ASME Y14.40.5:2002 pdf free download – GRAPHIiCAL SYMBOLS FOR DIAGRAMS, PART 5: MEASUREMENT AND CONTROL DEVICES
1 SCOPE
This Standard specifies graphical symbols for compo nents and deviccs used in measurement and control systems, represented in diagrams. For the fundamental rules of creation and application of graphical symbols in diagrams, see ASME Y14.40.0. For an overview of the ASME Y14.40 series, informa- tion on the creation and use of registration numbers for identifying graphical symbols used in diagrams, rules for the presentation and application of these symbols, and examples of their use and application, see ASME Y14.40.1.
2 REFERENCES
The following references contain provisions which, through reference in this text, constitute provisions of this Standard. For dated references, subsequent amend- ments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this Standard are encouraged to investigate the possibility of applying the most recent editions of the references indicated below. For undated references, the latest edi- tion applies. ASME Y14.40.0, Basic Rules for the Design of Graphical Symbols for Use in the Technical Documentation of Products ASME Y14.40.1, Graphical Symbols for Diagrams, Part 1: General Information and Indexes ASME Y14.40.2, Graphical Symbols for Diagrams, Part 2: Symbols Having General Application ASME Y14.40.4, Graphical Symbols for Diagrarns, Part 4: Actuators and Related Devices Publisher: The American Society of Mechanical Engi- neers (ASME International), Three Park Avenue
3 TERMS AND DEFINITIONS
For the purposes of this Standard, the following terms and definitions apply.
3.1 sensor: primary element of a measuring chain that con- verts the input variable into a signal suitable for mea- suremnent.
3.2 signal converter: device that changes a signal into a differ- ent signal, the physical nature of the output being the same as that of the input.
3.3 measuring transducer transmitter: device that accepts information in the form of a physical or chemical vari- able and converts it to an output variable of the same or another nature, according to a definite law.
3.4 detector: device that accepts information in the form of a physical or chemical variable and transmits a binary signal at a specified condition, cf. mensuring transducer (3.3).
3.5 indicator: device that shows the presence or absence of a phenomenon such as pressure, flow, and position or state, but which does not measure it.