Correction of Air Buoyancy on E0-74 Mass Measurement with Pt-Ir K-112 Standard

Zuhdi Ismail, Renanta Hayu Kresiani


Determination of the mass value of E0 no 74 by calibrating it using the Pt-Ir standard has high complexity. This is caused by a significant difference in the density of standards. In this study, the E0 no 74 made of stainless steel has a density of 8.051.130 kg.m−3 calibrated by a mass standard of Pt-Ir which has a density of 21.552.940 kg.m−3. By Archimedes' law, the buoyant force generated by the air due to this density difference is huge. Therefore, the correction of air buoyancy is very important. The air buoyancy correction value is obtained by determining the air density using the CIPM-2007 formula. The correction that arises due to air buoyancy while weighing in the air is -0.00115 g and is greater at higher density. The implication of buoyancy correction is identified by analyzing the equivalence of the measurement result using a reference value from the calibration certificate issued by BIPM. The measurement result is equivalent if -1<En<1. The  value for the corrected mass is -0.078.


measurement; mass; density; buoyancy correction; CIPM-2007

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Davidson, S. (2000). Air Density Measurement for Mass Calibration. XVI IMEKO World Congress.

Davidson, Stuart. (2010). Determination of the effect of transfer between vacuum and air on mass standards of platinum-iridium and stainless steel. Metrologia, 47(4), 487–497.

Davis, R. S., Barat, P., dan Stock, M. (2016). A brief history of the unit of mass: Continuity of successive definitions of the kilogram. Metrologia, 53(5), A12–A18.

Harris, G. L. (2018). Selected laboratory and measurement practices and procedures to support basic mass calibrations. 47–66.

Hayu, R., dan Ismail, Z. (2018). Statistical process control to monitor the impacts of extraordinary calibrations result on the mass dissemination. Journal of Physics: Conference Series, 1065(4), 2–6.

Ismail, Z., dan Hayu, R. (2016). Pengaruh Kondisi Lingkungan Terhadap Perhitungan Massa Konvensional di Lab Massa Puslit Metrologi-LIPI. 11th Annual Meeting on Testing and Quality.

ISO/IEC 17043. (2010). Conformity assessment — General requirements for proficiency testing.

Jabbour, Z. J., dan Yaniv, S. L. (2001). The kilogram and measurements of mass and force. Journal of Research of the National Institute of Standards and Technology, 106(1), 25–46.

Meteolabor AG. (2004). Operating instructions and technical description KLIMET A30. November, 1–17.

Mettler Toledo. (2019). OIML and ASTM Weights - Expertly Manufactured Weights for Reliable Testing Applications.

OIML-R111. (2004). International Recommendation OIML R 111-1 Edition 2004 (E).

Picard, A., Davis, R. S., Gläser, M., dan Fujii, K. (2008). Revised formula for the density of moist air (CIPM-2007). Metrologia, 45(2), 149–155.

Troemner. (2016). Weight Catalog.

Wang, X. L., Wang, J., Zhong, R. L., Zhang, Y., Cai, C. Q., Yao, H., dan Ding, J. A. (2010). Research on air density measurement for measuring weights. 21st Conference on Measurement of Force, Mass and Torque Together with HARDMEKO 2010 and 2nd Meeting on Vibration Measurement, IMEKO TC3, TC5 and TC22 Conferences, 1, 277–284.

Wieser, M. E. (2006). Atomic weights of the elements 2005 (IUPAC Technical Report). Pure and Applied Chemistry, 78(11), 2051–2066.


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