Measurement of fluid flow — Procedures for the evaluation of uncertainties

ISO 5168:2005 establishes general principles and describes procedures for evaluating the uncertainty of a fluid flow-rate or quantity. A step-by-step procedure for calculating uncertainty is given.

Mesure de débit des fluides — Procédures pour le calcul de l'incertitude

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Status
Published
Publication Date
14-Jun-2005
Current Stage
Ref Project

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ISO 5168:2005 - Measurement of fluid flow -- Procedures for the evaluation of uncertainties
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INTERNATIONAL ISO
STANDARD 5168
Second edition
2005-06-15


Measurement of fluid flow — Procedures
for the evaluation of uncertainties
Mesure de débit des fluides — Procédures pour le calcul de l'incertitude





Reference number
ISO 5168:2005(E)
©
ISO 2005

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ISO 5168:2005(E)
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©  ISO 2005
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ii © ISO 2005 – All rights reserved

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ISO 5168:2005(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 1
4 Symbols and abbreviated terms . 3
4.1 Symbols . 3
4.2 Subscripts . 7
5 Evaluation of the uncertainty in a measurement process. 8
6 Type A evaluations of uncertainty . 9
6.1 General considerations. 9
6.2 Calculation procedure. 9
7 Type B evaluation of uncertainties . 10
7.1 General considerations. 10
7.2 Calculation procedure. 10
7.3 Rectangular probability distribution. 10
7.4 Normal probability distribution . 11
7.5 Triangular probability distribution. 11
7.6 Bimodal probability distribution . 11
7.7 Assigning a probability distribution . 11
7.8 Asymmetric probability distributions.
...

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