Overview
UviLux sensors
UviLux sensors enable real-time, in situ detection of a wide variety of UV fluorescence parameters, including: Polycyclic Aromatic Hydrocarbons (PAH), BTEX, CDOM, Tryptophan-like fluorescence (TLF), BOD and Optical Brightening Agents (OBA).
The compact and highly sensitive fluorometers have excellent turbidity rejection and high ambient light rejection, making them suitable for use in water and wastewater treatment works, as well as natural waters at the surface and to depths of up to 1000 m.
Specifications
UviLux sensor technical specification
| Parameters | PAH fuel | PAH | CDOM (crude) |
| Sensitivity (QSU) | 0.06 | 0.03 | 0.03 |
| Calibrated range (QSU) | 600 | 600 | 600 |
| Example compound: sensitivity range (ppb) |
BTEX*: 3.0 – 50,000 | Carbazole: 0.005 – 80 Phenanthrene: 0.010 – 150 |
Perylene: 0.003 – 50 |
| Parameters | Tryptophan | CDOM | |
| Sensitivity (QSU) | 0.01 | 0.01 | |
| Calibrated range (QSU) | 600 | 600 | |
| Example compound:sensitivity range (ppb) | Tryptophan: 0.02 – 1200 BOD: 0.001 – 50 mg/L |
PTSA:***0.02 – 900 |
*BTEX is Benzene, Toluene, Ethylbenzene, p-Xylene, m-Xylene, o-Xylene at equal ppb concentrations
**NDSA is naphthalene disulphonic acid
***PTSA is pyrene tetrasulphonic acid
Mechanical
| Size | Ø 70 mm x 149 mm |
| Weight in air | 800 g in air / 150 g in water |
| Pressure housing | Acetal C |
| Operating temperature | -2 °C to + 40 °C |
| Storage temperature | -40 °C to + 70 °C |
| Depth rating | 1000 m |
| Connector | Impulse MCBH6MP |
Electrical
| Input voltage | 9 – 36 V |
| Power requirements | < 1 Watt @ 12 V |
The sensitivity and calibrated range of each UViLux Tryptophan sensor has been standardised by cross-correlating each calibration solution against a certified reference standard of quinine sulphate using a bench-top spectrofluorometer. Fluorescence is reported in Quinine Sulphate Units (QSU), where 1 QSU is equivalent to the fluorescence intensity recorded from 1 ppb quinine sulphate at an excitation wavelength of 347.5 nm and an emission wavelength of 450 nm. Factors are provided for selected compounds to convert the fluorescence output from QSU to ppb of the compound of interest
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