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Installing/mounting
4.3 Proper mounting
SITRANS LR250 with FOUNDATION FIELDBUS
Operating Instructions, 09/2021, A5E32221411-AH
27
4.3.2
Nozzle location
•
Avoid central locations on tall, narrow vessels
•
Nozzle must be vertical and clear of imperfections
Preferred
Undesirable
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
Emission cone
②
Beam angle
Emission cone type and beam angle
Antenna type
Antenna size
Beam angle
Horn
1.5"
19°
2"
15°
Содержание SITRANS L
Страница 258: ...LCD menu structure SITRANS LR250 with FOUNDATION FIELDBUS 258 Operating Instructions 09 2021 A5E32221411 AH ...
Страница 259: ...LCD menu structure SITRANS LR250 with FOUNDATION FIELDBUS Operating Instructions 09 2021 A5E32221411 AH 259 ...
Страница 260: ...LCD menu structure SITRANS LR250 with FOUNDATION FIELDBUS 260 Operating Instructions 09 2021 A5E32221411 AH ...