版权说明:本文档由用户提供并上传,收益归属内容提供方,若内容存在侵权,请进行举报或认领
文档简介
AtexLoadCellInstructionManual
LoadcellInstructionManual
ZHONGHANGELECTRONICMEASURINGINSTRUMENTSCO.LTD.
Add:No.66ZhongyuanRoad,Puzhen,Hanzhong,723007,Shaanxi,China
Tel:86-916-2386032
Fax:86-916-2577213
E-mail:admin@
Issued:October1st2007Implemented:October1st2007ZHONGHANGELECTRONICMEASURINGINSTRUMENTSCO.LTD.
Specificationsanddimensionsaresubjecttochangewithoutnoticeanddonotconstituteanyliabilitywhatsoever.
ZemicEuropeB.V.Leerlooierstraat84871ENEtten-LeurTheNetherlands
Nr.2015.12AtexLoadcellinstructionmanualRev2
1/7
T:+31765039480F:+31765039481info@zemic.nl
www.zemic.nl
AtexLoadCellInstructionManual
InstructionManualforUsingProducts1.Introduction
TheseInstructionManualrefertoZHONGHANGELECTRONICMEASURINGINSTRUMENTSCO.,LTD.Transducersloadcellsforpotentiallyexplosiveatmospheres.TheseloadcellsarecertifiedaccordingtoATEXDirective94/9/EC.Pleasereadthewholeinstructionbeforetakingloadcellsintoservice.Neverworkonloadcellsforpotentiallyexplosiveatmospheresifyoudohavetheknowledge,competenceorauthorizationtodoso.Loadcellsmayonlybeusedfortheirintendedpurposeandinthecircumstancesspecified.ZHONGHANGELECTRONICMEASURINGINSTRUMENTSCO.,LTD.Transducerscannotbeheldliablefordamageandinjuriesresultingfromuseotherthanthoseintended.Loadcellsmustonlybeusedintheircorrecttechnicalconditionandwhilstconformingtotheinstructionsofrelevantapplicationnotes.
1.1ProductDescription
Loadcellconvertmechanicalforceintoanelectricalsignal.Theelementdeformselasticallywhensubjectedtoaweight.ZHONGHANGELECTRONICMEASURINGINSTRUMENTSCO.,LTD.Transducershasloadcellswhicharecertifiedforuseinapotentiallyexplosiveatmosphere.Theseloadcellshaveaspecialmark:
1.2ProductsLabelling
1.2.1 InternalLabelinEnglish:
Note1:ModelandCapacityandClass.
Note2:ZEMICisthetrademarkofZHONGHANGELECTRONICMEASURINGINSTRUMENTSCO.,LTD.
1.2.2 ExternalLabelinEnglish:
Note1:Model.
Note2:Barcode.
Specificationsanddimensionsaresubjecttochangewithoutnoticeanddonotconstituteanyliabilitywhatsoever.
ZemicEuropeB.V.Leerlooierstraat84871ENEtten-LeurTheNetherlands
Nr.2015.12AtexLoadcellinstructionmanualRev2
2/7
T:+31765039480F:+31765039481info@zemic.nl
www.zemic.nl
AtexLoadCellInstructionManual
1.2.3FMandATEXandCSALabelingSeetheattachment1.
1.3ProductidentificationandtechnicalSpecifications
LoadcellspecificinformationisprintedontheCalibrationCertificate.Ifthiscertificateisnot
included,contactyoursupplier.CablecolourcodesshouldbecheckedagainsttheCalibrationCertificate.
2.Specialconditionsforsafeuse
IfaloadcellisusedasEExiaorEExib,thenitmustbeconnectedtocertifiedintrinsicallysafecircuits.Terminalsusedinbetween,mustcomplytoEN60079-11.ForEExnA,1D,2D,or3Duseofloadcellsthefreeendofthepermanentlyconnectedcablemustbeconnectedoutsidethehazardousareaor,wheninsidethehazardousarea,inanenclosurewithasuitabletypeofexplosionprotectionandinaccordancewiththerequirementsofthetypeofprotectionapplied.Fortheparametersoftheintrinsicallysafecircuits,refertotheelectricaldataattheinstallingdrawing521302.
3.Installation
Installinhazardous(classified)locations/explosiveatmospheresperdrawing521302.
