Measuring the flow rate of liquid through an open channel is not unlike measuring the flow rate of a liquid…
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A machine in the broad sense of the word is any device designed to translate some form of energy into useful…
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A control strategy similar to ratio control is relation control. This is similar to ratio control in that a…
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A Safety Instrumented Function, or SIF, is one or more components designed to execute a specific…
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A simple control system drawn in block diagram form looks like this: Information from the measuring device…
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In the United States, the ANSI and IEEE organizations have standardized a set of numerical codes referring to…
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Valve actuators provide force to move control valve trim. For precise positioning of a control valve, there…
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Pipe is a hollow structure designed to provide an enclosed pathway for fluids to flow, usually manufactured…
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Abdelaziz, Ahmed (June 2014) Identified numerous typographical errors throughout the book, mostly repeated…
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A positive displacement flowmeter is a cyclic mechanism built to pass a fixed volume of fluid through with…
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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 reason why a pneumatic control valve’s stem position corresponds linearly to the amount of air…
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Modern DC and AC motor drives provide features useful when using electric motors as final control elements.…
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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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The vast majority of PID controllers in service today are digital in nature. Microprocessors executing PID…
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An interesting parallel to the “unity fraction” unit conversion technique is something referred to…
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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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Labwork is an essential part of any science-based curriculum. Here, much improvement may be made over the…
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Those familiar with industrial instrumentation will find much within the electric power industry remarkably…
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Negative feedback systems, in general, tend to cause confusion for those first learning their fundamental…
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