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.分析儀，就選上海禹重實(shí)業(yè)有限公司，有需要可以聯(lián)系我司哦！新疆美國(guó)LECO分析儀廠家報(bào)價(jià)

SamplePreparationSamplingandsamplepreparationisanimportantissuebecausetraditionalmethodsusedtoobtainsamplesforoxygenandnitrogendeterminationaredifferentfromthoserecommendedforhydrogen,especiallywhensamplingmoltenmetal.Themaindifferenceinsteelsamplingproceduresforoxygen/nitrogenandhydrogenisduetothemobilityofhydrogen.Specialprecautionsmustbeusedwhensamplingforhydrogen.Frommoltensteelandiron,asamplemustbequicklyquenchedincoldwaterandchilledinarefrigerantsuchasliquefiednitrogenoramixtureofacetoneandsolidcarbondioxideinordertoreducelossesofhydrogenfromdiffusion.Lossesofoxygenandnitrogenfromdiffusionarenotaproblem.Asamplethatistakenforhydrogenandchilledinarefrigerantcanalsobeusedforoxygenandnitrogendetermination.However,asamplethatistypicallytakenforoxygenand/ornitrogendeterminationisnotsuitableforhydrogendeterminationduetohydrogenloss(diffusion).Surfacecontaminationmustberemovedbyfilingorlightgrinding,usingcarenottooverheatthesample.上海LECO氧氮?dú)浞治鰞x供應(yīng)商分析儀，就選上海禹重實(shí)業(yè)有限公司，讓您滿(mǎn)意，有想法可以來(lái)我司咨詢(xún)！

Procedure-SolidSamplesInstrumentcalibration/driftcorrection.Placethecalibration/driftstandardina***NickelBasket,andifapplicable,placethesampleintotheappropriateautoloaderposition.PresstheAnalyzebuttonontheinstrumentscreen.Afterashortdelay,theloadingheadslide-blockwillopen.Note:samplesusingautomationshouldbeplacedintheappropriateautoloaderpositionbeforestartingtheanalysissequence.Oncethesequencehasstarted,theautomaticanalysiswillstartandendautomatically.

美國(guó)LECO力可氧氮?dú)浞治鰞xONH836（氧氮?dú)渎?lián)測(cè)儀）系列硬件部分特點(diǎn)和優(yōu)勢(shì)1、爐頭區(qū)域LED照明系統(tǒng)2、爐頭快速拆裝的粉塵過(guò)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(cè)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(zhǎng)壽命的紅外發(fā)射光源和無(wú)漂移的電路設(shè)計(jì)保證紅外檢測(cè)池的長(zhǎng)期穩(wěn)定  氧高低雙量程采用3個(gè)碳紅外檢測(cè)器，同時(shí)檢測(cè)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)境污染分析儀，就選上海禹重實(shí)業(yè)有限公司，用戶(hù)的信賴(lài)之選，有需求可以來(lái)電咨詢(xún)！

氧氮?dú)浞治鰞x的常見(jiàn)故障及解決方法儀器啟動(dòng)時(shí)顯示。沒(méi)有水流。系統(tǒng)分析電流切斷，分析停止。這是水流探測(cè)器不正常，水泵不工作，管道堵塞。將儀器的右面板取下，觀察水流探測(cè)器，用手?jǐn)D壓補(bǔ)水塑料水瓶，發(fā)現(xiàn)水流正常，顯示正常，證明水流探測(cè)器正常，管道暢通。啟動(dòng)循環(huán)水泵，但分析儀顯示沒(méi)有水流，此時(shí)可判定水泵不正常。打開(kāi)水泵轉(zhuǎn)子密封口，啟動(dòng)泵發(fā)現(xiàn)電機(jī)正常運(yùn)轉(zhuǎn)，此時(shí)關(guān)閉進(jìn)水，拆下水泵，發(fā)現(xiàn)葉輪脫落。經(jīng)了解，判定是由于外部冷卻水停水，儀器內(nèi)循環(huán)水溫過(guò)高（水溫應(yīng)≤70℃），致使葉輪（葉輪材料PVC）熱脹并脫軸。用粘合劑粘合葉輪后再粘于葉輪軸上，待粘合劑凝固后試車(chē)，儀器運(yùn)行正常。上海禹重實(shí)業(yè)有限公司分析儀獲得眾多用戶(hù)的認(rèn)可。安徽分析儀價(jià)格

分析儀，就選上海禹重實(shí)業(yè)有限公司，有需求可以來(lái)電咨詢(xún)！新疆美國(guó)LECO分析儀廠家報(bào)價(jià)

氧氮?dú)浞治鰞x的常見(jiàn)故障及解決方法供電正常、通訊正常，點(diǎn)擊確認(rèn)鍵后分析儀不工作。這是沒(méi)有水流，爐子溫度太高或儀器通道電壓不正常。如沒(méi)有水流，爐子溫度太高這些信息會(huì)顯示在顯示器畫(huà)面上，但沒(méi)有信息顯示說(shuō)明這兩項(xiàng)正常。接下來(lái)檢查儀器通道零位電壓，如果比±3V高出1V以上，可能是因?yàn)闅馄靠樟?，或者是空氣進(jìn)入到分析儀中。檢查并更換化學(xué)試劑，如果有空氣進(jìn)入熱導(dǎo)池里，熱導(dǎo)池的電壓就會(huì)＜-6V，此時(shí)打開(kāi)右面的門(mén)，堵住爐子氣體進(jìn)口，10s后，熱導(dǎo)池電壓值必然升高。經(jīng)過(guò)逐一排查，**終確認(rèn)堿石棉有問(wèn)題，更換后儀器正常。新疆美國(guó)LECO分析儀廠家報(bào)價(jià)