1、September 2014 Translation by DIN-Sprachendienst.English price group 21No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).
2、ICS 75.060; 75.180.30!%:S“2235848www.din.deDDIN EN ISO 15970Natural gas Measurement of properties Volumetric properties: density, pressure, temperature and compressionfactor (ISO 15970:2008);English version EN ISO 15970:2014,English translation of DIN EN ISO 15970:2014-09Erdgas Messung der Eigenscha
3、ften Volumetrische Eigenschaften: Dichte, Druck, Temperatur und Kompressibilittsfaktor(ISO 15970:2008);Englische Fassung EN ISO 15970:2014,Englische bersetzung von DIN EN ISO 15970:2014-09Gaz naturel Mesurage des caractristiques Caractristiques volumtriques: masse volumique, pression, temprature et
4、facteur decompression (ISO 15970:2008);Version anglaise EN ISO 15970:2014,Traduction anglaise de DIN EN ISO 15970:2014-09www.beuth.deDocument comprises 56 pagesIn case of doubt, the German-language original shall be considered authoritative.08.14 DIN EN ISO 15970:2014-09 2 A comma is used as the dec
5、imal marker. National foreword The text of ISO 15970:2008 has been prepared by Technical Committee ISO/TC 193 “Natural gas” (Secretariat: NEN, Netherlands) and has been taken over by Technical Committee CEN/SS N21 “Gaseous fuels and combustible gas” as EN ISO 15970:2014. The responsible German body
6、involved in its preparation was the Normenausschuss Gastechnik (DIN Standards Committee Gas Technology), Working Committee NA 032-03-05 AA Gasfrmige Brennstoffe. There is no previous edition of this standard. The text of ISO 15970:2008 has been adopted without any modification. The national standard
7、 DIN 1871 deals with the laboratory analysis of fuel gases, whereas DIN EN ISO 15970 relates to the field measurement and determination of volumetric properties of natural gas. Thus, DIN EN ISO 15970 does not replace DIN 1871, but serves as a supplement for applications outside the laboratory. DIN E
8、N ISO 15970:2014-09 3 National Annex NA (informative) Bibliography DIN EN ISO 5167-1, Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full Part 1: General principles and requirements DIN EN ISO 6976, Natural gas Calculation of c
9、alorific values, density, relative density and Wobbe index from composition DIN EN ISO 10715, Natural gas Sampling guidelines DIN EN ISO 12213-1, Natural gas Calculation of compression factor Part 1: Introduction and guidelines DIN EN ISO 12213-2, Natural gas Calculation of compression factor Part 2
10、: Calculation using molar-composition analysis DIN EN ISO 12213-3, Natural gas Calculation of compression factor Part 3: Calculation using physical properties DIN EN ISO 14532, Natural gas Vocabulary E DIN EN 1776:2014-01, Gas infrastructure Gas measuring systems Functional requirements DIN EN 60079
11、-0, Explosive atmospheres Part 0: Equipment General requirements DIN EN 60079-1, Explosive atmospheres Part 1: Equipment protection by flameproof enclosures “d” DIN EN 60079-11, Explosive atmospheres Part 11: Equipment protection by intrinsic safety “i” DIN EN 60079-14, Explosive atmospheres Part 14
12、: Electrical installations design, selection and erection DIN EN 60079-15, Explosive atmospheres Part 15: Equipment protection by type of protection “n” DIN EN 60751, Industrial platinum resistance thermometers and platinum temperature sensors DIN EN 60770-1, Transmitters for use in industrial-proce
13、ss control systems Part 1: Methods for performance evaluation DIN EN 60770-2, Transmitters for use in industrial-process control systems Part 2: Methods for inspection and routine testing DIN IEC 60381-1, Analogue signals for process control systems Part 1: Direct current signals DIN IEC 60381-2, An
14、alogue signals for process control systems Part 2: Direct voltage signals BS 1042-1.4: Measurement of fluid flow in closed conduits. Pressure differential devices. Guide to the use of devices specified in sections 1.1 and 1.2 (withdrawn) see: DIN EN ISO 5167-1, Measurement of fluid flow by means of
15、pressure differential devices Part 1: Orifice plates, nozzles and Venturi tubes inserted in circular cross-section conduits running full DIN 1871, Gaseous fuels and other gases Density and other volumetric quantities DIN EN ISO 15970:2014-09 4 ISO 4006:1991, Measurement of fluid flow in closed condu
16、its Vocabulary and symbols, see: DIN EN 24006:1993-08, Measurement of fluid flow in closed conduits Vocabulary and symbols EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 15970 March 2014 ICS 75.060; 75.180.30 English Version Natural gas - Measurement of properties - Volumetric properties:
17、density, pressure, temperature and compression factor(ISO 15970:2008) Gaz naturel - Mesurage des caractristiques - Caractristiques volumtriques: masse volumique, pression, temprature et facteur de compression(ISO 15970:2008) Erdgas - Messung der Eigenschaften - Volumetrische Eigenschaften: Dichte, D
18、ruck, Temperatur und Kompressibilittsfaktor (ISO 15970:2008) This European Standard was approved by CEN on 16 February 2014. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard wi
19、thout any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any othe
20、r language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic,
21、Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMI
22、TTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 15970:2014 EContents P
23、age Foreword. 4 Introduction 5 1 Scope . 5 2 Normative references . 5 3 Terms and definitions. 7 3.1 Terms and definitions for density at reference conditions 7 3.2 Terms and definitions for density at operating conditions 7 3.3 Terms and definitions for pressure 8 3.4 Terms and definitions for temp
24、erature. 9 3.5 Terms and definitions for compression factor 9 4 Symbols and units 9 4.1 Symbols and subscripts for density at reference conditions 9 4.2 Symbols and subscripts for density at operating conditions 10 4.3 Symbols and subscripts for compression factor 10 5 Density at reference condition
25、s 11 5.1 Principle of measurement 11 5.2 Performance assessment and acceptance tests. 15 5.3 Sampling and installation guidelines . 16 5.4 Calibration . 16 5.5 Verification 16 5.6 Maintenance 17 5.7 Quality control. 17 6 Density at operating conditions 17 6.1 Principle of measurement 17 6.2 Performa
