| 摘要 |
933,137. Thermocouples. AMERICAN RADIATOR & STANDARD SANITARY CORPORATION. April 11, 1962 [April 18, 1961], No. 13986/62. Class 37. A thermocouple intended for use up to very high temperatures, e.g. 4000‹ F., comprises an inner element 1 of iridium coated with an insulating sheath 3 of a metal oxide, e.g. flame sprayed beryllium or thorium oxide, and a coaxial outer element 4 of silicon carbide which may be sintered on to the coating 3. The outer element is provided with a coating 5 of a getter material, e.g. flame sprayed tantalum or rhenium, and an outer layer 6 of a metal oxide, e.g. beryllium or thorium oxide. |
