For many fluid-mass-rate-of-flow metering situations, a measure of the fluid's density-velocity product is required. The density-velocity (pv) product is multiplied by an effective conduit cross-sectional area to yield the mass-rate-of-flow. The area multiplication is accomplished by simply changing the scale of the pv-product indicator. The purpose of this paper is to show how a magnetically-driven vibrating reed can be used to measure either the pv product of a fluid or its mass-rate-of-flow through a conduit. The proposed meter differs from the rotating-vane mass-rate-of-flow meters in that it operates on a transverse rather than angular momentum exchange. (Author)
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