ISO 15519-2-2015 PDF

Full title and description

ISO 15519-2:2015 — Specifications for diagrams for process industry — Part 2: Measurement and control. This International Standard gives rules and guidelines for the representation of measurement, control and actuation elements in process-industry diagrams (PFD, PID, PCD, TYD) to ensure consistent, unambiguous documentation across the process industries.

Abstract

ISO 15519-2:2015 provides rules and guidelines for representation of measurement, control, and actuation in diagrams for the process industry. It complements the general diagram rules given in ISO 15519-1 and references graphical-symbol standards used for instrument and control representation.

General information

• Status: Published (International Standard — confirmed).
• Publication date: June 2015 (Edition 1, published 2015-06).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 01.110 (Technical product documentation); 01.080.30 (Graphical symbols for diagrams).
• Edition / version: Edition 1 (2015) — confirmed at 5‑year systematic review (confirmed 2021).
• Number of pages: 43 (ISO published page count).

Scope

This part of ISO 15519 specifies rules and guidelines for the representation of measurement, control and actuation in process diagrams. It applies to process flow diagrams (PFD), process and instrumentation diagrams (PID), process control diagrams (PCD) and typical diagrams (TYD), and addresses graphical symbols, line and connection conventions, reference designation and tagging practices used to document instrumentation and control systems in the process industries. It is intended to be used together with the general rules in ISO 15519-1.

Key topics and requirements

• Rules for depicting measurement, control and actuation elements (sensors, transmitters, controllers, final elements) on diagrams.
• Conventions for graphical symbols and their relation to the ISO 14617 series and other symbol standards.
• Line types, connection rules, and conventions for instrument signal and power connections.
• Reference designation and tagging practices for unambiguous identification of instruments and control functions.
• Guidance on diagram types (PFD, PID, PCD, TYD) and which instrumentation details belong on each type.
• Interrelation with electrical/electrotechnical diagram standards (for example IEC 61082-1) where applicable.

Typical use and users

Engineers and designers in the process industries (chemical, petrochemical, power, pharmaceutical, food, pulp & paper), instrumentation and control (I&C) engineers, CAD/drafting professionals preparing P&IDs and control diagrams, technical authors, and companies seeking consistent documentation for process control systems will use this standard to ensure clarity and interoperability of diagrams across disciplines and suppliers.

Related standards

Key related standards include ISO 15519-1 (Part 1: General rules) which defines overall diagram principles; the ISO 14617 series (graphical symbols for diagrams) for symbol definitions; IEC 61082-1 for preparation of electrotechnical diagrams; and ISO 10209 (vocabulary) referenced for terms. ISO 15519 (series) groups the parts for process-industry diagram specifications.

Keywords

process diagrams, measurement, control, actuation, P&ID, PFD, PCD, TYD, graphical symbols, reference designation, instrumentation, ISO 15519

FAQ

Q: What is this standard?

A: ISO 15519-2:2015 is an International Standard that defines rules and guidelines for representing measurement, control and actuation equipment and functions in process‑industry diagrams.

Q: What does it cover?

A: It covers representation conventions for instruments and control devices on diagrams (PFD, PID, PCD, TYD), including graphical symbols, lines and connections, tagging/reference designation and where instrument information should appear in different diagram types.

Q: Who typically uses it?

A: Instrumentation & control engineers, process engineers, CAD/drafting specialists, document controllers, and technical authors in process industries use it to produce consistent, unambiguous diagrams for design, operation and maintenance.

Q: Is it current or superseded?

A: The 2015 edition (Edition 1) was published in June 2015 and was reviewed and confirmed in 2021; therefore the 2015 edition is the current confirmed version at the time of the ISO record. Users should check national bodies or ISO for any newer revisions beyond the confirmed 2015 edition.

Q: Is it part of a series?

A: Yes — ISO 15519 is a series for specifications for diagrams for the process industry. Part 1 covers general rules (ISO 15519-1); Part 2 covers measurement and control (this document).

Q: What are the key keywords?

A: Measurement, control, actuation, process diagrams, P&ID, PFD, graphical symbols, instrumentation, reference designation, ISO 15519.