BS ISO 12242:2012
Current
The latest, up-to-date edition.
Measurement of fluid flow in closed conduits. Ultrasonic transit-time meters for liquid
Hardcopy , PDF
English
31-07-2012
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principles of measurement
5 Performance requirements
6 Uncertainty in measurement
7 Installation
8 Test and calibration
9 Performance testing
10 Meter characteristics
11 Operational practice
Annex A (normative) - Temperature and pressure correction
Annex B (informative) - Effect of a change of roughness
Annex C (informative) - Example of uncertainty calculations
Annex D (informative) - Documents
Bibliography
Describes requirements and recommendations for ultrasonic liquid flowmeters, which utilize the transit time of ultrasonic signals to measure the flow of single-phase homogenous liquids in closed conduits.
| Committee |
CPI/30/5
|
| DocumentType |
Standard
|
| Pages |
80
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
This International Standard specifies requirements and recommendations for ultrasonic liquid flowmeters, which utilize the transit time of ultrasonic signals to measure the flow of single-phase homogenous liquids in closed conduits.
There are no limits on the minimum or maximum sizes of the meter.
This International Standard specifies performance, calibration and output characteristics of ultrasonic meters (USMs) for liquid flow measurement and deals with installation conditions. It covers installation with and without a dedicated proving (calibration) system. It covers both in-line and clamp-on transducers (used in configurations in which the beam is non-refracted and in those in which it is refracted). Included are both meters incorporating meter bodies and meters with field-mounted transducers.
| Standards | Relationship |
| ISO 12242:2012 | Identical |
| ISO/IEC 17025:2005 | General requirements for the competence of testing and calibration laboratories |
| ISO 80000-4:2006 | Quantities and units Part 4: Mechanics |
| OIML D 11 : 2013 | GENERAL REQUIREMENTS FOR MEASURING INSTRUMENTS - ENVIRONMENTAL CONDITIONS |
| ISO 5168:2005 | Measurement of fluid flow — Procedures for the evaluation of uncertainties |
| ISO/IEC Guide 99:2007 | International vocabulary of metrology Basic and general concepts and associated terms (VIM) |
| ISO 5167-1:2003 | Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full Part 1: General principles and requirements |
| ISO/TR 7066-1:1997 | Assessment of uncertainty in calibration and use of flow measurement devices — Part 1: Linear calibration relationships |
| API MPM CH5.8 : 2011 | MANUAL OF PETROLEUM MEASUREMENT STANDARDS - CHAPTER 5.8: MEASUREMENT OF LIQUID HYDROCARBONS BY ULTRASONIC FLOW METERS |
| ISO 17089-1:2010 | Measurement of fluid flow in closed conduits - Ultrasonic meters for gas Part 1: Meters for custody transfer and allocation measurement |
| ISO 11631:1998 | Measurement of fluid flow Methods of specifying flowmeter performance |
| ISO/TR 7871:1997 | Cumulative sum charts Guidance on quality control and data analysis using CUSUM techniques |
| ISO 4006:1991 | Measurement of fluid flow in closed conduits — Vocabulary and symbols |
| ISO/IEC Guide 98-3:2008 | Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) |
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