Operating Instructions

Table Of Contents
12.7 Stainless steel flanged horn antenna
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


















½" NPT cable entry, or M20 cable gland flange
threaded cover name-plate
horn retaining collar
horn O.D. process connection tag
enclosure/electronics sensor reference point
Dimensions in mm (inch)
Flanged Horn 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) 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 Stainless steel flanged
horn antenna with extension (Page 188). See also Raised-Face flange (Page 213), or Flat-
Face flange (Page 217).
Dimension drawings
12.7 Stainless steel flanged horn antenna
SITRANS LR250 with mA/HART
186 Operating Instructions, 10/2019, A5E32220602-AG