Abstract
Applying a cryogenic current comparator bridge to resistance thermometry, the temperature distributions along the thermometer wells of two triple point cells of water are precisely measured using a standard platinum resistance thermometer with low measuring currents of about 0.1 mA. The average hydrostatic pressure coefficient of the two cells calculated from the temperature distributions is -0.854(38) mK/m. This value agrees well with the reported value of -0.856 mK/m, but is not consistent with the recommended value of the International Temperature Scale of 1990, -0.73 mK/m.
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