“Radio” systems use electromagnetic fields to communicate information over long distances through…
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Disturbances in the liquid tend to complicate liquid level measurement. These disturbances may result from…
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The concepts of calibration (trimming) and ranging are often difficult for new students of instrumentation to…
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Area refers to the size of two-dimensional surface. Volume refers to the size of a three-dimensional space. To…
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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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An interesting parallel to the “unity fraction” unit conversion technique is something referred to…
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Multiple accessories exist for pressure-sensing devices to function optimally in challenging process…
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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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As a general rule, high achievement only takes place in an atmosphere of high expectations. Sometimes these…
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Data-processing modules within FF systems are known as function blocks. Sometimes these blocks serve merely to…
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Sometimes we encounter a diversity of instrument signal standards in one control system. Such is the case with…
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“Feedforward” is a rather under-used control strategy capable of managing a great many types of…
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DC electric motors generate torque by a reaction between two magnetic fields: one field established by…
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Some self-powered (4-wire) analog electronic transmitters are designed to behave as electrical loads rather…
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A temperature switch is one detecting the temperature of some substance. Temperature switches often use…
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A completely different way of measuring liquid level in vessels is to bounce a traveling wave off the surface…
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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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“Polyphase” means “many phases,” describing a form of AC electrical system where…
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Measuring the flow rate of liquid through an open channel is not unlike measuring the flow rate of a liquid…
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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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Most people reading this book have likely had the experience of adjusting water temperature using two hand…
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