Thermo-couple with linear drift for liquid steel
OwnerLaszlo Kortvelyessyinventor
Life of this patent
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Abstract
Continuous temperature measurement for liquid steel has in the past been made only with a thermocouple with exponential drift. With a diameter ratio of about 2 between metal and ceramic wells and with exceptionally thin electrical insulation, a lower, calculable linear drift can be achieved thus giving a substantially longer service life.
Claims6
Thermocouple comprising an outer metal protective tube (1), an inner ceramic protective tube (3), and a positive thermo wire and a negative thermo wire, said wires being insulated from one another ceramically, characterized in that the outer diameter (d) of the ceramic protective tube (3) and the inner (D) diameter of the metal protective tube (1) are related to one another in the following way:
- 1.5.ltoreq.D/d<3 wherein D is the inner diameter of the metal protective tube and d is the outer diameter of the ceramic protective tube.
Dependencies are inferred from the claim text.