DF直讀光譜儀操作規(guī)程

DocumentNo.文件編號:DFDocumentNo.文件編號:DF直讀光譜儀操作規(guī)程作業(yè)指導書EffectiveDate生效日期:DFDirect-readingSpectrometerOperationProcedureTheinformationContainedinthisEdition版次TheinformationContainedinthisEdition版次A/0頁數(shù):10of15documentshallnotbecopiedordisclosedwithoutauthorizedpermission.目的和適用范圍PurposeandApplicationScope本文件制訂了DF直讀光譜儀的操作規(guī)程，旨在準確地對鋼鐵材料進展化學成分定性定量分析。ThisdocumentspecifiesDFdirectreadingspectrometeroperatingprocedures,intendtoaccuratelyandquantitativelyanalyzethechemicalcompositionofsteelmaterial.技術(shù)要求Technologicalrequirements運輸與移動Transportation&Setting-upDF系列光譜儀用木制標準包裝箱，安裝現(xiàn)場可用叉車〔承載力氣為400kg〕來移動儀器。假設(shè)要把儀器移動到高于或低于地面的位置，則要用叉車或萬能升降車或吊車。DFseriesspectrometerisdeliveredwithstandardwoodenpackage.Forklift(carryingcapacitymorethan400kg)canbeusedtomovethisinstrumentwheninstallation.Iftheinstrumentshouldbemovedhigherorlowerthanthelocationoftheground,thenforklifttrucksorageneralelevatororcraneshouldbeused.〔距離墻壁至少0.81.42×1.30m×0.92m10ｍ2，與儀器相接的全部接口都位于儀器后面。Forrepairandmaintenanceconveniently,thereshouldbeacertainspaceonallsides(atleast0.8mfromthewalls).Thesizeofinstrumentis1.38m×1.26m×0.88m.Inaddition,spaceshouldbeleftforprinter,computerandargongascylinder,soitneedsatleast10m2,andallinterfacesareontherearoftheinstrument.注：儀器必需確定避開一面受熱〔比方：陽光直射，靠近加熱裝置等。Note:Theinstrumentmustbeavoidedheatedwithoneside(suchasdirectsunlight,neartheheatingdevice,etc.).環(huán)境要求EnvironmentalRequirement儀器內(nèi)部有恒溫系統(tǒng)，因此儀器工作環(huán)境溫度在10℃~30℃之間，建議安裝空調(diào)，以避開內(nèi)部恒溫連續(xù)工作或失去作用〔內(nèi)部恒溫在3℃。儀器工作現(xiàn)場的相對濕度應(yīng)小于80高濕度可能會造成光學系統(tǒng)、高壓系統(tǒng)或其它電子系統(tǒng)消滅不行推想的故障Thereisathermostatsystemintheinstrument,soworkingenvironmenttemperatureshouldbein10℃~30℃andairconditioningisproposedtoinstalltoavoidinternalheaterworkscontinuouslyorloseitsrole(internaltemperatureat30℃±1).Relativehumidityoftheworkingspaceshouldbelessthan80percent.Otherwise,itcanarouseunpredictablefaultinopticalsystem,high-voltagecircuitandotherelectronicsystemsduetolowtemperatureorhigh-humidity.電氣連接ElectricalConnectionsDF系列光譜儀對電源的要求是：220V±10%，50Hz，16A慢熔保險絲。建議配電系統(tǒng)應(yīng)有斷電保護〔加裝溝通接觸器及復(fù)位開關(guān)〕和過壓保護〔配備3~5KVA的穩(wěn)壓電源。主電源、計算機串口等在儀器后面。ThepowerrequirementofDFseriesspectrometeris:220V±10%,50Hz,16Adelayedsafetyfuse.Installationofpowerinterruptprotectssystem(powerrelayandresetswitchshouldbeinstalled)andover-voltageprotection(with3~5KVAofpowervoltageregulator)isrecommended.Themainpower,computerserialportandotherinterfacesareallintherearoftheinstrument.氬氣要求ArgonGasRequirement依靠于分析材料，DF系列光譜儀使用光譜儀專用氬氣，純度為99.996%以上。安裝儀器時，氬氣瓶上應(yīng)配備氬氣表〔或氧氣表代替，及與表連接的銅管，供給應(yīng)儀器的氬氣壓力為0.3Mp0.4MP。