# ISO 6416:1992 — Withdrawn and superseded ISO standards For ISO 6416:1992, item title is Measurement of liquid flow in open channels — Measurement of discharge by the ultrasonic (acoustic) method; status code is 9599; successor is ISO 6416:2004; withdrawn / published date is 1992-09-17, recorded from its source on 2026-08-05. - **Identifier:** ISO 6416:1992 _(verified: appears in the quote below)_ - **Item title:** Measurement of liquid flow in open channels — Measurement of discharge by the ultrasonic (acoustic) method _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 6416:2004 - **Withdrawn / published date:** 1992-09-17 _(verified: appears in the quote below)_ ## What the source says > 12762,IS,,ISO 6416:1992,Measurement of liquid flow in open channels — Measurement of discharge by the ultrasonic (acoustic) method,Mesure de débit des liquides dans les canaux découverts — Mesure du débit à l'aide de la méthode ultrasonique (acoustique),1992-09-17,2,['17.120.20'],ISO/TC 113/SC 1,9599,"[12761,12763]",[34374],"['en','fr']",28,"
Describes the establishment and operation of an ultrasonic gauging station for the measurement of discharge in a river, an open channel, or a closed conduit with a free water surface. Is limited to the 'time of travel of acoustic pulses' technique. Annex A describes the determination of flow direction.
" ## Source - https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv Last verified: 2026-08-05. Review by: 2027-02-01. Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).