UniLux - Single Parameter Fluorometer for Algae Monitoring

The UniLux is a single parameter fluorimeter which can detect one of Chlorophyll a, Phycocyanin, Phycoerythrin for algae monitoring and Rhodamine or fluorescein for dye tracing applications. It is also available as a nephelometer for turbidity monitoring.

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UniLux Single Parameter Fluorometer for Algae Monitoring ...

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The innovative UniLux range of digital in-situ fluorimeters provides the user with increased functionality when compared to other fluorimeters currently available on the market. CTG has used expertise gained within its Life Science Group that have resulted in a significant reduction in production costs, providing the marine, fresh water, surveying and process control markets with a low cost, high performance sensor. Users can select from a wide range of fluorescent parameters, specifying the UniLux tailored to their specific monitoring requirements.

Two signals can be obtained from the standard UniLux: the first is a digital RS232 output in engineering units, the second a 0V to 5V volt calibrated analogue output derived from the digital signal. A single RS422 output is also available as an option. This flexibility makes the UniLux suitable for integrating into many different systems and platforms.

A Windows based Graphical User Interface (GUI) is provided that allows the user to both plot and record time stamped data when operating the UniLux directly from a PC and gives control over many instrument parameters, including: sampling rate, calibration factors and dynamic range.

The dynamic range of the UniLux can be adjusted simply by varying the LED intensity using the GUI, while still maintaining the factory set calibration via the internal referencing of LED output.

Although small and low cost, the UniLux fluorimeter maintains the performance standards and build quality previously seen in the CTG’s range of in-situ fluorimeters.

Available Parameters

Chlorophyll a
Fluoroscein
Rhodamine WT
Phycoerythrin Cyanobacteria
Phycocyanin Cyanobacteria
Turbidity

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Applications

In-situ chlorophyll & algae class studies
Environment monitoring
Dye tracing
Particulate studies
Process control
Moored, profiled, towed or ROV / AUV platforms

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Features

Miniature, low cost single wavelength fluorimeter
Range of wavelength available
Digital output in engineering units
Additional analogue output as standard
User selectable sampling rate, 0.1Hz - 3Hz
Low power consumption
Internal referencing of excitation intensity
Rejection of ambient daylight
Low noise, high sensitivity
Low turbidity breakthrough
User adjustable dynamic range
RS232 & analogue output (or RS422 option)

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APPLICATIONS

Monitoring of Algae in Drinking Water - Water & Wastewater

The UniLux in-situ fluorometer can be configured to detect a number of key parameters that are of importance to the Water Supply Industry. Primarily, the detection of Chlorophyll a in stored water systems, such as reservoirs, assists in the planning and informs decisions on water abstraction in relation to natural algae blooms that regularly occur throughout the year. As well as Chlorophyll a, these in-situ fluorometers can detect cyanobacterias, such as Phycocyanin and Phycoerythrin, which are often associated with algae groups of a toxic nature. Knowledge of concentrations of algae within the water can assist in determining the loading into water processing plants.

These in-situ fluorometers are available as single parameter sensors (UniLux), or 3 channel sensors (TriLux).The CTG FastFlow fast repetition rate fluorometer provides information on the physiological state of algae it monitors. As well as providing detailed information on the growth rate of the algae (which can indicate the occurrence of a future algae bloom), it can immediately inform and alarm on toxins that have accidentally or deliberately been introduced into the water systems, as with the FastGuard system. The FastFlow differs from the FastGuard system in that it logs and displays detailed information on the state of the algae monitored for operational requirements.
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