UV AquaTracka Fluorometer for real-time sensitive, in situ detection of crude or refined hydrocarbons or CDOM

UV AquaTracka Fluorometer for hydrocarbon detection in waterChelsea Technologies Group’sUV AquaTracka is a submersible fluorometer to monitor the concentration of refined hydrocarbons  or crude hydrocarbons in a wide range of oceanographic applications. In support of this, it has been designed to be deployed from gliders, undulating vehicles, moored or profiling systems. 

 

UV AquaTracka detects UV fluorescence. When dissolved compounds that are of a fluorescent nature absorb UV light they re-emit a fraction of this energy as fluorescence at longer wavelengths. Fluorescence intensity is directly proportional to concentration. The technique is widely recognised as one of the most sensitive detection methods available.

 

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Applications

  • In situ crude & refined hydrocarbon detection / monitoring
  • Water mass indicator studies (CDOM)
  • Pollution monitoring
  • Environmental and water quality monitoring
  • Bio-geo chemical oceanography
  • Pipeline / control line leak detection

Features

  • High sensitivity
  • Long term calibration stability
  • High ambient light rejection
  • Wide range of detection
  • Robust titanium pressure housing
  • Analogue or digital outputs available
  • 6000 metre depth rating

How does it work?

CTG’s UV AquaTracka detects UV fluorescence. When dissolved, compounds that are of a fluorescent nature, absorb UV light they re-emit a fraction of this energy as fluorescence at longer wavelengths. Fluorescence intensity is directly proportional to concentration. The technique is widely recognised as one of the most sensitive detection methods available.  A low power rugged pulsed xenon light source is used in conjunction with a photomultiplier detector and a reference channel monitoring the intensity of each flash, providing excellent calibration stability over long time intervals.

Configurations

UV AquaTracka is available to output either an analogue logarithmic signal (4 decade) or alternatively, a digital signal which can either be RS232 or RS422. This flexibility of data output allows ease of integration to a variety of platforms including host CTD profilers, ROVs and towed vehicle systems. An on-board temperature sensor is offered as an option for the 600 metre rated UV AquaTracka which allows for correction of the fluorescence signal quantum yield variation with temperature.

Specification

Parameter  Hydrocarbon (refined) Hydrocarbon (crude) CDOM (Gelbstoffe)
Sensitivity  0.001 µg/l Carbazole 0.001 µg/l Perylene 0.001 µg/l Perylene
Calibrated range 0.001-10µg/l Carbazole 0.001-10µg/l Perylene 0.001-10µg/l Perylene

Interfaces Digital Analogue
Standard RS232 or RS422 0 – 4V dc 4 decade log

Input voltage 10.5 - 72V
Power requirement < 3 watts nominal
Operating temperature -2°C to +40°C
Storage temperature -40°C to +70°C
Depth rating 600 m or 6000 m
Size Ø 88 mm x405 mm
Housing material Titanium
Weight 5.5kg in air / 3.5kg in water
Connector

Analogue: BH-4-MP
Digital: MCBH-6-MP
Options available on request

 

Temperature sensor - Optional (600 m rated version only)

Range -2°C to+32°C
Accuracy 0.01°C
Resolution 10°C / V Analogue

 

Options: Flow-through manifold, deck units, calibration equipment, software for data acquisition, processing and display.

In view of our continual improvement, the designs and specifications of our products may vary from those described.

Download

Want to know more?
Download the UV AquaTracka Datasheet
 

UV AquaTracka in the Press

Natural Hydrocarbon Seepage on the Continental Slope to the East of Mississippi Canyon in the Northern Gulf of Mexico, Asrarur Rahman Takukder, Andrew Ross, Emma Crooke, Charlotte Stalvies, Christine Trefry, Xiubin Qi,  David Fuentes, Stephane Armand (CSIRO CESRE), Andrew Revill (CSIRO - CMAR), Vol 14, No 6, 17 June 2013, Geochemistry Geophysics Geosystems. Published by AGU and Geochemical Society.