Olympus nortec 600 - Evaluating Metal Thickness and Using Thickness Curve Theory - All NORTEC 600 Models; Figure 5-90 Using the Vertical Signal Deflection to Evaluate Unknown Thicknesses

DMTA-10040-01EN, Rev. E, February 2018
Using the Instrument 185
11. Press and hold the REF SAVE key ( ), and then press the ERASE key ( ) to
clear the live signals (see Figure 5-90 on page 185).
You can now evaluate unknown paint thicknesses using the vertical signal
deflection, which represents the lift-off.
Alternatively, depending on your preferences, you can use the alarm to create a
simple accept/reject test.
Figure 5‑90 Using the vertical signal deflection to evaluate unknown thicknesses
5.2.4 Evaluating Metal Thickness and Using Thickness Curve Theory — All
NORTEC 600 Models
This section outlines the typical thickness curve that is associated with phase lag and
skin-depth eddy current theory.
To evaluate the metal thickness and use thickness curve theory
1. Connect the probe and the cable into the PROBE connector on the NORTEC 600.
2. Press the ADV SETUP menu key ( ) once, and then select APPL SELECT
(A key) to open the application selection menu. Select Surface Cracks with the
knob, then press to accept (see Figure 5-91 on page 186).