Tag Archives | Instrumentation

Plant-Wide-Control-Design-Based-on-Steady-State-Combined-Indexes

Plant-Wide Control Design Based on Steady-State Combined Indexes

  Abstract: This work proposes an alternative methodology for designing multi-loop control structures based on steady-state indexes and multi-objective combinatorial optimization problems. Indeed, the simultaneous selection of the controlled variables, manipulated variables, input-output pairing, and controller size and interaction degree is performed by using a combined index which relies on the sum of square deviations and […]

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Measuring-Fuel-Oil-Viscosity-in-a-Power-Plant

Measuring Fuel Oil Viscosity in a Power Plant

  Abstract: The viscosity measurement and control of fuel oil in power plants is very important for a proper combustion. However, the conventional viscometers are only reliable for a short period of time. This paper proposes an on-line analytic viscosity evaluation based on energy balance applied to a piece of tube entering the fuel oil main […]

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Novel-Auto-Tuning-Method-for-Fractional-Order-PID-Controllers

Auto-Tuning Method for Fractional Order PID Controllers

  Abstract: Fractional order PID controllers benefit from an increasing amount of interest from the research community due to their proven advantages. The classical tuning approach for these controllers is based on specifying a certain gain crossover frequency, a phase margin and a robustness to gain variations. To tune the fractional order controllers, the modulus, phase […]

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Best-Method-for-Level-Measurement

AutoQuiz: How to Choose Best Method for Level Measurement

  Today’s automation industry quiz question comes from the ISA Certified Automation Professional certification program. ISA CAP certification provides a non-biased, third-party, objective assessment and confirmation of an automation professional’s skills. The CAP exam is focused on direction, definition, design, development/application, deployment, documentation, and support of systems, software, and equipment used in control systems, manufacturing […]

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How-to-Measure-Pressure-in-a-Tank

AutoQuiz: How to Measure Pressure in a Tank

  Today’s automation industry quiz question comes from the ISA Certified Control Systems Technician (CCST) program. Certified Control System Technicians calibrate, document, troubleshoot, and repair/replace instrumentation for systems that measure and control level, temperature, pressure, flow, and other process variables. Click this link for more information about the CCST program.   Approximately what is the […]

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Attend ISA's 2018 Leak Detection & Repair/Fugitive Emissions Symposium

 

Don't miss the air compliance industry's only conference dedicated to sharing best practices for leak detection and repair (LDAR). Join your colleagues in Galveston, Tex. during the first week in March for technical presentations, professionals networking, and ISA-led training courses.

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