Aanderaa In-line ZPulse Doppler Current Sensor

The In-line Doppler Current Sensor (DCS) is the first current sensor with the option to directly connect water quality sensors in a robust, integrated package. The sensor replaces the successful DCS4100 in-line current sensor using newer technology with extending capabilities. It is designed for easy integration into systems with Aanderaa or third-party dataloggers. Based on a modified version of the ZPulse Doppler Current Sensor 4520, it connects through a combined mooring and signal cable.
For buoy application, when the buoy creates magnetic interferences with the internal sensor compass, it is possible to use an external compass solution.

  • Features
  • Specifications

Available configuration settings include: polled / nonpolled mode, ping rate, recording interval and settings
for connected sensors for the 5810.

5800 / 5810 / 5800R / 5800RR / 5810E

  • Rugged and reliable sensor with high accuracy
  • Build in solid state 3-axis tilt compensated compass
  • Heading and tilt compensated for each ping
  • Low power consumption


Working Principle
The DCS sensor is based on the backscatter acoustic Doppler principle. It has two orthogonal transducer axes with two transducers on each axis. This enables the sensor to measure in both directions on each axis which is a great advantage. By utilizing only the two tranducers that are facing upstream, the sensor is insensitive to disturbance from vortex speeds around the mooring and the sensor itself (forward ping functionality). One transducer on each axis transmits a short ultrasonic pulse simultaneously (one ping), the same transducers receive backscattered signals from particles in the water. This gives an orthogonal x and y speed component which is tilt compensated to find the correct horizontal speed components.

The North and East speed components are calculated based on the x and y speed components and the heading from the built-in solid state electronic compass. The sensor takes several of these two-component measurements and finally calculates the averaged north and east speed components and the vector averaged absolute speed and direction.

The two-frequency ZPulse technology provides higher precision data from each ping. This gain can be used either to obtain improved measurement precision or to reduce the average power consumption by halving the number of required pings. The 5800/5810 models can be configured using the provided Aanderaa Real Time Collector software either directly connected to a computer or through SmartGuard or SeaGuard Datalogger. The Real Time Collector is a powerful and efficient tool for data collection and control of Aanderaa’s oceanographic insruments and sensors.

Data logged by use of the SeaGuard Datalogger can be post-processed using SeaGuard Studio software, while data from SmartGuard can be view and exported by use of the Data Studio software. The Geoview software package is available for customized visualization fo real-time data.

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