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【英文标准名称】:Naturalgas-Measurementofproperties-Volumetricproperties:density,pressure,temperatureandcompressionfactor
【原文标准名称】:天然气.参数测量.容积参数:密度、压力、温度和压缩因子
【标准号】:ISO15970-2008
【标准状态】:现行
【国别】:国际
【发布日期】:2008-06-15
【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/TC193
【标准类型】:()
【标准水平】:()
【中文主题词】:分析;校正;校正气体;热值;压缩性;压缩比;定义;密度;气体分析;气体;材料测试;测量;测量技术;天然气;使用条件;性能;物理性能;精密度;压力;压力测量(流体);规范(验收);温度;温度测量;试验气体;测试;证实;容积;容积分析
【英文主题词】:Analysis;Calibration;Calibrationgases;Calorificvalue;Calorificvalues;Compressibility;Compressionratios;Definition;Definitions;Density;Gasanalysis;Gases;Materialstesting;Measurement;Measuringtechniques;Naturalgas;Operatingconditions;Performance;Physicalproperties;Precision;Pressure;Pressuremeasurement(fluids);Properties;Specification(approval);Temperature;Temperaturemeasurement;Testgases;Testing;Validation;Volumetric;Volumetricanalysis
【摘要】:ThisinternationalStandardgivesrequirementsandproceduresforthemeasurementofthepropertiesofnaturalgasthatareusedmainlyforvolumecalculationandvolumeconversion:densityatreferenceandatoperatingconditions,pressure,temperatureandcompressionfactor.Onlythosemethodsandinstrumentsareconsideredthataresuitableforfieldoperationundertheconditionsofnaturalgastransmissionanddistribution,installedeitherin-lineoron-line,andthatdonotinvolvethedeterminationofthegascomposition.ThisInternationalStandardgivesexamplesforcurrentlyusedinstrumentsthatareavailablecommerciallyandofinteresttothenaturalgasindustry.NOTEAttentionisdrawntorequirementsforapprovalofnationalauthorizationagenciesandtonationallegalregulationsfortheuseofthesedevicesforcommercialorofficialtradepurposes.Thedensityatreferenceconditions(sometimesreferredtoasnormal,standardorevenbasedensity)isrequiredforconversionofvolumedataandcanbeusedforotherphysicalproperties.Densityatoperatingconditionsismeasuredformass-flowmeasurementandvolumeconversionusingtheobservedlinedensityandcanbeusedforotherphysicalproperties.ThisInternationalStandardcoversdensitytransducersbasedonvibratingelements,normallysuitableformeasuringrangesof5kg/m3to250kg/m3.Pressuremeasurementdealswithdifferential,gaugeandabsolutepressuretransmitters.Itconsidersbothanalogueandsmarttransmitters(i.e.microprocessorbasedinstruments)and,ifnotspecifiedotherwise,thecorrespondingparagraphsrefertodifferential,absoluteandgaugepressuretransmitterswithoutdistinction.Temperaturemeasurementsinnaturalgasareperformedwithintherangeofconditionsunderwhichtransmissionanddistributionarenormallycarriedout(253K<7'

标准名称：	熔模铸造型壳高温热变形试验方法
中标分类：	机械 >> 加工工艺 >> 铸造
替代情况：	被JB/T 2980.1-99代替
发布日期：
实施日期：	2003-10-01
首发日期：
作废日期：	2000-01-01
出版日期：
页数：	2页

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