Nozzle Location - Siemens SITRANS L Operating Instructions Manual

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
Emission cone type and beam angle
Antenna type
Horn
SITRANS LR250 with FOUNDATION FIELDBUS
Operating Instructions, 09/2021, A5E32221411-AH
Emission cone
Beam angle
Antenna size
1.5"
2"
Installing/mounting
4.3 Proper mounting
Preferred
Undesirable
Beam angle
19°
15°
27