ISO 8999 pdf download

ISO 8999 pdf download.Reciprocating internal combustion engines — Graphical symbols 1 Scope This International Standard specifies graphical symbols for operator controls, gauges, tell-tale indicators and instructions for reciprocating internal combustion (RIC) engines in order to provide necessary information on their use and operation. It is applicable to RIC engines for land, rail traction and marine use, excluding engines used to propel road vehicles and aircraft. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents 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 3461 -1 :1 988, General principles for the creation ofgraphical symbols — Part1: Graphical symbols for use on equipment. ISO 3864:1 984, Safetycolours andsafetysigns. IEC 60073:1 996, Basic and safety principles for man-machine interface, marking and identification — Coding principles forindication devices andactuators. 3 Terms and definitions For the purposes of this International Standard, the following terms and definitions apply. 3.1 basic graphical symbol symbol used individually or in combination to make a composite symbol 3.2 composite symbol symbol made from combinations of symbol elements 4 Use of symbols 4.1 Symbols shall be as shown in clauses 5 to 7 of this International Standard. In general, symbols are shown in outline form. Where necessary, for legibility when reduced to a small size, enclosed areas within symbols or symbol elements may be filled in.4.2 The symbols included in clause 5 are basic symbols which may be used for general application as well as to create composite symbols. 4.3 The composite symbols included in clauses 6 and 7 are developed using basic symbols from clause 5 as elements where applicable to provide families of symbols associated with functions and systems. 4.4 As required, additional composite symbols may be developed using the basic symbols from clause 5, provided that the characteristics specified in ISO 3461 -1 be maintained. 4.5 Limitations inherent in some reproduction and display technologies may require increased line thickness or other minor modifications of symbols. Such modifications are acceptable provided the symbol remain unchanged in...