T24: GWP: Good Weighing Practices A Science-based Approach to Balance and Scale Metrology – 1/2 Day

The modern understanding of weighing metrology has had to change!

The traditional approach of treating weighing in the same way as less nuanced disciplines of metrology has caused a mix of too much testing, inappropriate testing and often use tolerances that are too tight to be realistic for the given location/application. This results in a significant number of methods not actually achieving their metrological goals!

Authorities have recognized that the roll-off of the measurement uncertainty components of an electronic weighing device is very different than the uncertainty roll-off on mechanical balances and scales.

National and International Standards are being updated to reflect modern mass metrological science.

We will break down how measurement uncertainty exhibits itself across the capacity of an electronic balance or scale and cover how to correctly assess and assign a Measurement Uncertainty budget.

We will discuss modern, robust, risk-based approaches to the assesment and estimation of significant, contributing uncertainty components in order to build a thorough, scientifically-sound, risk-based program for bench or floor weighing instruments.

Time will be spent covering phenomena that affect the accuracy of weighing, to illustrate how easy it is to create poor weight data!  To contrast this, you will learn how to overcome these potential sources of error, and optimize a balance metrology and service regime. This course focuses on:

• User testing
• Balance location and set up
• Factors influencing Measurement Uncertainty
• Common problems, and how to overcome
• Factors influencing repeatability
• Service needs for balances and scales
• Increasing productivity from your weighing equipment