Dependingonanalyzedmaterials,DFseriesspectrometerrequiresargongasofabove99.996percentpurity.Wheninstallingtheinstrument,argongascylindershouldbeequippedwithargongasgauge(oroxygengasgaugeassubstitute),withthecopperpipeconnectedtoit.Besides,thepressureoftheprovidedargongasis0.3Mpa~0.4Mpa.試樣制備Samplepreparation用光譜儀分析試樣時，試樣制備極其重要。制備方法取決于分析材料，鋼及其它硬質(zhì)材料通常用托盤40-60目的氧化鐵砂紙。Samplepreparationisextremelyimportantwhenanalyzingsampleswithaspectrometer.Preparationmethoddependsonanalysismaterials.Forsteelandotherhardmaterialsagrinderusing40~60grit(aluminumoxide)paper.操作規(guī)程PurposeandApplicationScope開機和關(guān)機：Turnon/off:開機:Turnon:總開關(guān)→檢測→光源Masterswitch→Testing→Source翻開計算機→進入“東方”程序→儀器→檢測真空電路Turnonthecomputer→enter“theoriental“program→Instrument→DetectionofVacuumCircuit.電腦屏幕左下方顯示“高壓已加”之后，再翻開高壓按鈕〔再開高壓按鈕，同時將實時檢測真空電路前面的“√”去掉。Afterdisplaying“highvoltagehasbeenadded”atthelowerleftofthecomputerscreen,thenopenthehighvoltagebutton(ifthecomputerscreendisplays“highvoltagedoesnotadd“,youshouldpressthehighvoltagebuttonwhenthescreendisplays“highvoltagehasbeenadded”,atthesametimeputthe“√“outwhichisinfrontofthevacuumvalvecircuit).關(guān)機：高壓→光源→檢測→總開關(guān)Turnoff:highvoltage→testing→source→masterswitch3.13留意事項Notes假設(shè)知道要停電先將儀器關(guān)掉，關(guān)掉儀器后再開機需要先穩(wěn)定4-6小時，再使用，必需重描跡。如果長時間關(guān)閉必要在使用的前一天開機。儀器需要恒定溫度30度，留意后面溫控儀的數(shù)值，保持在29-31操作。Ifyouknowtopoweroutage,mustpowerofftheinstrument,whenturnedonagainafterturningofftheinstrumentneedtobestablefor4to6hoursandre-profile.Ifpoweroffforalongtime,needtoturnonitthedaybeforeuse.Theinstrumentneedsconstanttemperature30centigrade,payattentiontothevalueoftemperaturecontrollerbehind,itwouldbebesttokeepthetemperaturebetween29and31centigrade.Ifthetemperatureistoohighortoolowmustinformtheinstrumentcompany.InstrumentoperationmustbeinstrictaccordancewiththeTurnon/offsequenceintheoperationsequence.氬氣Argongas好壞推斷：能激發(fā)起點了則好，假設(shè)打白點或激發(fā)不起來則不好，需要換另外一瓶。Whetherthepuritymeetthestandard:Thepuritymeetthestandardwheninstrumentcaninspireagoodpoint.Iftheinstrumentcannotinspirepointorinspirewhitepoint, youshouldreplaceanotherbottleoftheargongas.2-3瓶氬氣，防止不純或沒有氬氣時更換.Generallyneedtopreparetwoorthreebottlesofargon,replacetheargongaswhenabottleisimpurityorrunout.工作原理和試樣制備Theworkingprincipleandsamplepreparation工作原理：Theworkingprinciple：原子放射光譜分析所承受的原理是用電弧〔或火花〕的高溫使樣品中各元素從固態(tài)直接氣化并被激發(fā)過出射狹縫，射入各自的光電倍增管，光信號變成電信號，經(jīng)儀器的把握測量系統(tǒng)將電信號積分并進展模/數(shù)轉(zhuǎn)換，然后由計算機處理，并打印出各元素的百分含量。Hightemperatureproducedbyarcsorsparks makethesamplegasification,theelementsof thesampleisinspiredandlaunchcharacteristicspectralline.Aftersplittingthroughopticalgrating,characteristicspectrallineisbecomespectrumaccordingtowavelength.Thecharacteristicspectrallinesoftheseelementsinjectintotherespectivephotomultipliertubesthroughtheexitslit.Thelightsignalstransformintoelectricalsignals.Itismeasuredbytheinstrumentcontrolsystemandprocessedbycomputer.Theprinterprintoutthepercentagecontentofeachelement.