On-line device testing block integrated into a process...

Data processing: measuring – calibrating – or testing – Testing system

Reexamination Certificate

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C714S048000, C340S514000

Reexamination Certificate

active

06898542

ABSTRACT:
A process control or safety system within a process plant uses one or more testing blocks to effect the timely and safe operation of on-line testing routines within field devices, such as valves, used in the process control or safety system. These testing blocks, which are easy to implement and to place in the process control or safety system, enable the periodic or on-demand testing of field devices to be integrated into the normal and on-going operation of the process control or safety system without causing scheduling or connection problems and without the need to rely on maintenance or other personnel, thereby providing better monitoring of the operational status of the field devices used within the process control and safety systems. This functionality is especially important in safety systems, in which it is desirable to timely monitor or assess the operational status of the devices used to shut the process down when an unsafe condition arises, so as to assure that initiation of a shut down by the safety system actually results in a shut down of the system.

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U.S. Appl. No. 10/117,007 entitled “System and Method to Manually Initiate an Emergency Shutdown Test and Collect Diagnostic Data in a Process Control Environment,” which was filed on Apr. 5, 2002.
U.S. Appl. No. 09/707,580 entitled “Integrated Alarm Display in a Process Control Network,” which was filed on Nov. 7, 2000.
U.S. Appl. No. 10/116,940 entitled “Control Device Test System with a Remote Switch Activation,” which was filed on Apr. 5, 2002.
Search Report under Section 17(5) issued in GB 0407443.1 applicaton by the United Kingdom Patent Office on Aug. 5, 2004.

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