A simple control system drawn in block diagram form looks like this: Information from the measuring device…
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One of the most common, and most useful, pressure measuring instruments in industry is the differential…
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Feedback obtained from industrial users of FF reveal a common pattern: Fieldbus is a powerful and reliable…
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Any power grid large enough to meet the demand of an entire nation must have multiple generators drawing from…
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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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The digital multimeter (DMM) is quite possibly the most useful tool in the instrument technician’s…
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An variable-area flowmeter is one where the fluid must pass through a restriction whose area increases with…
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An interesting parallel to the “unity fraction” unit conversion technique is something referred to…
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Self-balancing mechanisms consisting solely of a baffle/nozzle detector coupled to a feedback bellows, while…
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There are several different methods useful for causing an AC induction motor to brake, or slow down: DC…
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When I began teaching full-time in 1998, most of what I thought I understood about good teaching was actually…
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Many years ago, when I was first learning about electricity, I happened to discover a length of coaxial…
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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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A wise PLC programmer once told me that the first thing any aspiring programmer should learn about the PLC…
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A proximity switch is one detecting the proximity (closeness) of some object. By definition, these switches…
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Tube, like pipe, is a hollow structure designed to provide an enclosed pathway for fluids to flow. In the case…
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A special type flowmeter suited for powdered or granular solids is the weighfeeder. One of the most common…
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The next level of detail is the Process and Instrument Diagram, or P&ID. Here, we see a “zooming…
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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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While the term “probability” may evoke images of imprecision, probability is in fact an exact…
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