Engineering resources

The source trail behind the symbols.

Standards give the work a common language. Design studies make that language usable on a real operator screen. This page shows both—and keeps recommendations separate from references we directly applied.

Applied standards
2
Design boards
4
Related references
10

How to read this page

Provenance without overclaiming.

  1. 01

    Applied reference

    A standard or public framework demonstrably used to guide the live library.

  2. 02

    Internal study

    A KonnectSymbols-created board used to compare geometry, state, and consistency.

  3. 03

    Further reading

    Relevant industry material offered for context, never presented as direct provenance.

Used in our work

Applied references

These references shaped the decisions behind a live symbol pack. Publisher excerpts below come from public official descriptions, not from the paid standards themselves.

Applied referenceISA-101.01-2015

International Society of Automation

Human Machine Interfaces for Process Automation Systems

Official overview free · standard purchase or member access

Publisher description

provide a trusted roadmap for designing, implementing, operating and maintaining Human Machine Interfaces (HMIs) in modern process automation systems.

Relevant to
  • High Performance P&ID
How we applied it

We translated its human-centered HMI direction into quiet default states, restrained color, redundant abnormal-state cues, and consistent light/dark operator canvases.

View official source
Applied referenceANSI/ISA-5.1-2024

International Society of Automation

Instrumentation and Control — Symbols and Identification

Official overview free · standard purchase or member access

Publisher description

A standardized system for depicting and identifying instruments, devices and their functions within instrumentation and control systems.

Relevant to
  • P&ID Schematic
  • Industrial Rendered
  • High Performance P&ID
How we applied it

It anchors our measured-variable letters, succeeding functions, loop numbers, instrument bubbles, and shared tag controls across the live packs.

View official source

From guidance to geometry

How we translated guidance into symbols

Standards establish a shared vocabulary. KonnectSymbols makes deliberate product and rendering choices within that vocabulary.

High Performance P&ID

Quiet until the process needs attention

Default equipment stays low contrast. Brightness carries active state, while compact color-and-shape marks distinguish priority alarms, faults, interlocks, and out-of-service equipment.Browse High Performance P&ID

P&ID Schematic

A consistent line language, not a pasted icon set

Valves, instruments, piping, and equipment share stroke rules and readable silhouettes. Editable states extend the drawing vocabulary without pretending to replace a project drafting specification.Browse P&ID Schematic

Shared ISA tagging

Identification travels with the equipment

Common guided patterns, custom project-approved identification letters, loop numbers, and mount conventions use the same controls across Industrial Rendered, High Performance P&ID, and P&ID Schematic symbols. The site does not reproduce the publisher's abbreviation tables.Browse Industrial Rendered

KonnectSymbols working references

Internal design studies

Preview-only records of the boards used to make and review the current packs. They are our interpretation—not pages from an ISA, IEC, or ISO publication.

Collection 01

P&ID complete reference

The four-page visual authority used to keep line types, instruments, equipment, fittings, and live states consistent across the P&ID pack.

KonnectSymbols P&ID reference for line types, piping symbols, valves, and fail actionsPreview only
Lines, piping and valvesLine types, pipe fittings, valve silhouettes, fail actions, and open/closed examples.
KonnectSymbols P&ID instrumentation and identification referencePreview only
InstrumentationInstrument bubbles, identification letters, mounting conventions, and loop notation.
KonnectSymbols P&ID equipment, vessels, fittings, and process symbol referencePreview only
Equipment and fittingsProcess equipment, vessels, fittings, flow elements, electrical, and safety symbols.
KonnectSymbols P&ID valve and equipment live-state legendPreview only
Live-state legendNormal, open, closed, running, stopped, alarm, manual, and out-of-service states.

Context, not provenance

Further reading

These references are useful next stops for engineering teams. Their inclusion does not mean they were used to draw the current catalog.

HMI systems3 references
Further readingISA-TR101.01-2022

International Society of Automation

HMI Philosophy

Official overview free · report purchase or member access

Publisher description

offers practical guidance for developing a comprehensive HMI philosophy.

