fabricated to proper dimensions and tolerances to assure that the flow pattern through
the meter is undisturbed by piping configuration.
The table of recommended dimensions for “PT” Meter Tubes takes into account piping
design, where swirls and disturbances are introduced by fittings, valves, etc., adjacent to
the meter tube section. The recommended lengths shown (with a straightening vane) are
for the maximum flow disturbance conditions. The illustrations show proper positioning of
straightening vanes.
The vanes may be eliminated if adequate straight pipe exists upstream and downstream.
For pipe lengths not requiring vanes, see Daniel Catalog Section “D”, AGA Report No.3,
the ASME Power Test Code, or API Standard 2534.
Figure 3-2: Meter tube and PT Meter flanges alignment
Meter tubes with straightening vanes
Figure 3-3: Meter Tubes with Straightening Vanes
Installation and maintenance instructions
Installation and initial operation
3-9008-011
October 2019
Installation and maintenance instructions
27
Summary of Contents for Daniel PT
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