Thermal sensor

Thermal measuring and testing – Temperature measurement – Combined with diverse art device

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Details

374208, G01K 108

Patent

active

056604734

ABSTRACT:
The present invention concerns a thermal sensor designed to house two thermistors in a metallic case to detect temperatures of a cooling water of engines.
The thermal sensor is composed of a metallic case in a tip portion of which the first thermistor is inserted thermally insulated from the second thermistor provided in a portion other than the tip portion thereof.
A plurality of uneven portions are provided on the outer surface of the tip portion of the metallic case to effectively radiate the heal generated by the second thermistor and substantially reduce a thermal interference against the first thermistor in the metallic case to give a sensitive response to a change in the temperature of the cooling water.

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