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SIEMENS photocell/ flame detector QRB1
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- Product description: SIEMENS photocell/ flame detector QRB1
INTRODUCTION
***Photoresistive flame detectors for use with Landis & Staefa burner controls, for the supervision of oil flames in the visible light spectrum. The flame detectors are used primarily in connection with burner controls for small burners.
· ***With this type of flame supervision, the radiation of oil flames in the visible light spectrum is used for generating the flame signal.
· ***The light-sensitive element is a photoresistor.
W***When there is no light, the detector′s resistance is in the MΩrange.
· *** The resistance drops as the intensity of illumination increases (kΩrange).
In contrast to the selenium photocell of the RAR... detectors, glowing firebrick in the combustion chamber can be detected.
