IJSEA Archive (Volume 7, Issue 8)
International Journal of Science and Engineering Applications (IJSEA) (Volume 7, Issue 8 August 2018)
A Versatile Automatic Weight Changer For Mass Comparators
Keywords: automatic, weight changer , Mass Comparators
This paper describes an automatic weight changer for changing weights on the pan of a mass comparator. The weight changer is easy to use, and is designed to be readily fitted to most common types of top-loading mass comparators and balances of maximum capacity 20 g to 200 g. The versatility of the weight changer is demonstrated by its use in improving the efficiency of routine mass calibration and by its use to compare weights in an evacuated chamber. In each instance the repeatability achieved is 20% or less of the resolution of the balance. The weight changer currently allows up to five weights (or groups of weights) to be automatically compared, but is easily modified to allow comparison of more weights.
S. Chen, B. Mulgrew, and P. M. Grant, “A clustering technique for digital communications channel equalization using radial basis function networks,” IEEE Trans. on Neural Networks, vol. 4, pp. 570-578, July 1993.
 J. U. Duncombe, “Infrared navigation—Part I: An assessment of feasibility,” IEEE Trans. Electron Devices, vol. ED-11, pp. 34-39, Jan. 1959.C. Y. Lin, M. Wu, J. A. Bloom, I. J. Cox, and M. Miller, “Rotation, scale, and translation resilient public watermarking for images,” IEEE Trans. Image Process., vol. 10, no. 5, pp. 767-782, May 2001.
 J. M. Cameron, M. C. Croarkin, and R. C. Raybold, Designs for the Calibration of Standards of Mass, NBS Technical Note 952, U.S. Government Printing Office, Washington D.C., 1977. 2. F. Kohlrausch, Praktische Physik, Band 1, Mary S. Rosenberg, New York, 1947
 C. M. Sutton and M. T. Clarkson, “A General Approach to Comparisons in the Presence of Drift,” Metrologia, Vol. 30, No. 5, pp. 487-493, 1993/94.
 Organisation Internationale de Métrologie Légale, Weights of classes E1, E2, F1, F2, M1, M2, M3, International Recommendation R 111, 1994.
 ISO/IEC/OIML/BIPM publication, Guide to the Expression of Uncertainty in Measurement, 1993.
 C. F. Dietrich, Uncertainty, Calibration and Probability, Adam Hilger, London, 1973.
 C. M. Sutton, “The Pressure Balance as an Absolute Pressure Standard,” Metrologia, Vol. 30, No. 6, pp. 591-594,1993/94.
title = "A Versatile Automatic Weight Changer For Mass Comparators ",
journal = "International Journal of Science and Engineering Applications (IJSEA)",
volume = "7",
number = "8",
pages = "177 - 180 ",
year = "2018",
author = " Kyi Kyi Swe, Kyaw Myat Moe , Zar Chi Thaung ",