User's Manual

Dimension drawings
12.4 Flanged horn antenna with extension
SITRANS LR250 (FOUNDATION FIELDBUS)
Operating Instructions, 01/2014, A5E32221411-AB
213
Flanged horn with extension dimensions
Nominal horn
size
in mm (inch)
Horn O.D. in mm
(inch)
Height to sensor reference point
,
, in mm
(inch)
a)
Beam angle
(°)
b)
Measurement range,
in 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 Flanged horn
antenna (Page 210) or Flat-Face Flange. (Page 225)
b)
-3dB in the direction of the polarization axis (see Polarization reference point (Page 20) for an
illustration).
c)
Optional alloy N06022/2.4602 (Hastelloy
®
C-22 or equivalent). See Raised-Face flange per EN
1092-1 for flanged horn antenna (Page 220).
Note
Heights to sensor reference point are for stainless steel flanges. For optional alloy
N06022/2.4602 (Hastel
loy
©
C-22 or equivalent) see Flanged Horn dimensions above.