User's Manual

Dimension drawings
12.4 Flanged horn antenna with extension
SITRANS LR250 (HART)
Operating Instructions, 01/2014, A5E32220602-AB
199
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 Raised-Face flange
per EN 1092-1 for flanged horn antenna (Page 206) or Flat-Face Flange. (Page 211)
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 206).
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.