BS EN ISO 6416:2005

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Applications
5 Method of measurement
6 Flow velocity determination by the ultrasonic
   (transit time) method
7 Gauge configuration
8 Determination of discharge
9 System verification and calibration
10 Site selection
11 Site survey - Before design and construction
12 Operational measurement requirements
13 Gauging station equipment
14 Measurement uncertainties
Annex A (informative) - Principle of measurement uncertainty
Annex B (informative) - Performance guide for hydrometric
        equipment for use in technical standard examples
Bibliography

Specifies the establishment and operation of an ultrasonic (transit-time) gauging station for the continuous measurement of discharge in a river, an open channel or a closed conduit.