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BS 7118-2:1989 - Measurement of fluid flow: assessment of uncertainty in the calibration and use of flow measurement devices - Non-linear calibration relationships

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This standard outlines methods for: Fitting Polynomial Curves: Utilizing the least-squares criterion to fit quadratic, cubic, or higher-degree polynomial expressions to non-linear calibration data, considering only polynomials with integer powers. Uncertainty Assessment: Evaluating the uncertainty associated with the resulting calibration curve to ensure accurate flow measurements. Use of Computational Tools: Assuming the use of computer software for calculations due to the complexity of non-linear calibrations. A FORTRAN program is provided in Annex C as an example tool for performing these assessments. Practical Examples: Including examples in Annex D to demonstrate the application of the described methods. Limitations: Advising against extrapolating calibration curves beyond the range of the original data, as this can lead to significant inaccuracies.
Contributor(s):
NAAR - Data Entry Person
Primary Item Type:
British Standard
Identifiers:
ICS 17.120.01 Measurement of fluid flow in general
ISBN 0580173828
Language:
English
Subject Keywords:
Polynomials; Flow measurement; Regression analysis; Curve fitting; Calibration; Flowmeters; Computer applications; Statistical methods of analysis; Measurement characteristics; Accuracy; Estimation; Error analysis
First presented to the public:
5/14/2025
Original Publication Date:
9/29/1989
Previously Published By:
British Standards Institution
Place Of Publication:
London, United Kingdom
Citation:
Extents:
Number of Pages - 24
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2022-04-27 10:26:48.562
Submitter:
Nurul Aini Abdul Rahman

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