Chelsea Technologies Group (CTG) specialises in the design and manufacture of a range of sensors & systems for the marine, environmental, defence, homeland security & industrial process control markets.
UK based Chelsea Technologies Group specialises in the production of a range of innovative multi-parameter sensors & systems for monitoring the physical, optical & biological oceanographic and fresh water environment. Parameters include temperature, conductivity, depth, chlorophyll, turbidity, transmission, fluorescence & bioluminescence.
Fastwave integrates Chelsea sensors & systems with data acquisition to provide real-time data capability for time critical applications industries such as: maritime, marine science, water environmental, defence & process control markets.
Marine Science → | Water Environmental → | Defence → | Process Control → |
Compliance Monitors for Exhaust Gas Scrubber Systems & Treated Ballast Water |
Innovative oceanographic multi-parameter sensors & systems |
High performance sensor solutions to the Environmental Monitoring & Water Utility sectors |
Range of naval environmental monitoring systems |
Sensors for monitoring & control of industrial processes |
The highly reliable Chelsea Sub-Sea Pipeline Leak Detection System has an impressive track record of providing a quick and cost-effective method of detecting leaks for the oil and gas industries. The system finds leaks in sub-sea pipelines by sensing the fluorescence signal of leaking dye introduced during pipeline commissioning.
Systems can also be provided to detect leaking hydrocarbons in operating pipelines, and for detecting leaks in control lines. The systems are designed to be easily fitted to an ROV for rapid deployment, and can also be supplied as a handheld system for diver operations. Systems are also in use on the new Liquid Robotics gliders.
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The UV AquaTracka is a submersible fluorometer to monitor the concentration of refined hydrocarbons (360nm) or crude hydrocarbons (440nm) 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. The instrument is rated to 6000m and has an optional ambient light baffling cowl for use in surface waters.
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The UviLux is a family of sensitive, low cost, digital in-situ UV fluorometers designed for real-time monitoring of concentrations of refined amp; crude hydrocarbons, Coloured Dissolved Organic Matter (CDOM) and Tryptophan, a surrogate marker for Biological Oxygen Demand (BOD), optical brighteners and bacterial contamination in waste, recycled and natural water supplies.
UV Fluorometer for the real-time detection of:
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V-Lux is a miniature multi-parameter fluorometer configured to provide high quality in situ detection of either Algae, Aromatic Hydrocarbons or Tryptophan like fluorescence. Fluorescence is automatically corrected for turbidity, absorbance and temperature to provide robust data collection over extended deployments.
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The UniLux is a single parameter fluorometer 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.
Available parameters:
The CTG Lux Fluorometers, like the UniLux, can use the "Watchkeeper" as a logging and display solution for Water, Environmental & Industrial applications.
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Chelsea Technologies Group manufacture and supply a wide range of in-water sensors that are applied to both process control and environmental monitoring. The following details the systems and applications that the CTG range of sensors can be applied to within the water supply and recovery industry. These systems use fluorescence detection techniques which offer very high sensitivities, and comprise of both portable and online solutions.
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The BOD-Station and BOD-Wader systems enable in-line or in situ real-time reporting of Biological Oxygen Demand within both water processing plants and natural water systems. The monitor detects fluorescent proteins that are found within sewage and slurry. The principle behind the measurement is the excitation of Tryptophan-like fluorescence at UV wavelengths, which is highly sensitive and has been shown to correlate with Biological Oxygen Demand. These systems can inform on how the bacterial removal systems within a Waste Water Treatment Works are performing.
The ALGAE-Wader and ALGAE-Station systems enable in-line or in situ real-time reporting of Algae within both water processing plants and natural water systems. The detection of Chlorophyll a in stored water systems such as reservoirs assists in 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 fluorometer systems can detect cyanobacterias, such as Phycocyanin and Phycoerythrin, which may be associated with toxic algae groups. Knowledge of concentrations of algae within the water can assist in assessing Geosmin formation and determining the loading into water processing plants, informing on taste and odour issues.
The OIL-Station and OIL-Wader Systems enable in situ, real-time reporting of Polycyclic Aromatic Hydrocarbon (PAH) within Waste Water Treatment Plants. The principle behind the measurement is the excitation of PAH fluorescence at UV wavelengths, which has been shown to correlate with PAH contamination with high sensitivity. These systems can inform levels of PAH entering into waste water treatment works.
The BACTI-Wader and BACTI-Station systems enable in-line or in situ real-time reporting of Bacteria within both water processing plants and natural water systems. The monitor detects fluorescent proteins that are found within sewage and slurry. The principle behind the measurement is the excitation of Tryptophan-like fluorescence at UV wavelengths, which is highly sensitive and has been shown to correlate with bacterial contamination. These systems can inform on plant loading of bacteria from river abstraction, filter management and contamination within processed water tanks.
The CTG TurbiLux Station enables in-line, real-time reporting of Turbidity within Waste Water Treatment Plants. Two alternative sensors are available for use within the Turbidity-Station, one based on back-scatter (UniLux) and one based on 90o scatter (TurbiLux). The TurbiLux provides turbidity measurements compliant to ISO07027:1999. Monitoring of turbidity allows operators to assess particulate removal through the Waste Water treatment process.
The CDOM-Station system enables in-line, real-time, reporting of Coloured Dissolved Organic Material (CDOM) within both water processing plants and natural water systems. The monitor detects Fluorescent Dissolved Organic Matter (FDOM) providing highly sensitive CDOM measurements that have been shown to correlate with organics within the water. These systems can inform on assessing organic load through a works, managing disinfection by-product formation potential, coagulation control and filter management.
Dye tracing operations are common in determining water retention and flow in newly commissioned or modified Waste Water Treatment Works. CTG can offer portable systems based on the UniLux in situ fluorometer configured to measure common dyes used in dye tracing such as Rhodamine WT or Fluorescein. The high sensitivity obtained from these sensors allows for minimum volumes and/or concentrations of these chemicals to be introduced to the plant. These can be supplied with the CTG Hawk portable handheld data display and logger.
The OIL-Station and OIL-Wader Systems enable in situ, real-time reporting of Polycyclic Aromatic Hydrocarbon (PAH) within both water processing plants and natural water systems. The principle behind the measurement is the excitation of PAJ fluorescence at UV wavelengths, which has been shown to correlate with hydrocarbon contamination with high sensitivity. These systems can inform on PAH content at abstraction points and PAH contamination into processed waters tanks.
The CTG TurbiLux Station enables in-line, real-time, reporting of Turbidity within both water processing plants and natural water systems. Two alternative sensors are available for use within the Turbidity-Station, one based on back-scatter (UniLux) and one based on 90o scatter (TurbiLux). The TurbiLux provides turbidity measurements compliant to ISO07027:1999. Monitoring turbidity allows operators to assess loading into a plant as well as monitoring the efficiency of filters for particulate removal through the process.
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