Thermodynamics is the study of heat, temperature, and their related effects in physical systems. As a subject,…
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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 great many precision instruments use the principle of balance to measure some quantity. Perhaps the simplest…
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As discussed at the beginning of this chapter, instrumentation safety may be broadly divided into two…
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Light has long been used as a long-range signaling medium. While communication by light through open air is…
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An exciting development in industrial instrumentation is the WirelessHART radio communication standard,…
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Abdelaziz, Ahmed (June 2014) Identified numerous typographical errors throughout the book, mostly repeated…
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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 limitation inherent to pneumatic valve actuators is the amount of air flow required to or from the actuator…
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Sample sizes of chemical substances are often measured in moles. One mole of a substance is defined as a…
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In this section I will show screenshots from a process loop simulation program illustrating the effectiveness…
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Weight-based level instruments sense process level in a vessel by directly measuring the weight of the vessel.…
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Temperature measurement devices may be classified into two broad types: contact and non-contact. Contact-type…
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To review, voltage is the measure of potential energy available to electric charges. Current is the uniform…
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Capacitance Any two electrical conductors separated by an insulating medium possess the characteristic called…
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In contrast to quantitative tuning procedures where definite numerical values for P, I, and D controller…
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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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Perhaps the most important rule of controller tuning is to know the process before attempting to adjust the…
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The disadvantages of pneumatic instruments are painfully evident to anyone familiar with both pneumatic and…
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Some analyzers measure the composition of a process stream by directly immersing the sensing element in that…
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