Method, system and apparatus for measuring temperature with...

G - Physics – 01 – K

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G01K 7/13 (2006.01) G01K 7/12 (2006.01)

Patent

CA 2478280

A cold junction compensation system for a temperature measurement device having a processing circuit is disclosed. The cold junction compensation system includes a cold junction temperature sensor arranged in signal communication with the processing circuit, a thermal coupler in thermal communication with the cold junction temperature sensor, and first and second contacts each in thermal communication with the thermal coupler and in electrical isolation with each other, each contact arranged for signal communication with the processing circuit and arranged for signal communication with a hot junction temperature sensor. A signal from the hot junction temperature sensor is communicated to the processing circuit via the first and second contacts, the cold junction temperature sensor senses the cold junction temperature at the first and second contacts via the thermal coupler, and a signal representative of the cold junction temperature is communicated to the processing circuit for enabling a cold junction compensation calculation.

La présente divulgation porte sur un système de compensation de soudure froide pour un dispositif de mesure de température pourvu d'un circuit de traitement. Ce système de compensation comprend les éléments qui suivent : une sonde de température de soudure froide disposée en communication de signal avec le circuit de traitement; un coupleur thermique en communication thermique avec la sonde de température de soudure froide; et un premier et un second contacts, chacun en communication thermique avec le coupleur thermique et en isolés électriquement l'un de l'autre, chaque contact étant en communication de signal avec le circuit de traitement et en communication de signal avec une sonde de température de soudure chaude. Un signal, provenant de la sonde de température de soudure chaude, est transmis au circuit de traitement au moyen des premier et second contacts. La sonde de température de soudure froide capte la température de jonction froide aux premier et second contacts au moyen du coupleur thermique. Un signal, qui représente la température de jonction froide, est transmis au circuit de traitement pour permettre le calcul de compensation de soudure froide.

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