3. Weighing uncertainties
Reminder: 2 shows that the weight displayed is not the weight measured by the scale.
The measured weight is rounded according to the scale resolution.
The weight measured by the scale is not visible to the user. Figure 2 shows that, for any weight measured between 2.545 g and 2.555 g, the weight displayed will always be 2.55 g.
"2.545 g" and "2.555 g" are referred to as "threshold limits" where the displayed weight remains the same. The range of the thresholds is equal to the actual scale interval, d, of the scale.
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Weighing uncertainties
The physics behind weighing
Bibliography
Standards and norms
International Organization for Standardization (ISO)
- Quality management systems – Requirements - ISO 9001 - 2015
- Prescriptions générales concernant la compétence des laboratoires d'étalonnage et d'essai. - ISO/IEC 17025 - 2005
- Measurement management systems – Requirements for measuring processes...
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Decision of December 29, 2015 on good manufacturing practices (BO N° 2015/12 bis).
Order of March 14, 2000 on good laboratory practice (JO of March 23, 2000).
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