Siemens Sitrans LR250 Instruction Manual page 19

Horn dimensions
Nominal Horn Size Horn O.D.
40 mm (1.5")
50 mm (2")
80 mm (3")
100 mm (4")
a)
Height from bottom of horn to sensor reference point.
b)
– 3dB in the direction of the polarization axis (see
on page 16 for an illustration).
Threaded Connection Markings
Threaded connection markings are found on the flat face/faces of the process
connection.
Logo
Serial number:a unique number allotted to each flange, including the date of manufacture
(MMDDYY) followed by a number from 001 to 999.
7ML19985JF02 SITRANS LR250 (PROFIBUS PA) – INSTRUCTION MANUAL
Horn
39.8 mm (1.57") A
47.8 mm (1.88") B
74.8 mm (2.94") C
94.8 mm (3.73") D
Serial Number
MMDDYYXXX
Height to sensor
Beam Angle
a)
reference point
135 mm (5.3") 19 degrees
166 mm (6.55") 15 degrees
199 mm (7.85") 10 degrees
254 mm (10") 8 degrees
Polarization reference point
Thread Size
1.5
Measurement
b)
Range
10 m (32.8 ft)
20 m (65.6 ft)
Thread Series
NPT
BSP
G/PF
Page 13