Measuring and testing – Gas content of a liquid or a solid – Of metal
Patent
1997-05-20
1999-04-13
Larkin, Daniel S.
Measuring and testing
Gas content of a liquid or a solid
Of metal
204422, 204424, 436 75, 436138, G01N 3320
Patent
active
058940820
ABSTRACT:
An apparatus for measuring oxygen within a molten substance comprises a compact oxygen probe unit constructed by assembling a tubular shell whose one end is closed, which is made of solid electrolyte and which is to be soaked into the molten substance to be measured, a metal cylinder which surrounds the outer periphery of the shell and which serves also as an outer electrode and a sheath thermocouple which is inserted to a reference pole provided within an inner face of the shell and which serves also as an inner electrode to a terminal box. The metal cylinder comprises a protecting cylinder portion which surrounds the outer periphery of the shell and an opening for exposing the closed end of the shell. Both element wires of the sheath thermocouple are connected to temperature measuring means via the terminal box. The inner electrode formed by one element wire of the thermocouple and the outer electrode formed by the metal cylinder are connected to electromotive force measuring means also via the terminal box.
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patent: 4906349 (1990-03-01), Beatrice et al.
patent: 5596134 (1997-01-01), Phillippi et al.
Ikawa Hisao
Mori Keiichi
Murata Tetsumi
Torii Toyohiko
Kawaso Electric Industrial Co., Inc.
Larkin Daniel S.
Safran David S.
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