Flow meter for registration of pulsating liquid flows

Details Flow meter for registration of pulsating liquid flows Flow meter for registration of pulsating liquid flows

G - Physics

01

F

73/69

G01F 1/56 (2006.01) G01F 1/38 (2006.01)

Patent

CA 1122436

ABSTRACT OF THE DISCLOSURE A flow meter for the registration of pulsating liquid flows, and preferably for registration of small blood flows. The flow is measured by means of a differential pressure measurement over a first flow resistance (I) having a resistance R1. The flow meter includes a high pressure part in the form of a flow resistance (II) and a lower pressure part in the form of a flow resistance (III), and these have the resistances R2 and R3, respectively. The resistances R1, R2 and R3 are selected so as to adjust the pressures on each side of the differential pressure meter in phase with each other independent of the frequency of the flow pulsations. Each resistance has a corresponding modulus of elasticity, and the resistances and moduli of elasticity are so related as to fulfill certain formulas.

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