TS EN ISO 772

TS EN ISO 772 is a terminology standard that brings together the terms, definitions and symbols used in hydrometry. It is concerned with giving common technical meaning to concepts related to flow, level, discharge, cross-section and measurement, so that work on rivers, channels, open channels and similar water flows can be described and compared more consistently.

Why hydrometric vocabulary matters

Hydrometry is the field concerned with measuring the movement and quantity of water. Precise terminology matters because the same word can carry different meanings in different engineering contexts. Symbols are equally important in equations, measurement records and calculations, where a shared notation reduces ambiguity. This standard serves as a controlled vocabulary source for that purpose.

Technical value of the scope

• The standard is limited to terms, definitions and symbols used in standards for hydrometry.
• From the title and scope, it addresses vocabulary rather than prescribing measurement methods.
• It supports a common conceptual framework for open-channel flow and related hydrometric work.
• Consistent terminology helps reduce differences in calculation, data exchange and technical interpretation.

In general technical use, hydrometry covers the measurement of water velocity, discharge, stage and flow distribution. Vocabulary standards of this kind do not define instruments or test procedures; instead, they help engineers, laboratories and specifiers use the same concepts in the same way. TS EN ISO 772 supports that common language and helps related standards work together more clearly.