Flow Control - Jan 2012
Figure 5 By monitoring valve performance over time plant personnel discovered that this control valve was showing signs of fatigue Hysteresis had quadrupled in one month and positioning accuracy was poor only of the process that the valve was controlling but also of another process that was a slave of that loop Control valves are essential to a plants overall performance By tapping the information todays diagnostic tools can provide operations personnel can help ensure their valves perform optimally and take a significant step in maximizing plant performance For more information about valve diagnostics and digital valve positioners see Evolution of Valve Diagnostics Delivering Enhanced Process Control Under Increased Scrutiny Flow Control August 2011 and Mission Possible Analog to Digital Valve Upgrades Flow Control June 2011 You can find these articles at FlowControlNetowork com FC Sandro Esposito is global marketing manager at GE Energy for digital and SMART products in the companys Masoneilan product line A 17 year veteran of the control valve and process automation industries Mr Esposito has extensive experience with control valve diagnostics and system integration and has been granted several patents related to digital valve positioners He graduated from Ahuntsic College in Montreal with a degree in Instrumentation and Process Controls Mr Esposito can be reached at sandro esposito@ ge com or 281 671 1683 www ge energy com case study Circle 16 or Request Info Instantly at www FlowControlNetwork com 24 January 2012 Flow Control
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