Process and apparatus for determining the concentration of a sus

Details Process and apparatus for determining the concentration of a sus Process and apparatus for determining the concentration of a sus

1975-03-24

1976-09-14

Dixon, Harold A.

Radiant energy

Radiation tracer methods

324 38, G01R 3312, G01T 1161

Patent

active

039808840

ABSTRACT:
A representative reading for the concentration of a suspension of luminous and magnetizable particles is provided in every case, even when luminous but non-magnetizable particles are also present. That is, the presence of non-magnetizable luminous particles in the suspension have no effect on the determination. A rotating wheel-like member has its lowermost portions immersed in a supply of the magnetic particle suspension in a fluid carrier. The circumferential periphery includes a permanent magnet having a gap extending continuously around the periphery and covered over by a plastic rim. As the wheel-like member rotates, the magnetic particle suspension forms a bead along the magnet gap. Ultra violet radiation directed onto the bead causes the magnetic particles to fluoresce and the degree of fluorescence is measured by photosensitive means.

REFERENCES:
patent: 2267999 (1941-12-01), Switzer
patent: 3402349 (1968-09-01), Parker
patent: 3573979 (1971-04-01), Honjo

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