| 摘要 |
The probe comprises an outer casing communicating through apertures with the atmosphere of a furnace and bearing a support part on which the measuring electrode, or anode, is wound. A tablet of solid electrolyte in contact with the anode can be easily and quickly replaced when the measuring face thereof has become contaminated by the furnace atmosphere. The reference electrode, or cathode, is formed by the soldered junction and one of the wires of a thermocouple, the two conductors of which are crumpled into a hollow in the reference face of the tablet, then pass through a conduit of insulating refractory material. Between the bottom of the casing and that of a tubular support accommodated therein there is a spring which has the effect of pressing the tablet against a washer via the supporting part, thus sealing the furnace atmosphere from a reference atmosphere. The reference atmosphere is maintained by a flow of air or oxygen injected into the conduit and sweeping the wires of the thermocouple, exiting again within the tubular support. |
