CTG & Sea Sentry Stephanie Lavelle Maritime Manager Chelsea Technologies Group
Chelsea Technologies Group Oceanographic Fresh water & Application of NAD Exhaust gas Water research coastal sensor monitoring quality/Treatment Tactical monitoring technology Sensors & oceanography Ballast water Bio/chem Security Offshore systems Process control monitoring Acoustic target Environmental pipeline leak & monitoring Acoustic simulation FerryBox detection transducers Medical Water quality diagnostics Fisheries monitoring Agribusiness COMMERCIAL IN CONFIDENCE
CTG fluorometer products • Visible • Algae • Dye tracing • UV • BTEX • Polycyclic Aromatic Hydrocarbons • Tryptophan • CDOM • Optical Brighteners • Active • Photosynthesis • Algal health • Ballast water monitoring COMMERCIAL IN CONFIDENCE
Sea Sentry - integrated cabinet solution COMMERCIAL IN CONFIDENCE
Sea Sentry features Sensors • • Digital pH probes (pre-calibrated) • Turbidity sensor, ISO 7027:1999(E) compliant • Extended range PAH phe eq sensor • Turbidity , ‘colour’ and temperature correction • Integrated sensor validation/calibration protocols • Solid standards for optical sensor validation System • • Integrated pump & de-bubbler • Pneumatic anti-fouling protection • Single board interface electronics • Touchscreen Graphical User Interface COMMERCIAL IN CONFIDENCE
Fluidics pH sensor outlet controller isolation valve pneumatic solenoid valves pressure relief valve pneumatic flow meter regulator turbidity sensor de-aerator PAH phe eq sensor pressure gauge drain valve pH sensor mount pump inlet isolation valve strainer COMMERCIAL IN CONFIDENCE
De-bubbler design Outlet Low Pressure Bleed Aerated Water De-aerator Sensors
Electronics - enclosure • Single interface PCB • All wiring on removable connectors • Easy field replacement • Digital interfaces • MODBUS via Ethernet • Dual redundancy • USB 2.0 for data download • Analogue interfaces • Optional 5 off 4-20 mA COMMERCIAL IN CONFIDENCE
PAH+ sensor Integrated fluorometer & transmissometer Fluorometer Range: 0.04 to 4500 µg/l, PAH phe eq (corrected) • Sensitivity: <0.07 µg/l @ 1 Hz • Excitation wavelength: 255 nm • Emission wavelength: 365 nm • Turbidity rejection: ≤5 % deviation for 300 µg/l Phenanthrene • over turbidity range 0-1000 FNU (corrected) Transmissometer Measurement range: 0 – 3.5 cm -1 • Resolution: 0.002 cm -1 • Pathlength: 1.25 cm • Wavelength: 255 nm • COMMERCIAL IN CONFIDENCE
Turbidity sensor Turbidity sensor • Measurement range: 0 to 1000 FNU • Sensitivity: 0.15 FNU @ 1Hz • Measurement principle: ISO 7027:1999(E) compliant • Wavelength: 860 nm • Bandwidth: 30 nm COMMERCIAL IN CONFIDENCE
Sensor calibration & validation PAH+ & Turbidity sensors • Calibration valid for 2 years (unpowered) • Calibration interval 12 months in use (return to CTG) • On-site validation using solid sensor calibration check pH Sensor • Calibration interval 1 month in use (on-site) • Software based calibration protocol using pH4 & pH7 buffer tablets Optical sensor calibration check COMMERCIAL IN CONFIDENCE
Touchscreen GUI COMMERCIAL IN CONFIDENCE
GUI – home screen COMMERCIAL IN CONFIDENCE
Sea Sentry • Sensors • Digital pH probes (pre-calibrated) • Turbidity sensor, ISO 7027:1999(E) compliant • Extended range PAH phe eq sensor • Turbidity , ‘colour’ and temperature correction • Integrated sensor validation/calibration protocols • Solid standards for optical sensor validation • System • Integrated pump & de-bubbler • Pneumatic anti-fouling protection • Single board interface electronics • Touchscreen Graphical User Interface COMMERCIAL IN CONFIDENCE
Thank You www.chelsea.co.uk COMMERCIAL IN CONFIDENCE
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