Measuring and testing – Volume or rate of flow – Proportional
Patent
1996-09-27
1998-05-12
Dombroske, George M.
Measuring and testing
Volume or rate of flow
Proportional
G01F 500
Patent
active
057508925
ABSTRACT:
A laminar flow element for use in flow metering devices has a laminar flow element plug with an upstream end and a downstream end and a linear extent between the upstream end and the downstream end, the laminar flow element plug configured to be positioned within a base cavity with the upstream end oriented toward the direction of flow, and sensor taps through walls of the base cavity positioned inboard of the laminar flow element plug so that entrance effect is eliminated, error due to flow cross-sectional area differential is eliminated, and orifice effect is minimized, to produce a laminar flow with linear pressure drop across the sensor taps as a function of flow rate. Coaxial laminar flow guides are fixed coaxially about at least a portion of the length of the laminar flow element plug to increase the number of flow passages to enable linear measurements of higher flow rates.
REFERENCES:
patent: 4100801 (1978-07-01), LeMay
patent: 4800754 (1989-01-01), Korpi
patent: 4961344 (1990-10-01), Rodder
patent: 5295394 (1994-03-01), Suzuki
patent: 5332005 (1994-07-01), Baan
patent: 5357793 (1994-10-01), Jouwsma
Alvesteffer William J.
Huang Yufeng
Outlaw Ronald A.
Artis Jewel V.
Dombroske George M.
Teledyne Industries Inc.
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