Measuring and testing – Volume or rate of flow – Proportional
Patent
1987-10-07
1989-01-31
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
Proportional
138 40, 138 42, 138 43, 138 44, G01E 500, F15D 114
Patent
active
048007544
ABSTRACT:
A fluid bypass type flowmeter has a main passage which is configurable to various effective diameters by selectably adding pre-defined additional cross-sections comprised of an adjustable laminar flow element located within a bore for fine adjustm=ent of the full-scale range of the flowmeter, and an adjustable restriction secondary passage for crude adjustments of the range of the meter. With adjustment of the flowmeter, all or a selected portion of the flow to be measured can be diverted through the secondary passage, where a flow measuring device is located, thereby allowing the flowmeter to operate at or near its full scale and thereby improving the accuracy of the flowmeter over various ranges of flow rate. A laminar flow element is employed in the main passage so that the pressure drop across the element varies linearly with flow rate and, accordingly, the ratio of diverted to un-diverted flow is a constant ratio even though the flow rate varies. The secondary passage adjustable restriction is also designed to give laminar flow to obtain linearity over flow rate variations.
REFERENCES:
patent: 3240233 (1966-03-01), Johnston
patent: 4522058 (1985-06-01), Ewing
Goldstein Herbert
Harrison Michael L.
Sierra Instruments, Inc.
LandOfFree
Wide-range, adjustable flowmeter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wide-range, adjustable flowmeter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wide-range, adjustable flowmeter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-171826