# ISO 3511-1:1977 — Withdrawn and superseded ISO standards For ISO 3511-1:1977, item title is Process measurement control functions and instrumentation — Symbolic representation — Part 1: Basic requirements; status code is 9599; successor is ISO/WD 3511-1 | ISO 14617-2:2025; withdrawn / published date is 1977-07-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 3511-1:1977 _(verified: appears in the quote below)_ - **Item title:** Process measurement control functions and instrumentation — Symbolic representation — Part 1: Basic requirements _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO/WD 3511-1 | ISO 14617-2:2025 - **Withdrawn / published date:** 1977-07-01 _(verified: appears in the quote below)_ ## What the source says > 8869,IS,,ISO 3511-1:1977,Process measurement control functions and instrumentation — Symbolic representation — Part 1: Basic requirements,Fonctions et instrumentation pour la mesure et la régulation des processus industriels — Représentation symbolique — Partie 1: Principes de base,1977-07-01,1,"['25.040.40','01.080.30']",ISO/TC 10/SC 10,9599,,"[8870,83364]","['en','fr']",10,"

Forms one part of four which provide a universal means of communication between the various interests involved in the design, manufacture, installation and operation of measurement and control equipment used in the process industries. This part establishes a symbols system for use in depicting the basic functions. Th ## Source - https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv Last verified: 2026-08-05. Review by: 2027-02-01. Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).