Patent ID: 8210025
Filing Date: 2012-07-03
Classification: B23K,G01N,Y02A

Abstract:
1. An arrangement for measuring a protective gas used in an arc-welding process by analyzing the protective gas escaping from a gas nozzle of a torch, the measuring arrangement comprising: an external cleaning unit; a measuring device integrated into the external cleaning unit; and at least one sensor is arranged in the measuring device for protective-gas analysis, wherein the at least one sensor is positioned at a distance from the torch which substantially equals the distance between the torch and a workpiece in an actual welding process so that the escape and effect of the protective gas of an actual welding process can be simulated, and wherein the at least one sensor is for measuring at least one gas property of the protective gas and comprises an oxygen sensor connected to an evaluation unit and via the latter to a welding device so as to assess a state of a plurality of wearing parts of the torch and automatically detect a degree of contamination of the gas nozzle by measuring and evaluating an oxygen portion of the protective gas.