This section does not describe a particular type of flowmeter, but rather a design that may be implemented for…
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(Will be addressed in future versions of this book)
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I remember first learning about the world-wide Internet, and wondering what it actually looked like. The first…
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Process measurements are often of an analog nature: the temperature of a furnace, the rate of fluid flow…
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Much has been written about the benefits of robust PID control. Increased productivity, decreased equipment…
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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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A pressure switch is one detecting the presence of fluid pressure. Pressure switches often use diaphragms or…
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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 great many precision instruments use the principle of balance to measure some quantity. Perhaps the simplest…
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Calculus has a reputation for being difficult to learn, and with good reason. The traditional approach to…
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As we have seen, the concept of differentiation is finding the rate-of-change of one variable compared to…
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A vertical column of fluid generates a pressure at the bottom of the column owing to the action of gravity on…
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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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An engineer named Bob Metcalfe conceived the idea of Ethernet in 1973, while working for the Xerox research…
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One of the fundamental laws of electric circuits is Kirchhoff’s Current Law, which states the algebraic…
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One of the marks of a successful problem-solver is a habit of applying general principles to every new problem…
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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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Take for instance the problem of measuring fluid flow through a pipe. To the layperson, this may seem to be a…
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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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