Temperature sensor and a method of manufacturing the same
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsHiroki Moriwake, Nobuharu Katsuki, Tsuyoshi Tanaka, Katsunori Matsubara, Takashi Tamai
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Abstract
In order to present a temperature sensor which works stable also in a high temperature condition showing only a small deviation in the resistance value of thermistor, the invented temperature sensor comprises a heat resisting cap (5) made of a metal, a thermistor (1) housed inside the heat resisting cap (5) and at least more than one lead wire (4) which is electrically connected with the thermistor (1) and is pulled out of said heat resisting cap (5), said heat resisting cap (5) being formed with an alloy containing Ni—Cr as the main ingredient.
Claims12
A method of manufacturing a temperature senor comprising the steps of:
- obtaining a thermistor by inserting a metal whose melting point is higher than sintering temperature into a composition comprised of a thermistor material and sintering the whole;
- connecting the thermistor with a tube having at least one lead wire via said lead wire;
- disposing a heat resisting cap made of an alloy containing Ni—Cr as the main ingredient to cover said thermistor;
- and
- coupling the heat resisting cap with said tube.
A method of manufacturing a temperature sensor comprising the steps of:
- obtaining a thermistor by inserting a metal whose melting point is higher than sintering temperature into a composition comprised of a thermistor material and sintering the whole;
- connecting the thermistor with a tube having at least one lead wire via said lead wire;
- and
- disposing a heat resisting cap made of an alloy containing Ni—Cr—Fe as the main ingredient to cover said thermistor.
Dependencies are inferred from the claim text.