Siemens 7ML5431 - Page 197

Dimension drawings
12.8 Stainless steel flanged horn antenna with extension
SITRANS LR250 with mA/HART
Operating Instructions, 10/2019, A5E32220602-AG
197
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 221) or Flat-Face Flange. (Page 226)
b)
-3dB in the direction of the polarization axis (see Polarization reference point (Page 32) for
an illustration).
c)
Optional alloy N06022/2.4602 (Hastelloy
®
C-22 or equivalent). See Raised-Face flange
(Page 221).
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.