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Magnetically Insensitive Precision Thermometer

IP.com Disclosure Number: IPCOM000050548D
Original Publication Date: 1982-Nov-01
Included in the Prior Art Database: 2005-Feb-10

Publishing Venue

IBM

Related People

Authors:
Hoechli, UT Van der Klink, JJ Rytz, D [+details]

Abstract

Precise measurements of the temperature below approx. 800K rest on the calibration of temperature-dependent resistences, like Pt or Ge:Li, by means of the international gas thermometer. These secondary standards, distributed by the National Bureau of Standards, are however strongly sensitive to an external magnetic field H, leading to an erroneous reading of several K in a field of 0.3 T.