Brahma 18209001 FC11/N black 620 mm photocell

Photocells of this type are used on oil and industrial burners where the flame is luminous and a direct line of sight is required. They detect ultraviolet or infrared radiation emitted by the flame and send a signal to the burner control to confirm that ignition has occurred. Selection of a photocell involves matching the detection principle (UV or IR) to the burner control input, the spectral range, response time, cable length and connector type, and the mounting sleeve or flange dimensions. Common failure modes include a contaminated or fogged window that blocks radiation, an aged sensing cell that produces a weakened or intermittent signal, or a damaged cable sheath that exposes the wires. This Brahma article is a model FC11/N photocell with a black body and a 620 mm cable length. It is listed under catalogue number 246.901.010 and manufacturer codes 18209001 and 4033.022. When replacing a photocell of this type, verify that the detector input on the burner control matches the sensor output and that the physical mounting fits the existing viewing port or bracket.