Still Pipe/Chamber Installations - Emerson Rosemount 5408 Reference Manual

Figure 3-8:
H
A.
B.
Table 3-7:
Nozzle size (D)
Pipe schedule std, Ø 8 in. (200 mm)
Pipe schedule std, Ø10 in. (250 mm)
(1) Note that the inside of the nozzle must be smooth (i.e. avoid bad welding, rust, or deposit).
3.3.8

Still pipe/chamber installations

Installation in still pipe/chamber is recommended for tanks where there are excessive
foaming or turbulence. Still pipe/chamber may also be used to avoid disturbing objects in
the tank.
Still pipe
Consider the following still pipe requirements:
Rosemount 5408 and 5408:SIS Level Transmitters
Mounting of the Parabolic Antenna
A
D
Nozzle mounting
Flange mounting in manhole cover
Nozzle Requirements for Parabolic Antenna, in Inches (Millimeters)
H
Ø 8 in. (200 mm)
Inclination angle (α) Maximum nozzle height (H)
0° 5.9 (150)
3° 5.5 (140)
6° 1.6 (40)
9° 1.2 (30)
12° 1.0 (25)
15° 0.6 (15)
0° 8.0 (200)
3° 8.0 (200)
6° 8.0 (200)
9° 8.0 (200)
12° 5.9 (150)
15° 4.3 (110)
Mechanical Installation
B
(1)
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