Device in a process system for detecting events

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39518302, 702 33, 702182, 706 10, 706 23, G05B 1302

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06017143&

ABSTRACT:
A process device couples to a process control loop. The process device receives process signals. A memory in the process device contains a nominal parameter value and a rule. Computing circuitry calculates a statistical parameter of the process signal and operates on the statistical parameter and the stored nominal value based upon the stored rule and responsively provides an event output based upon the operation. Output circuitry provides an output in response to the event output.

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