Commissioning with the FF configuration program Cerabar M, Deltabar M, Deltapilot M
146 Endress+Hauser
9.7 Level measurement
In this chapter the parameter text as well as the parameter name are indicated.
In FF configuration programs only the parameter text is displayed (exception: in the NI-
FBUS configurator you can select if the parameter text or the parameter name is displayed).
Example:
9.7.1 Information on level measurement
Note Dependencies when setting parameters!
‣ You have a choice of two methods for calculating the level: "In pressure" and "In height".
The table in the "Overview of level measurement" section that follows provides you with
an overview of these two measuring tasks.
‣ The limit values are not checked, i.e. the values entered must be appropriate for the
sensor and the measuring task for the device to be able to measure correctly.
‣ Customer-specific units are not possible.
‣ There is no unit conversion.
‣ The values entered for "Empty calib. (028)/Full calib. (031)", "Empty pressure (029)/Full
pressure (032)", "Empty height (030)/Full height (033)" must be at least 1 % apart. The
value will be rejected, and a warning message displayed, if the values are too close
together.
9.7.2 Overview of level measurement
Parameter text Parameter name
Linearization LINEARIZATION
Measuring task Level selection Measured
variable options
Description Measured value display
Calibration is performed by
entering two pressure-level
value pairs.
"In pressure" Via the "Unit before lin.
(025)" parameter: %,
level, volume or mass
units.
– Calibration with reference
pressure (wet calibration), see
ä 75
– Calibration without reference
pressure (dry calibration), see
ä 77
The measured value display and
the
"Level before lin. (019)"
parameter display the measured
value.
Calibration is performed by
entering the density and two
height-level value pairs.
"In height" – Calibration with reference
pressure (wet calibration), see
ä 81
– Calibration without reference
pressure (dry calibration), see
ä 79
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