Nozzle Location - Siemens 7ML5431 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 (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.
①
②
30
Emission cone
Beam angle
Preferred
Undesirable
SITRANS LR250 with mA/HART
Operating Instructions, 10/2019, A5E32220602-AG