UV Flame Detectors BPZ:QRA55.E27

Siemens QRA55.E27 UV Flame Detector

The Siemens QRA55.E27 is a continuous-operation UV flame detector that uses an integrated motorized shutter to run periodic self-checks, preventing the sensor from failing in a dangerous flame-on state. Its die-cast aluminium housing carries a 69 mm detector tube (190-270 nm UV spectral range, normal sensitivity) and connects via a separate AGM19 connecting cable, with the AGR4 502 4065 0 replacement UV cell available for servicing. Rated IP65 for ambient temperatures of -20°C to +60°C with a nominal UV cell life of around 10,000 hours at 50°C, it draws 2.5 VA on AC 220-240V, 50-60Hz supply (+10%/-15%). Made in Germany by Siemens, it is designed for continuous-operation burner controls such as the LGK16 and LGI16 series, and directly replaces the discontinued QRA55.C27.