Chelsea Technologies Group (CTG) - Sensor Technology

Fastwave is Chelsea Technology Group Australian Distributor

 

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.

Products

Multi-parameter Sensors & Systems

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.

Green Shipping →

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

 

Applications for Chelsea's sensor systems include:

  • Sub-Sea Pipeline Leak Detection
  • Hydrocarbon detection around drilling rigs & sub-sea pipelines
  • Oil spill monitoring
  • Coastal pollution monitoring
  • Sea state forecasting
  • Ballast water treatment monitoring systems
  • Water monitors for vessel exhaust cleaning systems

Sub-Sea Pipeline Leak Detection System

 

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.

Applications

  • Detection of leaks in pipelines and sub-sea installations
  • Leak detection using many fluorescein and Rhodamine fluorescence based products
  • Direct hydrocarbon detection
  • In-situ oil in water monitoring
  • Hydrothermal vent studies

Features

  • Rapid mobilisation world-wide
  • Complete turnkey system with data visualisation software
  • High fluorescence sensitivity and good background rejection give excellent sensitivity
  • Good long term calibration stability
  • Low power consumption
  • Operationally robust
  • Systems deployable from ROVs, profiled, towed or diver held
  • Simplicity of integration and use
  • Systems operational to full ocean depths
  • Wide range of products detected
  • More than 25 years proven track record

Product Literature

 

Product Manual

 

Manufacturer

Chelsea Technology Group
 

Additional Links

Video

Product Images

UV AquaTracka Fluorometer

 

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.

Applications

  • In-situ hydrocarbon detection
  • Monitoring of crude & refined oil in water
  • Hydrocarbon detection around drilling rigs
  • Environmental impact assessment
  • Oil spill monitoring
  • Sub-sea pipeline leak detection
  • Pollution monitoring
  • Coastal pollution monitoring
  • Bio-mass indicator studies (CDOM)
  • Biogeochemical oceanography
  • Airport apron pollution runoff

Features

  • Robust miniature PMT
  • High sensitivity
  • Built In Test (BITE) circuitry gives high stability & extended calibration intervals
  • Low power consumption
  • Analogue output
  • Optional temperature probe
  • Optional ambient light baffling cowl

Product Literature

 

Product Manual

 

Manufacturer

Chelsea Technology Group
 

Additional Links

Video

Product Images

Physical Size

  • Length (excluding connector):     406.0 mm
  • Diameter (max. excluding light baffling cowl):     89.0 mm
  • Weight in air: 5.5 kg
  • Weight in water: 3.5 kg
  • Depth rating: 6000 metres

Environmental

  • Operating temperature: -2 deg C to +40 deg C
  • Storage temperature: -40 deg C to +70 deg C
  • Temperature Probe - Optional (600m version only)  
  • Range: -2 deg C to +32 deg C
  • Accuracy: 0.01 deg C
  • Resolution: Analogue 10 deg C/V

Power

  • Input Voltage: 10.5 to 72V d.c. (nom. 220mA at 12V d.c.)
  • Inrush Current: 495mA at 12V d.c. Outputs

Communications

  • Deck units, calibration equipment, software for data acquisition, processing and display.
  • 20 bit ADC micro controller
  • Logarithmic analogue

UviLux Fluorometer

 

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:

  • Refined polyaromatic hydrocarbons
  • Crude hydrocarbons
  • Coloured Dissolved Organic Matter (CDOM)
  • Tryptophan - found in sewage and slurry
  • Optical brighteners
  • Bacterial contamination in waste, recycled & natural water supplies

Applications

  • In-situ polyaromatic hydrocarbon detection
  • Crude and refined oil spill monitoring
  • Hydrocarbon detection around drilling rigs
  • Sub-sea pipeline leak detection
  • Airport apron pollution runoff
  • Coastal pollution monitoring
  • Biogeochemical oceanography
  • Environmental impact assessment
  • Biomass indicator studies (CDOM/Tryptophan)
  • Waste/recycled water quality monitoring
  • Effluent detection
  • Towed, moored or ROV deployments

