PROCESS CONTROL SYSTEM HAVING ON-LINE AND OFF-LINE TEST CALCULATION FOR INDUSTRIAL PROCESS TRANSMITTERS

Title:

PROCESS CONTROL SYSTEM HAVING ON-LINE AND OFF-LINE TEST CALCULATION FOR INDUSTRIAL PROCESS TRANSMITTERS

Document Type and Number:

WIPO Patent Application WO/2010/039225

Kind Code:

A3

Abstract:

Methods and systems for assessing transmitter electronics in an industrial process control system comprise generating a process condition reference equation signal, a process condition approximation equation signal, and an accuracy output signal. The process condition reference equation signal is generated using a process condition reference equation and process control inputs. The process condition approximation equation signal is generated using a process condition approximation equation that approximates the reference equation using the process control inputs, and approximation equation coefficients based on the approximation equation and the process control inputs. The approximation equation signal is compared to the reference equation signal at a control room workstation such that the industrial process control system can be adjusted. In one embodiment, the approximation equation coefficients are adjusted and transmitted to process transmitter electronics over a control network. In another embodiment, a parameter of the industrial process control system, such as a primary element or transmitter, is adjusted.

Inventors:

DAVIS DALE SCOTT (US)
WIKLUND DAVID EUGENE (US)

Application Number:

PCT/US2009/005384

Publication Date:

July 08, 2010

Filing Date:

September 30, 2009

Export Citation:

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Assignee:

ROSEMOUNT INC (US)
DAVIS DALE SCOTT (US)
WIKLUND DAVID EUGENE (US)

International Classes:

G05B19/042; G05B19/418

Domestic Patent References:

WO1991005293A1

1991-04-18

Foreign References:

US20050000289A1	2005-01-06
US20030109951A1	2003-06-12
US20030144746A1	2003-07-31

Other References: