User's Manual

Dimension drawings
12.3 Flanged horn antenna
SITRANS LR250 (HART)
Operating Instructions, 01/2014, A5E32220602-AB
197
Flanged Horn 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)
135.3 (5.32)
138.3 (5.44)
15
20 (65.6)
80 (3)
74.8 (2.94)
168.3 (6.62)
171.3 (6. 74)
10
100 (4)
94.8 (3.73)
223.3 (8.79)
226.3 (8.90)
8
a)
Height from bottom of horn to sensor reference point as shown: see Flanged horn antenna with
extension (Page 198). 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
Dimensions (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.