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Fisher®
Digital Valve Controller Improves Safety Integrity Level (SIL) Rating of
Safety Loop in Emergency Shutdown (ESD) Applications Marshalltown, Iowa (January 9, 2003) . . . . . Fisher Controls International LLC in conjunction with Bettis announced today that Exida.com has prepared a Failure Modes, Effects and Diagnostic Analysis (FMEDA) pertaining to use of a Fisher FIELDVUE® DVC6000 Series digital valve controller with a Bettis G or CBA Series actuator. The report shows that utilizing this valve control combination to perform partial stroke testing at the required frequency can reduce the Probability of Failure on Demand (PFD), which improves the Safety Integrity Level (SIL) rating of the safety loop. A Safety Instrumented Function (SIF) with a high SIL rating may require additional reliability measures such as redundant valves with additional piping and associated space requirements. However, use of the Fisher FIELDVUE controller for partial stroke testing of safety valves provides an opportunity to eliminate the need for redundancy, thereby requiring a smaller capital investment. It may also lower maintenance costs due to superior valve and instrument diagnostics capability. For more information on the Fisher FMEDA, contact your nearest Fisher sales office. For more information on the Bettis FMEDA, please visit the Bettis FieldSAFE Web Site. About Emerson Process Management Emerson Process Management (www.emersonprocess.com), an Emerson business, is a leader in helping businesses automate their production, processing and distribution components in the chemical, oil and gas, pulp and paper, power, food and beverage, pharmaceutical and other industries. A division of Emerson, Fisher Controls International LLC (www.emersonprocess.com/fisher) is a global leader in the design, manufacture and application of final control systems. Fisher’s technology and innovation in process control plays a key role in Emerson’s combining of superior products and technologies with industry-specific engineering, consulting, project management and maintenance services. Emerson brands include: PlantWeb®; Fisher®; Rosemount®; Intellution®; Micro Motion®; Westinghouse Process Control; DeltaV™; and AMS. About Emerson St. Louis-based Emerson (www.gotoemerson.com) is a global leader in bringing technology and engineering together to provide innovative solutions to customers in process control; electronics and telecommunications; industrial automation; heating, ventilating and air conditioning; and appliance and tools. Sales in fiscal 2001 were $15.5 billion. # # # Fisher, FisherExpress, FloPro, PlantWeb, Rosemount, Intellution, Micro Motion and DeltaV are marks of one of the Emerson Process Management family of companies. Other marks are the property of their respective owners.
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