BS EN ISO 5167-1:2003 Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - General principles and requirements
This part of ISO 5167 defines terms and symbols and establishes the general principles for methods of
measurement and computation of the flowrate of fluid flowing in a conduit by means of pressure differential
devices (orifice plates, nozzles and Venturi tubes) when they are inserted into a circular cross-section conduit
running full. This part of ISO 5167 also specifies the general requirements for methods of measurement,
installation and determination of the uncertainty of the measurement of flowrate. It also defines the general
specified limits of pipe size and Reynolds number for which these pressure differential devices are to be used.
ISO 5167 (all parts) is applicable only to flow that remains subsonic throughout the measuring section and
where the fluid can be considered as single-phase. It is not applicable to the measurement of pulsating flow.
BS EN ISO 5167-1:2003 history
2022BS EN ISO 5167-1:2022 Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full. General principles and requirements (ISO 5167-1:2022)
2003BS EN ISO 5167-1:2003 Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - General principles and requirements