HYDROSTATIC WEIGHING APPARATUS FOR THE DENSITY DETERMINATION OF LARGE WEIGHTS

Y. J. Lee, W. G. Lee, K. H. Chang, M. A. Mohammed

Abstract

This paper presents a hydrostatic weighing apparatus (HWA) for the density determination of weights in the range of 2 kg to 10 kg including 1 kg. The measurement is based on Archimedes’ principle by using 1 kg sphere as a solid density standard to determine the density of the reference liquid. The HWA consists of a precision balance, a immersion pan, reference weights, a weight carrier, a sample carrier, a reference liquid, a thermostat, and a controller for stepping motors. The reference weights with capacity of 1 kg, 2 kg, 2 kg, 5, kg, and 10 kg are designed and installed to be weighed at the bottom of balance. The measurement uncertainty of density of weights are evaluated as preliminary test of newly designed and fabricated equipment.

Keywords

hydrostatic weighing, density of weight, reference liquid, reference weight

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IMEKO-WC-2012-TC3-O38.pdf

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IMEKO TC

TC3 - Measurement of Force, Mass, Torque, and Gravity

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