仪表系统试验方案(中英)

仪表系统试验方案TestSchemeofInstrumentSystem1、编制说明：间交接前仪表工程施工的最终一道工序，是对已完仪表工程的检验，是仪表系统正常投运的保障。为了较好的完成仪表系统试验，特编制此方案。DCSPLC系统试验现场局部可参见此方案。如为现场总线系统，则需另外编写。2、编制依据：、施工合同及协议。、工程施工图及相关设计文件。、产品说明书。〔包括：工程名称、范围、地点、规模、特点、工期要求等：序号名序号名称单位数量1压力检测〔报警〕回路回路2压力调整回路回路3温度检测〔报警〕回路回路4温度调整回路回路5流量检测〔报警〕回路回路6流量调整回路回路7液位检测〔报警〕回路回路8液位调整回路回路9分析调整回路回路10分析检测回路回路11工艺机械、开关报警回路回路12连锁系统回路13气体报警回路回路4、仪表系统试验的一般规定：GeneralDescriptionofInstrumentsystemtest:4.1、系统试验应具备以下条件：Conditionsofsystemtestasfollowing：设计要求。carriedoutsingle-calibrationandinstalled.Itsspecificationandtypeshallbecompliancewithdesignrequirement.合格。Thepositionofsampling-sourcecomponentsshallbeproper.Impulsepipingshallbecorrectlyinstalled.Blowingandpressuretesthavebeensuccessfullycompleted.清洁、枯燥、压力稳定的仪表空气PneumaticsignalpipeshallbecompliancewithdesignBlowingandairtighttestisOK,andthepipinghasbeenfullofclean,dryandsteady-pressureinstrumentair.接触良好。Wiringandinsulationofelectric-loophavebeeninspected.Terminalconnectionistight,correctandwellcontact.、接地系统完好，接地电阻符合设计要求。Earthingsystemiswellanditsresistanceshallcomplywithdesignrequirement.险丝容量符合图纸要求。Powersupply,voltage,frequencyandcapacityshouldmeetrequest.Mainswitch,sub-switchesandfusecapacitanceshallaccordwithdrawingrequirement.硬件及软件试验检查已完成DCS；假设监视及掌握局部为常规仪表，应具备送电条件。sectionsincludingDCSandPLC,systembeenenergized;Softwareandhardwaretestandcheckinghavebeenfinished.Iftheyaregeneralinstrument,energizingconditionhasexisted.、每个系统试验之前应按系统中仪表要求的时间进展通电预热。Carryingoutenergizingtopreheataccordingtospecifiedtimeofsysteminstrumentbeforetestforsystem.、做检测系统试验时，试验点一般应按设计量程〔或信号〕的0%、围符合设计要求，显示的最大误差值及回差值应小于该系统的系统误差值〔系统误差为该系统参与试验的各单台仪表允许误差平方和的平方根值。Whentestfordetectingsystem,choosingthreepointsupanddownruntestofdesignrange0%,50%,100%,100%,50%,0%.Verifyingindicationscopeofindicatingunitscorrespondwithdesign.Themaximumerrorandreturningerrorshallbelessthansystematicerror.(Systematicerroristhesquarerootoftoleranceerrorsquaresumofeverysingle-instrumentbeingparticipatedinsystemtest.)允许的系统误差值。Whenactinginterlockalarmtest,verifyinginterlockalarmingsettingvaluefirstly.Testerrorshallnotbegreaterthanallowance.在试验中转变过状态的设备及线路恢复到原始状态或合理的状态。Aftersystemhasbeentested,thoseequipmentswhoseconditionhaschangedduringtestsuchaswire-route,boxcovers,channelcovers,pipelinesandvalvesshallbeenregainedtoprimaryorreasonablecondition.中间交接的过程，因此，系统试验人员应会同甲方、监理、工艺操作人员共同进展试验，并按交工表格要求做好系统试验记录。Systemtestisthelastprocessofinstrumentconstructionandintermediateacceptancebetweencontractorandclient.Therefore,Instrumentregulationworkertogetherwithclient,supervisor,andprocessoperators,andrecordsystemtestrecorderaccordingtohandingoversheet.期内。Precisionofstandardinstrumentappliedinsystemtestshallbeaccordedwithrequirement,andbewithininspectingvalidperiod.5、试验方法：Testmethod:、压力检测回路试验：PressuredetectingLoopTest:、气动仪表检测回路：Pneumaticinstrumentmeasurementloop:把压力信号发生器〔带压力显示〕压力输出口和气动压变的测量口连〔显示仪表读数应以表针不再移动为准，显示仪表的试验误差值应符合要求。Connectpressureoutletofpressuresignalgeneratorwithmeasurementmouthofpneumaticpressuretransformer.Joinoutputofpneumaticpressuretransformertoteeandconnectingstandardpressuretransformerandindicator.Accordingtoequipmentspecificationtable,makesignalgeneratoroutputslowlyandtransmitter,andwritedowntestresultapart.