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Dimension drawings
12.8 Stainless steel flanged horn antenna with extension
SITRANS LR250 with FOUNDATION FIELDBUS
Operating Instructions, 09/2021, A5E32221411-AH
199
Flanged horn with extension dimensions
Nominal horn
size,
mm (inch)
Horn O.D., mm
(inch)
Height to sensor reference point
,
, mm
(inch)
a)
Beam angle
(°)
b)
Measurement
range, m (ft)
Stainless steel flange:
raised or flat-face
Optional alloy
flange
c)
50 (2)
47.8 (1.88)
235.3 (9.26)
238.3 (9.38)
15
20 (65.6)
80 (3)
74.8 (2.94)
268.3 (10.56)
271.3 (10.68)
10
100 (4)
94.8 (3.73)
323.3 (12.73)
326.3 (12.85)
8
a)
Height from bottom of horn to sensor reference point as shown: See also Stainless steel
flanged horn antenna (Page 196) or Flat-Face Flange. (Page 227)
b)
-3dB in the direction of the polarization axis (see Polarization reference point (Page 29) for
an illustration).
c)
Optional alloy N06022/2.4602 (Hastelloy
®
C-22 or equivalent). See Raised-Face flange
(Page 223).
Note
Heights to sensor reference point are for stainless steel flanges. For optional alloy
N06022/2.4602 (Hastelloy
©
C-22 or equivalent) see Flanged Horn dimensions above.