Brahma Phototransistor FT11/R 18209017

The Brahma FT11/R 18209017 is a flame sensor that uses a phototransistor to detect the presence of a flame by sensing its light. It is designed for use in gas burner systems to ensure precise control of valves. This model features high heat resistance and durable insulation, making it suitable for demanding environments. The sensor must have a direct line of sight to the flame and is typically connected to a burner control system.

When selecting a replacement flame sensor of this type, ensure it matches the original mounting arrangement and that the sensor window is clean and free from soot or oil deposits. The spectral range, response time, cable length, connector type, and mounting sleeve must be compatible with the burner design. Contamination of the sensor window is a common cause of failure, so proper installation and maintenance are essential.

If the flame sensor fails, the burner control may not receive a signal during the start-up sequence, leading to a lockout and closure of fuel valves. Contamination of the sensor window or ageing of the photoelectric cell can weaken the signal, causing intermittent lockouts. Regular inspection and cleaning of the sensor window are recommended to prevent such issues.