Temperature sensor and temperature measuring device
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United States of America Patent
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Sep 27, 2022
Grant Date -
Nov 19, 2020
app pub date -
Jul 31, 2020
filing date -
Jan 31, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
A temperature sensor includes a pair of thermocouple wires, a temperature measuring junction formed by joining tip ends of the pair of thermocouple wires together, an outer tube having a tip end in which the temperature measuring junction is held, an insulator insulating the pair of thermocouple wires from the outer tube, and a glass seal filled in a base end of the outer tube. The pair of thermocouple wires disposed in the outer tube have surfaces where passive films are respectively formed due to the oxidization of the metallic materials on the surfaces of the pair of thermocouple wires.
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