Solids tend to expand when heated. The amount that a solid sample will expand with increased temperature…
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Certain types of nuclear radiation easily penetrates the walls of industrial vessels, but is attenuated by…
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Stoichiometry is the accounting of atoms before and after a chemical reaction. It is an expression of the Law…
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The Law of Mass Conservation states that matter can neither be created nor destroyed. The Law of Energy…
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Shown here is a partial listing of principles applied in the subject matter of this chapter, given for the…
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Nearly every technical course teaches and tests students on definitions, basic concepts, and at least some…
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A fundamental principle in instrumentation system troubleshooting is that every instrument has at least one…
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The fundamental principle of electromagnetism is that an electric current will create a magnetic field at…
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In addition to directly performing logic functions, electromechanical relays may also be used as interposing…
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Any conductor possesses a characteristic called inductance: the ability to store energy in the form of a…
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Displacer level instruments exploit Archimedes’ Principle to detect liquid level by continuously…
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Fluid pressure exerts force on any surface area it contacts, as described by the formula \(F = PA\). One…
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Multiple accessories exist for pressure-sensing devices to function optimally in challenging process…
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Current is the name we give to the motion of electric charges from a point of high potential to a point of low…
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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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A variety of technologies exist to measure the quantity of stored material in a vessel. For liquid…
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The Law of Continuity for fluids states that the product of mass density (\(\rho\)), cross-sectional pipe area…
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There are multiple motives for compromising the security of an industrial control system, some of which…
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A proximity switch is one detecting the proximity (closeness) of some object. By definition, these switches…
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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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One very convenient feature of waves is that their properties are universal. Waves of water in the ocean,…
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