Installing/mounting
4.3 Proper mounting
SITRANS LR250 with mA/HART
30 Operating Instructions, 10/2019, A5E32220602-AG
4.3.2 Nozzle location
● Avoid central locations on tall, narrow vessels
● Nozzle must be vertical and clear of imperfections
Beam angle
Beam width depends on antenna size and is approximate: see below.
For details on avoiding false echoes, see Auto False Echo Suppression (Page 238).
● Beam angle is the width of the cone where the energy density is half of the peak energy
density.
● The peak energy density is directly in front of and in line with the antenna.
● There is a signal transmitted outside the beam angle, therefore false targets may be
detected.
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