DMTA-10040-01EN, Rev. E, February 2018
Chapter 5120
5.1 Common NORTEC 600 Applications
This section contains example procedures for commonly used applications.
5.1.1 Detecting Surface-Breaking Cracks — General Purpose Procedure for
All NORTEC 600 Models
The steps in this procedure are based on the use of a reference standard made of
aluminum. However, very similar steps can be followed when inspecting any other
metals, including ferromagnetic materials.
Inspection materials are shown in Figure 5-1 on page 120.
Figure 5‑1 Materials—surface‑breaking cracks
The following products are used in this procedure:
• Right angle flexible metal shaft surface probe: 12.7 cm (5 in.) overall length and
5 mm (0.20 in.) drop (90° bend) at tip; operating frequency 200 kHz to 1 MHz,
triaxial Fischer/LEMO connector, bridge coil configuration; P/N: MTF902-50FX
200K-1M [U8616220]
• Cable: 1.83 m (6 ft) length, bridge coil configuration, 16-pin LEMO to
Fischer/LEMO triaxial (SPO-6472); P/N: 9122244 [U8800091]
• Surface reference standard with certification: aluminum material with EDM notch
depths of 0.203 mm (0.008 in.), 0.508 mm (0.020 in.) and 1.016 mm (0.040 in.), and
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