Endress+Hauser Cerabar M - 9.9 Linearization

Cerabar M, Deltabar M, Deltapilot M Commissioning with the FF configuration program
Endress+Hauser 159
9.9 Linearization
9.9.1 Manual entry of the linearization table
Example:
In this example, the volume in a tank with a conical outlet should be measured in m
3
.
Prerequisite:
• This is a theoretical calibration, i.e. the points for the linearization table are known.
• The "Level" measuring mode has been selected. The Primary Value Type/
PRIMARY_VALUE_TYPE parameter is set to "Level" or "Level height".
• A level calibration has been performed.
For a description of the parameters mentioned, Section 8.11 "Description of parameters".
Error message F510 "Linearization" and alarm current appears as long as the table is being
entered and until the table is activated.
Description
1 Open the Pressure Transducer Block and set the
block mode to OOS.
A0030032
2 Select the "Manual input" option via the Lin. mode/
LINEARIZATION_ TABLE_MODE parameter.
3 Select by means of the Unit after lin./
AFTER_LINEARIZATION_UNIT parameter, m
3
for
example.
4 By means of the Lin tab index 01/
LIN_TAB_X_Y_VALUE_1 to Lin tab index 32/
LIN_TAB_X_Y_VALUE_32 parameters, select the
desired X-values and Y-values.
5 Once all the points have been entered in the table,
select the "Activate table" option via the "Lin. mode/
LINEARIZATION_ TABLE_MODE" parameter.
6 Set the Pressure Transducer Block to the "Auto" block
mode.
7 Result:
The measured value after linearization is displayed.
h
[m]
0
0 3.0
h
[m]
3.5
0
0 3.0
V
[m
3
]
V
[m
3
]