| 摘要 |
A thermocouple cable has a positive and a negative thermoelement conforming to the standard emf-temperature specification for type K thermocouples, a sheath through which the thermocouples extend, and compacted ceramic insulating the thermoelements from each other and from the sheath. The sheath comprises an oxidation-resistant alloy having a thermal coefficient substantially the same as that of the negative thermoelement and a melting point in excess of 1300.degree.C; the sheath preferably being formed from a nickel based alloy, such as a nickel-chromium alloy. The positive and negative thermoelements preferably also comprise nickel-based alloys.
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