DIN 1944-1968 离心泵验收试验(VDI离心泵规程)
作者:标准资料网 时间:2024-05-20 21:15:35 浏览:9031
来源:标准资料网
【英文标准名称】:Acceptancetestsoncentrifugalpumps(VDI-rulesforcentrifugalpumps)
【原文标准名称】:离心泵验收试验(VDI离心泵规程)
【标准号】:DIN1944-1968
【标准状态】:作废
【国别】:德国
【发布日期】:1968-10
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:验收;离心泵;测量;泵;测量仪器
【英文主题词】:pumps;centrifugalpumps;measurement;acceptance(approval);measuringinstruments;acceptance
【摘要】:
【中国标准分类号】:J71
【国际标准分类号】:3150
【页数】:39P;A4
【正文语种】:德语
【英文标准名称】:StandardTestMethodforDeterminationofBenzene,Toluene,Ethylbenzene,p/m-Xylene,o-Xylene,C9andHeavierAromatics,andTotalAromaticsinFinishedGasolinebyGasChromatography
【原文标准名称】:用气相色谱法测定成品汽油中苯,甲苯,乙苯,p/m二甲苯,o-二甲苯,C9和重芳烃及总芳烃含量的标准试验方法
【标准号】:ASTMD5580-2002(2007)
【标准状态】:现行
【国别】:美国
【发布日期】:2002
【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】:D02.04.0L
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:aromatics;benzene;ethylbenzene;gaschromatography;gasoline;toluene;xylenes;Aromaticcompounds;Aromatichydrocarbons(AHs);Benzene--petroleumproducts;Ethylbenzene;Finishedmotor/aviationgasoline;Gaschromatography(GC)--petroleumproducts;Ga
【摘要】:Regulationslimitingtheconcentrationofbenzeneandthetotalaromaticcontentoffinishedgasolinehavebeenestablishedfor1995andbeyondinordertoreducetheozonereactivityandtoxicityofautomotiveevaporativeandexhaustemissions.Testmethodstodeterminebenzeneandthearomaticcontentofgasolinearenecessarytoassessproductqualityandtomeetnewfuelregulations.Thistestmethodcanbeusedforgasolinesthatcontainoxygenates(alcoholsandethers)asadditives.Ithasbeendeterminedthatthecommonoxygenatesfoundinfinishedgasolinedonotinterferewiththeanalysisofbenzeneandotheraromaticsbythistestmethod.1.1Thistestmethodcoversthedeterminationofbenzene,toluene,ethylbenzene,thexylenes,C9andheavieraromatics,andtotalaromaticsinfinishedmotorgasolinebygaschromatography.1.2Thearomatichydrocarbonsareseparatedwithoutinterferencesfromotherhydrocarbonsinfinishedgasoline.Nonaromatichydrocarbonshavingaboilingpointgreaterthann-dodecanemaycauseinterferenceswiththedeterminationoftheC9andheavieraromatics.FortheC8aromatics,p-xyleneandm-xyleneco-elutewhileethylbenzeneando-xyleneareseparated.TheC9andheavieraromaticsaredeterminedasasinglegroup.1.3Thistestmethodcoversthefollowingconcentrationranges,inliquidvolume%,fortheprecedingaromatics:benzene,0.1to5%;toluene,1to15%;individualC8aromatics,0.5to10%;totalC9andheavieraromatics,5to30%,andtotalaromatics,10to80%.1.4Resultsarereportedtothenearest0.01%byeithermassorbyliquidvolume.1.5Manyofthecommonalcoholsandethersthatareaddedtogasolinetoreducecarbonmonoxideemissionsandincreaseoctane,donotinterferewiththeanalysis.Etherssuchasmethyltert-butylether(MTBE),ethyltert-butylether(ETBE),tert-amylmethylether(TAME),anddiisopropylether(DIPE)havebeenfoundtoelutefromtheprecolumnwiththenonaromatichydrocarbonstovent.Otheroxygenates,includingmethanolandethanolelutebeforebenzeneandthearomatichydrocarbons.1-Methylcyclopentenehasalsobeenfoundtoelutefromtheprecolumntoventanddoesnotinterferewithbenzene.1.6ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E31
【国际标准分类号】:75_160_20
【页数】:9P.;A4
【正文语种】:英语
【英文标准名称】:StandardTerminologyRelatingtoSolarEnergyConversion
【原文标准名称】:有关太阳能转换的标准术语
【标准号】:ASTME772-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【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】:E44.09
【标准类型】:(Terminology)
【标准水平】:()
【中文主题词】:定义;术语;太阳能;变换
【英文主题词】:solarcollectors;solarenergy;solarheating/coolingsystems;solarspectralirradiance;terminology-solardevices
【摘要】:
【中国标准分类号】:F12
【国际标准分类号】:01_040_27;27_160
【页数】:8P.;A4
【正文语种】:
