Chemistry: electrical and wave energy – Processes and products – Vacuum arc discharge coating
Patent
1980-05-27
1981-08-18
Kaplan, G. L.
Chemistry: electrical and wave energy
Processes and products
Vacuum arc discharge coating
G01N 2758
Patent
active
042844878
ABSTRACT:
Disclosed is an oxygen analyzer probe for use in situ in the flue gas stream of a furnace of the type having a housing, a solid electrolytic oxygen sensor adjacent to one end of the housing and first and second noble metal leads connected to the sensor. The present invention includes a terminal block within the housing to which the noble metal leads are releasably connected. At the terminal block intermediate leads of a metal dissimilar to the noble metal lead are connected thereto. Since all connections between dissimilar metals are made at the terminal block and since all such connections are at approximately the same temperature, no unbalanced thermocouples are introduced into the electrical path from the sensor. In one embodiment, the intermediate leads are comprised of a nickel alloy and have sufficient rigidity to form the prongs of a male plug connector which prongs extend from the rear end of the housing. A female plug connector mates with the male connector for easy disassembly of the probe during maintenance thereof.
REFERENCES:
patent: 3546086 (1970-12-01), Sayles
patent: 3630874 (1971-12-01), Olette et al.
patent: 3657094 (1972-04-01), Hans et al.
patent: 3758397 (1973-09-01), Rittiger et al.
patent: 3784459 (1974-01-01), Jackson
patent: 3883408 (1975-05-01), Kim et al.
patent: 3928161 (1975-12-01), McIntyre et al.
Westinghouse Elec. Corp., Bulletin 106-101, Mar. 1977.
Barnes Lyle K.
Barringer Richard C.
Kaplan G. L.
Milton Roy Company
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