Level measurement (ToF Tool) Cerabar S/Deltabar S
82 Endress+Hauser
3. Once you have selected the "Pressure linearized" level type, the warning message "W710 Set
span too small. Not allowed." can appear. At this stage the linearisation table already consists
of two points as standard. It could be the case that the 2nd value, and thus the highest X-VAL.
of the linearisation table, is smaller than the minimum span permitted (→ MINIMUM SPAN,
Page 140). The message disappears as soon as the highest X-VALUE is greater than the
minimum span and the table entered is active.
4. Once you have entered the maximum tank contents to be expected for TANK CONTENT
MAX., the alarm "A719 Y-Val of lin. table out of edit limits" can appear. At this stage, the
linearisation table already consists of two points as standard. It could be the case that the 2nd
value and thus the highest Y-VALUE of the linearisation table is greater than the value entered
for TANK CONTENT MAX. The message disappears as soon as no Y-VALUE is greater than
the value for TANK CONTENT MAX. and the table entered is active.
8.3.2 Manual 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:
• This is a theoretical calibration, i.e. the points for the linearisation table are known.
!
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 98, ToF Tool, table 4: POSITION ADJUSTMENT
– Page 101, ToF Tool, table 6: BASIC SETUP
– Page 112, ToF Tool, table 8: BASIC SETUP – "Pressure linearized" level type
– Page 132, ToF Tool, table 14: LINEARISATION
• For a description of further relevant parameters, see
– Page 129, ToF Tool, table 12: EXTENDED SETUP
– Page 143, ToF Tool, table 22: PROCESS VALUES.
To Next Page
Loading...
