Brahma Phototransistor FT13/R 18209057

The Brahma FT13/R 18209057 is a flame sensor of the phototransistor type, designed for precise control of gas burner valves. It detects the presence of a flame by responding to visible or infrared radiation, converting the light into an electrical signal for the burner control. This model features a cable length of 1000 mm and durable insulation, suitable for applications where the sensor must have a direct line of sight to the flame.

When selecting a phototransistor flame sensor of this kind, key parameters to match include the spectral range (visible or specific infrared wavelength), response time, cable length, connector type, and mounting sleeve dimensions. The sensor must be positioned to see the flame directly, not through a dirty sight glass or at an extreme angle. Before ordering, compare these specifications with the original sensor to ensure electrical, optical, and mechanical compatibility.

Common failures of phototransistor flame sensors include a contaminated optical window, an aged cell with weakened output signal, or a broken sheath or cable. When such a failure occurs, the burner control may not receive a signal within the safety time, leading to a lockout. Check the sensor's optical window for dirt or damage, and verify the integrity of the cable and connections.