# ISO 9110-2:1990 — Withdrawn and superseded ISO standards For ISO 9110-2:1990, item title is Hydraulic fluid power — Measurement techniques — Part 2: Measurement of average steady-state pressure in a closed conduit; status code is 9599; successor is ISO 9110-2:2020; withdrawn / published date is 1990-10-11, recorded from its source on 2026-08-05. - **Identifier:** ISO 9110-2:1990 _(verified: appears in the quote below)_ - **Item title:** Hydraulic fluid power — Measurement techniques — Part 2: Measurement of average steady-state pressure in a closed conduit _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 9110-2:2020 - **Withdrawn / published date:** 1990-10-11 _(verified: appears in the quote below)_ ## What the source says > 16705,IS,,ISO 9110-2:1990,Hydraulic fluid power — Measurement techniques — Part 2: Measurement of average steady-state pressure in a closed conduit,Transmissions hydrauliques — Techniques de mesurage — Partie 2: Mesurage de la pression moyenne dans un conduit fermé en régime permanent,1990-10-11,1,['23.100.01'],ISO/TC 131/SC 8,9599,,[73715],"['en','fr']",6,"

Establishes procedures for measuring the average steady-state pressure in a hydraulic fluid power conduit. Applies to the measurement in closed conduits with inside diameters greater than 3 mm, transmitting hydraulic fluid with velocities less than 25 m/s and pressures less than 70 MPa.

" ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).