Flaw Detectors

TOFD

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TOFD Transducers & Wedges

TOFD transducers and wedges generate refracted longitudinal waves in steel for use in applications involving crack sizing by means of the Time of Flight Diffraction technique.

Overview
Miniature Screw-in Transducers
Miniature Screw-in Wedges

Miniature TOFD Screw-in Wedges

ST1 Wedge Type	ST2 Wedge Type	Refracted Longitudinal Angle	Wedge Options
		(°)
ST1-45L	ST2-45L	45	Standard
ST1-45L-IHC	ST2-45L-IHC	45	Irrigated*
ST1-60L	ST2-60L	60	Standard
ST1-60L-IHC	ST2-60L-IHC	60	Irrigated*
ST1-70L	ST2-70L	70	Standard
ST1-70L-IHC	ST2-70L-IHC	70	Irrigated*

Miniature Screw-in TOFD Transducers

Transducer Dimensions (in inches)
Case Type	(A)	(B)	(C)	Thread Pitch
ST1	0.44	0.55	0.22	3/8 - 32
ST2	0.71	0.685	0.257	11/16 - 24

Transducer Configurator

Frequency
(MHz)

Nominal Element Size

CENTRASCAN

VIDEOSCAN

in.

Part /
Item No.

2.25

0.25

C542-SM

2.25

0.375

C566-SM

2.25

0.5

C540-SM

0.125

C567-SM

0.25

C543-SM

0.375

C568-SM

0.5

C541-SM

0.125

C563-SM

0.25

C544-SM

0.125

V564-SM

Advantages

Our time-of-flight diffraction transducers are highly damped longitudinal wave probes that offer excellent resolution in challenging TOFD applications. These highly sensitive composite element broadband transducers are available in frequencies from 2.25 MHz to 15 MHz and in sizes from 3 mm (0.25") to 12 mm (0.50"). They are for use with specialized TOFD wedges designed to produce refracted longitudinal waves in steel.

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