Thru-coat, Technology, Temperature compensation – Atec Panametrics-38DL-Plus User Manual
Page 4: Optional oxide/ scale measurement
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Thru-Coat
®
Technology
uses a single back-wall
echo to measure true
metal thickness. You
can display the metal
and coating thicknesses,
each adjusted for their
correct material sound
velocities. There is no
need to remove paint
and coatings from
surfaces. THRU-COAT
®
measurements use the D7906-SM,
D7906-RM, and D7908 dual element
transducers.
Temperature
Compensation
variations in mate-
rial temperature affect
sound velocity and
accuracy of thickness
measurements. The
temperature compensa-
tion feature allows you
to manually enter the
calibration block’s tem-
perature and the current
(high) temperature at
the measurement points. The 38DL PLUS
automatically displays the temperature-
corrected thickness.
Optional Oxide/
Scale Measurement
uses advanced algo-
rithms to measure the
thickness of oxide/
scale buildups inside
boiler tubes. The gage
simultaneously displays
the metal thickness of
the boiler tube and the
thickness of the oxide
layer. Knowing the
thickness of the oxide/
scale helps predict tube life. We recom-
mend using M2017 or M2091 transducers
in this application.
One of the major applications of the 38DL PLUS is measuring the remaining thickness of
pipes, tubes, tanks, pressure vessels, hulls, and other structures affected by corrosion or
erosion. Dual element transducers are most commonly used for these applications.
Thickness Measurements on Internally Corroded Metals
•
Automatic Probe Recognition for
standard D79X series dual element
transducers
•
Ten custom dual element transducer
setups
•
Optimized default gain during
calibration for dual element transducer
•
V-Path Builder for custom V-path
compensation
•
Calibration Doubling when echo
doubling may occur during calibration
•
THRU-COAT
®
and Echo-to-Echo
measurements on painted and coated
surfaces
•
High temperature measurements; up to
500 °C (932 °F)
•
Boiler tube and Internal Oxide
measurements (optional) with M2017
or M2091 single element transducers
•
EMAT transducer (E110-SB) for
no-couplant measurements of boiler
tubes with external oxide/scale buildup