A flame sensor is a safety device used in industrial burners to monitor whether a flame is present during burner operation. It confirms successful ignition and ensures that combustion continues safely.
Flame sensors work by detecting light, ultraviolet radiation, or ionization signals produced by the burner flame. The sensor communicates with the burner controller to maintain safe operation.
If the flame is not detected or extinguishes unexpectedly, the burner control system shuts off the fuel supply. This safety function prevents unburned fuel buildup and reduces the risk of hazardous conditions.