DIN EN 24672-1993 橡胶软管和塑料软管.低于环境温度的弯曲试验
时间:2024-05-09 03:52:01 来源: 标准资料网 作者：标准资料网 阅读：9763
【英文标准名称】:Rubberandplasticshoses;sub-ambianttemperatureflexibilitytests(ISO4672:1988);GermanversionEN24672:1993
【原文标准名称】:橡胶软管和塑料软管.低于环境温度的弯曲试验
【标准号】:DINEN24672-1993
【标准状态】:作废
【国别】:德国
【发布日期】:1993-04
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:橡胶制品;塑料制品;柔性;温度;挠性管道;冷弯;机械试验;橡胶软管;塑料软管;试验;冷弯性能;温度承受能力;弯曲试验;环境温度;挠性
【英文主题词】:ambienttemperature;plasticshose;flexible;cold-bendbehaviour;temperatureloadability;bendtesting;mechanicaltesting;rubberhoses;testing;flexiblepipes;flexibility;temperature;plasticsproducts;rub
【摘要】:
【中国标准分类号】:G33;G42
【国际标准分类号】:2760
【页数】:5P;A4
【正文语种】:德语
【英文标准名称】:MedicaldiagnosticX-rayequipment-Radiationconditionsforuseinthedeterminationofcharacetristics
【原文标准名称】:医用诊断X射线设备.测定特性时使用的辐射条件
【标准号】:IEC61267-2005
【标准状态】:现行
【国别】:国际
【发布日期】:2005-11
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/SC62C
【标准类型】:()
【标准水平】:()
【中文主题词】:特性;定义;测定;诊断;诊断设备;电气工程;电医学;医疗设备;医疗放射照相术;医学科学;医疗技术学;照射疗法;辐射;辐射防护;辐射学;X射线仪;X射线设备;X射线装置;X射线
【英文主题词】:Characteristics;Definitions;Determination;Diagnosis;Diagnosticequipment;Electricalengineering;Electromedicine;Irradiationcondition;Medicalequipment;Medicalradiography;Medicalsciences;Medicaltechnology;Phototherapy;Radiation;Radiationprotection;Radiology;X-rayapparatus;X-rayequipment;X-rayplants;X-rays
【摘要】:ThisInternationalStandardappliestotestprocedureswhich,forthedeterminationofcharacteristicsofsystemsorcomponentsofmedicaldiagnosticX-RAYEQUIPMENT,requirewell-definedRADIATIONCONDITIONS.Exceptformammography,thisstandarddoesnotapplytoconditionswherediscontinuitiesinradiationabsorptionofelementsaredeliberatelyusedtomodifypropertiesoftheRADIATIONBEAM(forexamplebyrareearthfilters).ThemostcompletespecificationofRADIATIONFIELDSisgivenbythespectraldistributionofthephotonfluence.SincethemeasurementofX-RAYSPECTRAisademandingtask,thisstandardexpressesRADIATIONQUALITIESintermsoftheX-RAYTUBEVOLTAGE,thefirstandsecondHALFVALUELAYER.InthecaseofRADIATIONCONDITIONS,specificationsareperformedadditionallyintermsofPHANTOMpropertiesandgeometry.TheattempttocharacterizeaspectraldistributionjustbymeansoftheX-RAYTUBEVOLTAGE,thefirstandpossiblythesecondHALF-VALUELAYERisthusacompromisebetweenthemutuallyconflictingrequirementsofavoidingexcessiveeffortsforestablishingaRADIATIONQUALITYandofthecompleteabsenceofanyambiguityinthedefinitionofaRADIATIONQUALITY.DuetodifferencesinthedesignandtheageofX-RAYTUBESintermsofanodeangle,anoderougheningandINHERENTFILTRATION,twoRADIATIONQUALITIESproducedatagivenXRAYTUBEVOLTAGEhavingthesamefirstHALF-VALUELAYERcanstillhavequitedifferentspectraldistributions.GiventheinherentambiguityinthecharacterizationofRADIATIONQUALITY,itisessentialthatfurthertolerancesintroducedbyallowingcertainrangesofvalues,e.g.forX-RAYTUBEVOLTAGEandfirstHALF-VALUELAYER,mustbesufficientlysmallnottojeopardisetheunderlyingobjectiveofthisstandard.ThisstandardistoensurethatmeasurementsofthepropertiesofmedicaldiagnosticequipmentshouldproduceconsistentresultsifRADIATIONQUALITIESorRADIATIONCONDITIONSincompliancewiththisstandardareused.Toachievethisobjective,certaindegreesoffreedominthewayinwhichaRADIATIONCONDITIONcouldbeestablishedintheframeworkofthefirsteditionofthisstandardhavebeenremoved.TheessentialrestrictionintroducedinthissecondeditionisthattheX-RAYTUBEVOLTAGEismeasuredandsettoits'correct'value