1、BSI Standards PublicationBS ISO 15519-2:2015Specifications for diagrams forprocess industryPart 2: Measurement and controlBS ISO 15519-2:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 15519-2:2015.The UK participation in its preparation was entrusted to T
2、echnicalCommittee TDW/4, Technical Product Realization.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The Britis
3、h Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 70877 0ICS 01.080.30; 01.110Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 J
4、une 2015.Amendments issued since publicationDate Text affectedBS ISO 15519-2:2015 ISO 2015Specifications for diagrams for process industry Part 2: Measurement and controlSpcifications pour schmas de lindustrie de traitement Partie 2: Mesurage et contrleINTERNATIONAL STANDARDISO15519-2First edition20
5、15-06-01Reference numberISO 15519-2:2015(E)BS ISO 15519-2:2015ISO 15519-2:2015(E)ii ISO 2015 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2015, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any f
6、orm or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonn
7、et 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 15519-2:2015ISO 15519-2:2015(E)Foreword vIntroduction vi1 Scope .12 Normative references 13 Terms, definitions, and abbreviated terms .13.1 Terms related to control . 13.2 Docume
8、nt types . 33.3 Abbreviated terms . 34 Documentation and process control principles.34.1 Introduction 34.2 Diagram types, structures, and life cycle aspects 44.3 Process control interrelations . 54.4 Information exchange between process and control systems . 65 Exchange of process control informatio
9、n .75.1 Symbols for information exchange 75.1.1 General 75.1.2 Placement of information inside the PCI symbol. 85.1.3 Placement of information outside the PCI symbol . 95.2 Letter codes . 95.2.1 General 95.2.2 Representation of letter codes for process variables . 95.2.3 Representation of letter cod
10、es for control functions.105.2.4 Sequence of letter codes for control functions .115.2.5 Modifying letter codes .125.3 Reference designation . 136 Representation in general .136.1 General 136.2 Signal lines . 136.3 Graphical symbols . 146.3.1 General. 146.3.2 Instruments with integrated display .146
11、.3.3 Multifunction instruments . 146.3.4 Instruments forming a group . 156.3.5 Differentiating of representation 156.3.6 Graphical symbol “groups” in diagrams .157 Representation in diagrams 157.1 Introduction . 157.2 Process flow diagram, PFD 167.2.1 Description .167.2.2 Application . 167.2.3 Conte
12、nts 167.2.4 Representation .177.3 Process and instrumentation diagram, PID 187.3.1 Description .187.3.2 Application . 187.3.3 Contents 187.3.4 Representation .197.4 Process control diagram, PCD . 207.4.1 Description .207.4.2 Application . 217.4.3 Contents 217.4.4 Representation .21 ISO 2015 All righ
13、ts reserved iiiContents PageBS ISO 15519-2:2015ISO 15519-2:2015(E)7.5 Typical diagrams, TYD . 227.5.1 Description .227.5.2 Application . 227.5.3 Contents 227.5.4 Representation .22Annex A (informative) Graphical symbols for connections main process equipment, measurement, actuation, and control .24A
14、nnex B (informative) Examples of representation of measurement, control, and actuation tasks 34Annex C (informative) Diagram examples .36Annex D (informative) Information exchange between process and control system .40Annex E (informative) Relationship between terms for closed loop control, measurem
15、ent, actuation, etc. 42Bibliography .43iv ISO 2015 All rights reservedBS ISO 15519-2:2015ISO 15519-2:2015(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is no
16、rmally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in
17、 the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular t
18、he different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this docu
19、ment may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.or
20、g/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO pr
21、inciples in the Technical Barriers to Trade (TBT), see the following URL: Foreword Supplementary information .The committee responsible for this document is ISO/TC 10, Technical product documentation, SC 10, Process plant documentation.ISO 15519 consists of the following parts, under the general tit
22、le Specifications for diagrams for process industry: Part 1: General rules Part 2: Measurement and control ISO 2015 All rights reserved vBS ISO 15519-2:2015ISO 15519-2:2015(E)Introduction0.1 GeneralThe ISO 15519 series consists of standards for specification of diagrams for process industry, publish
23、ed under the general title: Specification for diagrams for process industry.This International Standard specifies preparation of different types of diagrams and use of graphical symbols, letter codes, and reference designation in diagrams. This International Standard addresses all process industry f
24、ields for example chemical, petrochemical, power, pharmaceutical, foodstuff, pulp, and paper.This part of ISO 15519 deals with representation of measurement, actuation, and control in process diagrams which in this context covers process flow diagrams (PFD), process and instrument diagrams (PID), pr
25、ocess control diagrams (PCD), and typical diagrams (TYD).0.2 Engineering interrelationsProcess diagrams, which represent the configuration of the process system and of the measurement, actuation, and control systems, involves engineering disciplines like process, mechanical, instrumentation, electri
26、cal, and control as illustrated in Figure 1.Key1 process2 mechanical3 instrumentation4 electrical5 controlA measurementB actuationFigure 1 Interrelations between engineering disciplinesFigure 1 illustrates the discipline complexity of process systems which force diagrams not only to focus on individ
27、ual disciplines but overlap to neighbouring disciplines. This is, for example, done in the process and instrumentation diagram which shows mechanical, instrumentation, and electrical objects in same diagram.As process engineering by tradition is an ISO discipline and control engineering is IEC disci
28、pline representation of measurement and control in diagrams need to be coordinated and unambiguously.vi ISO 2015 All rights reservedBS ISO 15519-2:2015ISO 15519-2:2015(E)0.3 Control system technology and influence on documentationThe technological development within Information Technology constantly
