1、BRITISH STANDARD BS ISO 14617-2:2002 Graphical symbols for diagrams Part 2: Symbols having general application ICS 01.080.30 BS ISO 14617-2:2002 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2004 BSI 31 August 2004 ISBN 0 580 4436
2、8 X National foreword This British Standard reproduces verbatim ISO 14617-2:2002 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee TDW/4, Technical product specification, which has the responsibility to: A list of organization
3、s represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or
4、by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immu
5、nity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them
6、 in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to v, a blank page, pages 1 to 24, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendment
7、s issued since publication Amd. No. Date Comments Reference number ISO 14617-2:2002(E)INTERNATIONAL STANDARD ISO 14617-2 First edition 2002-09-01 Graphical symbols for diagrams Part 2: Symbols having general application Symboles graphiques pour schmas Partie 2: Symboles dapplication gnrale BSISO1461
8、72:2002ii BSISO146172:2002IS-71641 O2:(2002E) iiiContents Page Foreword iv Introduction. v 1 Scope 1 2 Normative references 1 3 Terms and definitions. 2 4 Components, devices, functional units, equipment, plants and functions 6 5 Variability . 13 6 Characteristics for force, motion, mass flow, magne
9、tic flow and signals 15 7 Directions. 16 8 Radiation 20 9 Envelopes (tanks) 20 10 Materials. 21 11 Simplifications. 22 Bibliography 24 BSISO146172:2002IS-71641 O2:(2002E) iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
10、member bodies). The work of preparing International Standards is normally 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, govern
11、mental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Di
12、rectives, Part 3. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member b
13、odies casting a vote. Attention is drawn to the possibility that some of the elements of this part of ISO 14617 may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 14617-2 was prepared by Technical Committee ISO/TC 10, Technical p
14、roduct documentation, Subcommittee SC 10, Process plant documentation and tpd-symbols. ISO 14617 consists of the following parts, under the general title Graphical symbols for diagrams: Part 1: General information and indexes Part 2: Symbols having general application Part 3: Connections and related
15、 devices Part 4: Actuators and related devices Part 5: Measurement and control devices Part 6: Measurement and control functions Part 7: Basic mechanical components Part 8: Valves and dampers Part 9: Pumps, compressors and fans Part 10: Fluid power converters Part 11: Devices for heat transfer and h
16、eat engines Part 12: Devices for separating, purification and mixing Part 15: Installation diagrams and network maps Other parts are under preparation. BSISO146172:2002IS-71641 O2:(2002E) vIntroduction The purpose of ISO 14617 in its final form is the creation of a library of harmonized graphical sy
17、mbols for diagrams used in technical applications. This work has been, and will be, performed in close cooperation between ISO and IEC. The ultimate result is intended to be published as a standard common to ISO and IEC, which their technical committees responsible for specific application fields ca
18、n use in preparing International Standards and manuals. BSISO146172:2002BSISO146172:2002INTENRATIONAL TSANDADR IS-71641 O2:(2002E)1Graphical symbols for diagrams Part 2: Symbols having general application 1 Scope This part of ISO 14617 specifies graphical symbols of a general character, mainly for u
19、se in building-up complete symbols representing specific products and functions in diagrams. For the fundamental rules of creation and application of graphical symbols in diagrams, see ISO 81714-1. For an overview of ISO 14617, information on the creation and use of registration numbers for identify
20、ing graphical symbols used in diagrams, rules for the presentation and application of these symbols, and examples of their use and application, see ISO 14617-1. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of
21、 this part of ISO 14617. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of ISO 14617 are encouraged to investigate the possibility of applying the most recent editions of the normative documen
22、ts indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 31-11:1992, Quantities and units Part 11: Mathematical signs and symbols for use in the physical sci
23、ences and technology ISO 14617-1:2002, Graphical symbols for diagrams Part 1: General information, general indexes ISO 14617-3:2002, Graphical symbols for diagrams Part 3: Connections and related devices ISO 14617-6:2002, Graphical symbols for diagrams Part 6: Measurement and control functions ISO 8
24、1714-1:1999, Design of graphical symbols for use in the technical documentation of products Part 1: Basic rules IEC 60617-2:1996, Graphical symbols for diagrams Part 2: Symbol elements, qualifying symbols and other symbols having general application IEC 60617-13:1993, Graphical symbols for diagrams
25、Part 13: Analogue elements BSISO146172:2002IS-71641 O2:(2002E) 2 3 Terms and definitions For the purposes of this part of ISO 14617, the following terms and definitions apply. NOTE The list has been restricted to terms whose meaning is not obvious and which have not been defined elsewhere in an Inte
26、rnational Standard, or which have been defined in various ways in different standards. In preparing these definitions, ISO and IEC standards on terminology have been consulted; see the references in parentheses. However, most of the definitions in those standards were prepared by different technical
27、 committees within a restricted scope. This means that many terms so defined have to be given more general or neutral definitions when applied in the context of graphical symbols. 3.1 complex device device consisting of several functionally interrelated components or elements, the description of whi
28、ch needs a diagram EXAMPLE An automatic star-delta starter; an automatic actuator consisting of a motor, a blocking device, a gear-box, a position switch. 3.2 functional unit constructional assembly containing functionally interrelated components or devices IEC 60050-441 3.3 input/output label graph
