Pipe is a hollow structure designed to provide an enclosed pathway for fluids to flow, usually manufactured…
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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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In reliability engineering, it is important to be able to quantity the reliability (or conversely, 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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This section does not describe a particular type of flowmeter, but rather a design that may be implemented for…
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The following animation shows a rotating phasor in three-dimensional form. The phasor rotates in a complex…
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As we have seen, feedforward control is a way to improve the stability of a feedback control system in the…
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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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A different strategy for controlling the flow of fluid is to insert a rotary element into the flow path.…
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Perhaps the most valuable skill an instrument technician can possess is the ability to efficiently diagnose…
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Negative feedback systems, in general, tend to cause confusion for those first learning their fundamental…
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Electromechanical relays may be connected together to perform logic and control functions, acting as logic…
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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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Regardless of valve type, all stem-actuated control valves require some form of seal allowing motion of the…
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The vast majority of PID controllers in service today are digital in nature. Microprocessors executing PID…
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“Radio” systems use electromagnetic fields to communicate information over long distances through…
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Self-balancing pneumatic instrument mechanisms are very similar to negative-feedback operational amplifier…
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(Will be addressed in future versions of this book)
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A hand switch is exactly what the name implies: an electrical switch actuated by a person’s hand motion.…
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Sample sizes of chemical substances are often measured in moles. One mole of a substance is defined as a…
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