Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Viscosity
Patent
1977-09-06
1978-10-10
Queisser, Richard C.
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Viscosity
73205L, G01N 1104, G01F 136
Patent
active
041189736
ABSTRACT:
An apparatus for measuring the flow rate and/or viscous 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 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 viscosities of an extensive variety of fluids in a consistent and deducible manner with minimal pressure loss.
REFERENCES:
patent: 2212186 (1940-08-01), Ricardo et al.
patent: 3071001 (1963-01-01), Goldsmith
patent: 3071160 (1963-01-01), Weichbrod
patent: 3220256 (1965-11-01), Weichbrod
patent: 3349619 (1967-10-01), Millar
patent: 3677069 (1972-07-01), Rubin et al.
patent: 3838598 (1974-10-01), Tompkins
patent: 3952577 (1976-04-01), Hayes et al.
Hayes William F.
Tanney John W.
Tucker Helen G.
Canadian Patents & Development Limited
Lemon Francis W.
Queisser Richard C.
Roskos Joseph W.
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