Ricktolife!:Neveruseloadcellsinapotentiallyexplosiveatmospherewhicharenotcorrectlycertified.Useshunt-diodebarriersforloadcellinstallationinpotentiallyexplosiveatmospheres.Whenusingmorethanonebarrierchannelinacircuit,ensurethatthecombinationofvoltagesandcurrentscanbesafelyappliedinthatparticularhazardousarea.InstallloadcellsinaccordancewiththeapplicableEU.Thecircuitistobeconsideredasbeingconnectedtoearthduetosurgeprotection.
Topreventloadcellfrombeingdamagedduringinstallation,itisstronglyrecommendedtousedummyloadcellsormountingassembliesthatcanbe“locked”.Loadcellsshouldbehandledwithcare,especiallythosewithalowratedcapacityorwithmetalbellowsconstruction.Whenconnectingpolarizedshunt-diodebarriers,donotconnectthewrongpolarity.Itwilldestroythebarrier!Cablesusedmustalwaysbesuitablefortheenvironmentinwhichtheyaretobeused.Manyindicatorscompensateforlinevoltagelossesbyincreasingtheirvoltageoutput.Donotpassthecompensationlimitoftheindicator!Nevercarryloadcellsbytheircables.
Avoidedelectricweldingafterinstallationofloadcells.Ifweldingisnecessaryandtheloadcellscannotberemovedthendisconnecteachindividualloadcellcablefromthejunctionboxormeasuringdevice.Inordertoavoidacurrentpaththroughtheloadcells,placeanearthingclampinthecloseproximityoftheweld.Furthermore,connectaflexiblecopperleadovereachloadcell.Neverusemountingboltstopullunevensurfacestogether-useshimsasappropriate.Neveruseexcessiveforcewhenfittingortighteningmountingboltsorhardware,especiallyonlowcapacitycells.Donottwist“S”cellswhentighteningthreadedfittings.
4.UseandMaintenance
4.1Pleasenotethatloadcellsmaybedamagedbecauseof(shock)overloading,lightningstrikesorheavysurges.Incurrent,chemicalormoistureingress,mishandling(dropping,liftingwithcable,etc),vibration,seismic,seismiceventsorinternalcomponentmalfunction,Inspectloadalsobeforeandaftertheseasons.Givespecialcareandattentiontocriticalareasoftheloadcellsuchasmetalbellows,sealsetc.Regularlyinspectforcorrosiondamagetotheloadcellandmountinghardware.Ifpractical,carryoutcleaningandanyremedialwork(paintorotherprotectivecoating).Donotallowbuild-upofdebrisaroundloadcellsormounts.
Specificationsanddimensionsaresubjecttochangewithoutnoticeanddonotconstituteanyliabilitywhatsoever.
ZemicEuropeB.V.Leerlooierstraat84871ENEtten-LeurTheNetherlands
Nr.2015.12AtexLoadcellinstructionmanualRev2
3/7
T:+31765039480F:+31765039481info@zemic.nl
www.zemic.nl
AtexLoadCellInstructionManual
4.2MaintenanceToolsandtheessentialcharacteristicsoftoolswhichmaybefittedtotheequipmentcontains:
a)A41/2digitalavometertomeasureresistance,voltage,currentandcapacitance,etc.
b)Anall-aroundcompositescrewdrivertoopenintegratedweighinginstruments,thespecificationincludes4’’,6’’,8’’;
c)Atweezers,thespecificationincludes6”,8”;
d)Alongnosedpliers,thespecificationincludes6’’,8’’;
e)A30winternalheatingtypeearthingelectriciron,rosinandsolderingwires.f)Apairofscissors,thespecificationincludes5’’,7’’;
g)Anassortedfile,thespecificationincludes4’’,6’’;h)AstandbyLoadcellandasetofweights.
4.3MaintenanceandServiceProceedings
Inordertoensuretheinstruments,scaletobeusednormallyandprolongtheirlifetime,wemustobeytothefollowingrules:
(1)Donotuseindicatorsunderstrongsunlight,theplacingareashouldbeflat(2)WhenLoadcellisputteditinaplacefullofdusts,pleaseremovedusttermly.(3)Weight(includingtareweight)forbidsexceedingmaximumratedamount.
