Patent ID: 11959811
Assignee: SSAB ENTERPRISES, LLC
Field: Measurement (Instruments)
Classification: CPC G  C  F  H | IPC C  F  G  H

Claim 0:
1. A temperature sensor comprising:
a sapphire optical fiber structured to produce a thermal emission representative of a molten steel into which the temperature sensor is inserted;
a nanoporous cladding layer covering at least a portion of the sapphire optical fiber;
a refractory housing covering at least a portion of the nanoporous cladding layer;
an air gap fully-circumferentially around the sapphire optical fiber, the air gap separating the sapphire optical fiber from the refractory housing; and
a spectrometer coupled to the sapphire optical fiber and configured to receive the thermal emission and to generate, in response, a radiation spectrum indicative of a temperature of the molten steel.