Endress+Hauser cerabar S - Pressure Linearized Level Type

Level measurement (FF configuration program) Cerabar S/Deltabar S
10 Endress+Hauser
4. 3 "Pressure linearized" level type
4.3.1 Semiautomatic entry of the linearisation table
Example:
In this example, the volume in a tank with a conical outlet should be measured in m
3
.
Prerequisite:
• The tank can be filled. The linearisation characteristic must rise continuously.
!
Note!
• See also Operating Instructions BA301P Deltabar S or Operating Instructions BA302P Cerabar S,
Section 6.6 "Level measurement".
• For a description of the parameters mentioned, see
– Page 33, Pressure Transducer Block.
– Page 65, Analog Input Block.
Description
1 Deltabar S: before configuring the device for your
application, the pressure piping must be cleaned and the
device filled with fluid. See Operating Instructions
BA301P, Section 6.6.1.
P01-PMP75xxx-19-xx-xx-xx-002
2 Open the Pressure Transducer Block and set the block
mode to OOS.
3 You have the following ways of carrying out position
adjustment:
• By means of the "Pos. zero adjust" method, see
Operating Instructions BA301P or BA302P,
Section 6.4.
• By means of the parameters
– PRESSURE_1_ACCEPT_ZERO_INSTALL_
OFFSET/POS. ZERO ADJUST (→ Page 38) or
– PRESSURE_1_ACCEPT_INSTALL_OFFSET/
POS. INPUT VALUE (→ Page 38) or
– PRESSURE_1_INSTALL_OFFSET/CALIB. OFFSET
(→ Page 38).
Carry out basic setup:
4 Select the measuring mode if necessary:
• Select the "Level linearized" option by means of the
LINEARIZATION parameter.
• Select the "Volume" option by means of the
PRIMARY_VALUE_TYPE parameter. See also the
following note, point 3.
5 Select a pressure unit via the CAL_UNIT parameter, here
mbar for example.
6 Select the "Pressure linearized" option by means of the
LEVEL_TYPE/LEVEL MODE parameter.
7 Select the "Pressure and volume" option by means of the
MEASURAND_LINEAR/Lind. MEASURAND
parameter.
8 Select a volume unit via the VOLUME_UNIT/UNIT
VOLUME parameter, here m
3
for example.
9Select SCALE_IN parameter, EU_0 element.
Enter the minimum hydrostatic pressure to be expected,
here 0 mbar for example.
10 Select SCALE_IN parameter, EU_100
element.
Enter the maximum hydrostatic pressure to be expected,
here 350 mbar for example.
3.5
0
0 350
V
[m ]
3
p
[mbar]