Learning is not merely a process of information transfer. It is first and foremost a transformation of…
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Take for instance the problem of measuring fluid flow through a pipe. To the layperson, this may seem to be a…
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The concepts of calibration (trimming) and ranging are often difficult for new students of instrumentation to…
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“Polyphase” means “many phases,” describing a form of AC electrical system where…
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A hand switch is exactly what the name implies: an electrical switch actuated by a person’s hand motion.…
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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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Since we often use electricity to convey energy from one location to another, it is important to be able to…
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Light is known to interact with matter in very specific ways, which may be exploited as a means of measuring…
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In addition to Ohm’s Law, we have a set of rules describing how voltages, currents, and resistances…
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A different strategy for controlling the flow of fluid is to insert a rotary element into the flow path.…
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Some of the simplest types of digital communication networks found in industry are defined by the EIA…
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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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Modern analog-to-digital converters are phenomenally accurate, dependable, repeatable, and surprisingly…
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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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Data-processing modules within FF systems are known as function blocks. Sometimes these blocks serve merely to…
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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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The digital multimeter (DMM) is quite possibly the most useful tool in the instrument technician’s…
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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 the United States, the most common language used to program PLCs is Ladder Diagram (LD), also known as…
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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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