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

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

29-09-1989

Publisher

British Standards Institution

National foreword
Committees responsible
0. Introduction
1. Scope and field of application
2. References
3. Definitions
4. Symbols and abbreviations
5. Curve fitting
5.1 General
5.2 Computational methods
5.3 Selecting the optimum degree of fit
6. Uncertainty
Annexes
A. Regression methods
B. Orthogonal polynomial curve fitting
C. Computer program using orthogonal polynomials
D. Examples
E. Finite-difference method

Procedures for fitting a quadratic, cubic or higher degree polynomial expression to a non-linear set of calibration data using the least squares criterion and assessing the uncertainty associated with the resulting calibration curve.

This part of ISO 7066 describes the procedures for fitting a quadratic, cubic or higher degree polynomial expression to a non-linear²⁾ set of calibration data, using the least-squares criterion, and of assessing the uncertainty associated with the resulting calibration curve. It considers only the use of polynomials with powers which are integers.

Because it is generally not practicable to carry out this type of curve fitting and assessment of uncertainty without using a computer, it is assumed in this part of ISO 7066 that the user has access to one. In many cases it will be possible to use standard routines available on most computers; as an alternative the FORTRAN program listed in Annex C may be used.

Examples of the use of these methods are given in Annex D.

Extrapolation beyond the range of the data is not permitted.

Annex A, Annex B, Annex C, Annex D and Annex E do not form integral parts of this part of ISO 7066.

Committee	CPI/30
DevelopmentNote	Also numbered as ISO 7066-2 Supersedes 85/29857 DC (09/2005)
DocumentType	Standard
Pages	32
PublisherName	British Standards Institution
Status	Current

BS 7825-2:1996	Calibration of rubber and plastics test equipment Calibration procedures
BS EN 60041:1995	Field acceptance tests to determine the hydraulic performance of hydraulic turbines, storage pumps and pump-turbines
BS EN 29104:1993	Measurement of fluid flow in closed conduits. Methods of evaluating the performance of electromagnetic flow-meters for liquids
BS 3680-3B:1997	Measurement of liquid flow in open channels. Stream flow measurement Guide for the establishment and operation of a gauging station
EN 29104 : 1993	MEASUREMENT OF FLUID FLOW IN CLOSED CONDUITS - METHODS OF EVALUATING THE PERFORMANCE OF ELECTROMAGNETIC FLOW-METERS FOR LIQUIDS
BS 7118-1:1990	Measurement of fluid flow: assessment of uncertainty in the calibration and use of flow measurement devices Linear calibration relationships

ISO/TR 7066-1:1997	Assessment of uncertainty in calibration and use of flow measurement devices — Part 1: Linear calibration relationships
BS 5844:1980	Methods of measurement of fluid flow: estimation of uncertainty of a flow-rate measurement

View more information

£198.00

Excluding VAT

Product format

I agree to the DRM document license rules apply against the PDF selection made.

Please confirm that you agree to the document license rules for this document.

I agree to the document license rules .

Please confirm that you agree to the document license rules for this document.

Access your standards online with a subscription

Features

Simple online access to standards, technical information and regulations.
Critical updates of standards and customisable alerts and notifications.
Multi-user online standards collection: secure, flexible and cost effective.

Learn more on subscription solutions

Get in touch with us

Log into your Account

BS 7118-2:1989

Current

Table of Contents

Abstract

Scope

General Product Information

Standards Referenced By This Book

Standards Referencing This Book

Category

Subcategory

Access your standards online with a subscription