Siemens SITRANS LR250 Instruction Manual page 73

2.2.3. Volume Breakpoints
2.2.3.1. Maximum Volume
The maximum volume of the tank. Enter the vessel volume corresponding to
High Calibration Point. For example, if your maximum vessel volume is 8000 L,
enter a value of 8000. The units of volume are not entered, but are implied.
Values
Related Parameters
2.2.3.2. Dimension A
The height of the vessel bottom in sensor units when the bottom is conical,
pyramidal, parabolic, spherical, or flat -sloped. If the vessel is horizontal with
parabolic ends, the depth of the end. See 2.2.2.1. Vessel Shape for an
illustration.
Values
Related Parameters
2.2.3.3. Dimension L
Length of the cylindrical section of a horizontal parabolic end vessel, in
sensor units. See 2.2.2.1. Vessel Shape for an illustration.
Values
Related Parameters
2.2.3.4. Table 1-8
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 sensor units. Volume units are defined
by the user but are not explicitly stated in the SITRANS LR250.
Level Values
Volume Values
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 hand-held programmer:
a.
7ML19985JE01
Range: 0.0000 to 99999
Default: 100.0
Low Calibration Point
High Calibration Point
Vessel Shape
Range: 0.0000 to 99999 in units
Default: 0.0
Vessel Shape
Range: 0.0000 to 99999 in units
Default: 0.0
Vessel Shape
Range: 0.0000 to 99999 (m, cm, mm, ft, in)
Default: 0.0
Range: 0.0000 to 99999
Default: 0.0
Go to the appropriate table for the particular breakpoint you wish to
adjust: for example, go to Table 1-8 for breakpoint 1.
SITRANS LR250 (HART) – INSTRUCTION MANUAL Page 69