Endress+Hauser Deltabar S FMD77, Руководство по эксплуатации

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Commissioning Deltabar S FMD77, FMD78, PMD75 with FOUNDATION Fieldbus
74 Hauser
7.7.3 Overview of level measurement
Measuring task LEVEL
SELECTION/
LEVEL MODE
Measured variable
options
Description Comment Measured value display
The measured variable is in
direct proportion to the
measured pressure.
Calibration is performed by
entering two pressure-level
value pairs.
LEVEL
SELECTION:
Level Easy
Pressure
Via OUTPUT UNIT
parameter: %, level,
volume or mass
units.
– Calibration with reference
pressure - wet calibration,
see Operating Instructions
BA00303P.
– Calibration without
reference pressure - dry
calibration, see Operating
Instructions BA00303P.
– Incorrect entries
are possible
– Customized units
are not possible
The measured value
display and the
LEVEL BEFORE LIN.
parameter show the
measured value.
The measured variable is in
direct proportion to the
measured pressure.
Calibration is performed by
entering the density and
two height-level value
pairs.
LEVEL
SELECTION:
Level Easy
Height
Via OUTPUT UNIT
parameter: %, level,
volume or mass
units.
– Calibration with reference
pressure - wet calibration,
see Operating Instructions
BA00303P.
– Calibration without
reference pressure - dry
calibration, see Operating
Instructions BA00303P.
– Incorrect entries
are possible
– Customized units
are not possible
The measured value
display and the
LEVEL BEFORE LIN.
parameter show the
measured value.
The measured variable is in
direct proportion to the
measured pressure. LEVEL
SELECTION:
Level standard/
LEVEL MODE :
Linear
Via LIN.
MEASURAND
parameter:
– % (Level)
– Level
– Volume
– Mass
– Calibration with reference
pressure - wet calibration,
see Operating Instructions
BA00303P.
– Calibration without
reference pressure - dry
calibration, see Operating
Instructions BA00303P.
– Incorrect entries
are rejected by
the device
– Customized level,
volume and mass
units are possible
The measured value
display and the
LEVEL BEFORE LIN.
parameter show the
measured value.
The measured variable is
not in direct proportion to
the measured pressure as,
for example, with
containers with a conical
outlet. A linearization table
must be entered for the
calibration.
LEVEL
SELECTION:
Level standard/
LEVEL MODE:
Pressure
Linearized
Via LIN.
MEASURAND:
– Pr %
– Pr
Volume
– Pr Mass
– Calibration with reference
pressure: semiautomatic
entry of linearization table,
see Operating Instructions
BA00303P.
– Calibration without
reference pressure: manual
entry of linearization table,
see Operating Instructions
BA00303P.
– Incorrect entries
are rejected by
the device
– Customized level,
volume and mass
units are possible
The measured value
display and the TANK
CONTENT parameter
show the measured
value.
– Two measured variables
are required or
– The container shape is
given by value pairs, such
as height and volume.
The 1st measured variable
%-height or height must be
in direct proportion to the
measured pressure. The
2nd measured variable
volume, mass or % must
not be in direct proportion
to the measured pressure.
A linearization table must
be entered for the 2nd
measured variable. The 2nd
measured variable is
assigned to the 1st
measured variable by
means of this table.
LEVEL
SELECTION:
Level standard/
LEVEL MODE:
Height
Linearized
Via COMB.
MEASURAND
parameter:
– Volume
– Height + Mass
– Height + %
– %-Height +
Volume
– %-Height + Mass
– %-Height + %
– Calibration with reference
pressure: wet calibration
and semiautomatic entry of
linearization table, see
Operating Instructions
BA00303P.
– Calibration without
reference pressure: dry
calibration and manual
entry of linearization table,
see Operating Instructions
BA00303P.
– Incorrect entries
are rejected by
the device
– Customized level,
volume and mass
units are possible
The measured value
display and the TANK
CONTENT parameter
show the 2nd
measurand value
(volume, mass or %).
The LEVEL BEFORE LIN
parameter displays the
1st measured value
(%-height or height).