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Providing Operators Process Control Valve Position Feedback
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Jim Cahill
10 Jan 2014
Wireless
HART communications
Riyaz Ali
IEC 62591
WirelessHART
HART pass-through
valve positioner
Foundation Fieldbus
Final Control Element
digital valve controller
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Providing Operators Process Control Valve Position Feedback
Control systems provide signals to control valves to regulate their position per the requirements of the control strategy. It is good engineering practice, especially for critical control valves to have valve travel feedback from independent devices such as position transmitters, limit switches, or positioner output feedback. Emerson’s Riyaz Ali, whom you may recall from earlier […]
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