Parameter reference
SITRANS LR250 with mA/HART
Operating Instructions, 10/2019, A5E32220602-AG
125
Vessel Dimension L (2.7.1.4.)
Length of the cylindrical section of a horizontal parabolic end vessel. See Vessel Shape
(2.7.1.1.) for an illustration.
Units (2.2.1.)
Table 1-8 (2.7.2.)
Note
Linearization Table must be selected in Vessel Shape (2.7.1.1.)
in order for level/volume
values to be transferred.
If your vessel shape is more complex than any of the preconfigured shapes, you can define
the shape as a series of segments. A value is assigned to each level breakpoint and a
corresponding value is assigned to each volume breakpoint. Level values are defined in
Units (2.2.1.). Volume units are defined by the user but are not explicitly stated in the
SITRANS LR250.
Range:
to
Span = High Calibration Pt. (2.3.2.) - Low Calibration Pt. (2.3.1.)
Range: 0.0 to Maximum Volume (2.7.1.2.)
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 the handheld programmer:
1. 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.
2. Navigate to Setup (2.) > Linearization (2.7.) > Maximum Volume (2.7.1.2.), and enter the
value.
3. Go to the appropriate table for the particular breakpoint you wish to adjust: for example,
go to Table 1-8 for breakpoint 1.
4. Under Table 1-8, go to Level 1 (2.7.2.1.) to enter the level value for the breakpoint 1.
5. Under Table 1-8, go to Volume 1 (2.7.2.2.) to enter the volume value for the breakpoint 1.
6. Repeat steps 3 to 5, until values have been entered for all required breakpoints.
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