RTDs are completely passive sensing elements, requiring the application of an externally-sourced electric…
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RTDs are completely passive sensing elements, requiring the application of an externally-sourced electric…
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The simple PLC ladder diagram (LD) commands consist of contacts and coils, arranged in sequences that mimic…
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Some analyzers measure the composition of a process stream by directly immersing the sensing element in that…
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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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(Will be addressed in future versions of this book)
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Given the ability of pressurized fluids to transmit force over long distances, it is not surprising that many…
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Volumes could be written about poor diagnostic technique. The following mistakes are not intended to comprise…
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Non-dispersive analysis, while newer in discovery than dispersive analysis (Isaac Newton’s 17th-century…
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Capacitance Any two electrical conductors separated by an insulating medium possess the characteristic called…
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Human-machine interfaces, or HMIs, are a critical part of nearly all control systems, complementing the…
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Abdelaziz, Ahmed (June 2014) Identified numerous typographical errors throughout the book, mostly repeated…
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Learning is not merely a process of information transfer. It is first and foremost a transformation of…
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As a general rule, high achievement only takes place in an atmosphere of high expectations. Sometimes these…
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In order to provide an interface between the internal (digital) world of a computer and the external (analog)…
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When control valves operate between fully open and fully shut, they serve much the same purpose in process…
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The next level of detail is the Process and Instrument Diagram, or P&ID. Here, we see a “zooming…
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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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Perhaps the most confusing aspect of discrete sensors is the definition of a sensor’s normal status.…
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Although it seems each model of PLC has its own idiosyncratic standard for programming, there does exist an…
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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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A completely different way of measuring liquid level in vessels is to bounce a traveling wave off the surface…
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