This section shows some of the many instrument symbols found in different types of technical diagrams used to…
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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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Every programmable logic controller must have some means of receiving and interpreting signals from real-world…
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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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An electric motor is often used as a discrete control element in a control system if driving a pump, conveyor…
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Flow, by definition, is the passage of material from one location to another over time. So far this chapter…
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A powerful mathematical concept useful for analyzing practically any physical system – electrical…
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Tube, like pipe, is a hollow structure designed to provide an enclosed pathway for fluids to flow. In the case…
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One of the most important accessories for any temperature-sensing element is a pressure-tight sheath known as…
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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 vertical column of fluid generates a pressure at the bottom of the column owing to the action of gravity on…
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To better understand the design and operation of self-balancing pneumatic mechanisms, it is helpful to examine…
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It is possible to convey electrical power and communicate analog information over the same two wires using 4…
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All masses require force to accelerate (we can also think of this in terms of the mass generating a reaction…
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One of the great benefits of digital technology is the ability to communicate vast amounts of information over…
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Like so many other industrial data networks, FOUNDATION Fieldbus is an “unswitched” or…
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There are many process control applications in the industry where it is desirable to have multiple control…
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Feedback obtained from industrial users of FF reveal a common pattern: Fieldbus is a powerful and reliable…
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Electrical power grids primarily consist of three-phase AC circuits. This means most power lines (transmission…
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A proximity switch is one detecting the proximity (closeness) of some object. By definition, these switches…
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