User's Manual

Commissioning
6.2 Application examples
SITRANS LR250 (PROFIBUS PA)
Operating Instructions, 01/2014, A5E32221386-AB
57
Propagation Factor/Stillpipe Diameter
Values
Range
0.3 to 1.0 depending on pipe size
Default
1.0000
Nominal Pipe Size
a)
40 mm (1.5")
50 mm (2")
80 mm (3")
100 mm (4")
Propagation Factor
0.9844
0.988
0.9935
0.9965
CLEF Range (2.5.7.4.) settings
Low
calibration
point - 700
mm (2.29 ft)
b)
Low
calibration
point - 700
mm (2.29 ft)
b)
Low
calibration
point - 1000
mm (3.28 ft)
b)
Low
calibration
point - 1000
mm (3.28 ft)
b)
a)
Since pipe dimensions may vary slightly, the propagation factor may also vary.
b)
CLEF range covers the whole measurement range except first 700 or 1000 mm from sensor
reference point
Note
Flanged encapsulated antenna
For Flanged encapsulated antenna (7ML5432) match the process connection size to the
pipe diameter.
For example, DN80/3" flange to DN80/3" pipe.