Current Profilers

Model : Aquadopp Z-Cell

From : NORTEK


In the new Aquadopp Z-Cell, Nortek has extended the profiling range by introducing a “Cell Zero”. This new feature is generated by an extra set of horizontal transducers. The transducers operate at a different frequency (2 MHz) and provide the 2D current velocity at the level of the instrument.

 

The Aquadopp Z-cell is a hardware and firmware extension to the 1 MHz Aquadopp profiler.  The instrument has the same specifications as the Aquadopp profiler but with the added benefit of a measurement cell located at the level of the instrument. The photos below shows how an extra set of transducers is embedded into the 1 MHz profiler

 

head (Z-cell 1 MHz left) and the 600 kHz hea600 kHz Z-celld (right).  

 

Because the Z-cell requires an extra set of receiver channels, the Z-cell feature is not backward compatible with electronics shipped before 2010.  Please note that the 1 MHz unit has three horizontal beams (at the same azimuth angle as the slanted beams but slightly offset) while the 600 kHz version only has two horizontal beams.

The near instrument data loss in traditional current profilers comes from the combination of mounting height, the electroacoustic blanking and the offset of the first measurement cell. In many applications this means that valuable and interesting information about the ocean current is lost.  The Z-cell solves this problem by measuring the horizontal velocity at the level of the instrument. 

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