4420/4420R 4520/4520R 4830/4830R 4930/4930R






Shallow Water X X X X X / - / - / X
Intermediate Water X X X5 X5 - / X / - / -
Deep Water X X - / - / - / X
AiCaP1 X / – X / – X / – X / – X / – / – X / – X / X / X / –
RS-232 X / – X / – X / – X / – – / – / X – / X X / X / X / –
RS-4222 – / X – / X – / X – / X – / X / – – / X - / - / – / X
In-line X X
Temperature X X X3
Z-Pulse4 X X X X X X
Profiler X
Single point X X X X X X
Extra sensor connection X

1 The Seaguard platform and the smart sensor are interfaced by means of a reliable CANbus interface (AiCaP), using XML for plug and play capabilities.

2 RS-422 output for use as stand-alone sensor with long cables.

Integrated temperature sensor 4080 in the DCPS calibrated on request

4 ZPulse technology which improves the statistical precision. Complex acoustic pulses comprising several distinct frequencies are combined into a single acoustic pulse. The ZPulse based DCS separates the received signal into different frequency bands, one for each frequency in the transmitted signal. Further it analyses the frequency shift using a high speed Digital Signal Processor using an ARMA based parametric model processing algorithm to find the Doppler shift frequencies. This multi-frequency technique reduces the required number of pings needed in order to achieve an acceptable statistical error. The achieved measurement precision is proportional to the inverse of the square root of the number of ping measurements in a measurement interval. The ZPulse DCS uses two frequencies and this gives a reduction by a factor square root of two compared to a single frequency sensor. A single frequency sensor needs twice the number of ping to achieve the same precision as the Zpulse DCS.

5 Maximum depth range 2000 meter

Data & Specification Sheets

Test Unit 3731

ZPulse® Doppler Current Sensor 4420

Doppler Current Profiler Sensor (DCPS) 5400

In-line DCS

Test Unit 5048


DCS Applications

Sensor systems for oil & gas

In-line Zpulse DCS

Aquaculture flyer: Current sensors — Monitor forces beneath the surface

Kjenn kreftene under overflaten

News & Press Releases


New products and product news June 2015

Product Change Notification

EOL107 In-line DCS

Ocean observatory in Isfjorden Svalbard

Monitoring around World War II munition dump sites

AquaNet—standardized infrastructure for Lake Mesocosm studies

Monitoring Japanese earthquake zones

Newsflash Oceanology International 2018

Glider–Unmanned ocean vehicles: tools for the development of ocean industries

Flexible MOTUS Buoys chosen by major dredging operator

Oxygen Optodes Get Even Better

Monitoring World War II chemical dump sites

Five generations of instruments in service

Water circulation in Wintershine fish tanks

Coral reef monitoring in the Sisters’ Islands Marine Park, Singapore

Application Notes

Koljoefjord observatory Coastal Circulation and Hypoxia

Carbon Capture and Storage

Offshore wind power: Wind Turbine Platforms (Wind-Tu-Pla)

Surface Water Measurements from Mobile Platforms

Water Current Info at Helsingborg Harbour

Pressure sensors in subduction zones

Articles & Papers

Ronne-Filchner ice shelf in Antarctica

Continuous measurements of net production

Optodes in a Ferrybox system

Redfield ratio in real time from buoys

Sensor networks for aquatic environment

Gas tables

Safeport: on-board visualization of hydro-meteorological effects on ferries - Port of Gdynia, Poland

Drilling into the Abyss

Sustainable management of oil polluting wrecks and chemical munitions dump sites

Sailing the Baltic Sea

Best practices — Aanderaa Oxygen Optodes


SEAGUARD® Platform

TD266 ZPULSE DCS 4420-4830-4520-4930

Doppler Current Profiler Sensor, DCPS

Theoretical Primer DCPS

In-line DCS 5800/5810


In-situ monitoring around wrecks and dump sites - Baltic/North Sea

Glider payload sensors

Real-time communication

Safeport: on-board visualization of hydro-meteorological effects on ferries - Port of Gdynia, Poland

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