Volume Configuration - Emerson Rosemount 5402 Reference Manual

Configuration
October 2018
Rapid level changes
Optimize the transmitter for measurement conditions where the level changes quickly from the filling
and emptying of the tank. As a default standard, a Rosemount 5400 is able to track level changes of up to
1.5 in./s (40 mm/s). When the Rapid Level Changes check-box is selected, the transmitter can track level
changes of up to 8 in./s (200 mm/s).
Turbulent surface
This parameter should be used if the tank has a turbulent surface. The reason for the turbulence might
be splash loading, agitators, mixers, or boiling product. Normally, the waves in a tank are quite small and
cause local rapid level changes. By setting this parameter, the performance of the transmitter will
improve when there are small and quickly changing amplitudes and levels.
Foam
Setting this parameter optimizes the gauge for conditions with weak and varying surface echo
amplitudes, such as foam. When the foam is light and airy, the actual product level is measured. For
heavy and dense foam, the transmitter measures the level of the foam's upper surface.
Product dielectric range
The dielectric constant is related to the reflectivity of the product. By setting this parameter,
measurement performance can be optimized. However, the transmitter will still be able to perform
properly, even if the actual dielectric constant differs from the configured value.
Solid product
Setting this parameter optimizes the device for solid products, for example concrete or grains. For
instance, this parameter can be used when the application is a silo with product pile-up. The transmitter
will be optimized for weak echoes and a sloping surface which is typical when measuring at solid
materials. This option shall only be used for a Rosemount 5402 with a 4" cone or parabolic antenna.
5.3.4

Volume configuration

For volume calculations, choose one of the standard tank shapes or the strapping option. Select None if
volume calculation is not used. For the standard tanks, a Volume Offset parameter can be specified
which can be used for a non-zero volume that corresponds to the zero level. This may be useful, for
example, if the user wants to include the product volume below the zero level.
Volume calculation is performed by using a predefined tank shape or a strapping table. One of the
following standard tank shapes can be chosen:
Sphere

Vertical cylinder

Horizontal cylinder

Vertical bullet

Horizontal bullet

The following parameters must be entered for a standard tank shape:
Tank diameter

Tank height (not for spherical tanks)

Volume offset

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Reference Manual
00809-0100-4026, Rev KC
Configuration