>> P.83
QuickGuidetoPrecisionMeasuringInstrumentsQuickGuidetoPrecisionMeasuringInstrumentsGageHead■PlainStemTheplainstemhastheadvantageofwiderapplicationandslightpositionaladjustmentintheaxialdirectiononfinalinstallation,althoughitdoesrequiresasplit-fixtureclampingarrangementoradhesivefixing.However,takecaresoasnottoexertexcessiveforceonthestem.■MeasuringForceナット付きステムPlainstemThisistheforceexertedonaworkpieceduringmeasurementbythecontactpointofalineargagehead,atitsstrokeend,expressedinnewtons.■ComparativeMeasurementAmeasurementmethodwhereaworkpiecedimensionisfoundbymeasuringthedifferenceinsizebetweentheworkpieceandamastergagerepresentingthenominalworkpiecedimension.■IngressProtectionCodeProtectioncodeIP66IP67TypeLevelDescriptionProtectionagainstcontactwiththehumanbodyandforeignobjectsProtectsagainstexposuretowaterProtectionagainstcontactwiththehumanbodyandforeignobjects6:DusttightProtectionfromdustingressCompleteprotectionagainstcontact6:Water-resistanttypeWaterjetsdirectedagainsttheenclosurefromanydirectionshallhavenoharmfuleffects.6:DusttightProtectionfromdustingressCompleteprotectionagainstcontactProtectsagainstexposuretowater7:Immersion-protectionIP□□GOil-proof-Protectionagainsttheeffectsofimmersioninwaterbetween1cmand1mfor30minutesProtectionagainstentryofoildropletsorsplashesfromalldirections.■PrecautionsinMountingaGageHead•Insertthestemofthegageintothemountingclampofameasuringunitorastandandtightentheclampscrew.•Noticethatexcessivelytighteningthestemcancauseproblemswithspindleoperation.•Neveruseamountingmethodinwhichthestemisclampedbydirectcontactwithascrew.•Nevermountalineargagebyanypartotherthanthestem.•Mountthegageheadsothatitisinlinewiththeintendeddirectionofmeasurement.Mountingtheheadatanangletothisdirectionwillcauseanerrorinmeasurement.•Exercisecaresoasnottoexertaforceonthegagethroughthecable.■PrecautionsinMountingLGHSeriesTofixtheLGHSeries,insertthestemintothededicatedstandorfixture.Recommendedholediameteronthefixingside:15mm+0.034/+0.014StemClampscrewStemClampscrewClampClamp•Machinetheclampingholesothatitsaxisisparallelwiththemeasuringdirection.Mountingthegageatananglewillcauseameasuringerror.•WhenfixingtheLGHSeries,donotclampthestemtootightly.Over-tighteningthestemmayimpairtheslidingabilityofthespindle.•IfmeasurementisperformedwhilemovingtheLGHSeries,mountitsothatthecablewillnotbestrainedandnoundueforcewillbeexertedonthegagehead.1-66
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