Nozzle Location - Siemens SITRANS LR250 Compact Operating Instructions

Installing/mounting
4.3 Proper mounting
4.3.3

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 table below.
• 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
22
Emission cone
Beam angle
Preferred
Undesirable
SITRANS LR250 with FOUNDATION FIELDBUS
Compact Operating Instructions, 09/2021, A5E48453221-AB