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

美國LECO力可氧氮氫分析儀ONH836（氧氮氫聯測儀）系列硬件部分特點和優勢1、爐頭區域LED照明系統2、爐頭快速拆裝的粉塵過濾裝置3、裝有自動旁路閥的可快速拆裝氧水捕集裝置4、的動態流量補償（DFC）保證熱導池氣體流量、壓力恒定5、改進的紅外檢測池技術 新紅外池的恒溫絕熱技術消除了外界環境溫度的干擾  長壽命的紅外發射光源和無漂移的電路設計保證紅外檢測池的長期穩定  氧高低雙量程采用3個碳紅外檢測器，同時檢測一氧化碳和二氧化碳，保證準確定量  6、高效脈沖爐冷卻系統  強力內循環水冷裝置  雙直流風扇保證持續冷卻，不受電壓波動的影響  新電極爐頭設計，提高脈沖爐熱交換效率  7、全自動分析系統（可選）  自動清掃裝置  20位或100位全自動分析系統  高速全自動真空除塵裝置直接將粉塵排至儀器外部捕集器中，消除環境污染安徽進口分析儀價格上海禹重實業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.上海禹重實業有限公司是一家專業提供分析儀的公司，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，就選上海禹重實業有限公司，讓您滿意，歡迎您的來電哦！安徽進口分析儀價格

分析儀，就選上海禹重實業有限公司，有需求可以來電咨詢！北京分析儀優惠價格

ONH836氧氮氫分析儀高頻燃燒紅外檢測技分析無機材料中的碳、硫含量。采用惰性氣體保護熔融法提供各種無機材料、鋼鐵、有色金屬、硬質合金、難熔金屬、陶瓷等材料中寬范圍的氧氮氫同時分析。該儀器配置MSWindows®的軟件接口，專為觸摸屏操作定制。長期的開發研究與客戶反饋相結合，這個簡單方便的軟件使得用戶可以快速完整訪問儀器控制，分析設置，故障診斷，數據報告，**提高日常分析的效率并節省用戶寶貴的時間。可選的Cornerstone®Mobile軟件功能，使得用戶可以在手機，便攜式電腦及臺式電腦上便捷的訪問儀器數據，分析曲線圖形以及儀器的狀態，實現對儀器的遙控。北京分析儀優惠價格