| 摘要 |
PURPOSE:To improve mass-productivity by a method wherein a lead terminal is formed with a good conductor having about the same heat-expansion coefficient of that of a high-temperature sensor element and is adherently connected to the high-temperature sensor element through a heat-resistant insulator to allow the use in high-temperature and to prevent dispersion of temperature measurement characteristics. CONSTITUTION:Thermistor material for high temperature such as ceramic material of Al2O3-B4C system, etc., is used as a high-temperature sensor element 2. As a lead terminal material 1a, 1b, a good conductor ceramic material having about the same heat-expansion coefficient as that of a high-temperature sensor element 2 such as Al2O3-TiB2 system. To prepare this high-temperature sensor 10, first, conductor plates 11a, 11b constituting lead terminal members 1a, 1b are laminated and integratedly bonded, with an insulator plate 13 constituting a heat-resistant insulator 3 positioned between them. Then, the high-temperature sensor element 2 is arranged on the one end, and sealing is performed to form a member 4, and lead wires 5a, 5b are soldered to obtain a high-temperature sensor 1.
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