(Indicationinstrumentpointershallnotmove.)Testerrorofindicationinstrumentshallaccordwithrequirement.、电动仪表检测回路Electricalinstrumentmeasurementloop:把压力信号发生器〔带压力显示〕压力输出口和压变的测量口连接，记录试验值，显示仪表的试验误差值应符合要求。Connectingpressureoutputofsignalgenerator(withpressureindication)withmeasurementmouthofpressuretransformer.ShuntingstandardcurrentmeterintosystemloopInspectingandmeasurementtransmitteroutput,selectingrangeintermofequipmentspecificationtable,makingsignalgeneratoroutputslowlythreeupanddownpoints’valuesoftransmittermeasurementlimitoneafteranother,takingdowntestresultseparately.Andtesterrorofindicationinstrumentshallcorrespondwithrequirement.、智能压力变送器作为测量仪表：Takingintelligentpressuretransmitterasmeasuredinstrument:DCS查该变送器位号、单位、量程及温度应符合要求，然后做修改参数试验。0%、50%、100%、50%、0%，DCSPriortosystemtest,carryingoutinlineself-inspectionbyintelligentmanual-operator,attheplacewheresystemgoesthroughcontrolroomterminal.ConnectandchecktransmittertagNo.,unitandrangecompliancewithrequirementandfieldsituation.Andthen,modifyparametertotestandinspectlocation-outputcurrent.Afterfinishingtest,doingsystematicsimulationtest.、温度检测回路试验：TestofTemperatureCheckingandMeasurementLoop:5.2.1、线路电阻的测量与配制：Measureandconfectadescriptionofcircuitresistance.a、热电阻测量系统〔不带温变：系统试验之前应首先把温度显示单元后的信号输入线拆下，信号电缆从热电阻接线端子上拆下分别短接，测量线路阻值分别除2，该阻值加上显示单元后接线端子上每根线上的锰铜无感调整电阻值应和显示单元标尺板上标明的外接线路电阻值相等，允许误差为±0.1Ω。RTDmeasurementsystem(withouttemp-changer):Dismount signal input-line which be behindtemp-indicationunitbeforetest.DisconnectingsignalcablefromconnectionterminalofRTDandshort-connectionrespectively.Measurecircuitresistanceanddivide2apart.Theresistanceaddedthatofmanganese-coppernon-inductionregulationofeverywireonconnectionterminalbehinddisplayunitshallbeequaltoexternal-connectionresistancenotedondisplayunitscaleboard.Deviationerroris±0.1Ω.b、由热电偶、动圈仪表组成的测温系统：Temperaturemeasurementsystemcomposedofthermocouplemovable-ring:系统试验之前首先从动圈仪表后拆下输入线，测量线路电阻值，该阻等，允许误差为±0.1Ω。Priortotest,atfirst,disconnectinputwirefrombackofmovable-ringinstrument,andmeasurementcircuitresistance.Itaddedresistancemanganese-coppernon-inductionregulationshouldbeequaltoexternal-connectionresistancemarkedonscaleboardofmovableringgauge.Deviationerroris±0.1Ω.TakingRTDasmeasurementcomponent:在进展系统试验之前，应先查看温度显示仪表显示值应为该热电阻所上，依据设备规格表要求分度量程，查对对应的温度比照表，Priortosystemtest,firstly,observingcarefullyindicatingvalueoftemperatureindicationinstrumentshallbethesituationtemperature,whichRTDwaslocated.Andthen,dismountingcablefromRTDconnectionterminalandconnectingtostandardresistancebox,choosingcorrespondingdivisionrangeaccordingtoequipmentspecificationtable,lookingupcorrespondingtemperaturecontrasttable.〔50%测量点可选四周相对整数的电阻值，分别记录试验值，显示仪表试验误差值应符合要求。Givingthree-pointupanddownrunresistanceofrangerespectively(50%measurementpointcanselectresistancenearrelativeinteger)andwritingdowntestrecorder.Testerrorofindicatinginstrumentshallcomeuptorequirement.、热电偶作为测量元件：Consideringthermocoupleasmeasurementcomponent:在进展系统试验之前，应先查看温度显示单元显示值应为该测温点的环境温度然后把补偿导线从热偶接线端子上拆下，按正负接到mv发生器mvmv显示仪表的试验误差值应符合要求。