Patent ID: 6736978
Filing Date: 2004-05-18
Classification: G01F,G01N,Y10S

Abstract:
A method of monitoring analyte flowing in fluid streams comprising the steps of:providing a giant magnetoresistive sensor having at least one sensing element which produces electrical output signals that vary dependent on changes in the magnetic field proximate the sensing element; providing a stream including the analyte, the stream having a magnetic property dependent on the concentration and distribution of analyte therein; flowing the stream past the giant magnetoresistive sensor in sufficiently close proximity to cause the magnetic properties of the stream to produce electrical output signals from the giant magnetoresistive sensor; and monitoring the electrical signals produced by the giant magnetoresistive sensor as an indicator of at least one of an analyte concentration, an analyte distribution, and an analyte magnetic property in the stream flowing past the giant magnetoresistive sensor.