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Mitutoyo'sResponsetoDialIndicatorStandardJISB7503:2017•Weguaranteetheaccuracyofcompletedproductsbyinspectingthemintheverticalposture.Standard-attachedinspectioncerticateincludesinspectiondata.•Weissuepaid-forcalibrationresultsforhorizontaloroppositepostureifrequired.•Itissaidthat,forevaluationofthecompatibilitytothespecications,JISB0641-1orthecriteriawheretheinternationally-recognizedspecicationrangeandtheOKrangeareequalshallbeapplied.Also,itissaidthattheuncertaintyispreferredtobeevaluatedbasedonISO14253-2andISO/IECGuide98-3.Therefore,weperformshippinginspectionofdialindicatorsinclusiveoftheuncertaintyofcalibrationasinthepast.Electronicdigital-indicatorgageStandardJISB7563:2021(ExtractfromJIS/JapaneseIndustrialStandards)Measuringmethod(zero-pointfixed)Evaluationmethod(performanceevaluationbymovingthezeropoint)MeasurementexamplesSetthedigitalindicatorgageonthesupport.Graduallyretractthecontactpointandreadindicationerrorsatthemeasurementpoints.Next,pressthecontactpointuntilitcomesto0.1mmormoreabovetheendpoint.Then,graduallyadvancethecontactpointandmeasureindicationerrorsatthesamemeasurementpointsaswhentheprobewasretracted.a)Forapartialmeasuringrange,sixormoremeasurementpointsincludingthestartpoint(evenlyspacedwheneverpossible)arerequiredwithintherangefromthestartpointtothepointof50timestheminimumresolution.b)Forafullmeasuringrange,11ormoremeasurementpointsincludingthestartpointandtheendpoint(evenlyspacedwheneverpossible)arerequired.c)Toreadtheindicationerrors,itispossibletoreadeithertheinputonthemeasuringinstrumentcorrespondingtothedigitalvalueorthedigitalvaluecorrespondingtothemovementamountonthemeasuringinstrument.Obtainthedifferencebetweenthemaximumandminimumindicationerrorsatmeasurementpointsintheretractingdirectioninapartialmeasuringrange.Obtainthedifferencebetweenthemaximumandminimumindicationerrorsatmeasurementpointsintheretractingdirectioninafullmeasuringrange.a)Measurementpointsintheretractingdirectioninafullmeasuringrangeincludethoseinapartialmeasuringrange.Obtainthemaximumdifferenceamongtheindicationerrorsatthesamemeasurementpointsbetweentheretractingandadvancingdirectionsinpartialandfullmeasuringranges.ItemPartialmeasuringrangePMPETotalmeasuringrangeEMPEHysteresisHMPEMaximumpermissibleerrorRepeatabilityRMPESetthedigitalindicatorgageonthesupport.Pressthecontactpointuntilitcomestoadesiredpointwithinthemeasuringrangeandthenmakeitoperateintheadvancingdirectionfivetimes.Checkoperationbymovingthecontactpointbothrapidlyandslowlyandreadthedisplayedvalues.Obtainthemaximumdifferenceofthefivemeasuredvalues.DigitalIndicatorGageDigitalIndicatorGageDigitalIndicatorGageSupportingstandSupportingstandReferencestandardSupportingstandReferencestandard(Micrometerhead(MicrometerheadorotherlengthorotherlengthReferencestandardeigut)measuringunit)Mieterhadorotherlengthmeasuringunit)DigitalIndicatorGageDigitalIndicatorGageDigitalIndicatorGageSupportingstandSupportingstandSupportingstandMeasuringstageMeasuringstage(Gaugeblock)(Gaugeblock)Measuringstage(Gaugeblock)DigitalIndicatorGageDigitalIndicatorGageDigitalIndicatorGageSupportingstandSupportingstandToppantypeToppantypespringscaleororigsandspringscaleorforcegageforcegageToppantypespringscaleorforcegageMeasuringforceMPLSetthedigimaticindicatoronthesupportingstand,retractandextendthespindlecontinuouslyandgradually,andreadthemeasuringforceatthezeroandendpoints.Obtainthemaximummeasuringforce,theminimummeasuringforce,andthedifferenceofthemeasuringforceinbothretractandextenddirectionsatthesamemeasurementpoint.Fig.1ConventionalJISInstrumentalerrorJISB7502-1994SpecificationrangeElectronicdigital-indicatorgagemaximumpermissibleerror(MPE)Non-conformityrangeConformityrangeNon-conformityrangeAcceptancerange15orlessOver60,upto100Over30,upto60UncertaintyisnotincludedinjudgmentSpecificationrange=AcceptancerangeOver15,upto305533Over30,upto60Over60,upto100550.00050.025320.010.50.0010.0515orlessOver15,upto30Over30,upto60Over60,upto10015orlessOver15,upto302020404033202032Resolution(mm)Partialmeasuringrange(mm)Measuringrange(mm)CharacteristicItemPartialmeasuringrangePMPE(μm)TotalmeasuringrangeEMPE(μm)HysteresisHMPE(μm)RepeatabilityRMPE(μm)Mitutoyo'sResponsetoElectronicdigital-indicatorgageStandardJISB7563:2021•Weguaranteetheaccuracyofcompletedproductsbyinspectingthemintheverticalposture.Standard-attachedinspectioncertificateincludesinspectiondata.•Weissuepaid-forcalibrationresultsforhorizontaloroppositepostureifrequired.•Itisstatedthat“JISB0641-1shouldbeappliedtoverificationofconformity/nonconformitytothespecifications.ISO14253-2andISO/IECGuide98-3shouldbeappliedtoevaluationofuncertaintywheneverpossible.”Therefore,usingthespecificationrangeastheconformingrangeisacceptedwhenthevaluesatisfiesspecificconditionsthataredeterminedbytakingintoaccountuncertainty.TheabovesaidinternationallyrecognizedacceptancecriterionisISO/TR14253-6:2012(Fig.1).Fig.2NewJISMaximumPermissibleError(MPE)Fig.1MaximumPermissibleErrorMPEJISB7502:2016(ISO/TR14253-6:2012)JISB7563:2021(JISB0641-1)Non-conformityrange(Rejected)UUSpecificationrangeConformityrangeAcceptanceNon-conformityrange(Rejected)UUUncertaintyrangeUncertaintyrangeWhenaconditionconsideringuncertaintyissatisfiedSpecificationrange=Conformityrange07-107
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