Patent ID: 9274041
Filing Date: 2016-03-01
CPC Classification: G01N

Claim Text:
1. A particle counter and classification system comprising: a detector subsystem configured to detect and determine the size of particles above a predetermined size in a fluid in a sample cell; a first stage magnetometer sensor subsystem for the fluid tuned to detect and determine the size of ferrous and/or conducting particles in said fluid above said predetermined size; a second stage magnetometer sensor subsystem for said fluid tuned to detect the overall ferrous particle content of the fluid; and a processor subsystem, responsive to the detector subsystem, the first stage magnetometer sensor subsystem, and the second stage magnetometer sensor subsystem, configured to calculate and report the number of particles in the fluid in a plurality of size ranges, the number of ferrous and/or conducting particles in said size ranges, and the overall ferrous content of the fluid, and further configured to classify individual particles detected by said detector subsystem and to reclassify said individual particles based on feedback information from said first stage magnetometer sensor subsystem.