Flowmeter

Details Flowmeter Flowmeter

1984-08-09

1986-06-03

Woodiel, Donald O.

Measuring and testing

Volume or rate of flow

Using differential pressure

G01P 516

Patent

active

045922390

ABSTRACT:
A flowmeter having an elongate probe (2) is insertable into a stream of fluid flowing within a pipe (4) to extend across the stream. The probe (2) includes an internal chamber (10) to extend across the stream, an upstream facing surface (12) against which the said flowing fluid can impinge, and a plurality of impact ports (14) extending through said upstream facing surface to the internal chamber (10). These impact ports (14) are spaced along said upstream facing surface (12) to sense the impact pressure of the fluid at different transverse points across the pipe (4). The impact ports (14) are dimensioned to restrict flow within the chamber (10) so that the pressure within the chamber (10) represents the average impact pressure across the flow profile. A first conduit (18) leads from the chamber (10) to the high pressure port (20) of means for measuring differential pressure, and a second conduit (22) leads from the flow pipe wall downstream of the flowmeter to the low pressure port of the differential pressure measuring device.

REFERENCES:
patent: 1119581 (1914-12-01), Dodge
patent: 1250238 (1917-12-01), Spitzglass
patent: 3581565 (1968-06-01), Dieterich
patent: 3782407 (1974-01-01), Blackwell

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