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Fluke Digital Multimeter User Manual

Fluke Digital Multimeter
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©Fluke Calibration 2011 Basics Of Measurement Uncertainty for DMM Calibration 1
Applying Measurement Uncertainty To
Digital Multimeter Calibration
An introductory study of measurement
uncertainty and its application to digital
multimeter calibration
Teleconference:
US & Canada Toll Free Dial-In Number: 1-(866) 230-5936
International Dial-In Number:+1-281-913-1100
Conference Code: 1010759559
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Fluke Digital Multimeter Specifications

General IconGeneral
BrandFluke
ModelDigital Multimeter
CategoryMultimeter
LanguageEnglish

Summary

Applying Measurement Uncertainty to Digital Multimeter Calibration

Welcome and Seminar Overview

Introduces the seminar, its objectives, and benefits, setting the stage for the topic.

Web Seminar Etiquette

Provides guidelines for participants to ensure a smooth and productive web seminar experience.

Fundamentals of Measurement Uncertainty and Importance

Why Measurement Uncertainty is Important

Discusses the inability to measure true values and the importance of knowing measurement quality.

Historical Context and ISO 17025 Requirements

Contrasts historical accuracy analysis with modern, documented uncertainty calculations and ISO 17025 standards.

Sources of Uncertainty and Calibration Certificates

Lists common sources of uncertainty and explains their inclusion in calibration certificates.

Example of an Accredited Calibration Certificate

Displays an accredited calibration certificate, highlighting uncertainty statements.

Summary of Uncertainty Importance

Emphasizes that uncertainty defines quality and is crucial for deciding if tolerances are met.

Obtaining Measurement Uncertainty: Methods and Standards

Standardized Calculation Methods (GUM)

Explains the lack of standardization initially and the adoption of the GUM in 1993.

Recommended Resources for GUMs

Recommends specific guides like ANSI/NCSL Z540.2 and NIST TN 1297 for expressing uncertainty.

Measurement Uncertainty in DMM Calibration: A Detailed Example

DMM Verification Concepts and Uncertainty Types

Introduces DMM verification, sources of doubt, and defines Type A and Type B uncertainties.

Calculating Type A Uncertainty (u1)

Explains Type A uncertainty determination via statistical analysis, calculating standard deviation of the mean.

Calculating Type B Uncertainties (u2 and u3)

Details how to estimate u2 (calibrator inaccuracy) and u3 (UUT limits) from specifications.

Combining and Expanding Uncertainties

Shows the calculation of uc (combined uncertainty) and Um (expanded uncertainty) using the GUM.

Final Measurement Results and Uncertainty Budget

Presents the final measurement value with expanded uncertainty and the overall uncertainty budget.

Impact of Sample Size and Automation

Effect of Sample Size on Uncertainty

Analyzes how increasing measurements affects uncertainty and coverage factor, discussing practical value.

Simplifying and Automating Uncertainty Calculations

Explores options for automating calculations, including MET/CAL, and its benefits.

Conclusion, Resources, and Training

Conclusion and Seminar Review

Summarizes key topics including uncertainty importance, calculation, examples, and automation benefits.

Further Information and Resources

Provides links and references for GUMs, publications, and training courses.

Fluke Calibration Web Seminar Series

Seminar Series Information

Provides information on how to register and lists seminar topics.

Calibration and Metrology Training

Training Course Offerings

Details instructor-led classroom, web-based, and self-paced training courses.

Thank You

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