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Sensors & systems for freshwater and oceanographic monitoring Chelsea Technologies Group manufactures a range of innovative multi-parameter sensors & systems for monitoring the physical, optical & biological oceanographic & fresh water environments. Sensors are available for in-situ chlorophyll & algae class studies, dye tracing, oil spill monitoring, airport apron pollution runoff studies, water abstraction management and effluent detection as well as primary productivity studies, bloom detection, toxicant detection within domestic water supplies and early detection of contamination events in potable and pre-treated water protection. With nearly 50 years' experience in sensors and systems design, Chelsea's products are used in a diverse range of applications in the marine, environmental, defence, homeland security, industrial process control and life science markets. Contact Justin Dunning (sales@chelsea.co.uk, Tel: +44(0)20 8481 9000) today and let me him help you with your particular application.


Mr Justin Dunning
55 Central Avenue

West Molesey

Chelsea's UniLux dye tracing fluorimeter used in effluent dispersal study in Darwin Harbour

Internationally recognized expert and Charles Darwin University's Professor of Civil Engineering, Eric Valentine is leading a research project tracking the flow of waste from sewerage outlets as part of a modelling study for a new outfall into Darwin Harbour.

Professor Valentine chose the Chelsea UniLux fluorimeter to conduct Rhodamine WT dye tracing studies in the area. Professor Valentine's team discharged quantities of Rhodamine WT dye and a second tracer, radio-isotope, Technetium 99m into the seawater to determine where the tide carries waste water pumped into the harbour.

The UniLux fluorimeter along with other sensors were attached to an aluminium frame and profiled behind a small diving boat. The boat did transects through the dye plume and measured the concentrations of the dye at a variety of GPS-mapped locations over a number of hours. Real-time information was provided directly from the UniLux to a laptop on the boat.

Ruth Patterson, Research Fellow at Charles Darwin University said, "We were very grateful to Chelsea for supplying the UniLux fluorimeter at such short notice. The data will now be used to validate the hydrodynamic and water quality model and determine better waste water management in Darwin Harbour".

Justin Dunning will be demonstrating Chelsea's range of miniature, multi-wavelength Lux fluorimeters on board RV Callista during Ocean Business. So, if you'd like to see the fluorimeter in action please contact Ellen Keegan to reserve a place.

For more information or to book your place on the in-water demonstration at Ocean Business, please contact Ellen Keegan
email: ekeegan@chelsea.co.uk
tel: (0)20 8481 9019
or visit Ocean Business 2011 at www.chelsea.co.uk/OceanBusiness2011.htm

For more information on the Darwin Harbour project please contact Ruth Patterson
email: ruth.patterson@cdu.edu.au
tel: +61 8 8946 7284
Charles Darwin University

For further information please email Chelsea Technologies Group Ltd

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