Search International and National Patent Collections

1. (WO1997036215) DEVICE IN A PROCESS SYSTEM FOR DETECTING EVENTS

Pub. No.:    WO/1997/036215    International Application No.:    PCT/US1997/003859
Publication Date: Oct 2, 1997 International Filing Date: Mar 13, 1997
IPC: G05B 13/02
G05B 21/02
G05B 23/02
Applicants: ROSEMOUNT INC.
Inventors: ERYUREK, Evren
WARRIOR, Jogesh
Title: DEVICE IN A PROCESS SYSTEM FOR DETECTING EVENTS
Abstract:
A process device (40) couples to a process control loop (6). The process device (40) receives process signals. A memory (48) in the process device (40) contains a nominal parameter value (78) and a rule (80). Computing circuitry (46) calculates a statistical parameter of the process signal and operates on the statistical parameter and the stored nominal value (78) based upon the stored rule (80) and responsively provides an event output based upon the operation. Output circuitry (42) provides an output in response to the event output.