Method and apparatus for non-destructively determining...

Details Method and apparatus for non-destructively determining... Method and apparatus for non-destructively determining...

G - Physics

01

N

324/48

G01N 27/02 (2006.01) G01N 33/12 (2006.01)

Patent

CA 1211507

Abstract A test apparatus is provided for measuring the proportion of at least one constituent in a sample of material, which constituent bears a known relationship to the electrical conductivity of the sample. The test apparatus comprises a sensor including both a receptacle for receiving a sample of material and a field producing coil for producing an electromagnetic field within the receptacle. The coil is also designed confining said electromagnetic field to a predetermined, fixed volume within the receptacle and for producing a substantially constant magnitude electromagnetic field throughout this predetermined, fixed volume. A monitoring circuit is coupled with the sensor and is responsive thereto for producing an output signal which bears a predetermined relationship with the real impedance of the sensor and therefore with the conductivity of the sample.

422531

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