Tracy B. Vermeyen, Kevin A. Oberg, and P. Ryan Jackson. 2009. "Laboratory Evaluation of an OTT Acoustic Digital Current Meter and a SonTek Laboratory Acoustic Doppler Velocimeter". Bureau of Reclamation, Report Number PAP-990.
Abstract: Recently, an acoustic current meter known as the OTT acoustic digital current meter (ADC) was introduced as an alternative instrument for streamgaging measurements. The Bureau of Reclamation and the U.S. Geological Survey collaborated on a side-by-side evaluation of the ADC and a SonTek/YSI acoustic Doppler velocimeter (ADV). Measurements were carried out in a laboratory flume to evaluate the performance characteristics of the ADC under a range of flow and boundary conditions. The flume contained a physical model of a mountain river with a diversion dam and variety of bed materials ranging from smooth mortar to a cobble bed. The instruments were installed on a trolley system that allowed them to be easily moved within the flume while maintaining a consistent probe orientation. More than 50 comparison measurements were made in an effort to verify the manufacturer’s performance specifications and to evaluate potential boundary disturbance for near-bed and vertical boundary measurements. Data and results from this evaluation are presented and discussed.
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