TDOCT-
3147_E
NG
259858
08/
2013
Pressure Transmitter LHCR-51, LHCS-51
Commissioning
26
5.4
Commissioning of level measurement
5.4.1
Information on level measurement
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.
•
The values entered for "Empty calib./Full calib.", "Empty pressure/Full pressure",
"Empty height/Full height" and "Set LRV/Set URV" must be at least 1 % apart. The
value will be rejected, and a message output, if the values are too close together.
5.4.2
Overview of level measurement
Measuring task
Level
selection
Measured variable
options
Description
Measured value
display
Calibration takes
place by entering two
pressure/level value
pairs.
"In
pressure"
Via the "Output unit"
parameter: %, level,
volume or mass units.
Calibration with reference
pressure (wet calibration),
see
→
27
Calibration without reference
pressure
(dry calibration)
see
→
29
The measured value
display and the
"Level before lin"
parameter display the
measured value.
Calibration takes
place by entering the
density and two
height/level value
pairs.
"In height"
Calibration with reference
pressure (wet calibration),
see
→
33
Calibration without reference
pressure
(dry calibration)
see
→
31
NOTICE
DOCT3147_eng.book Seite 26 Freitag, 16. August 2013 4:58 16
