ISO 3455:2021
Hydrometry - Calibration of current-meters in straight open tanks

Standard No.

ISO 3455:2021

Release Date

2021

Published By

International Organization for Standardization (ISO)

Latest

ISO 3455:2021

Scope

This document specifies a calibration method for mechanical type, electromagnetic type and acoustic type hydrometric current-meters used for point velocity measurement of flowing water. The method requires towing the instrument through still water in a straight open tank. It includes measuring apparatus, the calibration procedure, the method of presenting the results and the uncertainties associated with the method.

ISO 3455:2021 Referenced Document

• ISO 2537 Hydrometry - Rotating-element current-meters
• ISO 772 Hydrometry — Vocabulary and symbols*， 2022-02-28 Update

ISO 3455:2021 history

• 2021 ISO 3455:2021 Hydrometry - Calibration of current-meters in straight open tanks
• 2007 ISO 3455:2007 Hydrometry - Calibration of current-meters in straight open tanks
• 1976 ISO 3455:1976 Liquid flow measurement in open channels; Calibration of rotating-element current-meters in straight open tanks