ISO 1438-1:1980
Water flow measurement in open channels using weirs and Venturi flumes; Part 1 : Thin-plate weirs

Standard No.

ISO 1438-1:1980

Release Date

1980

Published By

International Organization for Standardization (ISO)

Status

Withdraw 2008-04

Replace By

ISO 1438-1:1980/Amd 1:1998

Latest

ISO 1438-1:1980/Amd 1:1998

Scope

Specifies methods for the measurement of water flow in open channels using rectangular and triangular-notch (V-notch) thin-plate weirs. The flow conditions considered are limited to steady, free and fully ventilated discharge. Recommended discharge coefficients are applicable to water only in the approximate range of temperatures from 5 to 30 鳦.

ISO 1438-1:1980 history

• 1998 ISO 1438-1:1980/Amd 1:1998 Water flow measurement in open channels using weirs and Venturi flumes - Part 1: Thin-plate weirs; Amendment 1
• 1980 ISO 1438-1:1980 Water flow measurement in open channels using weirs and Venturi flumes; Part 1 : Thin-plate weirs