Nozzle Location - Siemens SITRANS LR250 Operating Instructions Manual

Installing/mounting
4.3 Proper mounting
4.3.2

Nozzle location

● Avoid central locations on tall, narrow vessels
● Nozzle must be vertical and clear of imperfections
Beam angle
Note
• Beam width depends on antenna size and is approximate: see below.
• For details on avoiding false echoes, see Auto False Echo Suppression.
● 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.
28
Preferred
Undesirable
SITRANS LR250 (PROFIBUS PA)
Operating Instructions, 08/2014, A5E32221386-AC