Based on the operating principles of elbow flow meters, this paper states that the core of standardization of elbow flow meters is the standardization of hardware's structural dimension. On condition that the elbow flow meters' feature structural dimension parameters R/D are strictly kept the same, the flow coefficients of elbow flow meters with the same conduit diameter determined by experiments have good consistency. Comparison of the experimental results of several elbow flow meters with different conduit diameters shows that the flow coefficient increases as the conduit diameter decreases. The experiments and comparisons prove that the determination of hardware's structural dimension is essential in the standardization of elbow flow meters.
Keywords:
Elbow flow meters, standardization, feature structural dimension, R/D-ratio of elbow conduit's curvature radius to conduit diameter, reproducibility
