L'air Liquide,societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude

Henri Glen

Sébastien Goudalle

Michele Quattrone

An oxyacetylene type work apparatus including a first container containing acetylene; a first pressure gauge configured to measure the pressure in the first container, a first two-dimensional marking disposed on the first dial, a second container containing oxygen; a second pressure gauge configured to measure the pressure in the second container, a second two-dimensional marking disposed on the second dial, an image capturing device configured to produce images of the first pressure gauge and of the second pressure gauge; an electronic logic circuit configured to process said images of the first and second pressure gauges thereby determining the respective angular positions, and a sensor configured to measure the temperature of the first acetylene container.

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Grandchamp, France

Henri Glen