ISO/TR 12767:2023

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ISO/TR 12767:2023 is an international standard published by the International Organization for Standardization (ISO). It specifically focuses on "Measurement of fluid flow by means of pressure differential devices — Guidelines on the effect of departure from the specifications and operating conditions given in ISO 5167". Essentially, it provides guidance on how deviations from standard conditions can affect the accuracy of flow measurement using pressure differential methods.