Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Content or effect of a constituent of a liquid mixture
Patent
1998-09-09
2000-09-26
Larkin, Daniel S.
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Content or effect of a constituent of a liquid mixture
324439, 324449, G01N 1506
Patent
active
061229563
ABSTRACT:
An on-line sensor for measuring volumetric concentration or percent solids of a slurry flowing in a pipeline includes a section of composite or dielectric pipe connected in the pipeline, with a plurality of sensing electrodes mounted around the periphery of the composite pipe having their inner ends in contact with the slurry flowing therethrough. Preferably the inner ends of the sensor electrodes are flush with the inner pipe wall surface. An electrical signal is applied to a bridge circuit that is connected to successive pairs of sensor electrodes around the periphery of the sensor and the ratios of the local conductivity between adjacent pairs of sensing electrodes to the conductivity between a pair of reference electrodes in contact with the liquid are measured and are used to compute the local slurry concentration between adjacent pairs of sensing electrodes. A computer algorithm is used to average the local slurry concentration and produce an output signal representing the average solids volumetric concentration in the pipeline.
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Fu Feng
Klausner James F.
Mei Renwei
Clarke Dennis P.
Larkin Daniel S.
University of Florida
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