ISO 6416:2004描述了用于连续测量河流、明渠或封闭管道流量的超声波（传输时间）测量站的建立和运行。它还描述了该方法所依据的基本原理、相关仪表的操作和性能以及调试程序。 它仅限于超声脉冲技术的渡越时间，不适用于使用多普勒频移或相关或电平-流量技术的系统。 ISO 6416:2004不适用于结冰河流中的测量。

ISO 6416:2004 describes 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. It also describes the basic principles on which the method is based, the operation and performance of associated instrumentation and procedures for commissioning. It is limited to the transit time of ultrasonic pulses technique, and is not applicable to systems that make use of the Doppler shift or correlation orlevel-to-flow techniques. ISO 6416:2004 is not applicable to measurement in rivers with ice.