Operating Instructions

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½" NPT cable entry, or M20 cable gland enclosure/electronics
threaded cover retaining collar
2" horn process connection tag
3" horn horn
4" horn sensor reference point
horn O.D.
Dimensions in mm (inch)
Threaded horn 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 con‐
nection
1.5" 39.8 (1.57) 135 (5.3) N/A N/A 19 10 (32.8)
2" 47.8 (1.88) N/A 166 (6.55) 180 (7.09) 15 20 (65.6)
3" 74.8 (2.94) N/A 199 (7.85) 213 (8.39) 10 20 (65.6)
4" 94.8 (3.73) N/A 254 (10) 268 (10.55) 8 20 (65.6)
Dimension drawings
12.5 Stainless steel threaded horn antenna
SITRANS LR250 with mA/HART
182 Operating Instructions, 10/2019, A5E32220602-AG