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System Configuration Manual
300510EN, Rev AA
December 2010
5-123
Rosemount Raptor
Section 5. Installing a Raptor Level Gauging System
5.13.2 Using the
Calibrate
Function
The Calibrate function is a tool which allows you to calculate the Correction
Factor for still-pipe measurements and the Calibration Distance. It optimizes
measurement performance from the top to the bottom of the tank by
automatically minimizing the offset between actual product levels and level
values measured by the gauge.
To calibrate a Rosemount 5900S Rada Level Gauge
1. Select the 5900S level gauge icon in the Workspace window, click the
right mouse button and choose Calibrate, or choose Calibrate from the
Service/Devices menu:
2. Click the Calibration Data button to open the Calibration Data window.
Enter hand dipped level values and the corresponding levels measured
by the gauge. Click the Save Calibration Data in PC Database button.
The Calibration window displays a straight line fitted through
measurement points representing the difference between hand dipped
level values and values measured by the level gauge. For still-pipe
antennas a sloping line is displayed, otherwise the line is horizontal.
3. Click the Write new calibration data to RTG button in order to save the
current calibration data. By clicking the Write new calibration data to
RTG button, a new Calibration Distance is calculated and the 5900S
level values in the Calibration Data window are recalculated.
See the Rosemount 5900S Reference Manual (Document No.
300520EN) for further information on using the Calibrate function for a
Rosemount 5900S Radar Level Gauge.