March 2006 910-257C
MG2 Series Page 3-11
slewing keys.
Step 9: Press [MEAS] to complete the calibration.
Note: The THRU-COAT feature can measure only coatings of
0.005” (0.12mm) or greater. If you are measuring coated
steel and a value for the coating is not displayed, the
coating thickness is below the minimum thickness read-
ing capability of the THRU-COAT feature or cannot be
otherwise resolved by the feature. In these cases, the
thickness of the coating will be added to the thickness of
the steel, causing an error. You may attempt the mea-
surement using the Echo-to-Echo feature, or it may be
necessary to remove the coating.
3.7 Echo-to-Echo Calibration
The Echo-to-Echo measurement feature allows the MG2-XT and
MG2-DL to measure remaining wall thickness of painted metal while
ignoring the coating thickness. Echo-to-Echo mode refers to
measuring from one backwall echo to the next backwall echo. The
time interval between these echoes does not include the time through
any paint, resin, or organic coating that is present.
The Echo-to-Echo mode of the MG2-XT and MG2-DL can make
thickness measurements in the range between 0.100” (2.5mm) and
0.500” (12.5mm). If you need to make thickness measurements on
coated metal outside of this thickness range, the THRU-COAT feature
is recommended.
To activate the Echo-to-Echo mode:
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