Heated ion chamber detector for a dynamoelectric machine

G - Physics – 01 – N

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G01N 23/00 (2006.01) G01N 27/70 (2006.01)

Patent

CA 1079416

HEATED ION CHAMBER DETECTOR FOR A DYNAMOELECTRIC MACHINE Abstract of the Disclosure An improved detector apparatus is provided in combination with a gas cooled dynamoelectric machine for detecting the presence of pyrolysate products in the machine gas coolant indicative of localized overheating of certain dynamoelectric machine parts. The detector apparatus is of the type which analyzes an ionized gas sample by measuring the current flow in the gas sample. A decrease in current flow is indicative of the presence of submicron particulates. The present invention resides in heating the gaseous sample to eliminate more volatile submicron particulates so that the output signal from the detector apparatus is indicative only of the presence of pyrolysate products resulting from the localized overheating of certain dynamoelectric machine parts.

287811

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