Flame detector Kromschroder FDU 510W9T2/1O2-0K1

Flame detector Kromschroder FDU 510W9T2/1O2-0K1, catalogue article 624.247.001, manufacturer code 84368111. This article is a flame sensor, a component used in burner safety systems. Parts of this type confirm to the burner control that ignition has occurred and that the flame is present, enabling continued fuel supply. Without a valid flame signal within the safety time, the control initiates lockout. Flame detectors are selected by detection principle, spectral range, response time, and mounting method. For oil and industrial burners where the flame is luminous, UV or IR detectors are used. The sensor must have an unobstructed view of the flame. Cable length and connector type also vary between models; when replacing a unit of this class, verify that the existing wiring and mounting sleeve are compatible. Typical failure modes for such detectors include a contaminated viewing window, an aged cell producing a weakened signal, or a broken sheath. Regular inspection of the lens and signal strength helps prevent nuisance lockouts. In a burner system, the flame detector works directly with the burner control. It is wired into the flame-sensing circuit and must produce a signal within the required spectral range for the fuel being burned. When servicing a burner that uses a detector of this type, always check the sensor output with a suitable tester, clean the window if needed, and confirm that the sight tube is clear of debris.