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Full Description

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.

 

Document History

  1. ISO 1438:2017

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    Hydrometry - Open channel flow measurement using thin-plate weirs

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  2. ISO 1438:2017


    Hydrometry - Open channel flow measurement using thin-plate weirs

    • Historical Version
  3. ISO 1438:2008


    Hydrometry - Open channel flow measurement using thin-plate weirs

    • Historical Version