A Safety Instrumented Function, or SIF, is one or more components designed to execute a specific…
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Any physical location in an industrial facility harboring the potential of explosion due to the presence of…
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Process analyzers measure the concentration of specific substances for the purpose of measuring and/or…
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Instrument technicians should not have to concern themselves over the programming details internal to digital…
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A bridge circuit is basically a pair of voltage dividers where the circuit output is taken as the difference…
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The dispersion of visible light into its constituent colors goes all the way back to the 17th century with…
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One of the marks of a successful problem-solver is a habit of applying general principles to every new problem…
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A form of protection against faults on long-distance power lines is called distance relaying, so named because…
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A variety of technologies exist to measure the quantity of stored material in a vessel. For liquid…
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Some problem-solving techniques are unique to quantitative problems, involving mathematical calculations. In…
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Circuit breakers used in residential, commercial, and light industrial service are self-tripping devices: they…
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To understand just how different FOUNDATION Fieldbus is from other digital instrument systems, consider a…
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When a high-energy photon strikes an atom, it may eject one of the lower-level electrons from its shell,…
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What is Calibration? To calibrate an instrument means to check and adjust (if necessary) its response so the…
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To summarize some of the key points and concepts for teaching: Do not waste class time transmitting facts to…
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Capacitors store energy in electric fields, proportional to the square of voltage. Inductors store energy in…
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A very simple device used to measure pressure is the manometer: a fluid-filled tube where an applied gas…
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The final step in treating wastewater before releasing it into the natural environment is to kill any harmful…
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Virtually any mass above absolute zero temperature emits electromagnetic radiation (photons, or light) as a…
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An important performance parameter for transmitter instruments is something often referred to as turndown or…
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Displacer level instruments exploit Archimedes’ Principle to detect liquid level by continuously…
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Learning how to tune PID controllers is a skill born of much practice. Regardless of how thoroughly you may…
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(Will be addressed in future versions of this book)
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