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Patent US6434504 - Resistance based process control device diagnostics - Google PatenteSuche Bilder Maps Play YouTube News Gmail Drive Mehr » Erweiterte Patentsuche | Webprotokoll | Anmelden Erweiterte Patentsuche PatenteA device in a process control system includes an electrical element which has a resistance. Self-heating circuitry coupled to the element provides a self-heating current to determine the self-heating index (SHI) of the element. Diagnostic information about the electrical element is provided based upon...http://www.google.de/patents/US6434504?utm_source=gb-gplus-sharePatent US6434504 - Resistance based process control device diagnostics Ver�ffentlichungsnummerUS6434504 B1PublikationstypErteilung Anmeldenummer09/369,530 Ver�ffentlichungsdatum13. Aug. 2002Eingetragen6. Aug. 1999 Priorit�tsdatum7. Nov. 1996 ErfinderEvren EryurekSteven R. EsboldtGregory H. RomeUrspr�nglich Bevollm�chtigterRosemount Inc. US-Klassifikation702/130374/E15.1374/187Internationale KlassifikationG01K15/00G08C19/02G05B9/02G07C3/00 UnternehmensklassifikationG01K15/00G07C3/00G08C19/02G05B9/02 Europ�ische KlassifikationG07C 3/00G08C 19/02G01K 15/00G05B 9/02ReferenzenPatentzitate (106)Nichtpatentzitate (129) Referenziert von (25)Externe LinksUSPTO USPTO-Zuordnung EspacenetResistance based process control device diagnosticsUS 6434504 B1 Zusammenfassung A device in a process control system includes an electrical element which has a resistance. Self-heating circuitry coupled to the element provides a self-heating current to determine the self-heating index (SHI) of the element. Diagnostic information about the electrical element is provided based upon the self-heating index.
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