試樣的制備：取樣要有代表性，沒有氣孔、裂紋、砂眼和夾渣。Samplepreparation:Thesampleshouldberepresentative,withoutpores,cracks,trachoma,andslag.樣品的磨制：要平坦、有紋理、磨完不能用手摸，不能沾上水或油。Samplesgrinding:Thesampleshouldbesmooth,textured,cannotbetouchedandstainedwithwateroroilaftergrinding.1/21/2處〔不能在同一部位激發(fā)多點。Inspiredparts:Theinspiredpositionmustbecorrect,forcylindricalsamplesitisinthepositionof1/2ofradiusneartheoutside(Inspiremultiplepointsinthesameplaceisnotpermitted).光譜儀預(yù)熱好壞的推斷：Judgmenttothepreheatofthespectrometer：看點子：中間有銀白色金屬熔融物，外圈有黑色或褐色的放電物〔鑄鐵可能沒有黑圈。Lookatdot:Thereissomesilver-whitemetalmeltinthemiddleofthedot,blackorbrowndischargematerial attheouterring(theremaybenoblackcircleinthecastironsample).連續(xù)激發(fā)幾次看屏幕上元素濃度數(shù)據(jù)的接近程度。Seetheproximityoftheconcentrationdataoftheelementaftercontinuouslyinspiringseveraltimes.看“顯示選擇”→原始強度FeR的值是否到達確定數(shù)值且變化很小，上下相差不超過15%。See“Showoptions“→WhetherthevalueoftheoriginalstrengthofFeRreachesacertainvalueandhavelittlechanges,rangeabilityisnomorethan15%.描跡Profile點“系統(tǒng)維護”里面的“PMT自動描跡”。Click“PMTAuto-profile”inthe“Systemmaintenance”.點“參數(shù)設(shè)置“讀電機位置”再點“確定A設(shè)置起始位置和終止位置，起始位置為A-100，終止位置為A+100。Click“conditionsset“,firstlyclick“readthemotorposition“ →OK,setthestartpositionandendpositionaccordingto themotorposition,startingpositionfortheA-100,theterminationoflocationA+100.點“復(fù)位”，再點“確認”Click“Reset”,then“Confirm”.放好樣品后點“開頭”Click“Start”afterputtingawaythesample.基體元素Fe和鐵基中含量比較高的另一個元素〔廢樣假設(shè)是鑄鐵選C通道〕ClickFechannelandanotherironbaseelementofrelativelyhighcontent(Forcastironscrapsample,chooseCchannel).點“描跡位置”，讀出位置點“確定”Click“Profileposition”andreadoutthepeakpositionthenclick“Confirm”.點“自動定位”，等自動定位完畢，點OKClick“Auto-positioning”andwhenitcompleted,clickOK.(8)關(guān)閉Close留意事項：以下狀況需要描跡：Note:Thefollowingneedprofile：長期停電和突然斷電.Long-termpoweroutagesandemergencypowerfailure.溫控消滅故障Temperaturecontrolfaultoccurs擦完透鏡Aftercleaningupthelens每一月做一次或按使用狀況設(shè)定。Onceamonthoraccordingtotheservicecondition.標準化〔對光譜儀工作曲線的校準〕Standardization〔Calibrationcurve〕目的：Objective:把發(fā)生漂移曲線〔Ⅱ〕校正成正常曲線(Ⅰ)。[(Ⅰ)曲線是最正確工作曲線]Correctthedriftingcurve(Ⅱ)intothenormalcurve(Ⅰ).[Curve(Ⅰ)isthebestworkcurve]作法Process點“標準化”或F7進入。Click“standardization“orF7toenter.依據(jù)“品名規(guī)格”顯示的樣品名稱找到此樣品，放到火花臺處激發(fā)2-3點，點“平均+偏差”看RSD333把較大的去掉，合格后點擊下一個。Findthesampleaccordingwiththenameofthesampleshowedby“thesamplespecification“,theninspirethesample2-3points,click“average+deviation”, click“next”whentheRSDlessthan3.IftheRSDnotlessthan3,youshouldinspirethesampleagain,deletethepointwhosedeviationisgreater.