FlameRectification：火焰矫正

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1、FlameRectificationRememberOhm’sLawE=IXRAppliedACvoltage+-++-AlternatingCurrentSineWaveBasicElectricalCircuit+-SOURCECONDUCTORLOADCONTROLFlameRectificationcircuit!Whatdevicesareusedforelectrodes?FlamerodBurnerTheVoltageSourceistheIgnitionControlThe“load”istheflamesensingcircuitinsidethecontrol

2、Theconductorsaretheelectrodesalreadyidentified.Whatactsasthe“switch”?Theflamecompletesthecircuit.FlameRectificationCircuitFlameSenseCircuitOneelectrodeislargerthantheothercausingelectronflowtobegreaterinonedirectionthanintheother.Comparetheburnersizetotheflamerodsize.+0-5aCurrentflowwhenflam

3、erodispositive+_FG+0-1aCurrentflowwhenflamerodisnegative+_FGAppliedACvoltage-++-aaEffect=4apulsatingDCEffectiveFlameSignalRememberOhm’sLaw?Whathappensinacircuitifresistanceincreasesandvoltagestaysthesame?FlameRectificationCircuitTypicalFlameDetectionCurrentNeedtomeasureACAaswellasDCAT

4、ypicalin-shotburnerDCcurrentis2-5Awitha4-8AACleakage.DCcurrentislessthan1AandACcurrentisatorabove4A1.Flamesignalisweak2.CorrectiveactionisrequiredDCCurrentvs.ACCurrentDCCurrentvs.ACCurrentDCCURRENTACCURRENTACDROPOUT0.53.9410.391.04.3717.281.54.8820.12.05.4520.302.56.2024.373.06.9524.203

5、.58.2924.22RememberOhm’sLaw?Whathappensinacircuitifresistanceincreasesandvoltagestaysthesame?Whatcanaffecttheresistanceinthecircuit?Whatelsecanaffecttheflamesignal?FlameRectificationCircuitIncreasedcircuitresistancesBurneroxidationNon-secureburnerFlame“liftoff”LoosewireconnectionsContaminated

6、flamesensorFaultygroundsNogroundsReversepolarity