Patent ID: 8236234

Claim:
A container for molten metal comprising an outlet for outflow of the molten metal from the container and a temperature measuring device fixed in a wall of the container, wherein the temperature measuring device comprises a plug fixed in a wall of the container and having a first end and an opposed second end, an outer protective sheath having a closed end, an inner protective tube having a closed end, the inner protective tube being arranged within an interior of the outer protective sheath, and a thermocouple arranged within an interior of the inner protective tube, wherein the plug comprises a substantially refractory material and the outer protective sheath consists essentially of substantially refractory metal oxide and graphite, the outer protective sheath extending away from the first end of the plug and projecting into a recessed portion of the wall of the container, the closed end of the outer protective sheath being arranged in the recessed portion and the recessed portion being configured to receive flowing molten metal; and wherein a junction of the thermocouple is proximate to the closed end of the inner protective tube.