Flowmeter

Details Flowmeter Flowmeter

1996-11-12

1999-01-19

Dombroske, George M.

Measuring and testing

Volume or rate of flow

Thermal type

G01F 168

Patent

active

058615563

ABSTRACT:
A plurality of flow velocity sensors are vertically installed in line at different positions in the same cross section in a gas flow passage in a pipe. Detection signals from the flow velocity sensors are inputted to a mean flow velocity computing unit which calculates a mean value of flow velocity measurements. The mean flow rate calculated at the mean flow velocity computing unit is converted into a flow rate by a flow rate computing unit to be displayed by a display. Regardless of flow velocity distribution in the pipe, which may change due to differences in the pipe shape, flow rates are accurately measured. As a result, flow rates are accurately measured over a wide range.

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ISA Transactions, vol. 28, No. 4, 1987, Research Triangle Park, NC, D. Ginesi: "A Review of Insertion Type Flowmetering Devices", pp. 1-8.
Patent Abstracts of Japan, JP 01 118721 A, Nakanishi Mikima: "Flow Rate Measuring Instrument".
I&CS Instruments and Control Systems, vol. 66, No. 3, Mar. 1993, Radnor, Pennsylvania, Wayne Labs: "Thermal Mass Flowmeter Works in CEMS Applications".

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