RTDs are completely passive sensing elements, requiring the application of an externally-sourced electric…
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Most of these formulae appear in molecular chemical form rather than structural form. For example, ethanol…
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One of the most common, and most useful, pressure measuring instruments in industry is the differential…
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AC induction motors are based on the principle of a rotating magnetic field produced by a set of stationary…
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Virtually any mass above absolute zero temperature emits electromagnetic radiation (photons, or light) as a…
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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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Electrical Resistance Resistance (\(R\)) is the dissipative opposition to an electric current, analogous to…
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“Polyphase” means “many phases,” describing a form of AC electrical system where…
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One of the great benefits of digital technology is the ability to communicate vast amounts of information over…
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To understand just how different FOUNDATION Fieldbus is from other digital instrument systems, consider a…
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A flow switch is one that detects the flow of some fluid through a pipe. Flow switches often use…
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A fluid is any substance having the ability to flow: to freely change shape and move under the influence of a…
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Any physical location in an industrial facility harboring the potential of explosion due to the presence of…
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The following animation shows the calculus concepts of differentiation and integration (with respect to time)…
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Thermodynamics is the study of heat, temperature, and their related effects in physical systems. As a subject,…
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Any power grid large enough to meet the demand of an entire nation must have multiple generators drawing from…
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A level switch is one detecting the level of liquid or solid (granules or powder) in a vessel. Level switches…
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Modern DC and AC motor drives provide features useful when using electric motors as final control elements.…
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The three “elementary” particles of matter comprising all atoms are electrons, protons, and…
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“As to methods there may be a million and then some, but principles are few. The man who grasps…
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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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