Priortotest,firstly,chekingupindicationvalueoftemperatureindicationunitshallbetheenvironmenttemperatureofmeasuredpoint,then,dismountingcompensationlead-wirefromthermocoupleconnectionterminal,andconnectingtomvgeneratorintermofplusandminus.Selectingdivisionrangeaccordingtoequipmentspecificationtable,lookingupcorrespondingmvcontrastthree-pointupanddownrunvaluesofrange(50%measurementpointmaychoosenearrelativeintegermvvalve)andrecordingtestvalue.Testerrorofindicatinginstrumentshallaccordwithrequirement.、流量检测回路：FlowdetectingLoop:、常规流量计作为测量仪表：Havinggeneralflowmeterasmeasurementinstrument:试验之前，应首先确认流量计安装方向及前后直管段应符合要求，然验值，显示仪表试验误差应符合要求。Beforetest,verifyingflowmeterinstallingdirectionandfrontandbackstraight-pipeshallconformtorequirement,thendismountingsignalwirefromtheterminalofflowmeter,sendingoutcorrespondingsignalofcurrentorfrequency,andrecordingtestresult.Testerrorofindicationinstrumentshallcomeuptorequirement.〔流量差压变送器〕作为测量仪表：TakingD/Pflowinginstrument(flowingD/Ptransmitter)astobemeasuredinstrument:把压力信号发生器连接到差变的正压室，负压室通大气，标准电流表串联到测量回路里，分别使压力信号发生器输出设备规格表要求量程的0%、25%、100%、100%、25%、0%，对应显示值应为流量量程的0%、50%、100%、100%、50%、0%，记录试验值，显示仪表试验误差应符合要求。Connectpressuresignalgeneratortotransformerpositive-pressurechamber,andnegativepressurechambertoatmosphere.Makestandardcurrentmeterconnectinseriestomeasurementloop.Letpressuresignalgeneratoroutput0%,25%,100%.100%,25%,0%ofrangeaccordingtoequipmentspecificationtable,andcorrespondingindicationshallbe0%,50%,100%,100%,50%,0%offlowingrange.Takingdowntestresult.Errorshallbewithinrequirement.、带流量计算机的质量流量计作为测量仪表：Keepingmassmeterwithflowingcomputerasmeasurementinstrument:先使流量计算机进展自检，通过后，从流量计算机里找到被测介质的〔假设有〕显示值应符合当时状况，Afterpassingitself-inspectionofflowingcomputer,findparameterssuchasviscosity,density,flowingrangeofmediumtobemeasuredfromflowingcomputerandkeepthemthesameasspecificationinstruction.Indicationofpressureandtemperaturecompensation(ifexist)shallbecompliancewithfieldcondition.流量显示，记录试验值，最大误差应符合要求Inputthree-pointupanddowngoingsimulativesignaltoflowingcomputerseparately,correspondingindicationwillappearandwritedowntestresult.Thebiggesterrorshallbecompliancewithrequirement.对于质量流量计，在开表前，应再进展一次零点校准。方法是：被测可。Zeropointregulationshallbecarriedoutagainformassflowmeterbeforeopenthegauge.Methodis:Tobemeasuredobjectisfilledwithcheckingelements,withoutbubble,thenactzero-pointcalibrationthroughflowingcomputer、物位检测回路：Displacementdetectingloop:、外浮筒液位计作为测量仪表：Takingexternalpontoonlevelmeterasmeasurementinstrument:在该系统中串联一标准电流表，依据被测介质的比重计算出用水校验〔计算公式见单台仪表校准试验方案出三点上下行值，分别记录试验值，显示仪表的试验误差应符合要求。Connectinseriesastandardammeterintothissystem.Accordingtodensityofbeingmeasuredmedium,calculatemeasurementrangewithwater.(Calculationformulareferstotestplanforregulation.)Feedwateratdrainageoutlettogivethree-pointupanddownrunvalue,andrecordtestresult.Testerrorofindicatorshallmeetwithclaim.表查对该液位是否有迁移量，Forsingleordoubleflangeleveltransmitterasmeasureinstrument,checkingthelevelmeterwhetherhastransferenceornotaccordingtocalculationtableoflevelinstrument.