Sensors used to measure vibration come in three basic types: displacement, velocity, and acceleration.…
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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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The Law of Continuity for fluids states that the product of mass density (\(\rho\)), cross-sectional pipe area…
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A much simpler alternative to continuous vibration sensors (displacement or acceleration) and monitoring…
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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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One very convenient feature of waves is that their properties are universal. Waves of water in the ocean,…
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As discussed at the beginning of this chapter, instrumentation safety may be broadly divided into two…
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Creative Commons Attribution 4.0 International Public License By exercising the Licensed Rights (defined…
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Many traditional flowmeter technologies respond to the volumetric flow rate of the moving fluid.…
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The following photograph shows a large air blower in a wastewater treatment facility equipped with a…
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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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The following animation shows how a radio-energy pulse travels down and then up the waveguide of a guided-wave…
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Some problem-solving techniques are unique to quantitative problems, involving mathematical calculations. In…
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A very common form of on/off valve used for pneumatic and hydraulic systems alike is the solenoid valve. A…
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One of the simplest classes of temperature sensor is one where temperature effects a change in electrical…
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Fluid pressure exerts force on any surface area it contacts, as described by the formula \(F = PA\). One…
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To understand just how different FOUNDATION Fieldbus is from other digital instrument systems, consider a…
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Any physical location in an industrial facility harboring the potential of explosion due to the presence 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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Capacitors store energy in electric fields, proportional to the square of voltage. Inductors store energy in…
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A pressure switch is one detecting the presence of fluid pressure. Pressure switches often use diaphragms or…
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Volumes could be written about poor diagnostic technique. The following mistakes are not intended to comprise…
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A powerful mathematical concept useful for analyzing practically any physical system – electrical…
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First, let us review some of the properties of differentials and derivatives, referencing the expression and…
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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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Up until this point, we have explored various types of instrumentation diagram, each one making reference to…
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While 50 and 51 (instantaneous and time overcurrent) relay functions monitor line current magnitude and guard…
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Any conductor possesses a characteristic called inductance: the ability to store energy in the form of a…
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A sliding-stem valve body is one where the moving parts slide with a linear motion. Some examples of…
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RTDs are completely passive sensing elements, requiring the application of an externally-sourced electric…
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As defined previously, calibration means the comparison and adjustment (if necessary) of an instrument’s…
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A variety of problem-solving techniques have been presented for students over the years which are all helpful…
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