Optoelectronic weld travel speed sensor

摘要: The sensor of the present invention is adapted for use on electrode holder a manual arc welding apparatus. comprises first optical fiber having receiving end disposed in zone adjacent to weld puddle produced by welder so as receive radiation indicative temperature that zone, and second rearward zone. Each transmits received respective photosensor, which produces an analog electrical signal accordance with level radiation. These two signals are processed compared continuously produce output travel speed bead