基本信息
| 标准名称： | BX1-34型信号变压器 |
| 中标分类： |
铁路 >>
铁路信号 >>
信号器材 |
| 发布部门： | 中华人民共和国铁道部 |
| 发布日期： | 1985-04-02 |
| 实施日期： | 1985-07-01 |
| 首发日期： | |
| 作废日期： | |
| 提出单位： | 西安铁路信号工厂科研所 |
| 归口单位： | 西安铁路信号工厂科研所 |
| 起草单位： | 天水铁路信号工厂、西安铁路信号工厂科研所 |
| 起草人： | 周菊英、张江林、韩涛、赵森 |
| 出版社： | 中国铁道出版社 |
| 出版日期： | 1985-07-01 |
| 页数： | 8页 |
适用范围
本标准适用于BX1-34型号变压器。变压器用于透镜式色灯信号机的点灯电路。
前言
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目录
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引用标准
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所属分类： 铁路 铁路信号 信号器材
【英文标准名称】:StandardPracticeforRubber-Preparation,Testing,Acceptance,Documentation,andUseofReferenceMaterials
【原文标准名称】:标准物质的制备、试验、验收、文献工作和使用
【标准号】:ASTMD4678-2004(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:2004
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D11.20
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:commonsourcereferencematerial(CRM);industryreferencematerial(IRM);referencematerial;Accelerators--rubber;Acceptancecriteria/testing--rubber;Acceptedreference(AR)value;Carbonblack;Carbonblacksampling;Carboncontent;Commonsourcere
【摘要】:Referencematerialsarevitallyimportantinproductandspecificationtesting,inresearchanddevelopmentwork,intechnicalservicework,andinqualitycontroloperationsintherubberandcarbonblackindustries.Theyareespeciallyvaluableforrefereepurposes.Categories,Classes,andTypesofReferenceMaterials(RM):Referencematerialsaredividedintotwocategories:IndustryReferenceMaterials(IRM)8212;Materialsthathavebeenpreparedaccordingtoaspecifiedproductionprocesstogenerateauniformlot;theparametersthatdefinethequalityofthelotareevaluatedbyaspecifiedmeasurementprogram.Common-SourceReferenceMaterials(CRM)8212;Materialsthathavebeenpreparedtobeasuniformaspossiblebutdonothaveestablishedproperty(parameter)values;theknowledgeofacommonorsinglesourceissufficientforcertainlesscriticalapplications.Industryreferencematerials(IRMs)aredividedintoadditionalclassesandtypesaccordingtothemethodofevaluatingthelotparametersandaccordingtotheproductionprocessforgeneratingthelotmaterial.Theseareexplainedmorefully(refertoAnnexA3andAnnexA4formoredetailsonthediscussioninSection3).Thefollowinglotparametersareimportantforreferencematerialuse:AcceptedReferenceValue(ARValue)8212;AnaverageIRMpropertyorparametervalueestablishedbywayofaspecifiedtestprogram.TestLotLimits(TLLimits)8212;Thesearelimitsdefinedasx00B1;3timesthestandarddeviationofindividualIRMtestresultsacrosstheentirelotforthepropertyorparameter(s)thatdefineslotquality;themeasurementsareconductedinthelaboratoryoftheorganizationproducingtheIRM.Althoughthelimitsasdefinedin3.2.3.2aregivenintermsofx00B1;3timesthestandarddeviation,therejectionofindividualportionsofthelotasbeingoutlierornon-typicalportionsinassessingthehomogeneityofthelotisdoneonthebasisofx00B1;2timestheappropriatestandarddeviation,thatis,onthebasisofa95%confidenceinterval.SeeAnnexA3andAnnexA4formoreinformationandtheevaluationprocedures.AllIRMshaveanARvalueandTLlimits;howevertheARvaluemaybeobtainedinoneoftwowaystoproduceoneoftwoclassesofARvalues:GlobalARValue8212;ThisARvalueisobtainedfromaninterlaboratorytestprogramwherethewordx201C;globalx201D;indicatesanaveragevalueacrossmanylaboratories.LocalARValue8212;ThisisanARvalueobtainedinonelaboratoryoratonelocation,usuallythelaboratoryresponsibleforpreparationofthehomogeneouslot.AnadditionalparameterisofimportanceforIRMsthathaveaglobalARvalue:Between-LaboratoryLimits(BL)8212;ThegroupoflaboratoriesthatconductinterlaboratorytestingtoestablishanAR-valuearenotequivalenttoasystemorpopulationtypicalofindustrialproductionoperationsthatusetheusualx00B1;3standarddeviationlimits.Suchproductionoperationsaresystemsthathavebeenpurgedofallassignablecausesofvariationandareinastateofx2018;statisticalcontrolx2019;