QRB1系列火焰探測(cè)器-電眼(SIEMENS) QRB1系列火焰探測(cè)器-電眼品牌：SIEMENS（西門(mén)子）產(chǎn)地：德國(guó) 產(chǎn)品介紹PhotoresistiveflamedetectorsforusewithLandis Staefaburnercontrols,forthesupervisionofoilflamesinthevisiblelightspectrum.Theflamedetectorsareusedprimarilyinconnectionwithburnercontrolsforsmallburners.Withthistypeofflamesupervision,theradiationofoilflamesinthevisiblelightspectrumisusedforgeneratingtheflamesignal.Thelight-sensitiveelementisaphotoresistor.Whenthereisnolight,thedetector sresistanceisintheM range.Theresistancedropsastheintensityofilluminationincreases(k range).IncontrasttotheseleniumphotocelloftheRAR...detectors,glowingfirebrickinthecombustionchambercanbedetected. 技術(shù)參數(shù)主要參數(shù)保護(hù)等級(jí)IP40當(dāng)連接至LOA.../LAL...時(shí)，電纜長(zhǎng)度1.5m最大連接電纜2*0.75mm2,5.1mm直徑重量20...35g環(huán)境條件運(yùn)輸環(huán)境IEC60721-3-2內(nèi)部條件class2K2溫度范圍-20...+60 C濕度 95%運(yùn)行環(huán)境IEC60721-3-3內(nèi)部條件class3K5機(jī)械條件class3M2溫度范圍-20...+60 C濕度 95%不得進(jìn)水