ISO 748:2021
Hydrometry — Measurement of liquid flow in open channels — Velocity area methods using point velocity measurements
- Standard No.
- ISO 748:2021
- Release Date
- 2021
- Published By
- International Organization for Standardization (ISO)
- Latest
- ISO 748:2021
- Scope
- This document specifies methods for determining the velocity and cross-sectional area of water flowing in open channels and for calculating the discharge employing point velocity measurement devices. It is applicable to methods using rotating-element current meters, acoustic doppler velocimeters (ADVs), acoustic doppler current profiler (ADCP) stationary method, surface velocity measurement including floats and other surface velocity systems. Although some general procedures are discussed, this document does not describe in detail how to use or deploy these systems. NOTE For detailed procedures, refer to guidelines from instrument manufacturers and the appropriate public agencies.
ISO 748:2021 Referenced Document
- ISO 25377:2020 Hydrometric uncertainty guidance (HUG)
- ISO 772 Hydrometry — Vocabulary and symbols*， 2022-02-28 Update
ISO 748:2021 history
- 2021 ISO 748:2021 Hydrometry — Measurement of liquid flow in open channels — Velocity area methods using point velocity measurements
- 2007 ISO 748:2007 Hydrometry - Measurement of liquid flow in open channels using current-meters or floats
- 1997 ISO 748:1997 Measurement of liquid flow in open channels - Velocity-area methods
- 1979 ISO 748:1979 Liquid flow measurement in open channels; Velocity-area methods
- 1973 ISO 748:1973 Title missing - Legacy paper document
