BS EN ISO 5167-4:2022 PDF Download

A group of international standards aimed at monitoring fluid flow using pressure differential instruments includes BS EN ISO 5167-4:2022. This standard specifically addresses the use of venturi tubes. Minor adjustments will be made as part of the revision, which also aims to guarantee compatibility with the Guide to Uncertainty of Measurement (GUM) and unify changes made throughout the series.

This standard is meant for those who make pressure differential devices, as well as those who use them to measure other gases or liquids or operate in the natural gas business. It offers the geometry and instructions for using venturi tubes in a conduit that is flowing at full capacity to calculate fluid flow rate. Along with providing baseline data for flow rate calculations, it should be utilized in conjunction with BS EN ISO 5167-1.

When a fluid flows through a venturi tube at a subsonic speed and is regarded as a single phase, ISO 5167-4 is applicable. It encompasses "as cast," "machined," and "fabricated" venturi tubes. The measurement of pulsing flow or the use of uncalibrated venturi tubes in specific pipe sizes or Reynolds number ranges are exempt from this rule.

This standard is trustworthy and tried-and-true, offering a solid methodology and structure for measuring fluid flow. The standard has been updated and improved, and a new section on calibrating meters gives consumers more alternatives. Efficiency can be increased and hazards can be efficiently controlled by adhering to this standard. Overall, the UN Sustainable Development Goal 7 on access to affordable and clean energy is advanced by ISO 5167-4.

Compared to the 2003 edition, BS EN ISO 5167-4:2022 has undergone a number of changes. The ability to tap a single pressure on venturi tubes, the addition of discharge coefficient and uncertainty for a venturi tube with a machined convergent section, the addition of flow calibration for venturi tubes, and improved wording for the regulations regarding the spacing of multiple fittings are just a few of the noteworthy changes.