TS EN ISO 772

TS EN ISO 772 is a vocabulary and symbols standard for hydrometry, the technical field concerned with measuring water movement and related quantities. It provides a common language for terms used in standards dealing with rivers, open channels, discharge measurement and other water-flow observations, helping technical documents, methods and reports use the same meanings consistently.

Why a shared hydrometric vocabulary matters

Hydrometry combines measurement, field observation and hydraulic interpretation. Terms such as discharge, velocity, cross-sectional area and water level are closely related but not interchangeable. A vocabulary standard like this one helps prevent ambiguity when engineers, laboratories and specifiers discuss measurement results, compare methods or prepare technical documentation. In general technical context, this is especially important wherever flow data must be read the same way across different standards and organisations.

What this document covers

Based on the supplied scope, this document defines the terms and symbols used in hydrometry. Its focus is therefore on terminology and notation rather than on prescribing a specific test method, numerical limit or equipment requirement. In practice, such a standard supports measurement stations, river and channel work, data recording and reporting by aligning the language used across the hydrometric field.

• Promotes single-meaning use of technical terms.
• Supports consistent symbols and abbreviations in documentation.
• Provides a shared reference language across hydrometry standards.
• Reduces confusion in open-channel flow applications.