DMTA-10084-01EN, Rev. 2, November 2018
Software Features and Options
201
Figure 11-40 Correctly triggered measurement
11.7.3.3 Echo-to-Echo Measurements
The corrosion module echo-to-echo mode measures the distance between an echo in
Gate 2 and an echo in Gate 1. Echo-to-echo measurements are most commonly used to
determine the thickness of coated materials, since the first back wall measurement
includes the thickness of the coating. Measuring the distance between the second
successive back wall and the first back wall provides a more accurate measurement of
the base material, so you can ignore the coating layer.
To make an echo-to-echo measurement
1. In the corrosion module ( ) Corrosion dialog box, set Gate2 to On (see
Figure 11-41 on page 202).
Measurement reading 5 displays the measurement from Gate 2 to Gate 1 (2-1).
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