Siemens SITRANS L Operating Instructions Manual page 132

Parameter reference
Nominal Pipe Size
Propagation Factor
CLEF Range (2.5.7.4.)
Since pipe dimensions may vary slightly, the propagation factor may also vary.
a)
CLEF range covers the whole measurement range except first 700 or 1000 mm from unit
b)
reference
point (see A in graphic below)
①
②
A
Note
Flanged encapsulated antenna
For Flanged encapsulated antenna (7ML5432) match the process connection size to the pipe
diameter whenever possible (for example, mount a DN80/3" flange on DN80/3" pipe).
Minimum Sensor Value (2.5.4.)
The minimum usable value for the measuring range, in units defined in Unit (2.3.1.). (Default
= 0.0 m)
To view this parameter via AMS Device Manager see Range under Signal Processing (LTB)
(Page 80).
Maximum Sensor Value (2.5.5.)
The maximum usable value for the measuring range, in units defined in Unit (2.3.1.).
(Default = 33.0 m)
To view this parameter via AMS Device Manager see Range under Signal Processing (LTB)
(Page 80).
132
a)
sensor reference point
air gap
700 or 1000 mm
40 mm (1.5") 50 mm (2")
0.9844 0.988
Low calibration Low calibration
point - 700 mm point - 700 mm
(2.29 ft) (2.29 ft)
b)
③
④
80 mm (3")
0.9935
Low calibration
point - 1000
mm (3.28 ft)
b) b)
low calibration point
CLEF range 2.5.7.4.
SITRANS LR250 with FOUNDATION FIELDBUS
Operating Instructions, 09/2021, A5E32221411-AH
100 mm (4")
0.9965
Low calibration
point - 1000 mm
(3.28 ft)
b)