Siemens SITRANS LR250 Instruction Manual page 71

Note:
the parameter
factor should be set according to the antenna/pipe size: see the table
below..
Antenna/Pipe
Size (I.D.)
Propagation
Factor
Low dK material
tracking value
2.2.1.15. Level Offset
A constant offset that can be added to Level to form Level output. The unit is
defined in Sensor Units.
Values
2.2.2. Volume conversion
Carries out a volume conversion from a level value.
2.2.2.1. Vessel Shape
Defines the vessel shape and allows the LR250 to calculate volume instead of
level. If "none" is selected, no volume conversion is performed. Select the
vessel shape matching the monitored vessel or reservoir.
a
b
c
7ML19985JE01
When operating with a waveguide antenna or stillpipe, values for
2.2.4.4.3. Low dK Material Tracking
50 mm (2") 80 mm (3") 100 mm (4")
0.990
Cal Lo –
700 mm
Default: 0 m
Vessel Shape
* None
SITRANS LR250 (HART) – INSTRUCTION MANUAL
and for the propagation
0.9957 0.9965
Cal Lo – Cal Lo –
1000 mm 1000 mm
Description
no volume calculation
required
flat end horizontal
cylinder
sphere
150 mm 200 mm
(6") (8")
0.999 0.9994
Cal Lo – Cal Lo –
1000 mm 1000 mm
Also required
N/A
maximum volume
maximum volume
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