Cerabar S/Deltabar S/Deltapilot S FOUNDATION Fieldbus Parameter description (Local operation and FieldCare)
Endress+Hauser 135
LEVEL SELECTION (020)
Selection
Select the level mode.
Prerequisite:
• MEASURING MODE = Level
!
Note!
• In the "Level easy pressure" and "Level easy height" level modes, the values entered are
not tested as extensively as in the "Level standard" level mode. The values entered for
EMPTY CALIB./FULL CALIB., EMPTY PRESSURE/FULL PRESSURE and EMPTY
HEIGHT/FULL HEIGHT must be at least 1% apart for the "Level easy pressure" and
"Level easy height" level modes. The value will be rejected with a warning message if
the values are too close together. Further limit values are not checked; i.e. the values
entered must be appropriate for the sensor and the measuring task so that the
measuring device can measure correctly.
→ For an overview of the different level modes and types, → ä 105, Section 9.1
"Overview of level measurement".
• The "Level easy pressure" and "Level easy height" level modes comprise fewer
parameters than the "Level standard" mode and are used to quickly and easily
configure a level application.
• Customer-specific units of level, volume and mass or a linearization table may only be
entered in the "Level standard" level mode.
Options:
• Level easy pressure
Specify two pressure-level value pairs for this level mode. The pressure measured value
is converted directly to the unit which is selected via the OUTPUT UNIT (023)
parameter (→ ä 148). The two calibration modes, "Wet" and "Dry", are available.
– Wet calibration takes place by filling and emptying the container. In the case of two
different levels, the level, volume, mass or percentage value entered is assigned to
the pressure measured at this point in time.
– Dry calibration is a theoretical calibration. For this calibration, you specify two
pressure-level value pairs via the EMPTY CALIB., EMPTY PRESSURE, FULL CALIB.
and FULL PRESSURE parameters. → Parameter descriptions → ä 149 ff.
• Level easy height
For this level mode, specify a height unit, density and two height-level value pairs. The
pressure measured value is converted to a height value using the density entered and
the height unit. The two calibration modes, "Wet" and "Dry", are available.
– Wet calibration takes place by filling and emptying the container. In the case of two
different levels, the level, volume, mass or percentage value entered is assigned to
the converted height value.
– Dry calibration is a theoretical calibration. For this calibration, you specify two
height-level value pairs via the EMPTY CALIB., EMPTY HEIGHT, FULL CALIB. and
FULL HEIGHT parameters. → Parameter descriptions → ä 153 ff.
• Level standard
Once you have selected this level mode, you can use the LEVEL MODE (718)
parameter (→ ä 156) to choose between "Linear", "Pressure linearized" and "Height
linearized".
Factory setting:
Level easy pressure
→ For LEVEL SELECTION = "Level easy pressure" → ä 146, Table 8: OPERATING MENU → SETTINGS → BASIC
SETUP "Level", LEVEL SELECTION "Level easy pressure".
→ For LEVEL SELECTION = "Level easy height" → ä 150, Table 9: OPERATING MENU → SETTINGS → BASIC
SETUP "Level", LEVEL SELECTION "Level easy height".
→ For LEVEL SELECTION = "Level standard" → ä 155, Table 10: OPERATING MENU
→ SETTINGS → BASIC
SETUP "Level", LEVEL SELECTION "Level standard".
Table 2: GROUP SELECTION → MEASURING MODE
Parameter name Description
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