Stabilization of the Temperature of Resonator of an Acoustic Gas Thermometer

Osadchii, S. М.; Potapov, B. G.; Петухов, А. А.; Sokolov, N. A.; Dragunov, О. E.; Pilipenko, K. D.

doi:10.1007/s11018-018-1527-x

Cited by 1 publication

(1 citation statement)

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“…To realize accurate thermodynamic temperature measurements worldwide, temperature stability is a key aspect of state-of-the-art primary gas thermometry [6][7][8][9][10][11][12][13][14][15], in which there are some strong coupling effects between different physical quantities especially at low temperatures. For example, with the help of better temperature stability, the measurement of pressure and capacitance changes was improved in the new dielectric constant gas thermometry at Physikalisch-Technische Bundesanstalt in Germany [15].…”

Section: Nomenclaturementioning

confidence: 99%

Investigation of High-Stability Temperature Control in Primary Gas Thermometry

Zhang

Song

et al. 2022

J. Therm. Sci.

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We present a relationship between the temperature control and measurement stability limit and its temperature resolution, particularly for using rhodium-iron resistance thermometers and AC resistance bridges.Based on which, temperature control was investigated and demonstrated in primary gas thermometry at various working conditions. With optimized parameters, micro-kelvin level temperature control stability was realized in the temperature region from 5 K to 24.5 K. The temperature control stabilities are better than 8 K over 180 h with an integration time of 33.6 s in the concerned temperature range, closing to the limit that the sensors and the instruments can control and measure. These stabilities were improved about (44 ± 8) % at 24.5 K and (70 ± 7) % at 5 K comparing with our previous work (Chen et al., Cryogenics 2019 97 1-6).

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