NEW MODULATED THERMO-COUPLE SENSOR

K. Yagita, K. Hino, J. Nakazoe

Abstract

This paper describes a new type temperature sensor using a modulated thermo-couple. The very low drift amplifier and the standard temperature cell used in the conventional thermo-couple sensor are not needed for the proposed sensor driven by modulating ac current. By the modulating current, both the Seebeck effect and the Pertier effect are occurred simultaneously. Therefore the output voltage by the Seebeck effect on the junction is proportional to an absolute temperature of the sensor. Especially, the method of the construction and the behaviors of the muitijunction of the sensor at low temperature are shown.

Keywords

thermo-couple, multi-junction, modulation

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IMEKO-WC-2000-TC12-P325.pdf

DOI

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IMEKO TC

TC12 - Temperature and Thermal Measurements

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