數(shù)。Inspirethesampleaccordingtotheorderuntilthescreendisplay“routinestandardizedend”.標準化系數(shù)范圍要求0.5-2.5，在范圍內(nèi)點“承受Thescopeofrequiredstandardizedcoefficientis0.5-2.5,inthescopeofrequiredclickOK→Accept留意事項：每激發(fā)一次刷一下電極，標準化樣品不能放錯，標準化系數(shù)不能為負數(shù)。Note:Theelectrodeshouldbebrushedafterinspiring,cannotplacethewrongsamples,standardizedcoefficientscannotbenegative.類型標準化Typestandardization適合材質(zhì)、構(gòu)造組織一樣的樣品，并且成分值和樣品標準值接近。ThismethodisSuitforthesamplewhosematerial,structuralorganizationissame,andthecomponentvalueandsamplestandardvalueisclose.能一次校正全局部析元素。Cancorrectalltheanalyticalelementsonce.〔只有第一次要輸入值，以后可以直接調(diào)用〕Inputmethod:(shouldinputvaluesonlythefirsttime,thefuturecanbedirectlyinvoked)程序→修改程序參數(shù)Programs→modifytheprogramparameters點“類型標準化樣品Click“Typestandardizationsample“,click“Add”.輸入樣品名稱“如31〔不能輸入一樣的名字〕Enterthesamplename“,suchas316“(cannotenterthesamename)點“確定”Click“Confirm“tosaveClick“Typestandardizedparameters“,enter“Elementname“andthe“Realconcentration.“點添加來增加行，直到輸完全部元素為止〔屏幕上能分析的元素輸進去，樣品上有的元素但屏幕上沒有的元素不要輸進去，否則會出錯誤。全部輸入完畢，點擊“確定Usethekeyboard“↓“keytoincreasethelineuntilenteralltheelements(entertheelementcanbeanalyzedonthescreen,theelementsofthesamplebutnotonthescreencannotbeinputted,otherwiseerroroccurs〕.Alltheinputiscompleted,thenexit.類型標準化作法Theprocessoftypestandardization點擊“類型標準化F”按鍵進入Click“typestandardization(F8)”toenter.查看“品名規(guī)格”顯示的樣品名稱，找到相應(yīng)的樣品激發(fā)2-3次。Findthesampleaccordingwiththenameofthesampleshowedby“thesamplespecification“,theninspirethesample2-3points.看全部數(shù)據(jù)是否接近，假設(shè)接近，點“下一個F點“下一個F”Toseewhetherallthedataareclose.Ifclose,thenclick“thenext(F3)“,Ifthedataisnotclose,youshouldinspireonceagain,deletethepointwhosedeviationislarger.顯示“類型標準化完畢Show“Typestandardizedend”,click“Confirm”.Click“Accept”,typeofstandardizationiscomplete.再打同一個試樣，看是否全部值和標準值接近，接近就可以分析爐內(nèi)樣品了。Re-analyzeasample.Ifallvaluesclosetostandardvalues,youcananalyzethesampleofthefurnaceinside.類型標準化之間的轉(zhuǎn)換Conversionbetweenthetypestandardization.前提：有各種材質(zhì)并且都作完了類型標準化。Premise:Therearevarioustypesofmaterials,andallhavebeenfinishedtypestandardization.A的產(chǎn)品，就從“測量”→裝入類型標準化→選擇AA的產(chǎn)品。下爐不做A的產(chǎn)品而要做B的產(chǎn)品，就從“測量”→去除類型標準化→再裝入類型標準化→選擇B→確定，測量B的產(chǎn)品。AssumethatthisfurnaceisA,fromthe“measurement“→loadtypestandardization→SelectthetypeA-OK, measure A. Next do notProduce Abut B, from the “measurement“→Clear typestandardization→re-loadtypestandardization→selectB→OK,measureB.光譜儀校準的三種方法：描跡、標準化、類型標準化。Threemethodofcalibratingthespectrometer:profile,standardization,typestandardization.材質(zhì)的輸入方法〔便利對檢測產(chǎn)品質(zhì)量的推斷〕Themethodofentermaterial(tofacilitatethedetectionofproductqualityjudgments).