Oil Detector

Hydrocarbon UV Fluorometer for Polycyclic Aromatic Hydrocarbons

Main Features

  • Resolution 0.01 µg/l, Range I 0-50, 0-500 µg/l naphtalene, Range II 0-500, 0-5000 µg/l naphtalene
  • Serial output: RS232
  • Analog output 0-10 Volt
  • Depth range up to 500 m, optional up to 2000 m
  • Titanium housing
  • Automatic compensation of dropping flash intensity
  • Flash lamp control
  • Daylight suppression
  • Data acquisition software package
  • Low weight 2.7 kg

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Fluorometric methods are widely used in environmental monitoring, analytical chemistry, limnological and oceanographic biology. Online fluorometers allow continuous measurements and nondestructive sampling in combination with high specificity and low detection limits.
In order to meet most requirements, the instrument is light and compact designed and capable to work on the water surface as well as up to 500m (2000m) water depth. It can be powered by 12V or 24V batteries and is suited for portable operation in remote regions as well as for permanent stationary monitoring.
Typical applications include:

  • crude oil detection, leakage control at offshore oil pipelines with remote operated vehicles (ROV)
  • monitoring of organic fluorescent agents (humic acids, amino acids, BTXE and polycyclic aromatic hydrocarbons)
  • supervision and online control of fresh water in waterworks and boreholes
  • monitoring of waste water in industrial and municipal sewage works
  • monitoring of waste water vanes in the region of outlets, spreading and mixing processes in rivers, lakes and estuaries
  • fuel detection in natural waters and sewage plants

In combination with a portable field unit (PC) the user is able to operate a small and handy mains independent system for monitoring aromatic pollutants.

Dimensions and weights

  • L (housing): 220 mm
  • Ø (housing): 88 mm
  • L (overall): 280 mm
  • W (in air): approx. 2,7 kg

Emitter

  • Light source: Xenon flash lamp
  • Repetition rate: 15 / sec
  • Flash duration: approx. 1 µsec
  • Flash energy: 7 mWsec
  • Discharge capacitor: C = 100 nF
  • Discharge voltage: 380 Volt
  • CWL, BW: 254 nm, 25 nm
  • Lamp lifetime: at 254 nm 50 % intensity drop 109 flashes(3 years of continuous operation)

Detector 1 (Flourescence)

  • Detector: UV photodiode
  • CWL: 360 nm
  • BW: 50 nm
  • PAH: naphthalene, acenaphthene, phenanthrene, chrysenepyrene, anthracene, benzo(a)

Detector 2 (Flash intensity)

  • Detector: UV photodiode
  • CWL: 254 nm
  • BW: 25 nm

Electronics

  • Supply voltage: 9 – 36 Volt
  • Current consumption: 180 mA (12 V), 100 mA (24 V), 70 mA (36 V)
  • Signal output: 0 – 10 Volt DC
  • Serial output: RS-232, 1200, o, 8, 1 (optional)
  • Response time: 500 msec
  • U out 1: high range fluorescence
  • U out 2: low range fluorescence
  • U out 3: flash intensity
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