Emerson Rosemount 5900S Reference Manual page 38

Installation
September 2019
Flange requirements
The Rosemount 5900S with Still-pipe Array Antenna fits flanges of size 5, 6, 8, 10 and 12
inch. The gauge has a flange for sealing the tank. The tank flange must be horizontal
within ±2°.
Figure 3-8: The Flange Must Be Horizontal Within ±2°
Recommended installation
When designing new tanks, an 8 inch still-pipe or larger is recommended. This is
particularly important in tanks with sticky and viscous products. See drawing
D9240041-917 "Recommended still-pipes" for more information on recommended still-
pipes for the Rosemount 5900S. Before manufacturing a new still-pipe, we recommend
that you contact Emerson Automation Solutions / Rosemount Tank Gauging for advice.
For highest performance, the total area of the slots or holes in the still-pipe must not
exceed the values shown in
holes over the entire length of the pipe, regardless of its length. In some cases it is possible
to allow a larger total area than stated in
contact Emerson Automation Solutions / Rosemount Tank Gauging for advice.
Table 3-4: Maximum Area of Slots and Holes
Pipe Dimension (inch)
5
6
8
10
12
38
Table 3-4 below. The listed values refer to the total area of the
Table 3-4. When the limits are exceeded, please
Max. Area of Slots and Holes (m
0.1
0.1
0.4
0.8
1.2
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Reference Manual