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Unit systems define coherent sets of measurement units used together (such as SI, Imperial, or custom domain-specific systems). Each unit system maps physical quantities to specific units. You can list available unit systems to discover the standard unit groupings defined in your CDF project.

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What unit systems are

A unit system is a collection of units that are used together for a given context. For example, the SI system uses meters, kilograms, and seconds, while Imperial might use feet, pounds, and seconds. Each quantity in a unit system maps to a specific unit from the units catalog.

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Listing unit systems

You can list all unit systems in your project to see which groupings are available. This helps you understand how units are organized and which system to use when configuring measurements or interpreting data.
Unit systems are often used when you need to convert between units or ensure that data from different sources uses compatible units.

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Key operations

  • List unit systems: Retrieve all available unit systems.
  • Retrieve by ID: Get a specific unit system and its unit mappings.
Unit systems complement the units catalog by defining how units are grouped and used together in practice.
Last modified on April 23, 2026