As an instrumentation engineer you are asked to measure pressure with accuracy rate of ±0.1%, what does it imply? If the pressure actual readings are 2, 4, 5 kg/m2 in the full scale division of 10 kg/m2 then what are the possible measured values of pressure if accuracy rate of instrument is ±0.1% FSD ? State your answer with justification for the following whether it is accurate and precise, accurate not precise, precise but not accurate and not accurate and not precise.
Theory and Design for Mechanical Measurements
Measurement is a term that refers to analyzing a manufactured component regarding the degree of accuracy for dimensions, tolerances, geometric profile, roundness, flatness, smoothness, etc. Measurement always involves comparing the manufactured component or the prototype with a standard specimen whose dimensions and other parameters are assumed to be perfect and do not undergo changes with respect to time.Precisely in mechanical engineering the branch that deals with the application of scientific principles for measurements is known as metrology. The domain of metrology in general deals with various measurements like mechanical, chemical, thermodynamic, physical, and biological measurements. In mechanical engineering, the measurements are limited to mechanical specific such as length, mass, surface profile, flatness, roundness, viscosity, heat transfer, etc.
Basic principles of engineering metrology
Metrology is described as the science of measurement, precision, and accuracy. In other words, it is a method of measurement based on units and predefined standards.
As an instrumentation engineer you are asked to measure pressure with accuracy rate of
±0.1%, what does it imply?
If the pressure actual readings are 2, 4, 5 kg/m2
in the full scale division of 10 kg/m2
then what
are the possible measured values of pressure if accuracy rate of instrument is ±0.1% FSD ?
State your answer with justification for the following whether it is accurate and precise,
accurate not precise, precise but not accurate and not accurate and not precise.
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