Multiple accessories exist for pressure-sensing devices to function optimally in challenging process…
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A machine in the broad sense of the word is any device designed to translate some form of energy into useful…
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The disadvantages of pneumatic instruments are painfully evident to anyone familiar with both pneumatic and…
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Perhaps the simplest form of solid or liquid level measurement is with a float: a device that rides on the…
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Abdelaziz, Ahmed (June 2014) Identified numerous typographical errors throughout the book, mostly repeated…
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As we have seen, the concept of integration is finding the accumulation of one variable multiplied by another…
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Self-balancing mechanisms consisting solely of a baffle/nozzle detector coupled to a feedback bellows, while…
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Multiple accessories exist for pressure-sensing devices to function optimally in challenging process…
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Pipe is a hollow structure designed to provide an enclosed pathway for fluids to flow, usually manufactured…
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A Safety Instrumented Function, or SIF, is one or more components designed to execute a specific…
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Those familiar with industrial instrumentation will find much within the electric power industry remarkably…
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An on/off valve is the fluid equivalent of an electrical switch: a device that either allows unimpeded flow or…
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One of the most common, and most useful, pressure measuring instruments in industry is the differential…
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Regardless of valve type, all stem-actuated control valves require some form of seal allowing motion of the…
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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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Valves can experience a number of problems, most of them either preventable or repairable. These problems can…
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Some problem-solving techniques are unique to quantitative problems, involving mathematical calculations. In…
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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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In some process applications, it is important that the control valve be able to completely stop fluid flow…
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Most pneumatic instruments use a simple but highly sensitive mechanism for converting mechanical motion into…
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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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Finally, we arrive at the loop diagram (sometimes called a loop sheet) for the compressor surge control system…
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Classical mechanics (often called Newtonian mechanics in honor of Isaac Newton) deal with forces and motions…
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For better or worse, there are no fewer than three different forms of PID equations implemented in modern PID…
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A fluid is any substance having the ability to flow: to freely change shape and move under the influence of a…
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A design-based fortification is one rooted in technical details of system architecture and functionality. Some…
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All substances are comprised of various elements in various combinations and proportions. Elements may thus be…
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A number of different sensors used in instrumentation generate DC voltage signals proportional to the process…
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The concepts of calibration (trimming) and ranging are often difficult for new students of instrumentation to…
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Although it seems each model of PLC has its own idiosyncratic standard for programming, there does exist an…
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The disadvantages of pneumatic instruments are painfully evident to anyone familiar with both pneumatic and…
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To summarize some of the key points and concepts for teaching: Do not waste class time transmitting facts to…
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The term “grid” refers to the conductors and equipment interconnecting power sources to power…
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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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Three-phase AC is the dominant mode of electric power generation and distribution in modern societies.…
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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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One very convenient feature of waves is that their properties are universal. Waves of water in the ocean,…
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As we have seen, the concept of integration is finding the accumulation of one variable multiplied by another…
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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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There are multiple motives for compromising the security of an industrial control system, some of which…
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What is Calibration? To calibrate an instrument means to check and adjust (if necessary) its response so the…
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