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)

This technical specification establishes the fundamental principles for measuring fluid flow using differential pressure devices installed in full-bore circular cross-section pipes, specifically focusing on conical flowmeters. The document outlines the necessary geometric criteria, installation conditions, and performance requirements to ensure accurate flow measurement across a wide range of fluid types and operating conditions. It defines the mathematical relationships between the differential pressure generated and the flow rate, providing detailed guidance on the design and dimensions of the conical element and the associated pressure tapping arrangements. The content covers the determination of the discharge coefficient and the calculation of measurement uncertainty associated with the conical flowmeter configuration. Furthermore, it addresses the limitations regarding the Reynolds number, pipe diameter, and fluid properties to ensure reliable operation within the specified range. By adhering to these guidelines, industrial applications can achieve consistent and traceable flow measurements in various process industries. The document aligns with international best practices to facilitate interoperability and technical consistency across different regions and sectors utilizing this specific flow measurement technology.