Sound Velocity In The Coating - GE DMS Go+ Operating Manual

Measurement mode TopCOAT
– Select the digits that you wish to change using the
left and right arrow keys, and change the value using
the up and down arrow keys.
– Press the function key 2 (function DONE) in order to
close the process of changing the thickness value.
– Couple the probe.
– Keep the probe coupled as long as the message Ac-
quiring, please stay coupled is visible on the dis-
play screen. When the message is no longer visible,
the calibration for the TopCOAT method is finished.
The sound velocity for the measurement mode Top-
COAT is then correctly set.
DMS Go+

Sound velocity in the coating

In addition to the sound velocity in the material, the
sound velocity in the coating must also be known for
TopCOAT measurements. The factory-set default value
for this is 2375 m/s. This value should usually produce
satisfying results.
A T T E N T I O N
As the sound velocity in the coating has an
effect on the determination of coating thick-
ness and consequently also on the calcula-
tion of wall thickness, the accuracy of the
displayed thickness reading depends on the
coating velocity stored in the instrument.
Edition 4 (05/2014)
7 Special functions of the DMS Go+ TC
7-13