SamplePreparationSamplingandsamplepreparationisanimportantissuebecausetraditionalmethodsusedtoobtainsamplesforoxygenandnitrogendeterminationaredifferentfromthoserecommendedforhydrogen,especiallywhensamplingmoltenmetal.Themaindifferenceinsteelsamplingproceduresforoxygen/nitrogenandhydrogenisduetothemobilityofhydrogen.Specialprecautionsmustbeusedwhensamplingforhydrogen.Frommoltensteelandiron,asamplemustbequicklyquenchedincoldwaterandchilledinarefrigerantsuchasliquefiednitrogenoramixtureofacetoneandsolidcarbondioxideinordertoreducelossesofhydrogenfromdiffusion.Lossesofoxygenandnitrogenfromdiffusionarenotaproblem.Asamplethatistakenforhydrogenandchilledinarefrigerantcanalsobeusedforoxygenandnitrogendetermination.However,asamplethatistypicallytakenforoxygenand/ornitrogendeterminationisnotsuitableforhydrogendeterminationduetohydrogenloss(diffusion).Surfacecontaminationmustberemovedbyfilingorlightgrinding,usingcarenottooverheatthesample.分析儀，就選上海禹重實(shí)業(yè)有限公司，有想法的可以來電咨詢！北京分析儀優(yōu)惠價(jià)格

美國LECO力可氧氮?dú)浞治鰞xONH836（氧氮?dú)渎?lián)測儀）系列硬件部分特點(diǎn)和優(yōu)勢1、爐頭區(qū)域LED照明系統(tǒng)2、爐頭快速拆裝的粉塵過濾裝置3、裝有自動(dòng)旁路閥的可快速拆裝氧水捕集裝置4、的動(dòng)態(tài)流量補(bǔ)償（DFC）保證熱導(dǎo)池氣體流量、壓力恒定5、改進(jìn)的紅外檢測池技術(shù) 新紅外池的恒溫絕熱技術(shù)消除了外界環(huán)境溫度的干擾  長壽命的紅外發(fā)射光源和無漂移的電路設(shè)計(jì)保證紅外檢測池的長期穩(wěn)定  氧高低雙量程采用3個(gè)碳紅外檢測器，同時(shí)檢測一氧化碳和二氧化碳，保證準(zhǔn)確定量  6、高效脈沖爐冷卻系統(tǒng)  強(qiáng)力內(nèi)循環(huán)水冷裝置  雙直流風(fēng)扇保證持續(xù)冷卻，不受電壓波動(dòng)的影響  新電極爐頭設(shè)計(jì)，提高脈沖爐熱交換效率  7、全自動(dòng)分析系統(tǒng)（可選）  自動(dòng)清掃裝置  20位或100位全自動(dòng)分析系統(tǒng)  高速全自動(dòng)真空除塵裝置直接將粉塵排至儀器外部捕集器中，消除環(huán)境污染安徽進(jìn)口分析儀價(jià)格上海禹重實(shí)業(yè)有限公司為您提供分析儀，歡迎新老客戶來電！

Procedure-SolidSamplesInstrumentcalibration/driftcorrection.Addapproximately0.05gof***GraphitePowdertoa***GraphiteCrucible.Firmlyplacethecrucibleonthelowerelectrodetiporappropriateautoloaderposition.PresstheAnalyzebuttonontheinstrumentscreen,thelowerelectrodewillcloseandtheanalysissequencewillstartandendautomatically.Repeatsteps3bthrough3jaminimumofthreetimesforeachcalibration/driftstandardused.Calibrate/driftfollowingtheprocedureoutlinedintheoperatorsinstructionmanual.

SamplePreparationTypically,titaniumandzirconiumsamplesarechemicallyetchedtoremovesurfacecontaminationwhenoxygenandnitrogenaredetermined.However,etchingcanintroducehydrogenintothesample.ASTMmethodE1409"DeterminationofOxygenandNitrogeninTitaniumandTitaniumAlloysbytheInertGasFusionTechnique",asupdatedin1996,permitseitheretchingorabrading(filing)ofthetestspecimen.ASTME1447"DeterminationofHydrogeninTitaniumandTitaniumAlloysbytheInertGasFusionThermalConductivity/InfraredDetectionMethod"permitssurfacepreparationbyabrading(ifnecessarytoremovecontamination).DifferencesinsamplepreparationpresentsomewhatofadilemmaregardingsimultaneousdeterminationofO,N,andHintitanium.However,abradingsampleswithafiletoremovesurfacecontaminationwillyieldaccurateO,N,andHresults.TheONH836utilizesahigh-powerelectrodefurnacetoquicklyandefficientlyreleasethetargetgasesfromwithinthesample,whichallowsforaveryrapidsimultaneousdeterminationofoxygen,nitrogen,andhydrogen.上海禹重實(shí)業(yè)有限公司是一家專業(yè)提供分析儀的公司，有需求可以來電咨詢！

Procedure-SolidSamples：--Instrumentcalibration/driftcorrection.Placethenickelbasketcontainingthecalibration/driftstandardintotheopenportatthetopoftheloadinghead.PresstheAnalyzebuttonontheinstrumentscreenagain,theloadingheadslide-blockwillcloseandthelowerelectrodewillopen.Cleantheupperandlowerelectrodemanually,or,ifapplicable,removethecrucibleandpresstheanalyzebuttontocleanwiththeautomaticcleaner.分析儀，就選上海禹重實(shí)業(yè)有限公司，讓您滿意，歡迎您的來電哦！安徽進(jìn)口分析儀價(jià)格

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ONH836氧氮?dú)浞治鰞x高頻燃燒紅外檢測技分析無機(jī)材料中的碳、硫含量。采用惰性氣體保護(hù)熔融法提供各種無機(jī)材料、鋼鐵、有色金屬、硬質(zhì)合金、難熔金屬、陶瓷等材料中寬范圍的氧氮?dú)渫瑫r(shí)分析。該儀器配置MSWindows®的軟件接口，專為觸摸屏操作定制。長期的開發(fā)研究與客戶反饋相結(jié)合，這個(gè)簡單方便的軟件使得用戶可以快速完整訪問儀器控制，分析設(shè)置，故障診斷，數(shù)據(jù)報(bào)告，**提高日常分析的效率并節(jié)省用戶寶貴的時(shí)間。可選的Cornerstone®Mobile軟件功能，使得用戶可以在手機(jī)，便攜式電腦及臺(tái)式電腦上便捷的訪問儀器數(shù)據(jù)，分析曲線圖形以及儀器的狀態(tài)，實(shí)現(xiàn)對儀器的遙控。北京分析儀優(yōu)惠價(jià)格