A powerful mathematical concept useful for analyzing practically any physical system – electrical…
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Creative Commons Attribution 4.0 International Public License By exercising the Licensed Rights (defined…
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A whole class of problem-solving techniques focuses on altering the given problem into a simpler form that is…
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An extremely important topic in engineering is that of transfer functions. Simply defined, a transfer function…
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In reliability engineering, it is important to be able to quantity the reliability (or conversely, the…
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RTDs are completely passive sensing elements, requiring the application of an externally-sourced electric…
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Phasors are to AC circuit quantities as polarity is to DC circuit quantities: a way to express the…
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Although analog electronic process controllers are considered a newer technology than pneumatic process…
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The vast majority of modern process transmitters (both analog and digital) come equipped with a feature known…
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Learning how to tune PID controllers is a skill born of much practice. Regardless of how thoroughly you may…
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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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A special type flowmeter suited for powdered or granular solids is the weighfeeder. One of the most common…
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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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Electrical power grids primarily consist of three-phase AC circuits. This means most power lines (transmission…
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Much has been written about the benefits of robust PID control. Increased productivity, decreased equipment…
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In order for any PID controller to be practical, it must be able to do more than just implement the PID…
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A great many chemical composition measurements may be made indirectly by means of electricity, if those…
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The disadvantages of pneumatic instruments are painfully evident to anyone familiar with both pneumatic and…
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The reason why a pneumatic control valve’s stem position corresponds linearly to the amount of air…
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It is often useful to express the amplitude of an alternating quantity such as voltage or current in terms…
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“Radio” systems use electromagnetic fields to communicate information over long distances through…
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A technological advance introduced in the late 1980’s was HART, an acronym standing for Highway…
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Atom: the smallest unit of matter that may be isolated by chemical means. Particle: a part of an atom,…
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The efficient identification and correction of instrument calibration errors is an important function for…
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Steam boilers are very common in industry, principally because steam power is so useful. Common uses for steam…
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Much of our knowledge about atomic structure comes from experimental data relating the interaction between…
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Certain types of nuclear radiation easily penetrates the walls of industrial vessels, but is attenuated by…
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Layer 1 of the OSI Reference Model is where we define the “physical” elements of a digital data…
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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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