Foundation fieldbus in hazardous areas

Why and how Saudi Aramco plans to migrate from non-incendive to intrinsically safe.

CG1511 Feat2

At Saudi Aramco, the protection scheme non-incendive energy limited (Ex nL) is used for Foundation fieldbus (FF) spurs to allow for "live maintenance." The Ex nL was withdrawn from the IEC 60079-151, and replaced with a new intrinsically safe protection method (Ex ic) per the IEC 60079-112. Considering that Ex nL-certified FF devices are gradually diminishing, appropriate studies, solutions and mitigation plans were explored to ensure safety and reliability is maintained with the existing installed base. For grassroots projects, the situation is a bit more complicated because end users have to correctly interpret the new international standards addressing the…

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Beginner's guide to differential pressure level transmitters

 LevelTransmittersGuideUsing faulty measurements can fool even the best control system. To avoid costly mistakes it is necessary to understand the measurement technique and its limitations. This guide focuses on differential pressure level measurement and three different techniques used to calibrate pressure level transmitters. Download it now.

Protecting industrial control systems from cyber attacks

CG1509-CyberSecurity Cyber attacks on industrial environments can cost millions, affect thousands of people and potentially claim lives. We have curated six important articles designed to provide a critical overview and practical guidance on protecting your industrial networks and industrial control systems. Read them now.

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Advanced control for boiler drum level?

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By Béla Lipták

Q: I read some papers regarding boiler drum level control and almost all mention that, for better performance, we should go for fuzzy logic controllers or model-based controllers instead of traditional PID controllers. However, in those papers, the results are obtained by simulating through Matlab.

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