(4)Ifthemachinecan’tbeusedforalongtime,powersupplyswitchshouldbetakenofffrompowersupplywhichcanbeverygoodconnectiontoearth.
(5)Forbidusingstrongsolvent(e.g.)tocleanshell.(6)Forbidsoakingwaterinindicator.
(7)Ifthereissomeproblemoccurringintheprocessofusing,pleasecutpowersupplyandstoptryingifheisnon-professionaloperatorsandgiveindicatortorepairinprofessionaloffice.
(8)Don’tchangecircuitorsomeelectronicpartsofanapparatusmodelsconnectedwithcircuit.4.4Repairmenandmaintainingservice
(1)Ourcompanycanprovideoneyearmaintainingguaranteeserviceforsellingproducts(includingsomeplatformscale,tablescale,truckscale,vehiclescaleandsoon.Themaintainingguaranteeservicebeginsfromsellingdayandeachyearourcompanywillprovidetechnicalserviceaftersalesforalltheproductssometime.
(2)Duringmaintainingguaranteeservicetimeifourproductsexistproblemswhicharecausednotbycustomers’wrongoperationornon-forcemajeurenaturaldisaster,ourcompanywillhaveresponsibilitytorepair.
(3)Ourcompanydoesn’tagreecustomerstorepairbythemselvestoavoidexpandproblems.Ifduetocustomers’repairmanoccursextraproblemsevenitisinmaintainingguaranteeservicetimeourcompanywillnotprovidefreeservice.
(4)Generallyspeaking,whennon-loadcellscustomersornon-weighinginstrumentcustomersuseourproductsiftheproblemsoccur,theproductsshouldbesenttocompanyorinformcompanyengineers’problemsconditionbyfaxtosolvetheprobleminshorttimeandcorrectmethods.
Specificationsanddimensionsaresubjecttochangewithoutnoticeanddonotconstituteanyliabilitywhatsoever.
ZemicEuropeB.V.Leerlooierstraat84871ENEtten-LeurTheNetherlands
Nr.2015.12AtexLoadcellinstructionmanualRev2
4/7
T:+31765039480F:+31765039481info@zemic.nl
www.zemic.nl
AtexLoadCellInstructionManual
5.FailureAnalysisandguidanceonpotentialmisuse
5.1FailurePhenomenon
Afterassemblyofascale,thereadingofemptyloadisbigandhardtosettozero.
Weighingcapacityerrorvariesdirectlywiththeincreaseofload,useavometertomeasureinputandoutputimpedance,onelineorseverallinesandotherleadwires’resistancesareverylarge.
Useavometertomeasureinputandoutputimpedance,theresistancesare1100-1410Ω(bridgeresistance700Ω)or500-710Ω(bridgeresistance350Ω)
Lowersensitivity,poorinterference-resistant,widespreadfluctuationofweighingcapacitydata.
Nozeroreturn
5.2Causeanalysis
Overloadorimpactmakesloadcellstodeformintotheplasticwhichcausespermanentdeformation.
Loadcells’outgoinglinesorconnectionterminalsarebeingstroke,pressedorstretchedandmakethecircuitinthewirebrake.
Beinglightedorstrokebystrongcurrentorvoltageimpulse,bridgearmisburned.
Theshieldconnectedtootherresources(withcharge).
Thespeedonvehiclescalemaybetoofast.
5.3Guidance
Raiseandletdownthescalecarefullyandslowly;levelupthescaleseveraltimesaftermountingandletthebearingpointsloadcapacityclosetoeachother,thusavoidabovehalf-capacityloadtosomebearingpointorseveralbearingpointswhenbeingsuspended.Theoutgoinglineshouldbeprotectedwithspringsheath,thusavoidtheleadwirefrombeingextendedorpressedtoslot.Becauseoffoundationpit,dotrialassemblymanytimesandremoveloadcellsifpossible.
Adaptup-side-downmounting,thatistosay,backwardundertheweighingplatform;giveprioritytogroundmountingbysettingslopetotwoends.Ifdesigningfoundationpit,blowingpipediametershouldmeetthedemandforwaterdischargeonrainydays.
Iftheshieldisnotneeded,packitwithinsulatingtapeandputitintojunctionboxtoavoidthetouchwithbridge-typeconnectionterminal.
