Horn Antenna Requirements - Emerson Rosemount 5900 Reference Manual

Rosemount 5900 Series
3.2.1 Horn Antenna
Requirements
Table 3-1. Minimum nozzle
diameter for the 5900 with horn
antenna
Figure 3-1. Nozzle requirements
for the Horn Antenna Gauge
Note!
Highest accuracy is
achieved for product
levels outside a region of
approximately 850 mm
below the flange.
3-4
Preliminary
The Rosemount 5920 with horn antenna must be installed so that there are no
pipes or other obstacles that could prevent the radar beam from reaching the
tank bottom unobstructed. There are two flanges available; a horizontal flange
for vertical installation, and an inclined flange for installation close to the tank
wall.
Please refer to mechanical installation drawings for more information on the
installation requirements of the Horn Antenna and service space
requirements.
Nozzle Requirements
Maximum nozzle height 330 mm.
Minimum nozzle diameter:
Flange
Horizontal flange
4° flange
Service space 400 mm
Minimum nozzle
diameter 180 mm
HORIZONTAL FLANGE
Minimum nozzle diameter (mm)
180
185
Note!
For best performance the
antenna should reach out
below the nozzle
Reference Manual
300520EN, Rev AA
November 2009
Minimum nozzle
diameter 185 mm
4° FLANGE
Section 3. Installation