Phasors are to AC circuit quantities as polarity is to DC circuit quantities: a way to express the…
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Like so many other industrial data networks, FOUNDATION Fieldbus is an “unswitched” or…
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Current is the name we give to the motion of electric charges from a point of high potential to a point of low…
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Certain types of nuclear radiation easily penetrates the walls of industrial vessels, but is attenuated by…
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In some process applications, it is important that the control valve be able to completely stop fluid flow…
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While the term “probability” may evoke images of imprecision, probability is in fact an exact…
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For better or worse, there are no fewer than three different forms of PID equations implemented in modern PID…
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Any power grid large enough to meet the demand of an entire nation must have multiple generators drawing from…
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A pressure switch is one detecting the presence of fluid pressure. Pressure switches often use diaphragms or…
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The two “process variables” we rely on most heavily in the field of electrical measurement and…
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Capacitors store energy in electric fields, proportional to the square of voltage. Inductors store energy in…
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Using filter cells to eliminate wavelengths associated with interfering gases is called positive filtering in…
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A quantitative PID tuning procedure is a step-by-step approach leading directly to a set of numerical values…
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Temperature measurement devices may be classified into two broad types: contact and non-contact. Contact-type…
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Fieldbus devices require far more attention in their initial setup and commissioning than their analog…
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Electromechanical relays may be connected together to perform logic and control functions, acting as logic…
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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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Developed by the Modicon company (the original manufacturer of the Programmable Logic Controller, or PLC) in…
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Visualizing the actions of P, I, and D tuning parameters using graphs is extremely useful in predicting the…
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Valves can experience a number of problems, most of them either preventable or repairable. These problems can…
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