Specifies functional requirements of sounding and suspension equipment used in the direct measurement of depht and velocity of flow in open channels, including the collection of sediment samples. Does not apply to indirect methods such as echo sounding. This second edition cancels and replaces the first edition (1975).
ISO 3454:1983 history
2008ISO 3454:2008 Hydrometry - Direct depth sounding and suspension equipment
1983ISO 3454:1983 Liquid flow measurement in open channels; Direct depth sounding and suspension equipment