The new Chelsea FastFlow Fast Repetition Rate fluorometer has been designed to monitor in real-time the ‘health’ of algae and is ideally suited for toxicant detection and bloom prediction. It gives the best indication of the water quality and can give early warning of toxic blooms.
The FastFlow fluorometer utilises the active chlorophyll a fluorescence from water-borne algae and provides a non-destructive and minimally intrusive method of probing oxygenic photosynthesis. It provides an immediate detection of a wide range of contaminants that attack the photosynthetic process. It is typically used to monitor pre-treated water supplies in pumping stations.
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- Applications and Features
- Water supply contamination
- Early warning of algae growth
- Algae class assessment and monitoring
- Industrial cooling water management
- Water abstraction management
- Filter bed protection
- Real time water asset management system
- Robust automated alarms for water contamination
- Full function Graphic User Interface (FastPro3) for sensor programming,
data presentation, archiving and real time analysis
- Anti-fouling flow head
- Low maintenance
- High turbidity tolerance
- RS422 and USB interface
Security of water assets is becoming an increasingly major issue that demands immediate and robust alarms for potential contamination. In addition to this, natural growth of algae is an increasingly common problem for water asset managers, the results of which can increase maintenance costs of water processing plants as well as directly effecting water taste.
Data obtained from the Chelsea Technologies Group FastFlow can address both these issues within the one sensor. By probing the efficiency of photosynthesis of the algae, signals can be obtained that directly relate to growth potential and also provide indications of damage to the algae by contaminants effecting the photosynthetic process. The Fast Repetition Rate fluorimetry (FRRf) technique used allows accurate measurements to be made even whilst the sample is moving past the sensor head. Early warning of algae growth, potentially resulting in a bloom, allows the asset manager to assess options on how to minimise subsequent impact to a processing plant.
Parameters provided are listed below, which provide detailed information on the physiological state of algae within the water. This data is analysed in real time via the FastPro3 software which provides a single alarm for water contamination detected. Further alarms can be set for rapid increases of the following parameters, providing alarms in situations of rapid algae growth. The FastFlow fluorometer enables users to interrogate different algal groups including diatoms, cyanbacteria and green algae.
A full range of fluorescence parameters is calculated in real time, including: Fo ('origin' of variable fluorescence in the dark-adapted state) Fm (maximum fluorescence in the dark-adapted state) Fv/Fm (maximum PS II photochemical efficiency) σPSII (absorption cross section of PS II photochemistry) p (connectivity parameter) [Chl] (chlorophyll concentration) If an ST measurement includes a relaxation phase, the following additional parameters
are calculated in real time:
tf (time constant for PS II centre re-opening) Fa (fluorescence at the asymptote of the relaxation phase)
Range: 0 to 400 mg m-3 External dimensions: 300 mm x 88 mm (ex connectors) Weight: 2.7kg Power requirements: 18 to 36 V DC – protected to 72 V; 500 mA at 24 V Data: RS422 and USB Operating temperature: 0 to 50°C Flow line pressure: Up to 2 bar (depending on application)