User's Manual

7ML19985JE03 SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 89
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Parameters
Enter up to 32 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 four tables: Table 1-8, Table 9-16, Table 17-24, and
Table 25-32.
Entering breakpoints via SIMATIC PDM:
• See
Using Linearization via the Quick Start wizard on page 45.
Entering breakpoints via the handheld programmer:
a) The default unit for level values is m: to change it navigate to Setup (2.) >
Sensor (2.2.) > Units (2.2.1.), and select the desired unit.
b) Navigate to Setup (2.) > Linearization (2.7.) > Maximum Volume (2.7.1.2.),
and enter the value.
c) Go to the appropriate table for the particular breakpoint you wish to adjust:
for example, go to Table 1-8 for breakpoint 1.
d) Under Table 1-8, go to Level 1 (2.7.2.1.) to enter the level value for the
breakpoint 1.
e) Under Table 1-8, go to Volume 1 (2.7.2.2.) to enter the volume value for the
breakpoint 1
f) Repeat steps c) to e), till values have been entered for all required
breakpoints.
2.7.2.1. Level 1
a) Press RIGHT arrow to open Edit mode.
b) Enter level value and press RIGHT arrow to accept it.
c) Press Down ARROW to move to corresponding volume breakpoint.
2.7.2.2. Volume 1
a) Press RIGHT arrow to open Edit mode.
b) Enter volume value and press RIGHT arrow to accept it.
c) Press Down ARROW to move to next level breakpoint.
Example (values are for example purposes only)
2.7.3. Table 9-16
2.7.4. Table 17-24
2.7.5. Table 25-32
4
19.5
9
5
0
Breakpoint
number
3
2
1
Breakpoint
Number
Level value
(m)
Volume
value (l)
100
25500
3 9 3000
4 19.5 8000
Level
value