【英文标准名称】:Fixedresistors,wirewound,cementcoated,lugterminals
【原文标准名称】:带接线耳的涂漆的固定式线绕电阻器
【标准号】:DIN44192-1971
【标准状态】:作废
【国别】:
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【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:
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【英文标准名称】:StandardPracticeforSamplingofLiquidsinWasteManagementActivitiesUsingaPeristalticPump
【原文标准名称】:废物管理活动中用蠕动泵进行液体取样的标准实施规程
【标准号】:ASTMD7353-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:D34.01.03
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:液体;泵;取样;废物管理
【英文主题词】:peristaltic;pump;sampling;wastestreams
【摘要】:Thispracticecanbeusedinsamplingdrums,tanks,andsimilarcontainersandinsamplingmonitoringandwastewellsincludingsmalldiameter(1in.)wells.Thepumpcancollectsamplesfrommultipledepths.Thesamplescanbehigh-viscosityfluids,aggressiveandcorrosivefluids,high-puritysolutionsandabrasivefluids.Thepumpcanbeusedtomixsamples(seeD6063).Peristalticpumpsuseavacuumtotransportthesamples.Thisvacuummaycausesomedegassingandlossofvolatileorganiccompounds(VOCs)fromthesample.WhenprecisequantitativedataforVOCsanddissolvedgasesarenotrequired,peristalticpumpsmaybeused.Thepumpisself-priming,runsdrywithoutdamage,andiscompletelyisolatedfromthepumpedfluid.Asamplecanbetakenontheintakeordischargesideofthepump.Someadditionaladvantagesoftheperistalticpumpare:decontaminationofthepumpmotorisnotnecessaryandthetubinginthepumpisdisposableandeasytoreplace.Thepumpscanbeeasilystartedandstoppedandcanpumpfluidsatawiderangeofpressuresandflowrates.Theplace,qualityandquantity,frequency,andtimeofsamplingisdependentuponthedecisionsthataretobemade(seeD6250),samplingdesign(seeD6311),thesample,theheterogeneityofthesamples(seeD5956),howrepresentativethesampleis(seeD6044),andtheparameterstobetestedasdeterminedbythedataqualityobjectives(DQOs)(seeD5792).1.1Thispracticecoverstheuseofaperistalticpumpforsamplingliquidsfrommultipledepths.Itisapplicableforawiderangeoffluidsincluding:high-viscosityfluids,aggressiveandcorrosivefluids,high-puritysolutionsandabrasivefluids.Itisespeciallyusefulforsamplingliquidsthatrequirecompleteisolationfromthepump.1.2Thispracticeincludesthedeterminationofsampledepth,pumpsetupandcollectingasampletobeanalyzed.1.3Thispracticeisnotintendedtogivedetailedinstructionsforrunningaperistalticpumporrecommendwhichperistalticpumptopurchase.Itinstructsthefieldpersonnelhowtoconnectthepumpandcollectasample.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:J71
【国际标准分类号】:23_080
【页数】:4P.;A4
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