TYPES OF CONTACT PROBES

CSA

Single

40l x 40w x 34h
43 x 48h

Built-in water coupling. Enhanced flaw resolution.
Wear shoes available.

LSN
L2SN

Single
Single

N - C
N - C

High-sensitivity flaw detection.
Enhanced sensitivity.
Fitted wedges for oblique-angled longitudinal bearns.

MODA
M1DA
M2DA

Dual
Dual
Dual

O - C
O - C
O - C

37 x 38h
43 x 41h
53 x 45h

Long focal length for penetrating large-grain materials.

PDN
P2DN

Dual
Dual

N - C
N - C

341 x 23w x 36h
721 x 23w x 36h

Paintbrush-type for sweeping large surface areas.
Excellent near-surface sensitivity.

P-WSR

Single/Dual

Surface wave

1101 x 90w x 35h

Four surface wave elements for simultaneous 360deg
inspection.

RSA

Single

O - S

Enhanced sensitivity.

R0SA

Single

O -S

Small footprint with excellent penetration power.

R00SA

Single

O -S

Very small footprint with enhanced near surface resolution

RTSA

Two single

O -S

Combines two shear wvave elements.

TDN

Dual

N - C

Excellent near-surface sensitivity.

T2DN

Dual

N - C

Good near-surface resolution combined with high sensitivity.

P1DN

Dual

N - C

PSA

Single

O – S

RDA

Dual

O – C

COLD

Two dual

O – S
N – C

34l x 11,5w x 23h

CLD

Two dual

O – S
N – C

67l x 20w x 35h

LEGEND OF PARAMETERS FOR CONTACT PROBES

Code

Description

M

Nominal frequency (MHz)

BT

Beam type: N =normal, O =oblique

A

Beam angle in steel (deg)

D

Nominal element size (mm)

F

Focal length in steel (mm)

R

Resolved flat-bottomed hole (FBH) diameter, above baseline (mm)

NS

Near-surface resolution for R (mm)

EB

Effectiv e beam width (-3dB) at near-surface for R (mm)

T

Echo width at 2 percent signal height (µsec)

C

Longitudinal wave

S

Shear wave

SR

Damping: HR = high resolution, HS = high sensitivity, GP = general purpose

ET

Built-in elevated temperature delay line

DL

Delay line in prism

dVK₁, dVK₂

Difference (dB) between the amplitude echo frorn the circular segment of the reference block K1 (r=l00mm, dVK₁), K2 (r=25mm, dVK₂ ) and echo from a plane backwall.