Ideal for continuous flow monitoring in small channels from 1 to 16 ft (0.3 to 5 m) deep, the Argonaut-SW (shallow water) offers advanced Doppler performance for sites previously thought impossible to measure. Typically mounted on the bottom of a channel, stream, or pipe, the SW directly measures water level and vertically-integrated water velocity, and calculates discharge based on user-selected algorithms.
The Argonaut-SW uses one upward looking acoustic beam to measure water level, and two angled acoustic beams to measure 2-dimensional water velocity. Velocity measurements are made in a vertically-integrated cell that begins about 0.4 ft above the SW and extends all the way to the water's surface. The cell is dynamic and adjusts to rapidly changing water levels.
Velocity data from the vertically-integrated cell is used to calculate discharge in one of several ways, including entering the cross sectional area, using theoretical equations for flow calculations, or entering an empirically derived "index-velocity" relation. Velocity profiling can be accomplished with the multi-cell option, which enables the SW to record velocity in up to 10 additional user-defined cells.
The compact, low-profile Argonaut-SW is ideal for shallow water monitoring, stormwater monitoring, and flood alert applications. Not only does the SW eliminate many of the problems experienced when using weirs and flumes for continuous discharge monitoring, but its vertically-integrated, dynamic cell size enables it to make accurate measurements in complex flow regimes, such as stratified or reversing flow conditions and rapidly changing stage conditions.
Features include:
-Continuously measures water level & 2-dimensional vertically-integrated velocity
-1 to 16 ft. (0.3 to 5 m) measurement range
-Dynamic measurement range self-adjusts with changing water level
-Internal discharge calculations
-Current profiling with multi-cell option
-Compatible with NexSens iChart software & communication devices
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