假设没有，显示单元液位应指示为0〔双法兰应把正负压室压力传导示为零下；levelindicatoriszeroifnot,(Removingoffpressure-differencecausedbypressuretransmitting medium of positive and negativepressure concerningdouble-flange)Ifexistenceoftransference,levelindicationshallbeunderzeromA发生器，分别送出三点mA值，显示仪表试验误差应符合要求。Thendisconnectsignalcablefromtransmitterterminal,connectintomAgenerator,andsendoutthree-pointupanddowngoingmAvalueseparately.Testerrorofindicationinstrumentshallcomeuptorequirement假设是智能变送器作为测量仪表，在进展系统试验前，应在DCS系统调入智能变送器组态在线自检，检查该变送器位号、单位、量程及温度应符合要求，然后做修改参数试验。然后在现场用手持式通讯器强制变送器0%DCS检查其精度是否符合要求。位计作为测量仪表。Keepingmaterial-facelevelgaugesuchasinternalpontoon,radio-frequency,radar,steelstrapetc.asmeasurementinstrument.料面液位计的系统试验应和甲方有关人员协商，假设可能，应由工艺〔或别的允许的介质5Carryoutsystemtestofmaterial-surfacelevelmeterwiththecooperationofclientrelevantpersonnelifpossible,feedwater(orotherpermissivemedium.)tomeasurementcontainerwiththecooperationofprocessspecialworker,markzero-pointandrange,thendo5-pointtest.假设不行能，应首先把信号电缆从液位计端子上拆下，直接用信号发车阶段，用水或物料再做校准试验。Disconnectsignalcablefromlevelmeterterminalifimpossible,andoutputcorrespondingsimulativesignalwithsignalgenerator.Errorshallcomeuptorequirement.Actcalibrationtestwithwaterormaterialduringthelinkagecommissionorchemicalcommencetest-drive.、液位差压变送器作为测量仪表：HavingD/Pleveltransmitterasmeasurementinstrument.该变送器可参考流量差压变送器进展系统试验。TestthetransmitterreferringtoD/Pflowtransmitter5.5、成份检测系统：Compositionchecking-upsytem在线表应按说明书要求，先通电恒温肯定时间，按校验的程序位值及满量程值。Accordingtospecification,energizeandkeepconstanttemperaturetoonlineanalysisinstrumentforsometimefirstly.Inputtingsample,samplegas,andmarkingzero-pointandrange.Correspondingzero-pointvalueandfullrangevaluewillappearinindicationunit.mAmAshowwillberight,and,errorshallbepermissive.、报警系统试验：Alarmingsystemtest:、检测系统的报警试验：Alarmingtestofdetectingsystem:在进展检测系统报警试验时，在检测仪表〔元件〕处加信号至对应的光熄灭，记录报警解除值，报警误差值应符合要求。Whenactingalarmingtest,pressurizesignalfromcheckingupinstrumentuntilcorrespondingflashalarmandacousticalarmandwritedownalarmingvalue.Then,pressconfirm-pushbutton,flashalarmshallturnflashintocommonlightandacousticshallstopalarming.Pressurizesignaluntilnormallightdisappearanceofflashalarmandtakedownalarmabsolvingvalue.Alarmerrorshallcomplywithrequirement.DCS〔元件〕处加信号至对应的DCS点显示报警并记录报警值，然后按确认按钮，再加信号、压力开关作为为检测元件：Takingpressureswitchasdetectingelement:用压力信号发生器给高报〔低报〕的压力开关缓慢加压〔减压应的闪光报警器及音响报警，记录报警值，然后按确认按钮，报警器应有相应动作。Increase(reduce)pressuregraduallytohighalarm(lowalarm)pressureswitchwithpressuresignalgeneratoruptocorrespondingflashalarmoracousticalarming,andrecordalarmingvalue.Thenpressconfirm-pushbuttonandalarmshallhavecorrespondingaction.加压〕至闪光报警器熄灭，记录报警解除值，报警误差应符合要求。pressureuptoflashalarmgoingoutandrecordalarm-absolvingvalue.Alarmerrorshallcomeuptorequirement.DCS〔低报〕的压力开关缓慢加压求。、温度开关、流量开关、液位开关作为检测报警元件：Regardtemperatureswitch,flowswitch,levelswitchasdetectingalarmelement:作状况应符合要求。Applying the above switches with short-connectionorbreakingthoseswitchesinordertoinspectflashalarmandalarmingacousticalarmwhichactionshallbecompliancewithrequirement.DCS警点动作应符合要求。、机械位置开关作为检测报警元件：Takingmachinepositionswitchasalarmingelement:机械量开关可以用手转变开关状态检查报警器动作状况应符合要求。Inspectalarmactionthroughmanualchangingswitchcondition.Actionshallcomeuptorequirement.对DCS系统：机械量开关可以用手转变开关状态检查DCS报警动作状况应符合要求。