Siemens QRB1 Series Manual

CC1N7714en17.07.2006Building TechnologiesHVAC Products7 714QRB1...A with large flange QRB1...A with small flange QRB1...B QRB3... withand clamp and clamp with plug flange and clampPhotoresistiveFlame DetectorsQRB1...QRB3...Photoresistive detectors for use with Siemens burner controls, for the supervi-sion of oil flames in the visible light spectrum.The QRB… are used primarily in connection with oil burner controls in intermit-tent operation.The QRB... and this Data Sheet are intended for use by OEMs which integrate theflame detectors in their products.UseThe QRB... flame detectors are designed for the supervision of yellow-burning oilflames in connection with burner controls type LAL..., LOA..., LMO... and LMV…They are suited for frontal or lateral (90°) illumination.The maximum spectral sensitivity of the QRB… is about 600 nm, thus giving full con-sideration to the maximum level of visible light radiation of yellow-burning oil flames.Since the QRB… also acquires certain parts of the radiation spectrum of other lightsources (boiler room lighting, solar radiation, etc.), the standard regulations regardingsafety in connection with extraneous light still apply.