The Siemens 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.
UV Scanner for flame detection with NPSM threaded connection for LFL (accepts NPT pipe).
AGG02 – Heat insulation quartz glass lens with spring washer and O-ring for QRA…
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SIEMENS QRA… UV SCANNER:
CE, EAC, RoHS, UR, CSA Certified and FM Approvals
QRA4.U – Flame Detector, with NPSM threaded, normal sensitivity
QRA4M.U – Flame Detector, high sensitivity