.ThesecondstepistoattempttoestablishtheprescribedfirstHALF-VALUELAYERbyaddingintothebeamthenecessaryamountofADDITIONALFILTRATION.IftheINHERENTFILTRATIONprovidedbytheX-RAYTUBEaloneissostrongthattheHALF-VALUELAYERoftheRADIATIONBEAMemergingfromtheX-RAYTUBEASSEMBLYassuchislargerthanthattobeestablished,theX-RAYTUBEASSEMBLYusedisnotsuitedforproducingthedesiredRADIATIONCONDITION.ThismayoccuriftheanodeangleoftheX-RAYTUBEASSEMBLYistoosmalland/orinthecaseofexcessiveanoderougheningduetotubeageing.IntheapproachoutlinedinthetwoprecedingparagraphstheX-RAYTUBEVOLTAGEplaysadecisiverole.Itisthereforeessentialthatthe‘correct’X-raytubevoltageischosenirrespectiveofthetypeofhighvoltagegeneratorconnectedtotheX-RAYTUBE.ThewayinwhichthisisrealizedinthisstandardisbymeasuringtheX-RAYTUBEVOLTAGEintermsofthePRACTICALPEAKVOLTAGE.ThisquantityisaweightedmeanofallvaluesoftheX-RAYTUBEVOLTAGEoccurringduringanexposure.TheweightingisdoneinsuchawaythatidenticalvaluesofthePRACTICALPEAKVOLTAGEgiveidenticalvaluesofthelowlevelcontrastonaradiographirrespectiveofthewaveformsuppliedbythegenerator.
【中国标准分类号】:C43
【国际标准分类号】:11_040_50
【页数】:94P.;A4
【正文语种】:英语
【英文标准名称】:Aerospaceseries-Aircraftgroundsupportequipment-Specificrequirements-Airconditioningequipment
【原文标准名称】:航空航天系列.飞行器地面支持设备.特殊要求.空调设备
【标准号】:BSEN12312-17-2004
【标准状态】:作废
【国别】:英国
【发布日期】:2004-08-05
【实施或试行日期】:2004-08-05
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:组件;飞行器;作标记;安全要求;运输;航空航天运输;定义;空调;飞行器地面支持设备;保健;危害;空调器;供气系统;地面设备;空中运输;航空设备;工作场所安全;规范(验收);用户信息;操作说明书
【英文主题词】:Aeronauticalequipment;Aerospacetransport;Airconditioners;Airconditioning;Airsupply;Airsupplysystems;Airtraffic;Airtransport;Aircraft;Aircraftgroundsupportequipments;Components;Definition;Definitions;Groundequipment;Hazards;Healthprotection;Marking;Operatinginstructions;Safetyrequirements;Spacetransport;Specification(approval);Transport;Userinformation;Workplacesafety
【摘要】:ThisdocumentspecifiesthetechnicalrequirementstominimisethehazardslistedinClause4whichcanariseduringthecommissioning,operationandmaintenanceofspecificairconditioningequipmentforaircraftgroundsupport,whencarriedoutinaccordancewiththespecificationsgivenbythemanufacturerorhisauthorisedrepre-sentative.Italsotakesintoaccountsomeperformancerequirementsrecognisedasessentialbyauthorities,aircraftandgroundsupportequipment(GSE)manufacturersaswellasairlinesandhandlingagencies.Thisdocumentisnotdealingwiththehazardsofairconditioningmachineryitself,butwiththeequipmentforthespecificapplicationofsuchmachineryasaircraftgroundsupportequipment.Thisdocumentappliestoalltypesofmoveableairconditioningequipmentwithevaporatorsforcooling,heatingandventilatingtheinteriorofcivilaircraftfromoutside(groundairconditioning).ExamplesseeAnnexA.Italsoappliestoairconditioningunitsandaccessories,e.g.hoses,couplers,mountedonmoveablepartsofpassengerboardingbridgesand/ormoveablepartsoffixedcentralizedaircraftairconditioningequipment,whetherpassengerboardingbridgemountedorrampintegrated.ThisdocumentdoesnotestablishrequirementsfornoiseandvibrationNoiseandvibrationaredealtwithrespectivelyinprEN1915-4andprEN1915-3..Thisdocumentisnotdealingwithhazardsinrespecttoastandardautomotivechassisandthetrafficontheapron.ThisPartofEN12312isnotapplicabletoairconditioningequipment,whichismanufacturedbeforethedateofpublicationofthisstandardbyCEN.
【中国标准分类号】:V27
【国际标准分类号】:49_100
【页数】:18P.;A4
【正文语种】:英语