A variety of problem-solving techniques have been presented for students over the years which are all helpful…
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A pneumatic controller receives a process variable (PV) signal as a variable air pressure, compares that…
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In addition to directly performing logic functions, electromechanical relays may also be used as interposing…
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A design-based fortification is one rooted in technical details of system architecture and functionality. Some…
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Many traditional flowmeter technologies respond to the volumetric flow rate of the moving fluid.…
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Two extremely important principles in electric circuits were codified by Gustav Robert Kirchhoff in the year…
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Current is the name we give to the motion of electric charges from a point of high potential to a point of low…
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Classical mechanics (often called Newtonian mechanics in honor of Isaac Newton) deal with forces and motions…
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A level switch is one detecting the level of liquid or solid (granules or powder) in a vessel. Level switches…
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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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Suppose we wished to measure the consumption of propane over time for a large propane storage tank supplying a…
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First, let us review some of the properties of differentials and derivatives, referencing the expression and…
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Since we often use electricity to convey energy from one location to another, it is important to be able to…
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Most of these formulae appear in molecular chemical form rather than structural form. For example, ethanol…
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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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As defined previously, calibration means the comparison and adjustment (if necessary) of an instrument’s…
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This section does not describe a particular type of flowmeter, but rather a design that may be implemented for…
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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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A proximity switch is one detecting the proximity (closeness) of some object. By definition, these switches…
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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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