Siemens SITRANS LR200 Instruction Manual page 101

2.6.2. Volume
When the vessel shape is too complex for any of the preconfigured shapes, you
can define the shape as a series of segments. First assign a value to each level
breakpoint., then assign a corresponding value to each volume breakpoint.
(Volume values can be percent or volumetric; level values can be percent or
linear.)
Level Values
Volume Values
Enter up to 11 level breakpoints, where the corresponding volume is known. The
values corresponding to 100% and 0% levels must be entered. The breakpoints
can be ordered from top to bottom, or the reverse. Breakpoints are grouped into 3
tables:
2.6.2.1. Table A (1 - 4)
2.6.2.2. Table B (5 - 8)
2.6.2.3. Table C (9 -11)
Entering breakpoints in PDM:
a.
b.
c.
d.
e.
f.
g.
Example:
7ML19985HP01 SITRANS LR 200 (PROFIBUS PA) – INSTRUCTION MANUAL
Range: 0.0000 to 99999 (%, ft, m, in, cm, mm, gal, L, imp.
gal: see PDM for more)
Default: 0.0
Range: 0.0000 to 99999 (% or volumetric units)
Default: 0.0
First go to Linearization > PV (volume/level) units, and select the
desired volume units.
The default for level values is percent: if you want to select units
instead, go to Input > Sensor Calibration > Unit (level), and select the
desired unit.
Go to > Linearization/Tank Shape, and select Linearization table
option.
Go to Detailed Setup > Volume > Table 1 - 4.
In Level 1, enter a level value for breakpoint 1.
In Volume 1, enter the corresponding volume value for breakpoint 1.
Repeat steps c and d (using Tables 5 - 8 and 9 - 11 if required), until
values have been entered for all the required breakpoints.
Level
Breakpoint
value
number
4 20
9
3
2
5
1
0
Note:
values are for example purposes only.
Level
Breakpoint
value
Number
(m)
1 0
2 5
3 9
4 20
Volume
value
(l)
0
500
3000
8000
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