Thermocouple probe

Details Thermocouple probe Thermocouple probe

H - Electricity

01

L

356/96

H01L 35/02 (2006.01) G01K 7/06 (2006.01)

Patent

CA 1085967

ABSTRACT OF THE DISCLOSURE The present invention provides a thermocouple probe comprising: a tube member having a closed end and an open end and made of a nickel-based alloy containing from 5 to 25% by weight chromium and one or more of: (a) rare earth element in an amount not exceeding 1% by weight; (b) aluminium in an amount not exceeding 5% by weight; and (c) one or more of the elements silicon, zirconium, titanium and niobium, provided that each element does not exceed 1% by weight; the balance being nickel; a wire member disposed in and axially extending through said tube member and having one end welded to an inner wall of said closed end of said tube member, said wire member being made of a nickel-based alloy containing one or more of: (d) aluminium in an amount not exceeding 7% by weight; (e) silicon in an amount not exceeding 7% by weight, provided that the sum of aluminium and silicon does not exceed 10% by weight; (f) rare earth element in an amount not exceeding 1% by weight; and (g) one or more of the elements carbon, cobalt, manganese and iron, provided that the sum of these elements does not exceed 1% by weight; the balance being nickel; and an electrically insulating material filling said tube member so as to support said wire member substantially immovably in said tube member. The thermocouple has a good responsiveness and high durability in use.

292514

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