Streaming current detector with head-creating passageway and flu

Details Streaming current detector with head-creating passageway and flu Streaming current detector with head-creating passageway and flu

1990-08-28

1993-04-13

Dawson, Robert A.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

7386462, 210 961, 210140, 210143, 2101981, 210709, 210746, 324 711, 324453, B01D 3500, B01D 3703, G01N 2760

Patent

active

052020169

ABSTRACT:
A device for detecting and monitoring the charge condition of finely divided solid charged particles in a fluid-flow is so devised as to accept the continuous and full volumetric flow of the fluid and to automatically and repeatedly sample and measure the charge condition. The full flow is accommodated without restriction in a passageway which intersects a bore wherein a streaming current detector (SCD), located below the passageway, is caused to cyclically sample and measure the charged-particle content of the flow; and at a passageway location downstream from the point point of cyclical sampling a head-creating formation assures that the fluid level will be raised to maintain a filled condition of the sampling bore. The device is further illustratively disclosed in use in a fluid-treatment system, wherein the SCD produces a signal to control flocculant added to the full flow of the fluid.

REFERENCES:
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patent: 4449101 (1984-05-01), Canzoneri et al.
patent: 4535285 (1985-08-01), Evans et al.
patent: 4769608 (1988-09-01), Bryant
patent: 4855061 (1989-08-01), Martin

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