BS 4986-1973 固定高度的助步架规范

上一篇: DIN 19683 Bb.14-1973 农业水利工程中土壤研究方法.实验室物理研究.沼泽土壤固态物质体积(相对密度)测定
下一篇: DIN 6832 Bb.1-1973 医用X光照相用的暗盒.尺寸和要求

【英文标准名称】:StandardPracticeforCalibrationTechniquesUsingPermeationTubes
【原文标准名称】:使用渗透管校准技术的标准实施规程
【标准号】:ASTMD3609-2000(2010)
【标准状态】:现行
【国别】:美国
【发布日期】:2000
【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】:D22.01
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:analyzers;butanepermeationtubes;calibration;CL2permeationtubes;gaspermeabletubes;H2Spermeationtubes;NH3permeationtubes;NO2permeationtubes;propanepermeationtubes;SO2per
【摘要】:Mostanalyticalmethodsusedinairpollutantmeasurementsarecomparativeinnatureandrequirecalibrationorstandardization,orboth,oftenwithknownblendsofthegasofinterest.Sincemanyoftheimportantairpollutantsarereactiveandunstable,itisdifficulttostorethemasstandardmixturesofknownconcentrationforextendedcalibrationpurposes.Analternativeistopreparedynamicallystandardblendsasrequired.Thisprocedureissimplifiedifaconstantsourceofthegasofinterestcanbeprovided.Permeationtubesprovidethisconstantsource,ifproperlycalibratedandifmaintainedatconstanttemperature.Permeationtubeshavebeenspecifiedasreferencecalibrationsources,forcertainanalyticalprocedures,bytheEnvironmentalProtectionAgency(3).1.1Thispracticedescribesameansforusingpermeationtubesfordynamicallycalibratinginstruments,analyzers,andanalyticalproceduresusedinmeasuringconcentrationsofgasesorvaporsinatmospheres(1,2).1.2Typicalmaterialsthatmaybesealedinpermeationtubesinclude:sulfurdioxide,nitrogendioxide,hydrogensulfide,chlorine,ammonia,propane,andbutane(1).1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:N04
【国际标准分类号】:17_020
【页数】:5P.;A4
【正文语种】:英语


【英文标准名称】:Castbronzethreadedfittings
【原文标准名称】:铸青铜螺纹管件
【标准号】:ASMEB16.15-1985
【标准状态】:作废
【国别】:美国
【发布日期】:1985
【实施或试行日期】:
【发布单位】:美国机械工程师协会(ASME)
【起草单位】:ASME
【标准类型】:()
【标准水平】:()
【中文主题词】:青铜;螺纹紧固件;金属管道;铸铁管;管道敷设;量值;管联接器;材料规范;尺寸;配件;作标记;压力试验
【英文主题词】:Bronzes;Castironpipes;Dimensions;Fittings;Marking;Materialsspecification;Metalpipes;Pipecouplings;Pipelaying;Pressuretests;Size;Threadedfasteners
【摘要】:
【中国标准分类号】:J15
【国际标准分类号】:23_040_40
【页数】:42P;A4
【正文语种】:英语