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The Influence of Climate Conditions on Weighing Results

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Abstract.

The influence of atmospheric pressure, air temperature, and relative air humidity on weighing results was determined in a long-term experiment. Two magnesium and three aluminium cylinders were weighed in a room without air conditioning over a period of more than three months. The climate parameters were automatically registered every 10 minutes. The climate data allow to calculate the masses from the weighing values which are subject to air buoyancy. It is then possible to check the validity of the empirical Schwartz equation for the calculation of the air density. The match between theory and experimental results is excellent for the influence of pressure and temperature and is weaker for the influence of humidity. The influence of this latter parameter on weight values is rather low and may be corrupted by water adsorption effects on the surfaces. It was found that the climate parameters can be looked at as triangular distributions rather than the previously proposed rectangular ones for the calculation of the weighing uncertainty budget.

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Authors and Affiliations

  1. Kantonsschule Heerbrugg, Karl-Völker-Strasse 11, CH-9435, Heerbrugg, Switzerland

    Martin Pozivil & Walter Winiger

  2. EMPA St. Gallen, Materials Science and Technology, Lerchenfeldstrasse 5, CH-9014, St. Gallen, Switzerland

    Samuel Wunderli & Veronika R. Meyer

  3. Metas, Metrology and Accreditation Switzerland, Lindenweg 50, CH-3003, Bern-Wabern, Switzerland

    Samuel Wunderli

Authors
  1. Martin Pozivil
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  2. Walter Winiger
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  3. Samuel Wunderli
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  4. Veronika R. Meyer
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Corresponding author

Correspondence to Veronika R. Meyer.

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Pozivil, M., Winiger, W., Wunderli, S. et al. The Influence of Climate Conditions on Weighing Results. Microchim Acta 154, 55–63 (2006). https://doi.org/10.1007/s00604-005-0479-4

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  • DOI: https://doi.org/10.1007/s00604-005-0479-4

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