Meet the innovators in underwater sensor technology.

The proliferation of Aquaculture, the importance of Water Quality and Environmental Monitoring have been driving innovation in ocean instrumentation.

These three suppliers have developed highly reliable integrated systems.

Turbidity Logger and AQUAscat®

NKE Instrumentation Logo

Multiparameter Probes, Underwater Loggers, Specific Pararmeters

Impact Subsea Logo

Underwater Altimeter and Echosounder & Depth and Temperature Sensors

Turbidity LoggerAQUAlogger® 310TY

The AQUAlogger® 310TY is a compact instrument that measures turbidity to 10,000FTU (typical), with optional integral temperature and pressure sensors. The logger also features a tool to convert turbidity to suspended sediment concentration using in situ samples. It can be used in freshwater and ocean environments, with models for shallow and deep water.

Key Features

  • Measure turbidity to >10,000FTU

    AQUAlogger® 310TY

    AQUAlogger® 310TY

  • Convert turbidity to suspended sediment concentration with the SSC Converter tool
  • Optional automatic wipers to minimise the impact of biofouling
  • Quick start by swiping a magnet against the logger
  • Shake the logger to check the status
  • Flexible sampling – options for continuous and sampling, delayed start, variable sample rates, intermittent logging and averaging


  • Water quality monitoring in rivers and lakes
  • Dredge Monitoring
  • Hydropower monitoring

AQUAscat® 1000

The AQUAscat® 1000 family incorporates a range of high-frequency acoustic instrumentation. It has applications in sediment transport studies, including measurement of suspended sediment profiles, precision altimetry, dredge plumes and turbulence.

Aquascat 1000R

AQUAscat 1000R

The AQUAscat 1000R research model is supplied with 4 cabled transducers, and a temperature and pressure sensor as standard. An additional transducer can be purchased. The standard instrument can be used to 1000m depth, with custom instruments available for greater depths. The AQUAscat 1000R can observe profiles of up to 10m.

Aquascat 100S

AQUAscat 1000S

The AQUAscat 1000S survey model is supplied with 4 fixed transducers, and a temperature and pressure sensor as standard. The standard instrument can be used to 1000m depth, with custom instruments available for greater depths. The AQUAscat 1000S is simple to deploy and operate, and can observe profiles of up to 10m.
Aquascat 1000LT

AQUAscat 1000LT

The AQUAscat 1000LT lite model is supplied with 2 fixed transducers. The instrument can be used to 200m depth, making it ideal for shallow water deployment. The AQUAscat 1000LT can observe profiles of up to 2.5m.

AQUAscat lab

AQUAscat 1000L

The AQUAscat 1000L laboratory model is supplied with 3 cabled transducers, with the option to purchase an additional transducer. The instrument housing is designed for bench use – only the transducers can be submerged. The AQUAscat 1000L can observe profiles of up to 10m.

NKE Instrumentation Logo

WiSens Data Logger

WiSens Data logger by NKE Instrumentation

Data Loggers: The WiSens range

These autonomous data loggers offer a very high ease of use thanks to the Wi-Fi, fully integrated in the WiSens using a simple on/off switch.
WiSens Do measures and records dissolved oxygen, pressure and temperature in coastal waters.

  • Easy to use
  • Fast wireless cofiguration and data collection
  • Light and compact
  • Rugged and reliable
  • Lithium long-lasting batteries (several months)

Multiparameters Sondes: The WiMo

The WiMo sonde allows you to measure up to 20 parameters thanks to its smart sensors suite that benefit from real plug and play and automatic recognition as you can connect and disconnect the smart and digital sensors even with functioning sonde.

  • WiMo Multiparameter Sonde

    WiMo Multiparameter sonde from NKE.

    WiFi link compliant all platforms (Windows, Mac, IOS, Androïd)

  • Automatic sensor recognition (Plug and Play)
  • Smart wiper management (automatic recognition of sensors)
  • Integrated Modbus protocol functionalities
  • Datalogger storage in Flash memory or SD card
  • Downloaded data by serial link or WiFi
  • Automatic data transmission module recognition

Profiling Floats

nke Instrumentation has extensive experience in the design and the manufacturing equipment useful for oceanographers’ studies of the evolution of oceans and climate. The company benefits from a technical team specialized in the development of profiling floats and allows NKE Instrumentation to offer to its customers various types of floats.

