Journal of Physics: Theories and Applications
Vol 5, No 2 (2021): Journal of Physics: Theories and Applications

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

Zuhdi Ismail (Pusrisbang SDM - Badan Standardisasi Nasional)
Renanta Hayu Kresiani (Directorate of SNSU – Badan Standardisasi Nasional)



Article Info

Publish Date
30 Sep 2021

Abstract

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.

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Journal Info

Abbrev

jphystheor-appl

Publisher

Subject

Education Materials Science & Nanotechnology Physics

Description

Journal of Physics: Theories and Applications (cited as J. Phys.: Theor. Appl.) is a peer-reviewed and open access journal, which is published twice a year by Physics Department, Sebelas Maret University. The journal is designed to serve researchers, developers, professionals, graduate students and ...