程序→質(zhì)量治理文件Programs→QualityManagementdocuments點擊“添加”輸入材質(zhì)名稱Click“Add”toentermaterialsnames點“保存”Click“Save”.點“具體數(shù)據(jù)”Click“detaileddata“輸入“元素〔具體依據(jù)工藝要求保存，假設(shè)出錯點編輯來修改。Entertheupperlimitandlowerlimit(Accordingtothetechnicalrequirements),alsotoincreasethelinethroughthekeyboard“↓“,allinputiscompleted→save.Ifmakemistakes,clickedittomodify.當測量完樣品后，點擊平均，再點擊程序→質(zhì)量治理文件→選擇你所輸入的材質(zhì)Whencompletelymeasuringthesample,clickthe“Average”,andthenclick“Program”→“Qualitymanagementfiles”andchoosethematerialwhichyouinput.看出是否合格Toseewhetherresultsqualified正常合格顯示的是黑色字樣Normalqualifyingshowstheblackwords高于上限顯示的是紅色字樣Abovetheupperlimitisshowninredthewords低于下限顯示的是藍色字樣Belowthelowerlimitisshowninbluewords表頭的輸入方法Theentermethodofthetablehead方法(1)：從“編輯”→修改樣品參數(shù)來轉(zhuǎn)變對話框相應(yīng)的內(nèi)容→確定Method(1)From“Edit“→modifythesampleparameterstochangethecorrespondingcontentsofthedialogboxOK方法(2)：雙擊屏幕上方的藍色區(qū)域來轉(zhuǎn)變對話框相應(yīng)的內(nèi)容→確定Methods(2):Double-clickthebluetopofthescreenareatochangethecorrespondingcontentsofthedialogboxOK〔這兩種方法的好處：屏幕上的數(shù)據(jù)還照舊存在〕(Thebenefitsofbothmethods:on-screendataalsostillexist)方法(3：點“下一個F”→來轉(zhuǎn)變對話框相應(yīng)的內(nèi)容→確)Methods(3):Click“thenext(F3)“ →tochangethecorrespondingcontentsofthedialogbox→OK(Thedatawilldisappearandbecomeablankscreeninthisway)〔注：材質(zhì)的選取是通過對話框中材質(zhì)項對應(yīng)的下拉菜單項選擇的〕(Note:selectthecorrespondingitemsthroughdialogMaterialpull-downmenu)數(shù)據(jù)的存儲和查詢方法Themethodofdatastorageandquery平均值存儲方法：Storageoftheaveragevalue:在屏幕上激發(fā)出數(shù)據(jù)Inspirethedataonthescreen點擊“平均”Clickthe“Average“(3)“文件”→“存儲”“File“→“Storage“查詢：點擊“系統(tǒng)維護”里面的“分析結(jié)果查詢”會消滅相應(yīng)的對話框，可依據(jù)表頭所記錄材質(zhì)名、品名規(guī)格等進展查詢，也可多條件組合查詢。Query:Click“theinquiriesofanalysisresults“inside“SystemMaintenance“,thenthecorrespondingdialogboxwillappear.Youcanqueryaccordingtothematerialnameandspecificationrecordedintheheader,alsobecombinedmulti-condition.全部數(shù)據(jù)存儲方法：Alldatastoragemethods:點擊“保存到文件”Click“Savetofile”.選擇所要保存的位置Selectalocationtosave.清理火花臺和廢氬管CleaningSparkStandandargontube作法Process關(guān)閉光源按鈕Turnoffthelightsourcebutton拿掉火花臺罩，放在椅子上Removethecoverofthesparkstandonachair拔掉通廢氬氣的藍色膠管Unpinthebluetubepassingwasteargon.用3mm的內(nèi)六角扳手把火花臺板卸掉〔先松開對角的螺絲，擦干凈火花臺板。Relieveandcleanthesparkstandplatewiththe3mmhexagonalwrench.(Loosenthescrewdiagonalfirst).用吸塵器將臺板下面空腔里的灰塵吸干凈Cleanthedustinthecavitybelowthetablewithavacuumcleaner把火花臺板放回原位Putthesparkstandback.把極距規(guī)長端放在火花臺板中心孔處，套住電極，用內(nèi)六角扳手把螺絲擰上PuttheFar-gaugeinthecenterofthesparkstandplate,entangletheelectrodes,thentightenthescrewswithhexagonwrench.