Profiling Float by NKE PROVOR

The PROVOR CTS5 Profiling Float by NKE

  • Standard profiling floats (ARVOR and PROVOR)
  • Bio & specific profiling floats
  • High & low depth profiling floats

BGC-ARGO compliant for R&D and demanding applications.
The PROVOR CTS5 -with camera- design is based on the ARGO PROVOR CTS4 float to integrate additional sensors to the standard CTD. These are optical sensors from Satlantics, WetLabs or Aanderaa.

Impact Subsea Logo

Underwater Altimeter and Echosounder & Depth and Temperature Sensors


  • 120+ Meter Range
    Millimeter Accuracy
    Optional Sonar Backscatter
    Optional Heading, Pitch & Roll
    Software to View, Log & Configure
    Digital & Analogue Interfaces
    Robust & Compact Housing
    Emulate Any Device
    Multi Echo Output

The ISA500 underwater AUV & ROV Altimeter & Echosounder provides exceptionally long range measurement capability – in excess of 120 meters.

In addition to providing exceptionally long range capability, the sensor has a 1mm accuracy – allowing precision underwater distance measurements to be made.

Optionally, the ISA500 can also be provided with an integrated Attitude and Heading Reference System (AHRS). This provides highly stable Heading, Pitch and Roll readings.

Another optional capability is ECHOGRAM, providing sonar backscatter data for each ping.


0.01% FS Depth Accuracy, Optional 0.005% FS
0.1°C Temperature Accuracy, Optional 0.05°C
Optional Heading, Pitch & Roll
Software to View, Log & Configure
Robust & Compact Housing
Emulate Any Device
Digital Interfaces
Survey Grade

The ISD4000 is a compact, survey grade Depth & Temperature Sensor.

Optionally, the unit can also be provided with an integrated Attitude and Heading Reference System (AHRS). This provides highly stable Heading, Pitch and Roll readings.

Full Range of Products Impact Subsea

Chelsea Logo

VLux AlgaePro

VLux AlgaePro is the latest advancement in in situ fluorometers from Chelsea Technologies, measuring 4 algal groups with integrated environmental corrections for absorbance and turbidity in one compact sensor. The absorbance measurements also provide a correction for CDOM interference and increase dynamic range by a factor of 20x.

VLux Algae Pro Fluorometer for Aquaculture

VLux AlgaePro by Chelsea Technologies


  • Harmful algal bloom monitoring
  • Finfish and shellfish aquaculture
  • Bathing waters
  • Algal bloom monitoring
  • Catchment monitoring
  • Environmental health
  • Water treatment
  • Industrial monitoring of algae
  • Identification of contamination in bottled water production
  • Algae population assessment in bioreactors
  • Research into primary productivity and algal population characterisation

A full range of fluorometers include the VLux (algae, Tryptophan, Fuel, Oil), the TriLux, UniLux and UvLux series.

What is LabSTAF?

  • LabSTAF active fluorometer

    LabSTAF active fluorometer by Chelsea Technologies

    Monitoring phytoplankton primary productivity using the latest in STAF technology

  • Unparalleled sensitivity allowing measurements in extreme oligotrophic waters
  • Wide dynamic range providing reliable measurements from open ocean, coastal waters and lakes
  • Fully automated acquisition allows for continuous measurements without manual intervention
  • Compact and robust portable unit – ideal for deployment on research vessels and outdoor locations
  • Automated sample exchange and system cleaning for extended autonomous operation

Why LabSTAF?

  • Advanced corrections as standard
  • Seven waveband excitation for spectral correction of photosynthetic measurements and assessment of community structure
  • Dual fluorescence waveband measurement to compensate for the reabsorption of chlorophyll fluorescence through the package effect
  • Baseline subtraction to exclude fluorescence signal from non-photosynthetic sources

PAR Sensor

Gather highly sensitive data on light irradiance with the Chelsea PAR sensor. With a depth rating of 1000 m, the PAR sensor can be fitted to profiling systems or oceanographic moorings to get a complete picture of the photic zone. The long term calibration stability and titanium corrosion-resistant housing make it ideal for long term deployments on vehicles or wider instrumentation systems in all water environments.

PAR Sensor

PAR Sensor


  • High sensitivity
  • Long term calibration stability
  • Logarithmic 6 Decade range
  • Wide angular detection range
  • 1000 m depth rating
  • Corrosion resistant housing


  • Sea-truthing of satellite data
  • Oceanographic and environmental studies
  • Referencing primary productivity measurements
  • Referencing in situ fluorometer measurements