A measurement system comprises a collection of devices designed to deliver a quantified value of a given input through the process of measurement. When the recipient of this measurement is a human observer, the result is typically presented either as a position on a graduated scale in an analog output format or as a numerical value on a display screen in a numeric output format. Conversely, when the recipient is an electronic device or a personal computer, the output manifests as an electrical signal.
The specifications for a measuring instrument or, more broadly, a system capable of characterizing diverse and determinative conditions, are usually provided directly by the manufacturer. It’s important to note that these specifications define the instrument’s characteristic parameters within specific limits, often referred to as tolerances. These tolerances serve to establish an acceptable range of errors for each feature.
When crafting these specifications, the measuring instrument can be conceptualized as a block that can transfer the information and energy present at the output, either in an unaltered state or in a converted form, as required.