API MPMS 22.2 Manual of Petroleum Measurement Standards Chapter 22Testing Protocol Section 2Differential Pressure Flow Measurement Devices
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API MPMS 22.2 Document Information:
Title
Manual of Petroleum Measurement Standards Chapter 22Testing Protocol Section 2Differential Pressure Flow Measurement Devices
American Petroleum Institute
Publication Date:
Aug 1, 2005
Scope:
The testing protocol is limited to single-phase Newtonian fluid flow,
and no consideration is given
to pulsation effects. Further revisions of this document may include
the testing of such meters in
wet gas or multi-phase service and the effects of pulsation. This
standard does not address testing
protocols of those devices that operate on the principle of critical
or choked flow condition of
fluids.
The testing protocol covers any flow meter operating on the principle
of a local change in flow
velocity, caused by the meter geometry, giving a corresponding change
of pressure between two
reference locations. There are several types of differential pressure
meters available to industry.
It is the purpose of this standard to illustrate the range of
applications of each meter and not to
endorse any specific meter. The basic principle of operation of the
flow measuring devices follows
the physical laws relating to the conservation of energy and mass for
the fluid flows through the
device.
Any existing or later developed API MPMS document addressing a
specific type or design of
differential pressure flow measuring device will supersede the
requirements of this document. An
example of one such existing standard is API Manual of Petroleum
Measurement Standards, Chapter
14.3 "Concentric, Square-Edged Orifice Meters."
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