【英文标准名称】:ElectromagneticcompatibilityandRadiospectrumMatters(ERM)-Wirelessmicrophonesinthe25MHzto3GHzfrequencyrange-Part1:technicalcharacteristicsandmethodsofmeasurement(V1.4.2).
【原文标准名称】:电磁适应性和无线电频谱事项(ERM).25MHz-3GHz频率范围用无线扩音器.第1部分:技术特性和测量方法(V1.4.2)
【标准号】:NFZ84-422-1-2011
【标准状态】:现行
【国别】:法国
【发布日期】:2011-12-01
【实施或试行日期】:2011-12-30
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:EMC;Emission;ETSI;Interferingemissions;Telecommunicationnetworks;Telecommunicationsystems;Telecommunications;Telephonenetworks
【摘要】:
【中国标准分类号】:L06;M36
【国际标准分类号】:33_100_10
【页数】:62P;A4
【正文语种】:其他
基本信息
标准名称: | 自由锻锤型式与基本参数 |
中标分类: |
机械 >>
通用加工机械与设备 >>
锻压机械 |
发布日期: | |
实施日期: | 2003-06-01 |
首发日期: | |
作废日期: | |
出版日期: | |
适用范围
没有内容
前言
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目录
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引用标准
没有内容
所属分类: 机械 通用加工机械与设备 锻压机械
【英文标准名称】:TestMethodforEvaluatingtheOxidativeResistanceofMultilayerPolyolefinTubingtoHotChlorinatedWater
【原文标准名称】:评价多层聚烯烃管耐氯化热水氧化性的试验方法
【标准号】:ANSI/ASTMF2330-2004
【标准状态】:作废
【国别】:美国
【发布日期】:2004
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;多层;氯化的;水;表面处理;管道;热水;评定;耐力;聚烯烃
【英文主题词】:Chlorinated;Evaluations;Hotwater;Multi-layer;Polyolefins;Resistance;Surfacetreatment;Testing;Tubing;Water
【摘要】:Thistestmethoddescribesthegeneralrequirementsforevaluatingthelong-term,chlorinatedwater,oxidativeresistanceofmultilayertubingwhichincludesaninnerlayerofapolyolefinmaterialsuchasPEorPEX(forexample,seeSpecificationF1986orF1281).Thistestmethodoutlinestherequirementsofapressurizedflow-throughtestsystem,testpressure,test-fluidcharacteristics,failuretype,anddataanalysis.Thistestmethodisvalidforpolyolefinmaterialsthatarestabilizedwithhinderedphenolictypeanti-oxidantsthatshallbeanalyzedusingtheOxidativeInductionTime(OIT)method(forexample,D3895).Guidelinesandrequirementsfortesttemperatures,testhoopstresses,andothertestcriteriashallbestablishedbypriortestingofmultilayertubingandsolid-wallPEXandPEtubing.Otherrelatedsystemcomponentsthattypicallyappearinamultilayertubinghot-and-coldwaterdistributionsystemshallbeevaluatedwiththemultilayertubing.Whentestingmultilayertubingandfittingsasasystem,itisrecommendedthattheanticipatedend-usefittingtype(s)andmaterial(s)beincludedinthetestcircuitsinceitisknownthatsomefittingtypesandmaterialscanaffectfailuretimes.Specimensusedshallberepresentativeofthepipingproduct(s)andmaterial(s)underinvestigation.Note2-Theproceduresdescribedinthistestmethod(withsomemodificationsoftesttemperaturesorstresses,orboth)havebeenusedtoevaluatepipesmanufacturedfrompolybutylene(PB),polyethylene(PE),polypropylene(PP),cross-linkedpolyethylene(PEX),andmultilayer(polymer-metalcomposite)pipes.Thistestmethodisapplicabletomultilayertubingandsystemsusedfortransportofpotablewatercontainingfree-chlorinefordisinfectingpurposes.Theoxidizingpotentialofthetest-fluidspecifiedinthistestmethodexceedsthattypicallyfoundinpotablewatersystemsacrosstheUnitedStates.Thevaluesstatedincm-gramunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationpurposes.Thefollowingprecautionarycaveatpertainsonlytothetestmethodportion,Section12,ofthisspecification.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G33
【国际标准分类号】:23_040_99;25_220_60
【页数】:
【正文语种】:英语