One of the simplest classes of temperature sensor is one where temperature effects a change in electrical…
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Another category of control strategies involves the use of signal relays or function blocks with the ability…
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Human-machine interfaces, or HMIs, are a critical part of nearly all control systems, complementing the…
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Filled-bulb systems exploit the principle of fluid expansion to measure temperature. If a fluid is enclosed in…
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Suppose we wished to measure the consumption of propane over time for a large propane storage tank supplying a…
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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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A simple control system drawn in block diagram form looks like this: Information from the measuring device…
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The following animation shows a rotating phasor in three-dimensional form. The phasor rotates in a complex…
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Diagnostic ability is arguably the most difficult skill to develop within a student, and also the most…
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Imagine a liquid-level control system for a vessel, where the position of a level-sensing float directly sets…
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An exciting development in industrial instrumentation is the WirelessHART radio communication standard,…
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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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In order to provide an interface between the internal (digital) world of a computer and the external (analog)…
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A flow switch is one detecting the flow of some fluid through a pipe. Flow switches often use…
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Weight-based level instruments sense process level in a vessel by directly measuring the weight of the vessel.…
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Light is known to interact with matter in very specific ways, which may be exploited as a means of measuring…
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The most popular form of signal transmission used in modern industrial instrumentation systems (as of this…
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Cyber-security seems to have its own vocabulary, ranging from unwieldy technical acronyms to slang terms…
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A technological advance introduced in the late 1980’s was HART, an acronym standing for Highway…
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Coy, John J. et. al. (December 2012) Sampled graphic illustrations from his NASA Reference Publication…
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