what is proximity vibration&condition monitoring ：what is proximity振动监测及条件.ppt

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1、WhatisProximity?Createdby:ProvibTechProximityOutlineDefinitionofProximity?WhatisaProximitySensor?WhyuseaProximitySensor?WhentouseaProximitySensor/Transmitter?HowtouseaProximitySensor?ProximityTransmitters?DefinitionofProximity?Nearnessinplace,time,order,occurrence,orrelatio

2、nTheregionclosearoundapersonorthingDistanceisanumericaldescriptionofhowfarapartobjectsareWhatisaProximitySensor?DetectspresenceofnearbyobjectswithoutanyphysicalcontactDetectsmovementorthepresenceofanobjectandconvertsittoanelectricalsignaloftenemitsanelectromagneticorelectro

3、staticfieldandlooksforchangesinthefieldorreturnsignalElectromagnetismMagnetismarisingfromelectricchargeinmotionElectrostaticThechargebuildupthatusuallyoccursbecauseofelectronimbalanceatthesurfaceofmaterialsTypesofDetectionSystemsEddyCurrentorInductivegeneratedinmetallicsens

4、ingobjectsbyelectromagneticinductionCapacitivesystemsthatdetectchangesinelectricalcapacitywhenapproachingthesensingobjectMagnetizedsystemsthatusemagnetsandreedswitchesWhyuseaProximitySensor?BecauseProvibTechmadeit!WhyuseaProximitySensor?HighReliabilityMachinevibrationmonito

5、ringMeasurethevariationindistancebetweenashaftanditssupportbearingLongfunctionallifeAbsenceofmechanicalpartsLackofphysicalcontactbetweensensorandthesensedobjectWhentouseaProximitySensor/TransmitterIfneedingtomeasurethefollowing:RadialvibrationAxialthrustposition/vibrationSh

6、aftradialpositionVibrationAmplitudeandPhaseAngleEccentricityPhaseReferenceWhentouseaProximitySensor/TransmitterCont’dRadialVibrationVibrationinadirectionperpendiculartothecenterlineofashaftorrotor.UsedforindicatingbearingconditionMeasuringmachinemalfunction:RotorimbalanceMi

7、salignmentShaftcrackPotentialbearingfailureWhentouseaProximitySensor/TransmitterCont’dAxialThrustPosition/VibrationVibrationinthedirectionofthecenterlineofashaftorrotor.DeterminingthrustbearingwearShaftradialpositionDeterminingshaftpositionrelativetorotoramplitudeangleIndic

8、atorofrotorstabilityandshaftalignmentVectormonitoringWhentouseaProximitySensor/Tra