Installation Instructions

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Siemens FI 01 · Update 11/2019
Level Measurement
Continuous level measurement
Radar level transmitters
SITRANS LR250 with PVDF antenna or Polypropylene lens antenna
4
■ Dimensional drawings
SITRANS LR250 PVDF antenna and Polypropylene lens antenna, dimensions in mm (inch)
1/2" NPT cable entry (or
alternatively, M20 cable gland)
Threaded cover
Threaded PVDF antenna
Polypropylene lens antenna
Polypropylene Flange
Sensor reference
point
Threaded PVDF
antenna
2" thread
Process
connection tag
Enclosure/
electronics
Bolt hole circle
min. Ø
Bolt hole circle
max. Ø
Bolt
hole
radius
Number of
slotted bolt
holes
Aluminum
antenna
Product
tag
49.5
(1.94)
antenna O.D.
Nominal
pipe
size
OD
± 1
Bolt hole
radius
± 0.25
Number
of
slotted
holes
B.C.D.
max. for
slotted holes
(bmax.)
± 0.75
B.C.D.
min. for
slotted holes
(bmin.)
± 0.75
50
(2.0)
167
(6.6)
90
(3.5)
90
(3.5)
146
(5.74)
154
(6.1)
184
(7.24)
121
(4.76)
(3.5)
90
(6.6)
167
(6.4)
162
162
(11.8)
4
6
3
8
8
8
200
160
150
R 9.5
R 9.5
R 11.5
175
240
191
242
229
285
© Siemens 2019