、气体报警器报警系统：Gasalarmingsystem表应报警，然后用标准样气接触探头，仪表应报警，并指示相应含量。pushbutton,pointershallshowalarmingvalue.Instrumentwillalarmifdisconnectanyonewire.Thenusingstandardsamplegastotouchprobe,instrumentshallalarmandshowcorrespondingcontentDCSDCS、联锁保护系统试验：Interlockprotectionsystemtest:锁动作值应符合要求，按钮、开关、电磁阀及向电气专业送的接点应动作灵敏、牢靠。Testalltheinterlocktermsandinterlockresultsseparatelywithoutinterlocksystem.Inspectinterlockactionshallcomplywithrequirement.Actionofpushbutton,switch,solenoidvalveandtheconnectionwithelectricequipmentshallbesensitiveandreliable.、由相关专业协作进展不带负荷的联锁试验。首先由相关专业人把联锁投上，按该联锁保护系统规律图，分别给出肯定的条件，掌握阀及掌握机泵起动的接触器应相应动作。Non-loadinterlocktestshouldbecarriedout withthecooperationofrelevantspecialty.Atfirst,verifyingloadingremovalbyrelevantpersonnelandnomaterialininterlockpipe.Thenkeepinterlocktermsnormalandputinterlockintouse.Givingcertaintermsseparatelyaccordingtologicdrawingsofinterlockprotectionsystem,controlvalveandcontactorofpumpstartershallhavecorrespondingaction.单机试车的同时进展，联锁设备工作正常后，全部联锁条件都应处于正常状态，联锁投上，按该联锁保护系统规律图，人为给出肯定的联锁条件，联锁设备应有相应的动作。burdeninterlockprotectiontestshouldbecarriedout withthecooperationofrelevantpersonnel.Thebesttimefortestisatthesametimeofsinglecommission.Afterinterlockdevicesnormallywork,allinterlocktermsshallbenormal.Puttinginterlockintouse,intermoflogicdrawingforinterlockprotectionsystem,givingartificially certain interlock term, devices shall havecorrespondingaction.、调整系统试验：Adjustmentsystemtest:、单回路调整系统试验〔DDZ-Ⅲ型调整器为例：Single-loopadjustmentsystemtest(takeDDZ-Ⅲtypeadjustorasexample)a、 调整系统的测量局部按相应的检测系统试验进展。adjustingsystemshallbeseparatelytestedaccordingtocorrespondingcheckingsystem.置，用调整器的手动操作机构分别输出三点上下行值检查调整阀应有相应动作，调整器和调整阀的动作方向应符合要求。Switchmanual-autoswitchofadjustortohardmanual,placeswitchintobecheckedlocation.Makingadjustoroutputthree-pointupanddowngoingvalue.Controlvalveshallhavecorrespondingaction.Actiondirectionofadjustorandcontrolvalveshallcomplywithrequirement能全行程动作，当调整器输出肯定值时，松开软手动开关时，调整器的输出应能保持，然后使软手动—自动、自动—软手动、硬手动—软手动—自动能实现无平衡无扰动切换。Turnmanual-autoswitchintosoftmanuallocation,andmakesoftmanualoperatingkeyincline.Controlvalvecanactwithinfullrange.Whenadjustoroutputcertaindata,releasesoft-manualswitchandoutputofadjustorcanbepreserved.Then,makesoftmanual-auto.、auto.-softmanualhardmanual-softmanual-auto.realizenon-disturbanceswitch.d、设定PIDPIDSpecifyPIDparameteracertainvalueandmakemeasurementpointerandspecifiedpointerhavecertaindeviation.Aftertransfertoautoswitch,outputchangeshallcomplywithPIDcurve.、基地式调整系统：Basetypeadjustmentsystem:如为温度调整，调整器指示为测量点环境温度。Ifbasetypeadjustorispressureadjustment,pressuresignalgeneratorshallbeusedtopressurizetocheckingexperiment.Ifitistemperatureadjustment,adjustorindicationshallbeconditiontemperatureofmeasuredplace.b应有相应动作。Setmanual-autoswitchinmanualposition,outputthree-pointupanddowngoingvaluewithmanualadjustor,andcontrolvalveshallhavecorrespondingaction.c、设定PIDPIDSpecifyPIDparameteracertainvalue,keepmeasurementpointerhavesomedeviation.Aftersite,outputshallcomplywithPIDcurve.forcomplexadjustmentsystem.aSeriesadjustmentsystemtestF2F2F1给定值主调节器副调节器执行器副对象副参数主对象主参数副测量变送主测量变送上图为串级调整系统典型方块图Assigned