29、ical symbol, letter(s) or number indicating the function of an input/output of a component or device IEC 60617-12 3.4 conversion change of one form of energy, information or material into another IEC 60050-551, IEC 60050-601 3.5 hysteresis property of a device whereby it gives different output value
30、s in relation to its input values, depending on the directional sequence in which the input values have been applied IEC 60050-351 3.6 stabilizing function where the influence of other quantities is eliminated or reduced so that the level of an output quantity can be regarded as constant IEC 60050-3
31、51 3.7 enabling making it possible for a function to be performed IEC 60617-12 BSISO146172:2002IS-71641 O2:(2002E) 33.8 compensation effect to counteract sources of error due to variations in operating conditions 3.9 postponed output function function where the change of state of an output is postpo
32、ned until the input signal initiating the change returns to its original state IEC 60617-12 3.10 high/low limitation function limiting a quantity to be higher/lower than a predetermined value IEC 60050-151 3.11 dead band threshold finite range of values within which variation of the input variable d
33、oes not produce any noticeable change in the output variable IEC 60050-351 3.12 high/low selection function by which the highest/lowest value is selected 3.13 automatic, adj. control, operation self-acting (not needing human intervention) IEC 60050-151 3.14 complex function function whose characteri
34、stic cannot easily be described only by a mathematical expression but needs a description by supplementary text, a graph, a table, etc. IEC 60617-12 3.15 bias function giving an output corresponding to that portion of an input signal exceeding a predetermined threshold value IEC 60050-393 3.16 rever
35、se function reverse action mathematical function Y = 1 X, i.e. when X is 0 %, then Y is 100 %, when X is 100 %, then Y is 0 % IEC 60050-351 BSISO146172:2002IS-71641 O2:(2002E) 4 3.17 characteristic quantity measuring device quantity whose name characterizes the device and its function EXAMPLE The ch
36、aracteristic quantity for a safety valve is “pressure”; for an overcurrent relay, “current”. IEC 60050-446 3.18 pilot switch monitoring device actuated in response to specified conditions of a non-electric characteristic quantity EXAMPLE Pressure, temperature, speed, flow rate or liquid level. IEC 6
37、0050-441 3.19 logic negation condition mainly used with binary logic elements where the logic state 1 (TRUE) is converted to a logic state 0 (FALSE) or vice versa IEC 60617-12, IEC 61082-2 3.20 logic inversion condition mainly used with binary logic elements where a higher physical level is converte
38、d to a lower physical level or vice versa IEC 60617-12, IEC 61082-2 3.21 feedback controller device in which the control action is made to depend on the measurement of the controlled variable IEC 60050-351 3.22 variability ability of changing a property cf. adjustability (3.23) and inherent variabil
39、ity (3.25) 3.23 adjustability ability to adjust the setting of a component or device IEC 60050-371 cf. variability (3.22) 3.24 pre-set adjustability ability to adjust the setting of a component or device before normal service BSISO146172:2002IS-71641 O2:(2002E) 53.25 inherent variability variability
40、 depending on the inherent characteristic of a component or device IEC 60050-351 cf. variability (3.22) and adjustability (3.23) 3.26 reference direction direction arbitrarily fixed from one point A to another point B NOTE A flow is considered as positive when its actual direction is from point A to
41、 point B. A pressure or voltage is considered as positive when the pressure or potential is higher in point A than in point B. IEC 60375 3.27 correlation indication graphical symbol indicating correlated directions, polarities, etc. 3.28 stepping function providing displacement or rotation in steps
42、3.29 bidirectional having the property to move, transmit, etc. in two alternative, opposite directions IEC 60050-521 3.30 envelope tank gas- or watertight enclosure for ensuring the function of the component of which the envelope or tank is a part IEC 60050-531 NOTE An envelope or tank is a part of
43、a component. The term should not be confused with the outline (periphery) of a graphical symbol. BSISO146172:2002IS-71641 O2:(2002E) 6 4 Components, devices, functional units, equipment, plants and functions 4.1 Symbol of a basic nature 4.1.1 101 Complex device, functional unit, equipment, plant, fu
44、nction See R101 (4.2.1). 4.2 Application rules for the symbol in 4.1 4.2.1 R101 The symbol shall be used when it is not possible or practical to construct a graphical symbol by combining symbols for the constituent parts of a component or device or when a specific symbol for a component or device do
45、es not exist, for functions. The asterisk shall be replaced with information as stated in a) to g) below or shall be omitted if the symbol can be understood without such information, such as by means of input and output labels, see symbol 106 (4.3.1.1). For an example, see X112 (4.5.12). a) Graphica
46、l symbol(s) representing the most significant constituent(s). For an example, see X101 (4.5.1). b) Mathematical signs or formulae or both, letter symbols for quantities, chemical formulae, graphs and symbols from International Standards. Mathematical signs shall be in accordance with ISO 31-11. For
47、examples, see X102 (4.5.2) to X105 (4.5.5). c) An abbreviation, preferably mnemonic based on the English language. For an example, see X106 (4.5.6). If the mnemonic is not standardized and its interpretation is not self- evident to a reader of the diagram, the mnemonic used shall be explained on the
48、 diagram or in a supporting document. d) Graphical symbols providing supplementary information related to the inputs and outputs in accordance with symbol 106 (4.3.1.1). For an example, see X112 (4.5.12). e) Graphical symbols providing supplementary information related to the assembly as a whole, lo
49、cated inside or outside the solid outline. For examples, see X108 (4.5.8) to X111 (4.5.11). f) If it is impossible to describe the meaning of the graphical symbol by the methods given in a) to e), a short, descriptive text may be added. This text should be written in English, independent of the language or language being used in the diagram. However, for use limited to a defined
