Fluid flowmeter

Details Fluid flowmeter Fluid flowmeter

1975-12-30

1977-08-16

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Proportional

73204, G01F 168, G01F 500

Patent

active

040417573

ABSTRACT:
Apparatus for measuring the flow of fluid through a main supply line having a restrictive element therein to develop a pressure drop. A shunt fluid flow path bypasses this element. The shunt path includes a conduit having a first electrically heated portion and an unheated portion, each portion respectively having a temperature sensing device associated therewith. Means are provided for varying the voltage supplied to an electrical heater for the first conduit portion to maintain a constant temperature difference between the temperature sensing devices, the amount of voltage supplied being a function of the characteristics of fluid flow through the main supply line.

REFERENCES:
patent: 2446283 (1948-08-01), Hulsberg
patent: 2729976 (1956-01-01), Laub
patent: 2994222 (1961-08-01), Laub
patent: 3443434 (1969-05-01), Baker et al.
patent: 3559482 (1971-02-01), Baker et al.

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