ASTM D2597-1994(2004) 含有二氧化氮和二氧化碳的馏除甲烷烃类液体混合物的气相色谱分析标准试验方法

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【英文标准名称】:StandardTestMethodforAnalysisofDemethanizedHydrocarbonLiquidMixturesContainingNitrogenandCarbonDioxidebyGasChromatography
【原文标准名称】:含有二氧化氮和二氧化碳的馏除甲烷烃类液体混合物的气相色谱分析标准试验方法
【标准号】:ASTMD2597-1994(2004)
【标准状态】:现行
【国别】:
【发布日期】:1994
【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】:D02.H0
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验;石油产品;分析;二氧化碳;烃类;润滑剂;液体
【英文主题词】:Carbondioxidecontent;Chemicalanalysis-petroleumproducts;Compositionanalysis-petroleumproducts;Demethanizedliquidhydrocarbonmixtures;Gaschromatography-petroleumproducts;Hydrocarbons;Naturalgas-liquid(NGL)mixtures;analysisofdemethanizedhydrocarbonliquidmixturescontaining;nitrogen/carbondioxide,bygaschromatography,test
【摘要】:Thecomponentdistributionofhydrocarbonliquidmixturesisoftenrequiredasaspecificationanalysisforthesematerials.Wideuseofthesehydrocarbonmixturesaschemicalfeedstocksorasfuelrequireprecisecompositionaldatatoensureuniformqualityofthereactionproduct.Inaddition,custodytransferoftheseproductsisoftenmadeonthebasisofcomponentanalysesofliquidmixtures.Thecomponentdistributiondataofhydrocarbonmixturescanbeusedtocalculatephysicalproperties,suchasspecificgravity,vaporpressure,molecularweight,andotherimportantproperties.Precisionandaccuracyofcompositionaldataareextremelyimportantwhenthesedataareusedtocalculatephysicalpropertiesoftheseproducts.1.1Thistestmethodcoverstheanalysisofdemethanizedliquidhydrocarbonstreamscontainingnitrogen/airandcarbondioxide,andpurityproductssuchasanethane/propanemixthatfallwithinthecompositionalrangeslistedinTable1.Thistestmethodislimitedtomixturescontaininglessthan5mol%ofheptanesandheavierfractions.1.2Theheptanesandheavierfraction,whenpresentinthesample,isanalyzedbyeither()reverseflowofcarriergasafter-hexaneandpeakgroupingor()precutcolumntoeluteheptanesandheavierfirstasasinglepeak.Forpuritymixeswithoutheptanesandheaviernoreverseofcarrierflowisrequired.Note1-InthecaseofunknownsampleswitharelativelylargeCplusorCplusfractionandwherepreciseresultsareimportant,itisdesirabletodeterminethemolecularweight(orotherpertinentphysicalproperties)ofthesefractions.Sincethistestmethodmakesnoprovisionfordeterminingphysicalproperties,thephysicalpropertiesneededcanbedeterminedbyanextendedanalysisoragreedtobythecontractingparties.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.ForspecifichazardstatementsseeAnnexA3.
【中国标准分类号】:G17
【国际标准分类号】:75_080
【页数】:10P.;A4
【正文语种】:


