Siemens 7ML5431 - Page 193

Dimension drawings
12.6 Stainless steel threaded horn antenna with extension
SITRANS LR250 with mA/HART
Operating Instructions, 10/2019, A5E32220602-AG
193
Threaded horn with extension dimensions
Antenna
Type
Antenna
O.D., mm
(inch)
Height to sensor reference point, mm (inch)
a)
Beam Angle
(°)
b)
Measurement
range, m (ft)
1-1/2" threaded con-
nection
2" threaded con-
nection
3" threaded
connection
1.5"
39.8 (1.57)
235 (9.25)
N/A
N/A
19
10 (32.8)
2"
47.8 (1.88)
N/A
266 (10.47)
280 (11.02)
15
20 (65.6)
3"
74.8 (2.94)
N/A
299 (11.77)
313 (12.32)
10
20 (65.6)
4"
94.8 (3.73)
N/A
354 (13.94)
368 (14.49)
8
20 (65.6)
a)
Height from bottom of horn to sensor reference point as shown: see dimension drawing.
b)
-3dB in the direction of the polarization axis. For an illustration, see Polarization reference
point (Page 32).