Source: http://www.google.ca/patents/US6434504
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Patent US6434504 - Resistance based process control device diagnostics - Google Patents
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...http://www.google.ca/patents/US6434504?utm_source=gb-gplus-sharePatent US6434504 - Resistance based process control device diagnostics
Publication number US6434504 B1
Application number US 09/369,530
Publication number 09369530, 369530, US 6434504 B1, US 6434504B1, US-B1-6434504, US6434504 B1, US6434504B1
Patent Citations (211), Non-Patent Citations (129), Referenced by (73), Classifications (15), Legal Events (5)
US 6434504 B1
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U.S. Classification 702/130, 374/E15.001, 374/187
International Classification G01K15/00, G08C19/02, G05B9/02, G07C3/00
Cooperative Classification G07C3/00, G05B9/02, G08C19/02, G01K15/00
European Classification G07C3/00, G08C19/02, G01K15/00, G05B9/02