System Configuration Manual 300510EN, Rev AA
December 2010
7-23
Rosemount Raptor
Section 7. Service Functions
7.10.2 Legend/Options The following items can be shown in the graph area (check the appropriate
box for each item to be shown):
Tank Echo The black line shows the latest Tank Echo
curve, and the grey lines show previous Tank
Echo curves (maximum two).
Prev. Tank Echo
(Previous Tank Echo)
See Tank Echo.
General Threshold The General Amplitude Threshold is shown
in blue. Echoes with an amplitude below the
General Amplitude Threshold will be
filtered out by the level gauge.
False Echo Areas The False Echo function is used to improve the
performance of the gauge when the surface is
close to a horizontal surface of a stationary
object in the tank. The object causes an echo
when it is above the surface. Added False
Echo Areas are shown in grey:
Previous Tank
Echo curve
Tank Echo
curve