Emerson Rosemount 5900S Series, Reference Manual

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Hold Off distance
The Hold Off distance defines how close to the Gauge Reference Point a level value is
accepted. Normally the Hold Off distance does not need to be changed. However, if there
are disturbing echoes in the upper part of the tank, for example from the tank nozzle, you
can increase the Hold Off distance in order to avoid measurements in the region close to
the antenna.
Calibration distance
Use this variable to calibrate the Rosemount 5900S so that measured product levels match
hand dipped levels. A minor adjustment may be necessary when the gauge is installed if,
for example, there is a deviation between the actual tank height and the height given by
tank drawings.
See Calibration using WinSetup for more information.
Pipe diameter
When a Rosemount 5900S Radar Level Gauge is installed in a still-pipe, the inner diameter
of the pipe must be specified. The Pipe Diameter is used to compensate for the lower
microwave propagation speed inside the pipe. An incorrect value results in a scale factor
error. If locally supplied still pipes are used, make sure the inner diameter is noted before
the pipe is installed.
4.4.2 Tank Scan
The Tank Scan window is a useful tool for analyzing the measurement signal. It allows you
to view tank echoes and setup the most important parameters to enable the gauge to
distinguish between the surface echo and disturbing echoes and noise.
To open the Tank Scan window:
Procedure
1. Start the TankMaster WinSetup program.
2. In the
TankMaster WinSetup workspace, click the right mouse button on the icon
that represents the Rosemount 5900S Radar Level Gauge.
3. From the popup menu choose the Properties option.
The RLG Properties window appears.
4. In the RLG Properties window, select the Advanced Configuration tab.
5. Click the
Tank Scan
button to open the Tank Scan window:
Reference Manual Configuration
00809-0100-5900 September 2019
Rosemount 5900S Radar Level Gauge 105