Patent ID: 9651523
Date: 2017-05-16
CPC Classifications: B01D,C02F,G01N,G01R

Claim:
1. A system for measuring a concentration of magnetic ballast in a slurry comprising: a detection conduit surrounded by a first detection coil, the detection conduit configured to receive the slurry, and the first detection coil comprising a first section and a second section both positioned coaxially along the detection conduit; a reference conduit surrounded by a first reference coil; a second detection coil surrounding the detection conduit and positioned between the first and second sections of the first detection coil along a common axis of the detection conduit; a second reference coil surrounding the reference conduit and positioned in proximity to the first reference coil, wherein the first and second detection coils and the first and second reference coils are positioned on a common plane of symmetry perpendicular to each other; an AC power source configured to generate a magnetic field in the first detection coil and the first reference coil; and a measurement device configured to measure a differential induced voltage between the second detection coil and the second reference coil to determine the concentration of the magnetic ballast in the slurry based on the measured differential induced voltage.