Main

Vice

Receiver

Vice

Mainvalue vice mainAdjusto

Adjusto

Object

ObjectTheabovedrawingistypicaldiamondsforseriesadjustmentsystem.①、串级调整系统试验应首先按单回路调整系统进展主〔副〕调整器〔副调整器已改为外给定〕应相应变化。Duringtest,doingsingleopen-ringtestofmainadjustoraccordingassingle-loopadjustmentsystematfirst.Whenmainadjustoroutputchange,andspecifiedpointerofvice-adjustorwillchangecorrespondingly.(Vice-adjustorhasbeenturnedintoexternalassignment)②、手—自动开关置为自动，使主调整器输出为一恒定值，转变副测量参数，使副调整器测量与给定有一差值，则执行器应有相应变化。Placemanual-autoswitchinautolocation,andkeepmainadjustoroutputaconstantvalue.Varyvice-measurementparameter,andmakemeasurementofvice-adjustorandassignmentexistadifferencewhenactuatorshallhavecorrespondingchange.相应变化。parameterpreserveaconstantvalue,shiftmanual-autoswitchofmainadjustortoauto.Varymainmeasurementparameter,existadifferencebetweenmainadjustormeasurementpointerandspecifiedpointer,so,actuatorshallhavecorrespondingshift.b〔以单闭环比值调整系统为例，承受乘法器：singleclosed-ringratiotestsystemasexample,applyingmultiplier)给定系数给定系数K乘法器调整器执行器副物料Q=KQ主物料21副测量Q2主测量Q1上图为单闭环比值调整系统的典型方块图ModulusQModulusQ2=KQ1MultipliAdjustoActuatorViceMainerrMaterialMaterial.VicemeasurementQ2MainmeasurementQ1运算试验，置调整器的给定开关为外给定，乘法器的输出应对应调整器的给定针指示值，并等于主测量Q1

