Device in a process system for detecting events
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United States of America Patent
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May 28, 2002
Issued Date -
N/A
app pub date -
May 3, 1999
filing date -
Mar 28, 1996
priority date (Note) -
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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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