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74 results for “Instrumental measurement uncertainty”
The component of measurement uncertainty arising from the instrument or system in use, typically obtained from its calibration. VIM (JCGM 200:2012) 4.24…
The set of values of quantities of the same kind that can be measured by a given instrument or system with specified instrumental uncertainty…
…11.0Assessmentofuncertainty ThemethodofuncertaintyassessmentfollowstheNISTpolicyofexpressinguncertainty, asoutlinedintheNISTTechnicalNote1297.Conventional statisticalestimatesaregivenas standarddeviationsofthemean,andaredesignatedas"TypeA,"whichcanbeconsideredtobe objectiveestimates.Allotheruncertaintyestimates,whicharedesignated"TypeB,"are subjectiveestimates,basedonextensiveexperience.The"TypeB"uncertaintiesareestimated soastocorrespondapproximately toonestandarddeviation.TheTypeAandTypeBestimates arecombinedaccordingtotheusualruleforcombiningstandarddeviations…
The measurement uncertainty when the specified measured value is zero — what limits how confidently a null or tare reading can be trusted. VIM (JCGM…
…u_resolution is a floor, u_repeatability is measured; take whichever treatment is honest for your data, and never report combined uncertainty below the…
…The measurement services are described for the benefit of customers and potential customers, and the instruments, measurement procedures, and uncertainties are described in sufficient…
…An instrument can be well inside its MPE while your measurement of that fact carries large uncertainty — or the reverse. The collision happens at…
4o)beamdiameterdefinedbyISO,butmayusedifferentmeasurementmethodsother thantheNISTmeasurement.Atthecompletionofthecahbrationmeasurements, the DUTandacahbrationreportaresenttothecustomer.Thecahbrationreportsummarizes theresuhsofthemeasurementsandprovidesahstoftheassociatedmeasurement uncertainties.(SeeTable6.1.)TheNISTbeamdiametermeasurementsystemforthis calibrationservicewasdesignedandbuiltatNIST. MoreinformationcanbefoundinNISTOptoelectronicsDivisionQualityManual(QM- II)fordescriptionsofNIST,theNISTOptoelectronics Division,andtheirquality systems. 3.TheoryofMeasurement…
…To account for these additional uncertainties, the expanded uncertainty of the calibration of the instrument under test, U, can be calculated by 22 R…
…Instrument Description and Properties.........................................................8 4.2 Characterization of Instrument ..................................................................11 4.3 Instrument Validation ................................................................................13 4.4 Calibration Services ...................................................................................16 5. Uncertainty Analysis…
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