Siemens Sitrans LR200 Instruction Manual page 95

5.8 GHz Model
Values
Antenna/Pipe Size
Propagation Factor
a)
Since pipe dimensions may vary slightly, the propagation factor may
also vary.
6.3 GHz Model
Values
Antenna/Pipe Size
Propagation Factor
a)
Since pipe dimensions may vary slightly, the propagation factor may
also vary.
2.8.4. Echo select
2.8.4.1.
Selects the algorithm to be applied to the echo profile to extract the true
echo.
Options
2.8.4.2.
Defines where on the echo the distance measurement is determined.
Position Detect (2.8.4.2.) on page 123
Options
Related
parameters
If the vessel bottom is being reported as the level instead of the actual
material level (at low level conditions), or if the dielectric constant of the
liquid to be monitored is less than 3, we recommend setting Position to
Hybrid and CLEF Range (2.8.4.4.) to 0.5 m (1.64 ft).
7ML19985JP02 SITRANS LR200 (HART) – INSTRUCTION MANUAL
Range: 0.3 to 1.5 depending on pipe size.
Default: 1.000
50 mm (2")
a)
(I.D.)
0.7953
Range: 0.3 to 1.5 depending on pipe size.
Default: 1.000
50 mm (2")
a)
(I.D.)
0.8298
Algorithm
*
BLF Best of First or Largest echo
Position Detect
Center
* Hybrid (Center and CLEF)
CLEF (Constrained Leading Edge Fit)
CLEF Range (2.8.4.4.)
80 mm 100 mm
(3") (4")
0.9254 0.9530
80 mm 100 mm
(3") (4")
0.9372 0.9603
tF true First echo
L Largest echo
for more detail.
200 mm
150 mm (6")
(8")
0.9794 0.9884
200 mm
150 mm (6")
(8")
0.9825 0.9902
See
Page 87