TEMPERATURE SENSOR
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United States of America Patent
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Issued Date -
Feb 11, 2016
app pub date -
Aug 7, 2015
filing date -
Aug 8, 2014
priority date (Note) -
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Abstract
A temperature sensor includes a sheath member having an insulative holding member which contains an oxygen supplying substance and is formed in such a manner that the oxygen supplying substance is exposed when viewed from an opening on the distal end side of a sheath tube. Since the insulative holding member releases oxygen from the distal end side of the sheath member, a decrease in oxygen concentration around a thermistor element can be suppressed. Thus, it is possible to suppress a change in the characteristics of the thermistor element due to reduction action, and to suppress decrease in temperature detection accuracy. Since the oxygen supplying substance is contained in the insulative holding member, compared with a configuration where a pellet is disposed on the distal end side of the thermistor element, delay in heat conduction is less likely to occur, and a decrease in temperature detection response can be suppressed.
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