Siemens SITRANS L Operating Instructions Manual page 222

Dimension drawings
12.29 Threaded connection markings
Height from bottom of antenna to sensor reference point as shown: see dimension
a)
drawing.
-3dB in the direction of the polarization axis. See Polarization reference point (Page 29) for
b)
an illustration.
20m when installed in stillpipe.
c)
12.29 Threaded connection markings
With the exception of the threaded PVDF antenna, threaded connection markings are found
on the flat face/faces of the process connection.
Serial number: a unique number allotted to each process connection, including the date of
manufacture (MMDDYY) followed by a number from 001 to 999, (indicating the sequential
unit produced).
222
SITRANS LR250 with FOUNDATION FIELDBUS
Operating Instructions, 09/2021, A5E32221411-AH