Features

  • Small, low cost in-situ fluorometer
  • Range of wavelengths available
  • Digital output in engineering units
  • Additional analogue output as standard
  • User selectable sampling rate, 0.1Hz - 3Hz
  • Low power consumption
  • High rejection of ambient daylight
  • Low noise, high sensitivity
  • Low turbidity breakthrough
  • User adjustable dynamic range
  • RS232 & analogue output (or RS422 option)
  • Acetal C housing

Physical Size

  • Size: Ø70mm x 149mm
  • Weight: 800g in Air/150g in Water

Environmental

  • Operating Temperature:-2ºC to + 40ºC
  •  Storage Temperature:-40ºC to + 70ºC

Power

  • Input Voltage: 9 - 36V
  • Power Requirement: <1Watt @ 12V

Communications

  • Digital Output: RS232 or SDI-12
  • Analogue Output: 0.5 – 5V or 4 – 20 mA
  • RS422

V-Lux Multi Parameter Fluorometer

 

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.

Monitoring Applications

  • Environmental pollution
  • Algal monitoring
  • Sewage and bathing waters
  • Oil spill including road and airport apron run-off
  • Point source pollution
  • Biological Oxygen Demand (BOD) indication
  • Coloured Dissolved Organic Matter (CDOM)
  • Exhaust gas scrubber wash water

Features

  • High sensitivity
  • Temperature, Turbidity and Absorbance correction
  • Extended linear dynamic range
  • Turbidity measurement BS 2586 & ISO 7027:1999 compliant
  • Long term calibration stability
  • 6000m depth rating
  • Direct comparison of fluorometer channels via Quinine Sulphate calibration (QSU)
  • Internal logging capability
  • Flexible data output options
  • Integrated biofouling protection
  • Data acquisition software
  • Open data, IoT compatible (Metadata provided)
  • Compatible with CTG’s Hawk and Watchkeeper data logging devices

Product Literature

 

Product Manual

 

Manufacturer

Chelsea Technology Group
 

Additional Links

Video

No video available for this product.

Product Images

Physical Size

  • Size: Ø50mm x 158mm (excluding connector)
  • Weight: 820g in Air

Environmental

  • Operating Temperature:-4ºC to + 55ºC
  • Depth rating: 6000 meters

Power

  • Input Voltage: 9 - 72Vdc
  • Power Requirement: <2 Watt @ 12V

 

Communications

  • Data Output: RS232, RS422, RS485, MODBUS, SDI-12
  • 6-pin Impulse MCBH-6-MP-SS (standard)
  • 8-pin Impulse MCBH-MP-SS (option)

UniLux Fluorometer

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:

  • Chlorophyll fluorometer
  • Fluoroscein fluorometer
  • Rhodamine WT fluorometer
  • Phycoerythrin Cyanobacteria fluorometer
  • Phycocyanin Cyanobacteria fluorometer
  • Turbidity fluorometer

Applications

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

Features

  •  Miniature, low cost single wavelength fluorometer
  •  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
  •   Digital RS232 and analogue output (or RS422, SD1-12 and 4-20mA options)

 

Watchkeeper Logging & Display Unit

The CTG Lux Fluorometers, like the UniLux, can use the "Watchkeeper" as a logging and display solution for Water, Environmental & Industrial applications.

 

Product Literature

 

Product Manual

 

Manufacturer

Chelsea Technology Group
 

Additional Links

Video

No video available for this product.

Product Images

Physical Size

  • Size: Ø 26.5 mm x105 mm (140 mm including connector)
  • Weight: 100g in Air

Environmental

  • Depth rating: 600 meters

Power

  • Input Voltage: 11 to 25 Vdc
  • Power Requirement: <1Watt @ 12V

Communications

  • Digital RS232 and analogue 0 to 5 Vdc (or RS422,SDI-12 and 4-20mA options)

Water Industry Applications: Sensors for Water Supply and Recovery Industries


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.

Download Water Industry Datasheet →

Water Recovery

Water Supply

BOD Monitoring

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.

Algae Monitoring

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.

Oil in Water Monitoring

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.

Bacteria Monitoring

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.

Turbidity Monitoring

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.

CDOM Monitoring

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

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.

Oil in Water Monitoring

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.

 

 

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Turbidity Monitoring

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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