Relevant to
  • HMI governance
  • Style guides
Why it is useful

Useful when turning a symbol library into a site-wide philosophy with ownership, conventions, and lifecycle controls.

View official source
Further readingISA-TR101.02-2019

International Society of Automation

HMI Usability and Performance

Official overview free · report purchase or member access

Publisher description

focuses on improving the usability and performance of HMIs to support safe and efficient operations.

Relevant to
  • Usability
  • Audit and validation
Why it is useful

A practical next step for evaluating whether a visual language performs well in the operating context, not only in a catalog preview.

View official source
Further readingIEC 63303:2024

International Electrotechnical Commission

Human machine interfaces for process automation systems

Official abstract free · standard purchase required

Publisher description

Defines general structures and functions of HMI systems.

Relevant to
  • International HMI lifecycle
  • System performance
Why it is useful

Relevant international context for teams formalizing the design, use, maintenance, and performance of process HMIs.

View official source
P&ID and documentation7 references
Further readingISA-TR5.1.02-2024

International Society of Automation

Instrumentation and Control — Identification System Guidelines

Official overview free · report purchase or member access

Publisher description

offers additional guidance, rationale and examples in general terms.

Relevant to
  • Tagging systems
  • Identification conventions
Why it is useful

Helpful for moving from editable symbol tags to a consistent project-wide instrument identification system.

View official source
Further readingISA-TR5.1.03-2024

International Society of Automation

Instrumentation and Control — Graphic Symbol Guidelines

Official overview free · report purchase or member access

Publisher description

provides more guidance in general terms on how to apply the symbols for instrumentation and control equipment drawings.

Relevant to
  • P&ID drafting
  • Symbol application
Why it is useful

Useful companion material when adapting a general-purpose symbol to a project-specific drawing convention.

View official source
Further readingISA-TR5.1.04-2026

International Society of Automation

Instrumentation and Control — Content for PFDs and P&IDs

Official overview free · report purchase or member access

Publisher description

Practical guidance for developing clear, consistent process flow diagrams and piping and instrumentation diagrams.

Relevant to
  • PFD content
  • P&ID content
Why it is useful

A broader documentation reference for deciding what belongs on a diagram beyond the geometry of individual symbols.

View official source
Further readingISO 10628-1:2014

International Organization for Standardization

Diagrams for the chemical and petrochemical industry — Part 1: Specification of diagrams

Official abstract and sample free · standard purchase required

Publisher description

Specifies the classification, content and representation of flow diagrams.

Relevant to
  • Diagram structure
  • Drafting rules
Why it is useful

Useful international context for the structure and presentation of chemical and petrochemical process diagrams.

View official source
Further readingISO 10628-2:2012

International Organization for Standardization

Diagrams for the chemical and petrochemical industry — Part 2: Graphical symbols

Official abstract and sample free · standard purchase required

Publisher description

Defines graphical symbols for diagrams in the chemical and petrochemical industry.

Relevant to
  • Process symbols
  • International conventions
Why it is useful

A useful comparison point for projects that need a broader international symbol vocabulary.

View official source
Further readingISO 14617-1:2025

International Organization for Standardization

Graphical symbols for diagrams — Part 1: General rules

Official abstract and sample free · standard purchase required

Publisher description

specifies general rules for and gives guidance on the preparation and presentation of graphical symbols for diagrams.

Relevant to
  • Symbol construction
  • Presentation rules
Why it is useful

Relevant when creating new project symbols that need to sit coherently beside established industrial diagram conventions.

View official source
Further readingISO 14617-2:2025

International Organization for Standardization

Graphical symbols for diagrams — Part 2: Graphical symbols

Official abstract and sample free · standard purchase required

Publisher description

specifies graphical symbols for diagrams related to industrial components, products and processing.

Relevant to
  • Industrial components
  • Diagram symbol library
Why it is useful

A broad current library for comparing general industrial component concepts beyond process-specific P&ID notation.

View official source

See the result

From reference to operator-ready art.