QRA4.U

The Siemens QRA4.U is a product that belongs to the QRA series of ultraviolet flame detectors manufactured by Siemens, a multinational conglomerate company specializing in industrial engineering and technology. The QRA4.U is designed to detect and monitor the presence of flames in various industrial combustion processes.

The QRA4 Flame Detector is used for the supervision of gas flames, yellow- or blue-burning oil flames, and for ignition spark proving in intermittent operation.

QRA4.U is used with the following types of Siemens burner controls:

LFL

LFE1

LFE10

LFS1

LGB2 / LGB4 with AGQ1

LME21…C2 / LME22…C2 with AGQ3

LME39…C2 with AGQ3

LME41…C2 / LME44…C2 with AGQ3

LME7

LMV26.300 with AGM60.1

LMV27.100

LMV36.520 with AGM60.4

LMV37.4

LMV5 with AGQ1