29、 challenges the process industry to use “state of the art” technology for engineering of process and control systems. This puts pressure on the standardization organisations to deliver up to date International Standards. As development time and expected lifetime of a standard at present is overtaken
30、 several times by the IT development, the standard developers need to develop standards which focus on basic principles and rules to secure high quality documentation and exchange of information.At present, the configuration and functionality of the process control system are programmed direct in mo
31、dern control system as control Programmable Logic Controller (PLC) and Distributed Control Systems (DCS). In addition, these systems are self-documenting which could lead to the assumption that traditional diagram documentation are superfluous.Diagrams are however an important tool for documentation
32、 and representation of process system information in all lifecycle phases of a process plant. In the development and engineering phase, diagrams are used also for exchange and sharing of technical information between engineering disciplines and in operation and maintenance phases diagrams are used i
33、n daily operation and as part of operation and maintenance manuals.0.4 Letter codesISO 14617-6, 7.3.1 have been moved to this part of ISO 15519 and the description has been changed to “Letter codes for Process Control Information (PCI)”.ISO 14617-6 will be revised at first periodical review or revis
34、ion after publication of this International Standard.0.5 FiguresFigures in this International Standard are only examples for illustration of a given rule in the standard.0.6 Reference designationIn this part of ISO 15519, IEC 81346-1, IEC 81346-2, and ISO/TS 81346-3 are used to illustrate the applic
35、ation of reference designation in diagrams. ISO 2015 All rights reserved viiBS ISO 15519-2:2015BS ISO 15519-2:2015Specifications for diagrams for process industry Part 2: Measurement and control1 ScopeThis part of ISO 15519 provides rules and guidelines for representation of measurement, control, an
36、d actuation in diagrams for process industry.General rules and guidelines for preparation of diagrams for process industry, for example types and descriptions of diagrams, layout of diagrams, graphical symbols, lines and connection, reference designation, are given in ISO 15519-1.Rules and guideline
37、s for preparation of electrotechnical diagrams are given in IEC 61082-1.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated referen
38、ces, the latest edition of the referenced document (including any amendments) applies.ISO 10209, Technical product documentation Vocabulary Terms relating to technical drawings, product definition and related documentationISO 14617 (all parts), Graphical symbols for diagramsISO 15519-1, Specificatio
39、n for diagrams for process industry Part 1: General rulesIEC 81346-1, Industrial systems, installations and equipment and industrial products Structuring principles and reference designations Part 1: Basic rulesIEC 81346-2, Industrial systems, installations and equipment and industrial products Stru
40、cturing principles and reference designations Part 2: Classification of objects and codes for classesISO/TS 81346-3, Industrial systems, installations and equipment and industrial products Structuring principles and reference designations Part 3: Application rules for a reference designation system3
41、 Terms, definitions, and abbreviated termsFor the purposes of this document, the terms and definitions given in ISO 15519-1, ISO 10209, IEC 81346-1, and the following apply.3.1 Terms related to control3.1.1actuatorfunctional unit that generates from the controller output variable the manipulated var
42、iable to drive the final controlling elementNote 1 to entry: If the final controlling element is mechanically actuated, it is controlled via an actuated drive. The actuator drives the actuating drive in this case.Note 2 to entry: See Annex E for the relationship between related terms.INTERNATIONAL S
43、TANDARD ISO 15519-2:2015(E) ISO 2015 All rights reserved 1BS ISO 15519-2:2015ISO 15519-2:2015(E)SOURCE: IEC 60050-351:2013, 351-28-073.1.2closed-loop controlprocess whereby one variable (quantity), namely the controlled variable is continuously measured, compared with another variable (quantity), na
44、mely the reference variable, and influenced in such a manner as to adjust to the reference variableNote 1 to entry: Characteristic for closed-loop control is the closed action in which the controlled variable continuously influences itself in the action path of the closed loop.SOURCE: IEC 60050-351:
45、2013, 351-26-013.1.3control functionmanipulation via the final controlling element of process media or process objects in order to bring the media or object into a condition or state defined by the process control system on basis of measured process variables and pre-defined values3.1.4control loopa
46、ssembly of elements incorporated in the closed action of a closed-loop controlSOURCE: IEC 60050-351:2013, 351-26-113.1.5final controlling elementfunctional unit forming part of the controlled system and arranged at its input, driven by the manipulated variable and manipulating the mass flow or energ
47、y flowNote 1 to entry: If the final controlling element is mechanically actuated, an additional actuator (positioner) is used in some cases.Note 2 to entry: The output variable of the final controlling equipment is usually not free from feedback. The interface between the actuator and the final cont
48、rolling element should therefore be selected in such a way that the manipulated variable is not affected by feedback from the final controlling element.Note 3 to entry: See Annex E for the relationship between related terms.SOURCE: IEC 60050:2013, 351-28-083.1.6manipulateto change flows of mass, ene
49、rgy, or information by means of a final controlling elementNote 1 to entry: Manipulating can be affected continuously or by switching operations.Note 2 to entry: In control engineering, the final controlling element is regarded as belonging to a process.SOURCE: IEC 60050-351:2013, 351-22-083.1.7open-loop controlprocess in a system whereby one or more variables (variable quantities) as input variables influence other variables (variable quantities) as output variables in accordance with the proper laws of the systemNote 1
