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Homemeasurement uncertainty

measurement uncertainty

Articles

How to Determine Resolution Uncertainty

February 23, 2017 Office
by Richard Hogan Resolution uncertainty is the uncertainty in measurement contributed by resolution of measurement equipment. Resolution Uncertainty is a factor that contributes to uncertainty in measurement. Its influence should be considered in every uncertainty […]
Automation Corner

Uncertainty Calculations That Excel!

December 2, 2016 Michael Schwartz
The other day I read an article titled “Five easy steps for adding measurement uncertainties to your calibration data.”  It described a very easy process of copying cells from one Microsoft Excel® file to another, […]
Articles

On the Welch-Satterthwaite Formula for Uncertainty Estimation: A Paradox and Its Resolution

November 22, 2016 Office
by Hening Huang The Welch-Satterthwaite (WS) formula estimates an “effective degrees of freedom” of an approximate Chi-square distribution formed from a combination of several sample variances of independent normal populations.   The effective degrees of freedom […]
Articles

Dimensional Measurement Uncertainty from Data, Part 2: Uncertainty R&R

August 16, 2016 Office
by Ted Doiron While check standards will eventually give the most accurate uncertainty for a calibration procedure, the time and expense can be discouraging. Another common method, standard Gage Repeatability and Reproducibility study does not […]
Articles

Probability Distributions and Divisors for Estimating Measurement Uncertainty

February 19, 2016 Office
by Richard Hogan Probability distributions are a part of measurement uncertainty analysis that people continually struggle with. Today, my goal is to help you learn more about probability distributions without having to grab a statistics […]
Articles

Dimensional Measurement Uncertainty from Data, Part 1: Check Standards

September 7, 2015 Office
by Ted Doiron Uncertainty has proven difficult to implement in calibrations labs. The subject has advanced mathematics and statistics that are often needed for scientific research, but are seldom needed to develop uncertainty budgets for […]
Articles

Treatment of Conditional Measurement Bias in Measuring Instruments

March 5, 2015 Office
by Hugo Gasca, Luis Omar Becerra, Victor Serrano, & Luis Manuel Peña Calibration information of experimental instruments often is used for correcting measurements. In this work we present examples of analysis of historic data from […]
Articles

Uncertainty Estimation Based on Repeated Observations of a Population of Instruments

May 20, 2014 Office
by Jonathon Harben This paper explores the similarities and differences between a measurement uncertainty as described in the GUM and a manufacturer’s specification when the history of compliance testing results is taken into consideration. It […]

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  • Beyond 4:1: What Calibration Ratios Were Meant to Do
  • Metrology for Newbs: Entering the Community, Not Just the Career
  • Resistance Decade Boxes – Where and How They are Used
  • Digitalizing the Bench: Why the Future of Metrology is Model-Driven
  • MSL Uncertainty Calculator
  • Druck Launches UPS4E-IS, the World’s Only Intrinsically Safe Pocket-Size Loop Calibrator
  • Metrology and Quality Through Education
  • Renishaw to showcase robot efficiency solutions and advanced gauging systems at Automate 2026
business calibration training digitalization dimensional Education electrical flow force Force & Torque freeware general industry standards ISO/IEC 17025 mass & weight measurement uncertainty Metrology 101 national metrology institutes news optical photometry pressure pressure & flow RF & Microwave software temperature
  • Office: A reader noticed the tolerances were not correct. Lower and upper limits in the table of the article have now…
  • Office: Thank you Kent! ~Sita
  • marlett-NSTec: In the article “Learning to Apply Metrology Principles to the Measurement of X-ray Intensities in the 500 eV to 110…
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