ELECTROMAGNETIC FLOWMETER

摘要

An electromagnetic flowmeter comprising a conduit of nonmagnetic material for passing therethrough a liquid to be measured, a permanent magnet of cylindrical shape mounted on the outer circumferential surface of said conduit in concentric relationship, two radial openings formed in two positions diametrically opposed to each other on said permanent magnet in substantially the central portion axially of the magnet, two electrodes mounted in said two radial openings respectively, and external magnetic field shield means mounted around said permanent magnet in enclosing relationship.