I.S. CEN ISO/TS 25377:2007
Current
The latest, up-to-date edition.
HYDROMETRIC UNCERTAINTY GUIDANCE (HUG)
Hardcopy , PDF
English
01-01-2007
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 ISO/IEC Guide 98 (GUM) - Basic definitions and rules
5.1 General
5.2 The uncertainty of sets of measurements
5.3 Random and systematic effects
5.4 Uncertainty models - Probability distributions
5.5 Combining uncertainties - The law of propagation
5.6 Expressing results
6 Open channel flow - Velocity area methods
6.1 General
6.2 Mean velocity, bar{V}[x]
6.3 Velocity-area determination
6.4 Stationary determination of velocity
6.5 Moving determination of velocity
6.6 Velocity-area uncertainties
6.7 Integration uncertainties [u*(F[y]),u*(F[z])]
6.8 Perimeter flow uncertainties, u(Q[p])
7 Open channel flow - Critical depth methods
7.1 General
7.2 Head and geometry determination
7.3 Iterative calculation
7.4 Evaluating uncertainty
8 Dilution methods
8.1 General
8.2 Continuous feed
8.3 Transient mass
9 Hydrometric instrumentation
9.1 Performance specifications
9.2 Validity of uncertainty statements
9.3 Manufacturer's performance specifications
9.4 Performance guide for hydrometric equipment for
use in technical standard examples
10 Guide for the drafting of uncertainty clauses in hydrometric
standards
10.1 General
10.2 Equipment, methods and measurement systems
Annex A (informative) Introduction to hydrometric uncertainty
Annex B (informative) An introduction to Monte Carlo Simulation
(MCS)
Annex C (informative) Performance guide for hydrometric
equipment for use in technical standard
examples
Bibliography
Gives an understanding of the nature of measurement uncertainty and its significance in estimating the quality of a measurement or a determination in hydrometry.
DocumentType |
Standard
|
Pages |
63
|
PublisherName |
National Standards Authority of Ireland
|
Status |
Current
|
Standards | Relationship |
ISO/TS 25377:2007 | Identical |
CEN ISO/TS 25377:2007 | Identical |
ISO/IEC 17025:2005 | General requirements for the competence of testing and calibration laboratories |
ISO 748:2007 | Hydrometry Measurement of liquid flow in open channels using current-meters or floats |
ISO 5168:2005 | Measurement of fluid flow — Procedures for the evaluation of uncertainties |
ISO 6416:2017 | Hydrometry — Measurement of discharge by the ultrasonic transit time (time of flight) method |
ISO/IEC Guide 98:1993 | Guide to the expression of uncertainty in measurement (GUM) |
EN 45002:1989 | GENERAL CRITERIA FOR THE ASSESSMENT OF TESTING LABORATORIES |
EN 45011 : 1998 | GENERAL REQUIREMENTS FOR BODIES OPERATING PRODUCT CERTIFICATION SYSTEMS |
EN 45013 : 1989 | GENERAL CRITERIA FOR CERTIFICATION BODIES OPERATING CERTIFICATION OF PERSONNEL |
ISO 772:1996 | Hydrometric determinations — Vocabulary and symbols |
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.