Hot-wire mass flowmeter

Details Hot-wire mass flowmeter Hot-wire mass flowmeter

1997-01-22

2000-03-14

Patel, Harshad

Measuring and testing

Volume or rate of flow

By measuring transit time of tracer or tag

7320414, G01F 168

Patent

active

060357266

ABSTRACT:
A mass flowmeter including a resistive wire adapted to be placed across the path of a fluid whose flow rate is to be measured, a controller unit for applying electrical energy to the wire, and a processor unit for deducing the mass flow rate of the fluid from variations in the temperature of the fluid. In one embodiment, the controller unit applies current pulses to the wire during given periods and the processor unit determines the rate at which the wire cools between pulses. The invention is applicable to measuring any mass flow rate in various environments.

REFERENCES:
patent: 3603147 (1971-09-01), Dorman
patent: 3719083 (1973-03-01), Morris et al.
patent: 4335605 (1982-06-01), Boyd
patent: 4621929 (1986-11-01), Phillips
patent: 4888987 (1989-12-01), Zhang
patent: 5004913 (1991-04-01), Kleinerman
patent: 5493100 (1996-02-01), Renger
patent: 5661236 (1997-08-01), Thompson
patent: 5710380 (1998-01-01), Talley et al.

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