Measurement of gas flow by means of critical flow nozzles (ISO 9300:2022); German version EN ISO 9300:2022
Edition 2023-11

Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Part 5: Cone meters (ISO 5167-5:2022); German version EN ISO 5167-5:2022
Edition 2023-08

Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Part 6: Wedge meters (ISO 5167-6:2022); German version EN ISO 5167-6:2022
Edition 2023-08

Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Part 4: Venturi tubes (ISO 5167-4:2022); German version EN ISO 5167-4:2022
Edition 2023-08

Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Part 3: Nozzles and Venturi nozzles (ISO 5167-3:2022); German version EN ISO 5167-3:2022
Edition 2023-08

Quantities and units - Part 11: Characteristic numbers (ISO 80000-11:2019); German version EN ISO 80000-11:2020
Edition 2022-10

Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Part 1: General principles and requirements (ISO 5167-1:2022); German version EN ISO 5167-1:2022
Edition 2023-08

Letter symbols for physical quantities; symbols to be used for fluid mechanics
Edition 1989-09

Industrial-process control valves - Part 2-3: Flow capacity - Test procedures (IEC 60534-2-3:2015); German version EN 60534-2-3:2016
Edition 2017-01

Industrial valves - Test of flow resistance using water as test fluid; German version EN 1267:2012
Edition 2012-04