>> P.13-35
DialIndicators,DigitalIndicatorsandTestIndicatorsDialtestindicators(levertype)StandardB7533:2015(ExtractfromJIS/JapaneseIndustrialStandards)No.Item.MeasuringmethodMeasuringpointEvaluationmethodDiagramIndicationerrorovertheentiremeasuringrange(intheforwarddirection)10graduationsindicationerror1revolutionindicationerror1234Retraceerror5Repeatability6MeasuringforceHoldingthedialtestindicator(levertype),definethereferencepointatnearthecontactpointrestingpointwheretheindicationanderrorofindicationissettozero.Then,movethecontactpointintheforwarddirectionandreadtheerrorofindicationateachmeasuringpoint.Next,aftermovingthecontactpointformorethanthreegraduationsfromtheendofthemeasuringrange,movethecontactpointinthebackwarddirectionandreadtheerrorofindicationatthesamemeasurementpointintheforwarddirection.(TheforwarddirectionisthedirectionagainstthemeasuringforcetothecontactpointoftheDialtestindicators(levertype);thebackwarddirectionisthemeasuringforceapplieddirection.)Holdingthedialtestindicator(levertype)withitsstylusparallelwiththetopfaceofthemeasuringstage,movethecontactpointquicklyandslowlyfivetimesatadesiredpositionwithinthemeasuringrangeandreadtheindicationateachpoint.Holdingthedialtestindicator(levertype),movethecontactpointintheforwardandbackwarddirectionscontinuouslyandgradually,andreadthemeasuringforceinthemeasuringrange.Obtainthedifferencebetweenthemaximumandtheminimumvaluesofindicationerrorofallmeasurementpointsintheforwarddirection.Intheforwarddirectionfromthereferencepointtotheendpoint,obtainthemaximumdifferenceoftheindicationerroramongtheadjacentmeasurementpointsper10graduations.Intheforwarddirectionfromthereferencepointtotheendpoint,obtainthemaximumdifferenceofthemaximumandtheminimumindicationerrorstobereadbythezero-pointfixedmethodoverthemeasuringrangeper1revolution.Obtainthemaximumdifferenceinreferencetotheindicationerroratthesamemeasuringpointinbothforwardandbackwarddirectionsamongallthemeasurementpoints.Per10graduationsintheforwardandbackwarddirectionfromthereferencepointtotheendpoint.AtarbitrarypointswithinthemeasuringrangeObtainthemaximumdifferenceofthefivemeasuredvalues.ReferencepointandendpointwithinthemeasuringrangeObtainthemaximumandtheminimumvaluesinreferencetothemeasuringforce.Dialtestindiators(levertype)SupportingstandMicrometerheadolengthmeasuringunitDialtestindicators(lvertype)SupportingstandDialtestindicators(levertype)Toppantypespringscale●MaximumpermissibleerrorandpermissiblelimitsGraduation(mm)Revolution0.001/0.0021revolutionMulti-revolution0.011revolutionMeasuringrange(mm)0.3orlessIndicationerror(µm)Retraceerror(µm)Repeatability(µm)Measuringforce(N)Measuringrange(µm)Onerevolution10scaledivisions(µm)Max.Min.4—2310.50.01Over0.3,uptoOver0.5,upto0.5652410.50.010.6752410.50.010.5orlessOver0.5,upto1.035<L1L1≤356—5430.50.019—5430.50.0110—5530.50.01Multi-revolutionOver1.0,upto1.616105530.50.01Indicators13-35
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