Self-balancing mechanisms consisting solely of a baffle/nozzle detector coupled to a feedback bellows, while…
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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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Most pneumatic instruments use a simple but highly sensitive mechanism for converting mechanical motion into…
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One of the simplest classes of temperature sensor is one where temperature effects a change in electrical…
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Non-dispersive analysis, while newer in discovery than dispersive analysis (Isaac Newton’s 17th-century…
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An electromechanical relay is an electrical switch actuated by an electromagnet coil. As switching devices,…
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Calculus. Few areas of mathematics are as powerfully useful in describing and analyzing the physical…
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Some self-powered (4-wire) analog electronic transmitters are designed to behave as electrical loads rather…
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Recall that an exothermic chemical reaction is one that releases a net sum of energy, as opposed to an…
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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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Some analyzers measure the composition of a process stream by directly immersing the sensing element in that…
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Electrical power grids primarily consist of three-phase AC circuits. This means most power lines (transmission…
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Up until this point, we have explored various types of instrumentation diagram, each one making reference to…
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Creative Commons Attribution 4.0 International Public License By exercising the Licensed Rights (defined…
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An important performance parameter for transmitter instruments is something often referred to as turndown or…
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The following photograph shows a large air blower in a wastewater treatment facility equipped with a…
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An engineer named Bob Metcalfe conceived the idea of Ethernet in 1973, while working for the Xerox research…
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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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A 4 to 20 mA current signal represents some signal along a 0 to 100 percent scale. Usually, this scale is…
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Valve actuators provide force to move control valve trim. For precise positioning of a control valve, there…
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