SamplePreparationSamplingandsamplepreparationisanimportantissuebecausetraditionalmethodsusedtoobtainsamplesforoxygenandnitrogendeterminationaredifferentfromthoserecommendedforhydrogen,especiallywhensamplingmoltenmetal.Themaindifferenceinsteelsamplingproceduresforoxygen/nitrogenandhydrogenisduetothemobilityofhydrogen.Specialprecautionsmustbeusedwhensamplingforhydrogen.Frommoltensteelandiron,asamplemustbequicklyquenchedincoldwaterandchilledinarefrigerantsuchasliquefiednitrogenoramixtureofacetoneandsolidcarbondioxideinordertoreducelossesofhydrogenfromdiffusion.Lossesofoxygenandnitrogenfromdiffusionarenotaproblem.Asamplethatistakenforhydrogenandchilledinarefrigerantcanalsobeusedforoxygenandnitrogendetermination.However,asamplethatistypicallytakenforoxygenand/ornitrogendeterminationisnotsuitableforhydrogendeterminationduetohydrogenloss(diffusion).Surfacecontaminationmustberemovedbyfilingorlightgrinding,usingcarenottooverheatthesample.分析仪，就选上海禹重实业有限公司，有想法的可以来电咨询！北京分析仪优惠价格

美国LECO力可氧氮氢分析仪ONH836（氧氮氢联测仪）系列硬件部分特点和优势1、炉头区域LED照明系统2、炉头快速拆装的粉尘过滤装置3、装有自动旁路阀的可快速拆装氧水捕集装置4、的动态流量补偿（DFC）保证热导池气体流量、压力恒定5、改进的红外检测池技术 新红外池的恒温绝热技术消除了外界环境温度的干扰  长寿命的红外发射光源和无漂移的电路设计保证红外检测池的长期稳定  氧高低双量程采用3个碳红外检测器，同时检测一氧化碳和二氧化碳，保证准确定量  6、高效脉冲炉冷却系统  强力内循环水冷装置  双直流风扇保证持续冷却，不受电压波动的影响  新电极炉头设计，提高脉冲炉热交换效率  7、全自动分析系统（可选）  自动清扫装置  20位或100位全自动分析系统  高速全自动真空除尘装置直接将粉尘排至仪器外部捕集器中，消除环境污染安徽进口分析仪价格上海禹重实业有限公司为您提供分析仪，欢迎新老客户来电！

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.上海禹重实业有限公司是一家专业提供分析仪的公司，有需求可以来电咨询！

Procedure-SolidSamples：--Instrumentcalibration/driftcorrection.Placethenickelbasketcontainingthecalibration/driftstandardintotheopenportatthetopoftheloadinghead.PresstheAnalyzebuttonontheinstrumentscreenagain,theloadingheadslide-blockwillcloseandthelowerelectrodewillopen.Cleantheupperandlowerelectrodemanually,or,ifapplicable,removethecrucibleandpresstheanalyzebuttontocleanwiththeautomaticcleaner.分析仪，就选上海禹重实业有限公司，让您满意，欢迎您的来电哦！安徽进口分析仪价格

分析仪，就选上海禹重实业有限公司，有需求可以来电咨询！北京分析仪优惠价格

ONH836氧氮氢分析仪高频燃烧红外检测技分析无机材料中的碳、硫含量。采用惰性气体保护熔融法提供各种无机材料、钢铁、有色金属、硬质合金、难熔金属、陶瓷等材料中宽范围的氧氮氢同时分析。该仪器配置MSWindows®的软件接口，专为触摸屏操作定制。长期的开发研究与客户反馈相结合，这个简单方便的软件使得用户可以快速完整访问仪器控制，分析设置，故障诊断，数据报告，**提高日常分析的效率并节省用户宝贵的时间。可选的Cornerstone®Mobile软件功能，使得用户可以在手机，便携式电脑及台式电脑上便捷的访问仪器数据，分析曲线图形以及仪器的状态，实现对仪器的遥控。北京分析仪优惠价格