Emerson Rosemount 5408 Reference Manual page 23

Reference Manual
00809-0100-4408
Table 3-5: Nozzle Requirements for Cone Antenna, in Inches (Millimeters)
Antenna size Minimum nozzle diameter (D)
1½-in. (DN 40) 1.50 (38.1)
2-in. (DN50) 1.94 (49.3)
3-in. (DN80) 2.80 (71.0)
4-in. (DN100) 3.78 (96.0)
(1) The antennas are sized to fit within schedule 80 or lower schedules.
(2) The values are valid for cone antennas without antenna extension.
(3) For liquid applications, the cone antenna can be recessed in smooth nozzles up to 4 ft. (1.2 m), but note that
the accuracy may be reduced in the region close to the nozzle.
Nozzle requirements for process seal antenna
The antenna can be used on nozzles up to 4 ft. (1.2 m). Disturbing objects inside the nozzle
may impact the measurement, and should therefore be avoided.
Figure 3-7: Mounting of the Process Seal Antenna
Table 3-6: Nozzle Requirements for Process Seal Antenna
Antenna size
2-in. (DN50)
3-in. (DN80)
4-in. (DN100)
(1) The antennas are sized to fit within schedule 120 or lower schedules.
(2) For hygienic applications, the nozzle height (H) must not exceed two times the nozzle
diameter (D) to ensure cleanability. Maximum nozzle height is 5 in. (127 mm).
Nozzle requirements for parabolic antenna
See Table 3-7
Rosemount 5408 and 5408:SIS Level Transmitters
(1)
Antenna
5.59 (142)
5.71 (145)
5.63 (143)
6.54 (166)
Minimum nozzle diameter (D)
1.77 in. (45 mm)
2.76 in. (70 mm)
2.76 in. (70 mm)
for nozzle height recommendations at different inclination angle.
Recommended maximum nozzle height (H)
Antenna with air purge ring (code PC1)
(1) Recommended maximum nozzle height
(H) (2)
4 ft. (1.2 m)
4 ft. (1.2 m)
4 ft. (1.2 m)
Mechanical installation
March 2023
(2)(3)
N/A
4.69 (119)
4.61 (117)
5.51 (140)
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