BS ISO 1438:2008
Hydrometry - Open channel flow measurement using thin-plate weirs

Standard No.

BS ISO 1438:2008

Release Date

2008

Published By

British Standards Institution (BSI)

Status

Be replaced 2017-06

Replace By

BS ISO 1438:2017

Latest

BS ISO 1438:2017

Replace

05/30140799 DC:2005 BS 3680-4A:1981

Scope

This International Standard defines the requirements for the use of rectangular and triangular (V-notch) thinplate 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.

BS ISO 1438:2008 history

• 2017 BS ISO 1438:2017 Hydrometry. Open channel flow measurement using thin-plate weirs
• 2008 BS ISO 1438:2008 Hydrometry - Open channel flow measurement using thin-plate weirs
• 1981 BS 3680-4A:1981 Methods of measurement of liquid flow in open channels - Weirs and flumes - Method using thin-plate weirs

BS ISO 1438:2008 Hydrometry - Open channel flow measurement using thin-plate weirs has been changed from BS 3680-4A:1981 Methods of measurement of liquid flow in open channels - Weirs and flumes - Method using thin-plate weirs.