KCarryingoutopen-ringtestaccordingtosingle-loopadjustmentsystematfirst.Then,actingoperationtestwithmultiplier.Specifiedswitchofadjustorhasbeensetexternally.MultiplieroutputshallaccordwithpointerindicationvalueofadjustorandequaltoKQ1

(Q—mainmeasurement).1②、置调整器手—自动开关为自动，使乘法器输出为一恒定值，转变Q2Setmanual-autoswitchofadjustorinauto.Location,andmakemultiplieroutputaconstantvalue.VaryingvicemeasurementQ2,andkeepingsomedifferencebetweenadjustormeasurementandspecified value, actuator shall have correspondingtransformation.Q2

保持恒定值，转变主测量值，执行器应有相应变化。Keepvice-measurementQ2

constant,andchangemainmeasurementvalue.Actuatorwillhavecorrespondingchange。c、前馈调整系统〔以前馈—反响调整为例：Feed-frontadjustmentsystem(takingfeed-frontfeedbackadjustmentasexample).Thefollowingisitstypicalpanedrawing.以下图为前馈—反响调整系统的典型方块图反响测量反响测量给定－反响调整器执行器FeedbackFeedbackmeasuringGiving _FeedbackActuatorAdjustorTantalizerTargetGiving _Feed-frontAdjustorFeed-frontmeasurement〔前馈〕调整器的单独试验，试验时，先使前馈〔反响〕0。Doingsingle-testoffeedback(feed-front)adjustoraccording5.8.1atfirst.Whentest,makefeedback(feed-front)adjustoroutputzero.②、让前馈〔反响〕调整器输出肯定值，转变反响〔前馈〕测量，则调整器的正反作用方式是否正确。Letfeed-front(feedback)adjustoroutputacertainvalue,changefeedback(feed-front)measurement.So,valuewhichadderoutputtoactuatorshallbecombinationoftwoadjustorsoutputvalue.Becareful,whetheroutputactionandreactionstyleoffeed-frontadjustorisrightornot.d、选择性调整系统〔以锅炉连续型选择性调整系统为例：Selectiveadjustmentsystem(takingselectionadjustmentsystemofboilercontinuityasexample)压变压变给定－蒸汽压调整器低选器调整阀燃料压力对象蒸气压力对象给定燃气压—调整器压变上图为锅炉连续型选择性调整系统的方框图PressuretransfromitterPressuretransfromitterSpecifyingSteamSteampress-adjustor Control GasprePressureValveTargetLowpressureTargetSpecifyingGaspressureadjustorPressuretransmitterforselectionadjustmentsystemofboilercontinuitytype.验。试验时，先使燃料气〔蒸气〕调整器的输出为最大。Executingsingleopen-ringexperimentofsteamorcombustiongaspressureadjustoratfirstaccordingtosingle-loopadjustmentsystem.Duringexperiment,makecombustiongas(steam)adjustoroutputmaximum。②、让燃料气〔蒸气〕压力调整器的输出高于蒸气〔燃料气〕调整器〔燃料气〕调整系统，而随参数的变化调整〔蒸气〕压力调整器的输出低于蒸气〔燃〔蒸择的正确性。Ifletoutputofcombustiongas(steam)pressureadjustorbehigherthanthatof