State of Technology Report: I/O Systems

Download this free technology report and get the latest information from connectors and cordsets to intrinsic safety and power supplies.

Control
CG1503 IO Tech Report thumb

In this exclusive, 35-page eBook from the editors of Control you will find an exclusive collection of our best technology trends, back-to-basics tutorials and application stories on all things I/O. The technology report is divided in three section: Trends in Technology Back to Basics Technology in Action The entire eBook gives you the latest information from connectors and cordsets to intrinsic safety and power supplies, getting you up to speed fast on the latest developments in I/O Systems. Control's publisher Keith Larson, reviews obstacles industry professionals face when solving I/O problems and says that incremental thinking won't help solve automation challenges.

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Timeless Resources

Beginner's Guide to Differential Pressure Level Transmitters

By David W. Spitzer

The importance of level measurement cannot be overstated. Incorrect or inappropriate measurements can cause  levels in vessels to be excessively higher or lower than their measured values. Low levels can cause pumping problems and damage the pump, while high levels can cause vessels to overflow and potentially create safety and environmental problems. Vessels operating at incorrect intermediate levels can result in poor operating conditions and affect the accounting of material. Learn more.

Controllers: Direct vs. Reverse-Acting Control

By Bela Liptak

Valve failure position is determined by safety considerations. If, in case of failure, you want your column to go on full reflux, your selection where the reflux control valve is fail-open, and net overhead control valve is fail-close, is right. Assuming that the valve actuators are spring-operated pneumatic ones, and assuming that you define "failure" as the loss of air supply, the spring will act to open a fail-open (FO) valve and to close a fail-closed (FC) valve, regardless what the controller actions are. Read more.

Voices: Ask The Experts

Linear or Equal Percentage Valves: When Should I Use Which?

Since the goal is to control loop stability, the choice that gives you the best chance of that is the one to make.

By Bela Liptak

Question: Is there some general rule on when we should use =% (equal percentage) and when linear control valves? I know that the determining factor is the inherent flow characteristic, the flow vs. lift at constant pressure drop, or something like that. I do not know what this means, because…

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Control Talk Blog

Succinct Field Instrumentation Guidance for the Automation Generalist Tips

The amount of information that the generalist needs to know is staggering. The knowledge needed is buried in a hundred thousand pages of publications and presentations that are oriented toward the specialist. Here I provide the essentials for the best field instrumentation system. The emphasis in this guidance is on performance rather than cost.

Control Talk Blog

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  • State of Technology Report: I/O Systems

    By Control

    In this exclusive, 35-page eBook from the editors of Control you will find an exclusive collection of our best technology trends, back-to-basics tutorials and application stories on all things I/O. The technology report is divided in three section: Trends in Technology Back to Basics Technology in…

    Full Story
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