Rosemount 5600 Series, Справочное руководство

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Reference Manual
00809-0100-4024, Rev BA
September 2005
4-9
Rosemount 5600 Series
PROCESS CONDITIONS
Describe the conditions in your tank according to the Process Conditions
listed below. For best performance choose only if applicable and not more
than two options.
TEMPERATURE
MEASUREMENT
Up to six temperature sensors can be connected to the 2210 Display Unit.
You can use 1-3 spot elements or 1-6 multiple spot elements. All temperature
sensors must be of the same type, for example, the Pt100 or CU90. See
“Temperature Measurement” on page 3-14 for information on how to connect
the temperature sensors.
Use one of the following temperature measurement conversion methods:
• PT100
• CU90
• User Defined Linearization Table. The sensor characteristics are
specified in a table of corresponding resistance and temperature
values.
• User Defined Formula. The sensor characteristics are specified in a
mathematical formula: R=R
0
*(1+A*T+B*T
2
) where R is the resistance
at temperature T, R
0
is the resistance at zero degrees Centigrade and
A and B are constants.
Rapid level changes Optimize the transmitter for measurement conditions where the
level changes quickly due to filling and emptying of the tank. A
standard configured transmitter is able to track level changes of
up to 4 inch/s (100 mm/s). When the Rapid Level Changes
check box is marked, the transmitter can track level changes of
up to 8 inch/s (200 mm/s).
Turbulent Surface This parameter should be used if the tank shows 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 be
improved when there are small and quickly changing
amplitudes and levels.
Foam Setting this parameter optimizes the transmitter for conditions
with weak and varying surface echo amplitudes, which are
typical for foam.
Solid Products Setting this parameter optimizes the transmitter for solid
products, for example concrete or grains, which are not
transparent for radar signals. For instance, this parameter can
be used when the application is a silo with product buildup.
Sensor Mounting Level 1-6 Enter the level (from the tank bottom) at which each sensor is
mounted. The first sensor should be mounted in the lowest
position in the tank, the second above the first and so on.
Number of Sensors Enter the number of temperature sensors connected to the
Display Unit. You can have up to six sensors connected. If you
choose zero sensors temperature measurement is disabled.