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【英文标准名称】:Industrialcommunicationnetworks-Fieldbusspecifications-Part6-2:Applicationlayerprotocolspecification—Type2elements
【原文标准名称】:工业通信网络.现场总线规范.应用层协议规范.2型元件
【标准号】:BSEN61158-6-2-2008
【标准状态】:作废
【国别】:英国
【发布日期】:2008-06-30
【实施或试行日期】:2008-06-30
【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】:应用层;应用;总线系统;总线;电路网络;通信;计算机应用;计算机控制;控制;控制设备;控制系统;控制工艺学;数据总线;数据通信;数据交换;数据传输线;数据连接系统;数据网络;数据处理;数据服务;数据传送;数据传输控制规程;定义;数字的;数字数据;数字工程;电子数据处理;电气工程;电子仪器;电子系统;现场总线;制导系统;工业的;工业设施;信息交换;信息处理;信息技术;接口(数据处理);开放系统互连;操作技术;OSI;过程控制工程;协议规范;协议;服务;规范;规范(验收);传输媒质;传输协议
【英文主题词】:Applicationlayer;Applications;Bussystems;Buses(dataprocessing);Circuitnetworks;Communication;Computerapplications;Computerizedcontrol;Control;Controlequipment;Controlsystems;Controltechnology;Databus;Datacommunication;Dataexchange;Dataline;Datalinksystem;Datanetwork;Dataprocessing;Dataservices;Datatransfer;Datatransmissioncontrolprocedures;Definition;Definitions;Digital;Digitaldata;Digitalengineering;EDP;Electricalengineering;Electronicinstruments;Electronicsystems;Fieldbus;Guidancesystems;Industrial;Industrialfacilities;Informationinterchange;Informationprocessing;Informationtechnology;Interfaces(dataprocessing);Opensystemsinterconnection;Operationaltechniques;OSI;Processcontrolengineering;Protocolspecification;Protocols;Services;Specification;Specification(approval);Transmissionmedia;Transmissionprotocol
【摘要】:Thisstandardprovidescommonelementsforbasictime-criticalandnon-time-criticalmessagingcommunicationsbetweenapplicationprogramsinanautomationenvironmentandmaterialspecifictoType2fieldbus.Theterm“time-critical”isusedtorepresentthepresenceofatime-window,withinwhichoneormorespecifiedactionsarerequiredtobecompletedwithsomedefinedlevelofcertainty.Failuretocompletespecifiedactionswithinthetimewindowrisksfailureoftheapplicationsrequestingtheactions,withattendantrisktoequipment,plantandpossiblyhumanlife.ThisstandardspecifiesinteractionsbetweenremoteapplicationsanddefinestheexternallyvisiblebehaviorprovidedbytheType2fieldbusapplicationlayerintermsofa)theformalabstractsyntaxdefiningtheapplicationlayerprotocoldataunitsconveyedbetweencommunicatingapplicationentities;b)thetransfersyntaxdefiningencodingrulesthatareappliedtotheapplicationlayerprotocoldataunits;c)theapplicationcontextstatemachinedefiningtheapplicationservicebehaviorvisiblebetweencommunicatingapplicationentities;d)theapplicationrelationshipstatemachinesdefiningthecommunicationbehaviorvisiblebetweencommunicatingapplicationentities.Thepurposeofthisstandardistodefinetheprotocolprovidedto1)definethewire-representationoftheserviceprimitivesdefinedinIEC61158-5-2,and2)definetheexternallyvisiblebehaviorassociatedwiththeirtransfer.ThisstandardspecifytheprotocoloftheType2fieldbusapplicationlayer,inconformancewiththeOSIBasicReferenceModel(ISO/IEC7498)andtheOSIapplicationlayerstructure(ISO/IEC9545).1.2SpecificationsTheprincipalobjectiveofthisstandardistospecifythesyntaxandbehavioroftheapplicationlayerprotocolthatconveystheapplicationlayerservicesdefinedinIEC61158-5-2.Asecondaryobjectiveistoprovidemigrationpathsfrompreviously-existingindustrialcommunicationsprotocols.ItisthislatterobjectivewhichgivesrisetothediversityofprotocolsstandardizedinIEC61158-6.
【中国标准分类号】:L79
【国际标准分类号】:35_100_70;35_160;35_240_50
【页数】:256P.;A4
【正文语种】:英语


基本信息
标准名称:饮用天然矿泉水中碱度的测定方法
中标分类: 食品 >> 饮料 >> 饮料制品
替代情况:被GB/T 8538-1995代替
发布日期:1900-01-01
实施日期:1988-08-01
首发日期:1900-01-01
作废日期:1900-01-01
出版日期:1900-01-01
页数:2页
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所属分类: 食品 饮料 饮料制品