Those of us old enough to remember the “good old days” recall that grade school focused on learning the three R’s: readin’, ’ritin’, and ’rithmetic. In the world of sensors, there are also three Rs: repeatability, resolution, and response. Despite how important these sensor parameters are, there is often confusion in the minds of users about exactly what they mean, and in what ways they tend to interact with each other. This article explains these three Rs for position sensors to dispel any confusion that exists.

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