Natural gas - Measurement of properties - Volumetric properties: density, pressure, temperature and compression factor (ISO 15970:2008); German version EN ISO 15970:2014— 58 стр.
Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Part 5: Cone meters (ISO 5167-5:2016); German version EN ISO 5167-5:2016— 23 стр.