ISO 11655:1995

Measurement of liquid flow in open channels — Method of specifying performance of hydrometric equipment

Provides a method of specifying the performance of hydrometric equipment. Identifies, within a performance framework, the faktors that affect the range of uncertainty within which the hydrological quantity is converted into a numerical quantity. Applies to all equipment used for hydrological measurement, with the exception of equipment used for the determination of water quality.