In this section I will show screenshots from a process loop simulation program illustrating the effectiveness…
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There are several different methods useful for causing an AC induction motor to brake, or slow down: DC…
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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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One of the most common, and most useful, pressure measuring instruments in industry is the differential…
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Imagine a major marathon race, where hundreds of runners gather in one place to compete. When the starting gun…
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Fieldbus devices require far more attention in their initial setup and commissioning than their analog…
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An engineer named Bob Metcalfe conceived the idea of Ethernet in 1973, while working for the Xerox research…
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In modern industry, the most popular form of field-level signal transmission for variable industrial…
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There are many process control applications in the industry where it is desirable to have multiple control…
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By definition, a source is a device delivering energy into a system, while a load is a device extracting…
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Every flow-measuring instrument exploits a physical principle to measure the flow rate of fluid stream.…
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Disturbances in the liquid tend to complicate liquid level measurement. These disturbances may result from…
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Non-dispersive analysis, while newer in discovery than dispersive analysis (Isaac Newton’s 17th-century…
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It is often useful to express the amplitude of an alternating quantity such as voltage or current in terms…
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The key to understanding how three-phase electric motors work is to have an accurate mental picture of the…
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A very common form of on/off valve used for pneumatic and hydraulic systems alike is the solenoid valve. A…
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A whole class of problem-solving techniques focuses on altering the given problem into a simpler form that is…
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Like so many other industrial data networks, FOUNDATION Fieldbus is an “unswitched” or…
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A fundamental principle in instrumentation system troubleshooting is that every instrument has at least one…
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Control strategies such as cascade, ratio, feedforward, and those containing limit and selector functions can…
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