G - Physics – 01 – N
Patent
G - Physics
01
N
73/125, 73/126
G01N 11/04 (2006.01) G01F 1/36 (2006.01) G01F 1/42 (2006.01) G01N 11/08 (2006.01)
Patent
CA 1063834
TITLE AN APPARATUS FOR MEASURING THE FLOW RATE AND/OR VISCOSITY OF A FLUID INVENTORS Helen G. Tucker John W. Tanney William F. Hayes ABSTRACT OF DISCLOSURE An apparatus for measuring the flow rate and/or vis- cous characteristics of a fluid comprises a casing, having a fluid passage which is elongated in cross-section with two parallel, opposed sides and has a flared entry portion leading to a portion of constant cross-section. Formulae are given, using substantially pure water as a standard, from which a suitable geometry for the flared entry portion can be deduced. Fluid pressure detectors are provided for detecting a fluid pressure differential in the fluid passage such that the or each fluid characteristic to be measured may be deduced from the pressure differential when laminar flow is maintained in the passage. When laminar flow is maintained the apparatus is capable of measuring a wide range of flow rates and/or vis- cosities of an extensive variety of fluids in a consistent and deducible manner with minimal pressure loss.
285998
Hayes William F.
Tanney John W.
Tucker Helen G.
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