Thisspeedshouldbelimitedwithin10km/h.
Ricktolife!:Undernocircumstancesshouldfaultlocationandtrouble-shootingbeattemptedinahazardousareawherethereisdangerofexplosion.ZHONGHANGELECTRONICMEASURINGINSTRUMENTSCO.,LTD.Transducersauthorizedpersonnelmayonlycarryouttrouble-shootingandrepair.Shouldaloadcellceasetofunction,donotjustreconnect:Mechanicalfailuremayhavecatastrophiceffects.
NeveruseaMegohmmetertomeasureinputoroutputresistance,astheynormallyoperateatvoltagesfarinexcessofmaximumloadcellexcitationvoltages!
Specificationsanddimensionsaresubjecttochangewithoutnoticeanddonotconstituteanyliabilitywhatsoever.
ZemicEuropeB.V.Leerlooierstraat84871ENEtten-LeurTheNetherlands
Nr.2015.12AtexLoadcellinstructionmanualRev2
5/7
T:+31765039480F:+31765039481info@zemic.nl
www.zemic.nl
AtexLoadCellInstructionManual
6.Thestandards
Title
ElectricalEquipmentforUseinHazardous(Classified)Locations,GeneralRequirements
IntrinsicallySafeApparatusandAssociatedApparatusforUseinClassI,II,&III,Division1andClassI,Zone0&1Hazardous(Classified)Locations
NonincendiveElectricalEquipmentforUseinClassIandII,Division2,andClassIII,Division1and2Hazardous(Classified)Locations
ElectricalandElectronicTest,MeasuringandProcessControlEquipment
Degreesofprotectionprovidedbyenclosures(IPcode)IntrinsicallySafeandNonincendiveEquipmentforuseinHazardousLocations
NonincendiveElectricalEquipmentforuseinClassI,Division2HazardousLocations
SafetyRequirementforElectricalEquipmentforMeasurement,ControlandLaboratoryuse–Part1GeneralRequirements
Degreesofprotectionprovidedbyenclosures(IPcode)
ElectricalApparatusforExplosiveGasAtmospheres–Part11:Intrinsicsafety“i”
ElectricalApparatusforExplosiveGasAtmospheres–Part0:GeneralRequirements
ElectricalApparatusforExplosiveGasAtmosphereTypeofProtection“n”
Electricalapparatusforexplosivegasatmospheres–Part0:Generalrequirements
Explosiveatmospheres–Part11:Equipmentprotectionbyintrinsicsafety‘i’
Electricalapparatusforexplosivegasatmospheres–Part15:Construction,testandm
温馨提示
- 1. 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
- 2. 本站的文档不包含任何第三方提供的附件图纸等,如果需要附件,请联系上传者。文件的所有权益归上传用户所有。
- 3. 本站RAR压缩包中若带图纸,网页内容里面会有图纸预览,若没有图纸预览就没有图纸。
- 4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
- 5. 人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对用户上传分享的文档内容本身不做任何修改或编辑,并不能对任何下载内容负责。
- 6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
- 7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。
最新文档
- 餐饮美食租赁餐厅咖啡馆租赁合同示范
- 急救员聘用合同规定
- 简单的劳动合同示例范文
- 学校岗位聘用合同
- 滑爽剂行业相关投资计划提议范本
- 税法考点巩固
- 卖沙子购销合同范本
- 食堂供货商供货协议书
- 供应商供货协议书范本
- 自贡市第四人民医院消化内科2023年护理年终考核(N0-N1)附有答案附有答案
- 四川省绵阳巿三台中学2025届高一下数学期末复习检测模拟试题含解析
- 2024年全国安全生产月网络知识答题试题库500题(含各题型)
- 2024全屋定制的合同范本
- 2024年石家庄北国人百集团有限责任公司招聘笔试冲刺题(带答案解析)
- 六年级下学期小升初模拟考试英语试卷共七套
- 校医的工作职责和任务.ppt
- 主动脉夹层的护理42194.ppt
- 音乐作文课件01.ppt
- 在2020年学校宣传思想工作会议上的讲话(大学高校)
- 三世演禽命理秘书.doc
- 违章停车处罚流程是什么?.doc
评论
0/150
提交评论