Emerson Rosemount 5900C, Reference Manual

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Figure 3-9: Nozzle Requirements for the Rosemount 5900C with Parabolic Antenna
C
E
B
F F
A
D D
A. Minimum 800 mm (31 in.) for highest accuracy. Minimum 500 mm (20 in.) with
reduced accuracy.
B. Recommended height: 400 mm (16 in.). Maximum height: 600 mm (24 in.).
C. Minimum nozzle diameter: 500 mm (20 inch.)
D. Vertical plumb line
E. Ø 440 mm (17.3 in.)
F. 5° minimum
Free space requirements
The radar beam of the Rosemount 5900C with Parabolic Antenna is 10° wide. Obstacles
(construction bars, pipes larger than Ø 2", etc.) within the radar beam are generally not
accepted, as these may result in disturbing echoes. However, in most cases, a smooth tank
wall or small objects will not have any significant influence on the radar beam.
The antenna axis should be located at least 800 mm (31 in.) from the tank wall for best
performance. For evaluation contact Emerson Automation Solutions/ Rosemount Tank
Gauging.
Reference Manual Installation
00809-0100-5901 September 2019
Rosemount 5900C Radar Level Gauge 37