SETT FOR STYRNING AV HASTIGHETEN AV EN GASSKERNINGSOPERATION OCH GASSKERNINGSAPPARAT FOR GENOMFORANDE AV SETTET

摘要

A method and device for controlling a gas cutting operation comprising a photosensitive element provided at a location on the gas cutting device in alignment with the path of cutting oxygen and its ejection vent to accept light emanating from the oxidation reaction portion of the cutting flame. The photosensitive element produces an electric output voltage when the luminous output from the oxidization reaction at the gas cutting impinges onto the element. The output voltage varies according to the variation of the intensity of the luminous output. The gas cutting device is controlled in response to the electric output voltage of the photosensitive element to stop running or to stop the supply of gases according to a predetermined program.