| 摘要 |
An element of an averag-ing orifice plate fluid flow meter for measuring the volumetric rate of fluid flow in a conduit having an interior cir-cumference for carrying a flow of fluid comprising, a planar flow impedance plate for disposition transversely across the interior of the conduit and perpen-dicular to the fluid flow, a plurality of spaced apart orifices disposed in the plate where the profile of each orifice is a segment of a circle on an arc where the arc is coincident with a portion of the in-terior circumference of the conduit.
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