059

V395-SU

\

U8423076
3.5 0.75 19

A381S-SU

\

U8421051

C381-SU

\

U8422018

V381-SU

\

U8423063
3.5 1 25

A380S-SU

\

U8421050

C380-SU

\

U8422017

V380-SU

\

U8423061
5 0.75 19

A308S-SU

\

U8421011

C308-SU

\

U8422007

I7-0512-R-SU

\

U8517165

V308-SU

\

U8423012
5 1 25

A307S-SU

\

U8421010

V307-SU

\

U8423010
7.5 0.75 19

V321-SU

\

U8423043
10 0.75 19

V315-SU

\

U8423030
10 1 25

V322-SU

\

U8423044

Standard Case

Standard Case

  • Knurled case with Straight UHF connect or (SU)
  • Contact us for nonknurled case design and availability of other connector styles
  • Frequencies ranging from 1.0 to 25 Mhz

i-3 Style Housing

0.25 inches (6 mm), 0.375 inches (10 mm) and 0.50 inches (13 mm) element diameters in 0.63 inches (16 mm) housings with straight UHF connectors and 303 stainless steel case housings. If a focus is required, select a focal length between min. and max.

Frequency
(MHz)
Nominal Element Size ACCUSCAN-S CENTRASCAN Resolution Series VIDEOSCAN
in. mm Part /
Item No.
Part /
Item No.
Part /
Item No.
Part /
Item No.
1 0.5 13

A303S-SU\U8421005

V303-SU

\

U8423005

2.25 0.25 6

C323-SU

\

U8422014

V323-SU

\

U8423048

2.25 0.375 10

C325-SU

\

U8422015

V325-SU

\

U8423053

2.25 0.5 13

A306S-SU

\

U8421009

C306-SU

\

U8422004

V306-SU

\

U8423009

3.5 0.25 6

C384-SU

\

U8422021

V384-SU

\

U8423070

3.5 0.375 10

C383-SU

\

U8422020

V383-SU

\

U8423066

3.5 0.5 13

A382S-SU

\

U8421053

C382-SU

\

U8422019

I3-0308-R-SU

\

U8517233

V382-SU

\

U8423065

5 0.25 6

A310S-SU

\

U8421018

C310-SU

\

U8422012

V310-SU

\

U8423017

5 0.375 10

A326S-SU

\

U8421038

C326-SU

\

U8422016

V326-SU

\

U8423054

5 0.5 13

A309S-SU

\

U8421013

C309-SU

\

U8422008

V309-SU

\

U8423013

7.5 0.5 13

A320S-SU

\

U8421035

V320-SU

\

U8423042

10 0.25 6

A312S-SU

\

U8421024

V312-SU

\

U8423024

10 0.375 10

A327S-SU

\

U8421039

V327-SU

\

U8423055

10 0.5 13

A311S-SU

\

U8421020

I3-1008-R-SU

\

U8517073

V311-SU

\

U8423019

15 0.25 6

A313S-SU

\

U8421028

V313-SU

\

U8423028

15 0.375 10

V328-SU

\

U8423056

15 0.5 13

A319S-SU

\

U8421032

V319-SU

\

U8423040

20 0.125 3

V316-SU

\

U8423034

20 0.25 6

V317-SU

\

U8423037

25 0.25 6

V324-SU

\

U8423052

Slim Line Case

Slim Line Case

  • Stainless steel case is only 0.38" (10 mm) in diameter, ideal for limited access areas
  • Standard configuration is Straight and fits Microdot ® connector style

i-1 and i-2 Style Housings

0.25 inches (6 mm) diameter elements with 0.375 inches (10 mm) housings for difficult to reach fillet or bore areas are available with straight Microdot (I-1) or straight UHF (I-2) connectors and 303 stainless steel housings.

Frequency
(MHz)
Nominal Element Size ACCUSCAN-S VIDEOSCAN
in. mm Part /
Item No.
Part /
Item No.
2.25 0.25 6

V323-SM

\

U8423047

3.5 0.25 6

V384-SM

\

U8423069

5 0.25 6

A310S-SM

\

U8421017

V310-SM

\

U8423016

10 0.25 6

A312S-SM

\

U8421023

V312-SM

\

U8423023

15 0.25 6

A313S-SM

\

U8421027

V313-SM

\

U8423027

20 0.125 3

V316-SM

\

U8423033

20 0.25 6

V317-SM

\

U8423036

25 0.25 6

V324-SM

\

U8423051

Pencil Case

Pencil Case

  • Small diameter, 2" (51 mm) long barrel improves access to difficult-to-reach areas
  • Standard connector style is Straight UHF (SU)
Frequency
(MHz)
Nominal Element Size ACCUSCAN-S VIDEOSCAN
in. mm Part /
Item No.
Part /
Item No.
2.25 0.25 6

V323-N-SU

\

U8423045

3.5 0.25 6

V384-N-SU

\

U8423067

5 0.25 6

A310S-N-SU

\

U8421014

V310-N-SU

\

U8423014

10 0.25 6

A312S-N-SU

\

U8421021

V312-N-SU

\

U8423021

15 0.25 6

A313S-N-SU

\

U8421025

V313-N-SU

\

U8423025

20 0.125 3

V316-N-SU

\

U8423032

20 0.25 6

V317-N-SU

\

U8423035

25 0.25 6

V324-N-SU

\

U8423049

Immersion Transducers