Siemens 7ML5431 - Threaded Connection Markings

Dimension drawings
12.29 Threaded connection markings
SITRANS LR250 with mA/HART
220 Operating Instructions, 10/2019, A5E32220602-AG
Threaded PVDF antenna dimensions
Nominal antenna
size
Antenna O.D.
Height to sensor
reference point
a)
Beam angle
b)
Measurement
range
50 mm (2")
49.5 mm (1.94")
121 mm (4.76")
19 degrees
10 m (32.8 ft)
c)
a)
Height from bottom of antenna to sensor reference point as shown: see dimension
drawing.
b)
-3dB in the direction of the polarization axis. See Polarization reference point (Page 32) for
an illustration.
c)
20m when installed in stillpipe.
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).