ISO 1438:2017 defines the requirements for the use of rectangular and triangular (V-notch) thin-plate weirs for the measurement of flow of clear water in open channels under free flow conditions. It includes the requirements for the use of full-width rectangular thin-plate weirs in submerged (drowned) flow conditions.
Status: PublishedPublication date: 2017-04
Edition: 3Number of pages: 60
Technical Committee: ISO/TC 113/SC 2 Flow measurement structures
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