ISO 18117-2009 表面化学分析.样品处理前分析
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来源:标准资料网
【英文标准名称】:Surfacechemicalanalysis-Handlingofspecimenspriortoanalysis
【原文标准名称】:表面化学分析.样品处理前分析
【标准号】:ISO18117-2009
【标准状态】:现行
【国别】:国际
【发布日期】:2009-03
【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/TC201
【标准类型】:()
【标准水平】:()
【中文主题词】:分析;化学分析和试验;精整;指导手册;指南;规范(验收);试样制备;储存;表面性质;表面;试样;试验;试验条件
【英文主题词】:Analysis;Chemicalanalysisandtesting;Finishes;Guidebooks;Guidelines;Specification(approval);Specimenpreparation;Storage;Surfaceproperties;Surfaces;Testspecimens;Testing;Testingconditions
【摘要】:
【中国标准分类号】:G04
【国际标准分类号】:71_040_40
【页数】:9P;A4
【正文语种】:英语
【英文标准名称】:Gasanalysis-Preparationofcalibrationgasmixturesusingdynamicvolumetricmethods-Criticalorifices
【原文标准名称】:气体分析.用动态容量法制备标定用混合气体.临界孔
【标准号】:BSISO6145-6-2003
【标准状态】:作废
【国别】:英国
【发布日期】:2003-05-16
【实施或试行日期】:2003-05-16
【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】:
【英文主题词】:Calibration;Calibrationgases;Controlsamples;Critical;Gasanalysis;Gasmixtures;Gas-volumetricanalysis;Methods;Nozzles;Orifices;Preparation;Production;Testgases
【摘要】:ThispartofISO6145specifiesamethodforthecontinuousproductionofcalibrationgasmixtures,containingtwoormorecomponents,frompuregasesorothergasmixturesbyuseofcriticalorificesystems.Byselectionofappropriatecombinationsoforificesandwiththeuseofpuregases,thevolumefractionofthecalibrationcomponentinthecalibrationgasmixturecanbevariedbyafactorof10.Additionally,itcanbechangedbyafactorof10bychangingtheinitialpressuresintheorificesystems.Theuncertaintyofthemethoddependsmainlyupontheflowcalibrationmethodandthevariationsintemperatureandoutletpressure.Therelativeexpandeduncertaintyinthevolumefractionobtainableforabinarymixture(atacoveragefactorof2)is3%.Ifpre-mixedgasesareusedinsteadofpuregases,muchlowervolumefractionscanbeobtained(seeAnnexA).Themassflowratesorvolumeflowrates,fromwhichthemassorvolumefractionsaredetermined,canbecalculatedandcanbeindependentlymeasuredbyasuitablemethodgiveninISO6145-1.Themeritsofthemethodarethatmulti-componentmixturescanbepreparedasreadilyasbinarymixturesiftheappropriatenumberoforificesisutilized,andthatalargequantityofcalibrationgasmixturecanbepreparedonacontinuousbasis.Therangeofflowratescanbefromseveralmillilitresperminutetoapproximately10l/min.Althoughparticularlyapplicabletopreparationofgasmixturesatbarometricpressure,themethodalsoprovidesameansofpreparationofcalibrationgasmixturesatpressuresabovebarometricpressure.AnnexBgivespracticalhintsontheuseofthemethod.
【中国标准分类号】:Z15
【国际标准分类号】:71_040_40
【页数】:20P.;A4
【正文语种】:英语
Product Code:SAE AS397
Title:Direction Instrument, Non-Magnetic, Stabilized Type (Directional Gyro) (NONCURRENT Nov 1996)
Issuing Committee:A-4 Aircraft Instruments Committee
Scope:To specify minimum requirements for non-magnetic gyroscopically stabilized direction indicators for use in aircraft, the operation of which may subject the instruments to the environmental conditions specified in Paragraph 3.3. This Aeronautical Standard covers two basic types as follows: Type I - Air Operated, Type II - Electrically Operated.
