Weight-based level instruments sense process level in a vessel by directly measuring the weight of the vessel.…
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One of the most important accessories for any temperature-sensing element is a pressure-tight sheath known as…
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For better or worse, there are no fewer than three different forms of PID equations implemented in modern PID…
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Labwork is an essential part of any science-based curriculum. Here, much improvement may be made over the…
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Much has been written about the benefits of robust PID control. Increased productivity, decreased equipment…
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An exciting development in industrial instrumentation is the WirelessHART radio communication standard,…
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At the root of successful system diagnosis is a rigorous adherence to scientific reasoning. There exists no…
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Perhaps the most important rule of controller tuning is to know the process before attempting to adjust the…
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A quantitative PID tuning procedure is a step-by-step approach leading directly to a set of numerical values…
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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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Control strategies such as cascade, ratio, feedforward, and those containing limit and selector functions can…
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pH is the measurement of the hydrogen ion activity in a liquid solution. It is one of the most common forms of…
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Learning is not merely a process of information transfer. It is first and foremost a transformation of…
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A technological advance introduced in the late 1980’s was HART, an acronym standing for Highway…
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Virtually any mass above absolute zero temperature emits electromagnetic radiation (photons, or light) as a…
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This animation shows the basic operation of a gas chromatograph, showing the separation of different molecular…
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A form of protection against faults on long-distance power lines is called distance relaying, so named because…
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When a high-energy photon strikes an atom, it may eject one of the lower-level electrons from its shell,…
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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 purpose of a control valve actuator is to provide the motive force to operate a valve mechanism. Both…
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