emerson-300510en-users-manual

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Rosemount Raptor System Configuration Manual 300510EN, Rev AA December 2010 7.10.1 Graph Area When the Tank Scan window opens, WinSetup reads tank data from the gauge. The process is indicated by a progress bar in the lower right corner of the Tank Scan window. Reread From Gauge Progress bar Once the reading process is finished, a tank scan graph is displayed that shows a peak referring to the product surface. The Tank Scan graph may also contain other peaks. In addition to the surface echo, there might be echoes from agitators or other obstacles in the tank. The Tank Scan function includes tools that allows you to configure the level gauge to distinguish between the surface peak and peaks from disturbing objects. See the following chapters for details. The Tank Scan graph can be refreshed at any time with the Reread From Gauge button. The new echo curve will appear as a black line and the previous curve as a grey line. The graph may show up to two old echo curves. An old echo peak will be marked by a small cross symbol. This can be used to compare the existing tank signal with previous signals. 7-22 Section 7. Service Functions
System Configuration Manual 300510EN, Rev AA December 2010 Rosemount Raptor 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). Tank Echo curve Previous Tank Echo curve Prev. Tank Echo (Previous Tank Echo) General Threshold See Tank Echo. 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: Section 7. Service Functions 7-23
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