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Posts Tagged ‘closed-loop control’

How Good is Your Level Control?

Posted in Control Strategies, Process Optimization, Variability Management on Monday, August 25th, 2014. 4 comments so far
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So asks Emerson’s Lou Heavner in a thought-provoking post in the DeltaV track of the Emerson Exchange 365 community. Lou opens: Is it good enough? Is it too good? Do you even know? Should you care? Well yes, you probably should care. Most level processes are non-self-regulating or integrating processes. Everything you probably learned about […]

Major Difference between Foundation Fieldbus and HART Protocols

Posted in Final Control Element, Foundation Fieldbus, Technologies on Tuesday, September 10th, 2013. 7 comments so far
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Over in the peer-to-peer Emerson Exchange 365 community, a question was asked in the Valve Controllers & Positioners track: Major difference between FOUNDATION Fieldbus and HART Protocol I would like to know the major pros and cons of Fieldbus over HART. I was only aware of the fact that HART is analog communication and Fieldbus […]

Process Control with Wireless Devices

Posted in Process Optimization, Wireless on Tuesday, February 19th, 2013. No comments yet
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Emerson’s Chris Womack discusses process control with IEC 62591 wireless devices in today’s guest post. Using wireless devices in process control still isn’t that common, but it’s going to be. With its quick and easy installation, wireless technology is often used for providing additional measurement data that’s not essential to control. But the flexibility of […]

Wireless Device-Based Control Loops

Posted in Technologies, Wireless on Thursday, April 5th, 2012. One comment so far
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ControlGlobal.com has a great article, Addressing Control Applications Using Wireless Devices—How Wired and Wireless Transmitter Installations Differ in Closed-Loop Control Applications and What Changes Are Required in the PID, by Emerson’s Terry Blevins, Mark Nixon, and Marty Zielinski. In the article, they describe how the IEC 62591 WirelessHART standard provides communications modes to support wireless […]