26、nce assessment and acceptance tests. 18 6.3 Sampling and installation guidelines . 21 6.4 Calibration . 25 6.5 Verification 25 6.6 Maintenance 26 6.7 Quality control. 26 7 Pressure. 27 7.1 Principle of measurement 27 7.2 Performance assessment and acceptance tests. 29 7.3 Sampling and installation g
27、uidelines . 29 7.4 Calibration . 32 7.5 Verification 33 7.6 Maintenance 34 7.7 Quality control. 34 8 Temperature 34 8.1 Principle of measurement 34 8.2 Performance assessment and acceptance tests. 35 8.3 Installation guidelines 36 8.4 Calibration . 38 8.5 Verification 39 8.6 Maintenance 39 8.7 Quali
28、ty control. 39 9 Compression factor 39 DIN EN ISO 15970:2014-09 EN ISO 15970:2014 (E) 2 9.1 Principle of measurement 39 9.2 Working principle 40 9.3 Performance assessment and acceptance tests. 43 9.4 Sampling and installation guidelines 43 9.5 Calibration 44 9.6 Verification. 45 9.7 Maintenance. 45
29、 9.8 Quality control. 45 Annex A (informative) Guidance for instrument selection, instrument test and operational procedures. 46 Annex B (informative) Instrument documentation 50 Bibliography . 52 DIN EN ISO 15970:2014-09 EN ISO 15970:2014 (E) 3 Foreword The text of ISO 15970:2008 has been prepared
30、by Technical Committee ISO/TC 193 “Natural gas” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 15970:2014. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the late
31、st by September 2014, and conflicting national standards shall be withdrawn at the latest by September 2014. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or a
32、ll such patent rights. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of
33、 Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 15970:2008 has been approved
34、by CEN as EN ISO 15970:2014 without any modification. DIN EN ISO 15970:2014-09 EN ISO 15970:2014 (E) 4 Introduction The transmission of natural gas can involve passage across national boundaries; at border stations and elsewhere, knowledge of the physicochemical properties of the fluid is of great o
35、perational and economic importance. The energy flow and properties of the gas are required at several stages of the overall production and custody transfer process: production, blending, transmission, metering, distribution and supply. International standardization of the performance specifications
36、for various types of measuring instruments can facilitate comparison of, and increase confidence in, measurement results for contracting partners. In many cases, it is possible to calculate the properties of natural gas with sufficient accuracy, given the composition. However, it is often also possi
37、ble to measure the property using techniques that do not require a compositional analysis for their implementation. This International Standard considers only those methods for determining physical properties of natural gas that do not rely upon a detailed component analysis of the gas. Such measure
38、ments consider the “whole” sample of the gas. This International Standard defines performance characteristics necessary to specify instrumentation for measurement of some natural gas properties. It provides guidelines for the installation, traceable calibration, performance, operation, maintenance a
39、nd acceptance testing of these measurement instruments. The principle of measurement of various properties included in this International Standard is typical for a number of applications. It is required that the calibration of the instruments dealt with in this International Standard be traceable to
40、 national standards or International Standards. It is required that the measuring instruments, including their installation and the devices used for field calibration, verification and maintenance comply with local legal regulations on application in hazardous areas. Annex A presents general guideli
41、nes for instrument selection, instrument test and operational procedures of the instruments considered in this International Standard. Annex B lists the data of particular importance for the instrument documentation. DIN EN ISO 15970:2014-09 EN ISO 15970:2014 (E) 5 1 Scope This international Standar
42、d gives requirements and procedures for the measurement of the properties of natural gas that are used mainly for volume calculation and volume conversion: density at reference and at operating conditions, pressure, temperature and compression factor. Only those methods and instruments are considere
43、d that are suitable for field operation under the conditions of natural gas transmission and distribution, installed either in-line or on-line, and that do not involve the determination of the gas composition. This International Standard gives examples for currently used instruments that are availab
44、le commercially and of interest to the natural gas industry. NOTE Attention is drawn to requirements for approval of national authorization agencies and to national legal regulations for the use of these devices for commercial or official trade purposes. The density at reference conditions (sometime
45、s referred to as normal, standard or even base density) is required for conversion of volume data and can be used for other physical properties. Density at operating conditions is measured for mass-flow measurement and volume conversion using the observed line density and can be used for other physi
46、cal properties. This International Standard covers density transducers based on vibrating elements, normally suitable for measuring ranges of 5 kg/m3to 250 kg/m3. Pressure measurement deals with differential, gauge and absolute pressure transmitters. It considers both analogue and smart transmitters
47、 (i.e. microprocessor based instruments) and, if not specified otherwise, the corresponding paragraphs refer to differential, absolute and gauge pressure transmitters without distinction. Temperature measurements in natural gas are performed within the range of conditions under which transmission and distribution are normally carried out (253 K 99,95 %) or reference gas mixtures. One of the gases shall have a density at reference conditions which is in the range of that of the
