7712 Flame Detectors QRA2... QRA10... QRA53... QRA55... - Power ...

OrderingWhen ordering, please give type references according to «Type summary».Technical dataGeneral detector dataAverage life of UV cellPerm. combustion chamber pressure- QRA10...- QRA10... + AGG03 or AGG02Degree of protection- QRA2...- QRA10...- QRA53..., QRA55...Mounting positionWeight- AGG01- AGG02- AGG03- AGG05- AGG06- AGG07- AGG16.C- QRA2...- QRA10...- QRA10... + AGG03- QRA53..., QRA55...Ignition cable (only QRA2...)approx. 10,000 hours at max. 50 °C,higher ambient temperatures reduce considerablythe cell’s lifemax. 50 mbarmax. 500 mbarIP 40IP 54IP 54optionalapprox. 10 gapprox. 10 gapprox. 10 gapprox. 170 gapprox. 160 gapprox. 1330 gapprox. 650 gapprox. 60 gapprox. 740 gapprox. 750 gapprox. 900 g2 x 0.75 mm²; 5.1 mm dia.EnvironmentalconditionsTransportClimatic conditionsMechanical conditionsTemperature rangeHumidityOperationClimatic conditionsMechanical conditionsTemperature rangeHumidityDIN EN 60 721-3-2class 2K2class 2M2-20...+60 °C< 95 % r.h.DIN EN 60 721-3-3class 3K5class 3M2-20...+60 °C< 95 % r.h.Condensation, formation of ice and ingress of water are not permitted!FunctionWith this type of flame supervision, the UV radiation emitted by gas or oil flames isused to generate the flame signal.The radiation detector consists of a UV-sensitive cell with 2 electrodes, which ignitewhen illuminated with radiation in the 190...270 nm range of the spectrum, therebytriggering a current in the flame detector circuit.The UV cell does not respond to glowing firebrick in the combustion chamber, daylightor light from the boiler room illumination.7/8Siemens Building TechnologiesCC1N7712enHVAC Products 08.05.2003

DimensionsDimensions in mm30QRA2... QRA10... AGG029787 22,81025...50 2,5M44818SW20521822,5SW22120QRA5...7712m07/05973 8 ''7712M04R1 ''UV7712m02/0997Pg13,565664 241 88550 QRA5... with AGG05, AGG06, AGG07, AGG16.C and AGM19 AGG033622,824.37R2R0.3R4R230AGG16.C25°315Company logo toLN 3 8380 01020.2 mm elevated3104818247712m09e/1001D7712M034 241 8898 036187R425°30Company logo toLN 3 8380 01020.2 mm elevated33 10 2448157712m10e/1001AGG16.C7712m01/0403Incidence of radiationClamp for direct mounting on the burner or the AGG16.C8/8©2003 Siemens Building TechnologiesSubject to change!Siemens Building TechnologiesCC1N7712enHVAC Products 08.05.2003

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