BS ISO 2714:2017
$167.15
Liquid hydrocarbons. Volumetric measurement by displacement meter – Volumetric measurement by displacement meter systems other than dispensing pumps
| Published By | Publication Date | Number of Pages |
| BSI | 2017 | 44 |
This document describes and discusses the characteristics of displacement flowmeters. Attention is given to the factors to be considered in the application of positive displacement meters to liquid metering. These include the properties and nature of the liquid to be metered, the correct installation and operation of the meter, environmental effects, and the wide choice of secondary and ancillary equipment. Aspects of meter proving and maintenance are also discussed.
This document is applicable to the metering of any appropriate liquid. Guidance is given on the use of positive displacement meters in the metering of two-component mixtures of the same phase such as water and oil.
It is not applicable to two-phase flow when gases or solids are present under metering conditions (i.e. two-phase flow). It can be applied to the many and varied liquids encountered in industry for liquid metering only. It is not restricted to hydrocarbons.
Guidance on the performance expected for fiscal/custody transfer applications for hydrocarbons is outlined.
This document is not applicable to cryogenic liquids such as liquefied natural gas (LNG) and refrigerated petroleum gas. It does not cover potable water and fuel dispenser applications.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 7 | Foreword |
| 8 | Introduction |
| 9 | 1 Scope 2 Normative references 3 Terms, definitions, symbols and abbreviated terms 3.1 Terms and definitions |
| 13 | 3.2 Symbols and abbreviated terms 4 Design and operation of positive displacement meters 4.1 Basic characteristics and mode of operation |
| 15 | 4.2 Reciprocating displacement types 4.3 Rotating displacement types |
| 16 | 4.4 Intermeshing screw spindle type |
| 17 | 4.5 Oscillating displacement types 4.6 Disc type meters 5 Performance aspects 5.1 General 5.2 Factors affecting meter performance 5.3 General performance characteristics |
| 19 | 5.4 Pressure drop and back pressure considerations 5.5 Flow profile 6 Liquid property effects 6.1 General 6.2 Effect of viscosity |
| 21 | 6.3 Effect of temperature 6.4 Effect of pressure |
| 22 | 6.5 Lubricity and liquid cleanliness 6.6 Two-phase flow and air elimination 6.7 Two-component operation 6.8 Pulsating and fluctuating flow |
| 23 | 7 System design 7.1 Design considerations |
| 24 | 7.2 Selection of displacement meter type |
| 25 | 7.3 Ancillary equipment 7.3.1 General 7.3.2 Mechanical accessories |
| 26 | 7.3.3 Pulse generators and secondary electronic instrumentation 7.4 Flow algorithms |
| 27 | 8 Installation aspects 8.1 General 8.2 Installation pipework |
| 29 | 8.3 Flow pulsation |
| 30 | 8.4 Electrical installation 8.5 Pulse security 9 Environmental considerations 9.1 General 9.2 Electrical interference |
| 31 | 9.3 Humidity 9.4 Safety 10 Calibration 10.1 Proving and verification 10.2 General considerations 10.3 Proving conditions |
| 32 | 10.4 Proving methods 10.5 Proving frequency |
| 33 | 11 Operation and maintenance 11.1 General 11.2 Initial start-up 11.3 Meter maintenance 11.4 System diagnostics and control charts |
| 35 | Annex A (informative) Specification of performance |
| 42 | Bibliography |
