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4.4 Advanced Mass Measurements

Carroll Croarkin

Statistical Engineering Division, ITL

Georgia Harris

Office of Weights and Measures, Technology Services

A 5-day workshop on mass measurements was given at NIST in March 1997 for industrial and state metrologists, weight manufacturers and balance manufacturers. Participants were required to have taken two lower level courses before registering for this workshop which, in large part, focuses on statistical methods for controlling mass measurement processes and assessing uncertainties of mass determinations. Attendees were introduced to concepts of: theory and solution of weighing designs; error analysis; components of variance; and procedures for controlling measurement processes. Specific applications to mass measurements included:weighing designs for common weight sets; propagation of uncertainties through several series of designs; computations of uncertainty from check standard measurements; control of balance precision; and computation of total uncertainties. The course materials were supplemented by interactive computerized workshops which strengthen skills in the areas of weighing designs and process control.

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