Operating Instructions

Table Of Contents
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 Raised-Face flange
(Page 213) or Flat-Face Flange. (Page 217)
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 213).
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.
Dimension drawings
12.8 Stainless steel flanged horn antenna with extension
SITRANS LR250 with mA/HART
Operating Instructions, 10/2019, A5E32220602-AG 189