March 2006 910-257C
MG2 Series Page 3-9
3.6.1 THRU-COAT
®
(Metal Only) Calibration
(MG2-XT and MG2-DL Only)
Perform this calibration to calibrate for the sound velocity and zero
offset of the metal thickness. This calibration should be used when the
user wishes to measure the true metal thickness of material that is
coated or painted but on which the exact thickness of the coating is not
important. Performing this calibration will use a default velocity for
the coating.
To perform a THRU-COAT (Metal Only) calibration, follow these
steps:
Step 1:Couple the transducer to a thick calibration block. Press [CAL
VEL] while in the THRU-COAT Measurement mode.
Step 2:Press [ENTER] when the reading is stable.
Step 3:Uncouple the transducer from the material and enter the
thickness of the block using the [
, , , and ] slewing
keys.
Step 4:Couple the transducer to a thin calibration block. Press [CAL
ZERO].
Step 5:Press [ENTER] when the reading is stable.
Step 6:Uncouple the transducer from the material and enter the
thickness of the block using the [
, , , and ] slewing
keys.
Step 7:Press [MEAS] to complete the calibration.
3.6.2.THRU-COAT (Metal and Coating) Cali-
bration
This calibration will calibrate for the velocity and zero offset of the
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