QRA50M燃烧器专用火焰探测器光电管电眼SIEMENS西门子Theflamedetectorsareusedforthesupervisionofgasflames,yellow-orblue-burningoilflamesandforignitionsparkproving.Highsensitivity.•Withthistypeofflamesupervision,theUVradiationemittedbygasoroilflamesisusedtogeneratetheflamesignal.•Theradiationdetectorc***istsofaUV-sensitivecellwith2electrodes,whichignitewhenilluminatedwithradiationinthe190...270nmrangeofthespectrum,therebytriggeringacurrentintheflamedetectorcircuit.•TheUVcelldoesnotrespondtoglowingfirebrickinthecombustionchamber,daylightorlightfromtheboilerroomillumination.Thedie-castalloyflamedetectorheadissealedwithaquartz-glasslens.Inadditiontotheplug-inUVcell,theheadcontainsarotatingshutterwhich–forthepurposeofcontinuoustestingoftheUVcell’sstrikingandextinctionvoltageperformance–interruptstheUVradiationattherateof3timespersecond.Theshutterisdrivenbyasynchronousmotorwhichissuitedforcontinuousoperation.Theflamedetectorisattachedtotheviewingtubebymeansofaflangedmountingcouplingwhichhasa1in.internalthread.A3/8in.tappingonthesideofthecouplingenablesacoolingairconduittobeconnected,providedthatdry,dust-andoil-freecompressedairis***ailable.技术参数主要参数UV单元平均寿命10000小时（在50oC）炉膛背压500mbar***大保护等级IP54重量750g环境条件运输环境IEC60721-3-2内部条件class2K2机械条件class2M2温度范围-55...+50oC湿度<95%运行环境IEC60721-3-3内部条件class3K5机械条件class3M2温度范围-20...+50oC湿度<95%不得进水网站标注价格为参考价，产品质量有保证，长年备有大量库存现货，随时要货，随时发快递。***范围内1-3天可以到达。如需了解更详细，请来电索取技术资料。旺旺:wellpat电话：0755-27675552，13670021005,13670007925EMAIL:wellpat@***：2230751716，2399181104;网站：http://.)