Siemens Sitrans LR250 Instruction Manual page 54

2.2.1.6. Low Calibration Pt.
Distance from Sensor Reference to Low Calibration Point (corresponding to
Low Level Point). Units are defined in Sensor Units.
High Level Point
(default: 100%)
Low Level Point
(default: 0%)
Values
2.2.1.7. High Calibration Pt.
Distance from Sensor Reference to High Calibration Point (corresponding
to High Level Point). Units are defined in Sensor Units. (See Operation
types for an illustration.)
Values
Related parameters
When setting the High Calibration Point value, note that echoes are ignored
within Near Range (2.2.1.11).
2.2.1.11. Near Range
The range in front of the device (measured from the sensor reference point)
within which any echoes will be ignored, defined in sensor units. This is
sometimes referred to as blanking or a dead zone. The factory setting is
50 mm past the end of the horn, and the range is dependent on the horn
type.
Values
1.
The point from which level measurement is referenced. See
Flanged Horn
and
2.
The value produced by the echo processing which represents the distance from sen-
sor reference point to the target.
Page 58 SITRANS LR250 (HART) – INSTRUCTION MANUAL
Range: 0 to 20 m. Default 20.000 m
Min. 1.5" horn
4" horn with 100 mm
Max.
extension
on page 11.
High
Calibration
Point
Level
Far Range
Range: 0 to 20 m. Default 0.000 m
2.2. 1 . 1 1. Near Range
Factory Defaults
Dimensions
1 2
sensor
reference
1
point
Low
Calibration
Point
0.185 m (7.28")
0.270 m (10.62")
on page 10
7ML19985JE01