Rotameter with remote read-out device

Details Rotameter with remote read-out device Rotameter with remote read-out device

1991-03-29

1992-01-14

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Using differential pressure

G01F 124

Patent

active

050799614

ABSTRACT:
A flowmeter comprises a vertically disposed tapered flow passage with cross sectional area increasing from the bottom inlet to the top outlet of the tapered flow passage, a flow obstructing member disposed within the tapered flow passage in a suspended arrangement, an elongated member with one extremity affixed to the flow obstructing member and axially extending through the tapered flow passage and into an elongated cavity extending from one extremity of the tapered flow passage, a tapered first electrical coil disposed coaxially and exteriorly to the tapered flow passage, and a second electrical coil disposed coaxially and exteriorly to the elongated cavity; wherein the flow rate of fluid moving through the tapered flow passage is determined as a function of degree of mutual electrical induction between the two electrical coils.

REFERENCES:
patent: 3128625 (1964-04-01), Heineman
patent: 3495456 (1970-02-01), Ohno
patent: 4523480 (1985-06-01), Inoue

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