Designed to detect the presence of a flame or fire.

Typically using infrared (IR) or ultraviolet (UV) sensing technology.



Infrared (IR) Flame Sensor

  • Sensing element typically consists of a material sensitive to infrared radiation
  • Material could be a photodiode, phototransistor, or some other type of photoelectric cell
  • When a flame is present, it emits infrared radiation as part of the combustion process
  • IR-sensitive element in the sensor detects these specific wavelengths of infrared light
  • To ensure accurate flame detection, the sensor includes filters that help eliminate interference from ambient light sources