Unitary electromagnetic flowmeter with sealed coils

Details Unitary electromagnetic flowmeter with sealed coils Unitary electromagnetic flowmeter with sealed coils

1980-08-01

1982-11-16

Ruehl, Charles A.

Measuring and testing

Volume or rate of flow

By measuring electrical or magnetic properties

G01F 158

Patent

active

043589634

ABSTRACT:
A compact electromagnetic flowmeter unit interposable between the flanged ends of upstream and downstream line pipes for metering fluid passing through the line, the unit being subject to compression by the flanged pipe ends to effect a fluid seal. The flowmeter is constituted by a non-magnetic metal spool of high strength whose inner surface is protectively covered by an insulating liner to provide a flow conduit for the fluid. Surrounding the spool and concentric therewith is a cylindrical housing fabricated of ferromagnetic material, the housing being formed by complementary half-pieces which include end plates that join the corresponding ends of the spool to define an annular inner chamber. Mounted adjacent the inner surface of the half-pieces at diametrically-opposed positions along a coil axis normal to the longitudinal flow axis are relatively thin coils which are shaped to conform to this surface to define electromagnets. Electrodes are supported on the spool at diametrically-opposed positions along an electrode axis at right angles to the coil axis. The inner chamber is filled with a potting compound to seal in the electromagnets and the electrodes.

REFERENCES:
patent: 3695104 (1972-10-01), Mannherz et al.
patent: 3824856 (1974-07-01), Yard

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