Archive for the ‘Power & Grounding’ Category

Monitoring Control Loops for Leakage Current and Increased Resistance

Posted in Power & Grounding, Pressure on Monday, November 24th, 2014. 5 comments so far
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Control systems rely on the signals coming back from measurement devices to perform control operations and provide feedback to operators. Unfortunately the signal from these devices can be impacted by several conditions. These conditions include damage and corrosion, water or condensation in the junction box or terminal compartment, power supply deterioration and grounds or electrical […]

Getting the Power and Grounding Right

Posted in Power & Grounding, Support Services on Thursday, June 27th, 2013. 4 comments so far
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The finest instrumentation, final control, and control systems won’t deliver the performance you require if the power and grounding are not right. I caught up with Emerson’s Stephan Kerrebijn who highlighted its importance as the basis for a reliable and proper working system. This is particularly important with all the digital communication busses to get […]

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Wireless Devices in Hazardous Locations

Posted in Power & Grounding, Wireless on Monday, November 29th, 2010. No comments yet
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My ControlGlobal – The Great Kanduski: Best Practices in Industrial Networking RSS feed alerted me to a post, Antennas – Wireless Achilles Heel? As the title implies, it raises the question about antennas on wireless devices when installed in hazardous areas. The post opens: While attending the WirelessHART seminar a while back we had a […]

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A Look at Electronic Marshalling Reliability

Posted in Electrical Reliability, Power & Grounding on Thursday, April 15th, 2010. No comments yet
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You may or may not have heard about electronic marshalling. It’s a new development with the DeltaV automation system. Emerson’s DeltaV team has developed a new whitepaper, Electronic Marshalling Robustness, to describe this technology and its impact on overall system availability. If you’re not familiar with DCS marshalling panels to see the traditional method of […]

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Ridding those Pesky Ground Loops and EMI Problems

Posted in Power & Grounding, Wireless on Thursday, March 4th, 2010. No comments yet
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From my RSS feed, an Automation World article, Wireless Eliminates Ground Loop Noise, caught my attention. It brought back memories of being a systems engineer on offshore oil and gas production platforms. These platforms are huge steel structures and as such, have a nice solid ground. These structures also act as antennas for electromagnetic interference […]

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