用極距規(guī)短端把電極壓下去(確定要壓到底)，看看極距規(guī)是否與火花臺板接觸良好，假設(shè)不好，先將前端的螺絲卸開，再用T型扳手卸開頂絲,調(diào)整好位置，在上好頂絲，最終擰上前端螺絲。Usingtheshortendofthegaugetopresstheelectrodedown(mustbepressedtotheend),toseewhetherthegaugeiswellcontactwiththesparkstandplate.Ifbad,releasethefrontscrewfirst,thenreleasethefasteningscrewbyaT-typewrench.Tightenthefasteningscrewafteradjustedtotheappropriatelocationandtwistthefrontscrewfinally.蓋上火花臺罩。并用試樣把激發(fā)口蓋住。Coverthesparksplatform,andtheinspireholeshouldbecoveredbyaspecimen.(10)到“東方程序”中→“儀器”→點“氬氣沖洗”“Orientalprogram“→“Instrument“Aronflush“翻開儀器下面板，把廢氬管擰下來，用手指堵住藍管，猛松，把灰吹出，反復(fù)幾次，并保證瓶內(nèi)水在1/2-2/3處。Opentheinstrumentunderneathpanel,repeatedseveraltimes,andtoensurethatthewaterbottleat1/2-2/3.再到“東方程序”中→儀器→把“氬氣沖洗”前面的“√”去掉。“Orientalprocedures“→Instruments→removed“√“infrontofthe“argonflush“把下面板裝好。Installthecoverofthesparkstandandtheunderneathpanel.(14)把光源按鈕翻開Turnonthelightsourcebutton.(15)激發(fā)廢舊試樣直至數(shù)據(jù)穩(wěn)定Inspirethewastesamplesuntilthedataisstable.留意事項Notes按時清理火花臺，每周一次；Cleanupthesparkstandontime,onceaweek.清理火花臺時必需關(guān)閉光源，防止意外啟動造成損害。取下臺罩后且必需先拔下廢氬管，防止清理內(nèi)腔時，將液體吸入火花臺和污染透鏡，造成儀器損壞和影響測量；The“Source”mustbeturnoffwhencleaningthesparkstandtopreventtheinjurycausedbyaccidentalactivation.Unpinthebluetubepassingwasteargonfirstaftertakingdownthestandcover,topreventtheliquidabsorptionintothesparkstandandpollutelenswhencleaningtheinnerchamber,resultinginequipmentdamageandaffectthemeasurement;清理火花臺時，臺板及其四周如有激發(fā)痕跡，應(yīng)用細砂紙磨平，防止放電產(chǎn)生；Whencleaningthesparkstand,ifthereareinspiremarksonthestandplateandthesurrounding,shouldbesandpaperedsmoothtopreventdischarge.電極磨損應(yīng)準時更換，或許每半年換一次，可依據(jù)使用頻率自行設(shè)定更換時間。Electrodewearshouldchangeintime,probablyinonceeverysixmonths.Alsocansetthereplacementtimeinaccordancewiththeoperatingfrequency.電極安裝必需用極距規(guī)固定好，保證中心矩和深度；Electrodesmustbefixedwellbythegaugetoensurethecentralmomentanddepth.清理完火花臺之后要對儀器進展校準，即：標準化、類型標準化，然后分析試樣。Youshouldrecorrecttheinstrumentaftercleaningthesparkstand,profile,standardization,typestandardization,andanalyzethesample.擦透鏡Cleanthelens具體步驟:Concretesteps:關(guān)閉“高壓”開關(guān)。Closethehighvoltageswitch.拆掉上蓋螺絲，掀開儀器上蓋Removethecoverscrew,lifttheinstrumentonthecover.〔留意透鏡抽板上的定位螺絲不要動，否則后果很嚴峻〕Holdupthelensboard(Notethatthepositioningscrewonthelenscannotbemoved,otherwisetheconsequenceisveryserious).用透鏡紙〔或脫脂棉〕由中心向四周輕輕擦拭，將透鏡外表的污跡擦干凈。Usealenspaper(orcottonwool)towipethelensgentlyfromthecentertoaround,cleanthestainsonthesurfaceofthelens.用吸耳橡膠球?qū)⑼哥R外表的毛屑或紙屑吹干凈。Usearubberpipettebulbtoblowoffthetoflockorscraponthesurfaceofthelens.輕輕壓下透鏡抽板，聽到和下面接觸的響聲，蓋上儀器上蓋。Gentlypressdownthelensboarduntilhearthesoundofcontactwiththeunderside,coveronthecoveroftheinstrument.Turnontheorientalprogram→Instrument→Dete