Any physical location in an industrial facility harboring the potential of explosion due to the presence of…
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Process analyzers measure the concentration of specific substances for the purpose of measuring and/or…
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A Safety Instrumented Function, or SIF, is one or more components designed to execute a specific…
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Imagine a major marathon race, where hundreds of runners gather in one place to compete. When the starting gun…
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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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Once while working as an instrument technician in an aluminum foundry, a mechanic asked me what it was that I…
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At the next OSI Reference Model layer (layer 4) is a set of protocols specifying how reliable communication…
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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 following photograph shows a large air blower in a wastewater treatment facility equipped with a…
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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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To understand just how different FOUNDATION Fieldbus is from other digital instrument systems, consider a…
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As we have seen, feedforward control is a way to improve the stability of a feedback control system in the…
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Human-machine interfaces, or HMIs, are a critical part of nearly all control systems, complementing the…
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Several different technologies exist for the conversion of fluid pressure into an electrical signal response.…
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Regulating the electric power sent to an electric motor is a task performed by high-speed switching…
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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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Certain types of nuclear radiation easily penetrates the walls of industrial vessels, but is attenuated by…
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An exciting development in industrial instrumentation is the WirelessHART radio communication standard,…
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Two extremely important principles in electric circuits were codified by Gustav Robert Kirchhoff in the year…
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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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Imagine a liquid-level control system for a vessel, where the position of a level-sensing float sets the…
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A damper (otherwise known as a louvre) is a multi-element flow control device generally used to throttle large…
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The following collection of photographs chronicles the complete disassembly of a Fisher E-body globe valve…
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