ADCPs - Acoustic Doppler Current Profilers

SEAGUARD RCM

The SeaGuard current meters are multiparameter platforms with vast possibilities to measure currents, waves, and water quality

The SEAGUARD® is the core module used in small and medium sized underwater observatories.

Aanderaa Data Instruments

Bergen, NO

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Description

Whether used as a multipurpose instrument, or as a hub for strings in the water column, the SeaGuard manages connected sensors and the real-time communication of data and meta-data to shore. In autonomous configurations, long battery life is achieved with aggressive power routines keeping the full system at the lowest power levels possible.

The most common version includes the patented Z-pulse current meter and referred to as SeaGuard RCM. It is used in thousands of deployments ranging from ocean research, to aquaculture, ports and offshore energy.

Tools for visualizing and analyzing data is included with the SeaGuard RCM, and all instruments are delivered with the Real-time collector software to configure directly or remote and control the data-flow from the instrument.

Seaguard RCM Advantages:

Long deployment time in autonomous operations
Large storage capacity on removable SD card
Sensor bus for string systems
Up to 4 Analog sensor input (0-5V)
Serial input from sensors from other manufacturers
Broadband ZPulse® multi-frequency technology reduces power consumption and improves quality
300 m, 3000 m and 6000 meter versions

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Specifications

General: Year of last update

2023

Width [m]

0.139

Height [m]

0.356

Weight in air [kg]

7.6

Weight in water [kg]

2

Min. operating power [V]

6

Max. operating power [V]

14

Max. operating depth [m]

10000

Max. battery lifetime [days]

1095

True Bottom Tracking Capability

N

Other specifications: Real-time interfacing

XML / RS232 / RS422

Min. external power [Voltage]

6

Max. external power [Voltage]

14

Baudrate [kbit/s]

115200

External battery container

Y

Data acquisition software and processing software

Real Time Collector / SeaGuard Studio

Auxiliary Sensors: Conductivity

Y

Oxygen

Y

Turbidity

Y

Tides

Y

Waves

Y

Pressure

Y

Acoustic modem

Y

Relocation of transponder

Y

Wave direction

N

Deployment method: Moving vessel

N

Bottom mount

Y

Inline string mooring

Y

Data Buoy

Y

Marine structures

Y

Doppler Current Profiler: Center working frequency [kHz]

1900 and 2000

Number of beams

4

Nadir angle [deg]

90

Max. Number of cells per beam

1

Min. blanking distance [m]

0.4

Lost data at far boundary [%]

0

Max. ping rate [Hz]

25

Min. cell size [m]

1.5

Max. cell size [m]

2.5

Max. velocity [m/s]

3

Speed dependent uncertainty: horizontal [%]

1

Speed independent uncertainty: horizontal [cm/s]

0.15

Surface reference capability

N

Compensation for sound speed

Y

Single ping rejection of outliers

Y

Uncertainty of single ping horizontal velocity for default cell size [cm/sec]

0.3