RTDs are completely passive sensing elements, requiring the application of an externally-sourced electric…
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RTDs are completely passive sensing elements, requiring the application of an externally-sourced electric…
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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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Since we often use electricity to convey energy from one location to another, it is important to be able to…
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Suppose we wished to measure the rate of propane gas flow through a hose to a torch: Flowmeters appropriate…
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In our first signal characterization example, we tackle the problem of measuring fluid flow through a pipe. To…
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An important performance parameter for transmitter instruments is something often referred to as turndown or…
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As defined previously, calibration means the comparison and adjustment (if necessary) of an instrument’s…
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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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Certain types of nuclear radiation easily penetrates the walls of industrial vessels, but is attenuated by…
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Lipták, Béla G. et al., Instrument Engineers’ Handbook – Process Measurement and Analysis Volume I,…
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“Radio” systems use electromagnetic fields to communicate information over long distances through…
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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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As previously defined, calibration refers to the checking and adjustment of an instrument so that its output…
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Any conductor possesses a characteristic called inductance: the ability to store energy in the form of a…
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Control valves are supposed to deliver reliable, repeatable control of process fluid flow rate over a wide…
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RTDs are completely passive sensing elements, requiring the application of an externally-sourced electric…
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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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Modern analog-to-digital converters are phenomenally accurate, dependable, repeatable, and surprisingly…
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One of the most common, and most useful, pressure measuring instruments in industry is the differential…
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An electromechanical relay is an electrical switch actuated by an electromagnet coil. As switching devices,…
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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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