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4.3 Advanced Mass Measurements

Georgia Harris

Office of Weights and Measures, Technology Services

Carroll Croarkin

Statistical Engineering Division, ITL

A workshop on mass measurements was given at NIST in June, 1996, in support of the System for Inter-American Metrology (SIM) where NIST is the lead laboratory for mass measurements. The participants, who were already skilled in mass metrology, were chosen from laboratories in Central and South America which will act as pivot laboratories for teaching and implementing advanced techniques to other laboratories within their respective regions. The workshop is part of a series that is regularly given in the USA for state and industrial laboratories, and the statistical content is substantial. It covers: theory and solution of weighing designs, propagation of uncertainties through several series of weighing designs; check standards in mass weighings, error models, computation of components of variance from check standard measurements; statistical control of the measurement process using check standards; precision of the balances; and computation of final uncertainties.

The workshop will be given again at NIST in March, 1997 for metrologists from industry and state weights and measures laboratories.

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Date created: 7/20/2001
Last updated: 7/20/2001
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