基本信息
标准名称: | 内燃机车冷却液分析方法 第7部分:钙、镁离子总量的测定 |
英文名称: | Methods for analysis of diesel locomotive coolants Part 7:Determination of calcium and magnesium |
中标分类: |
铁路 >>
机车 >>
内燃机车 |
ICS分类: |
化工技术 >>
分析化学 >>
化学分析
|
发布日期: | 2006-08-07 |
实施日期: | 2007-01-01 |
首发日期: | |
作废日期: | |
出版日期: | |
页数: | 6 |
适用范围
本部分规定了内燃机车冷却液中钙、镁离子总含量测定的原理、采样、分析步骤及精密度等。本部分适用于钙、镁离子总含量0.01mg/L~5.00mg/L的水和冷却液的测定。
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 机车 内燃机车 化工技术 分析化学 化学分析
【英文标准名称】:Non-destructivetesting-Evaluatingperformancecharacteristicsofultrasonicpulse-echotestingsystemswithouttheuseofelectronicmeasurementinstruments
【原文标准名称】:无损检验.不使用电子测量仪器评价超声脉冲回波检验系统的性能特征
【标准号】:ISO18175-2004
【标准状态】:现行
【国别】:国际
【发布日期】:2004-03
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC135
【标准类型】:()
【标准水平】:()
【中文主题词】:测量技术;超声检验;超声试验系统;测量仪器;试验;测量系统;无损检验;脉冲回波;超声错误检测
【英文主题词】:Measuringinstruments;Measuringsystems;Measuringtechniques;Non-destructivetesting;Pulsereplies;Testing;Ultrasonicflawdetector;Ultrasonictestsystems;Ultrasonictesting
【摘要】:ThisInternationalStandarddescribesproceduresforevaluatingthefollowingperformancecharacteristicsofultrasonicpulse-echoexaminationinstruments:—horizontallimitandlinearity;—verticallimitandlinearity;—resolution-entrysurfaceandfarsurface;—sensitivityandnoise;—accuracyofcalibratedgaincontrols.RelevantterminologycanbefoundinASTMTerminologyE1316andIEEEStandard100.Evaluationofthesecharacteristicsisintendedtobeusedforcomparinginstrumentsor,byperiodicrepetition,fordetectinglong-termchangesinthecharacteristicsofagiveninstrumentthatmaybeindicativeofimpendingfailure,andwhich,ifbeyondcertainlimits,willrequirecorrectivemaintenance.Ultrasonicexaminationinstrumentsusingpulsed-wavetrainsandA-scanpresentation(rforvideo)mayalsobeevaluated.Theproceduresareapplicabletoshop-orfield-conditionsandadditionalelectronicmeasurementinstrumentationisnotrequired.ThisInternationalStandardestablishesnoperformancelimitsforexaminationsystems;ifsuchacceptancecriteriaarerequired,thesemustbespecifiedbytheusingparties.Whereacceptancecriteriaareimpliedhereintheyareonlyforthesakeofexampleandaresubjecttomoreorlessrestrictivelimitsimposedbycustomer'sandenduser'scontrollingdocuments.Thespecificparameterstobeevaluated,conditionsandfrequencyoftest,andreportdatarequired,mustalsobedeterminedbytheuser.ThisInternationalStandardmaybeusedfortheevaluationofacompleteexaminationsystem,includingtransducer,instrument,interconnections,fixturesandconnectedalarmandauxiliarydevices,primarilyincaseswheresuchasystemisusedrepeatedlywithoutchangeorsubstitution.ThisInternationalStandardisnotintendedtobeusedasasubstituteforcalibrationofasystemtoinspectanygivenmaterial.Requiredtestapparatusincludesselectedreferenceblocksandaprecisionexternalattenuator(wherespecified)inadditiontotheinstrumenttobeevaluated.Precautionsrelatingtotheapplicabilityoftheproceduresandinterpretationoftheresultsareincluded.Alternateprocedures,suchasexamplesdescribedinthisInternationalStandard,orothers,mayonlybeusedwithcustomerapproval.
【中国标准分类号】:H26
【国际标准分类号】:19_100
【页数】:22P.;A4
【正文语种】:英语