Chelsea Technologies Limited
About
Chelsea Technologies Ltd, part of the Covelya Group since 2018, is a UK-based ocean technology company headquartered in Yateley, Hampshire. With over 60 years of engineering heritage (incorporated 1964), the company holds ISO 9001 and Cyber Essentials Plus certifications and operates from a purpose-built 25,580 sq ft facility with dedicated laboratories, manufacturing, and calibration suites. Chelsea Technologies specializes in high-sensitivity fluorometric and optical instrumentation across three divisions. The Biological Sensing division produces the UniLux single-channel fluorometer, TriLux multi-parameter algal sensor (chlorophyll, phycocyanin, phycoerythrin), UviLux UV fluorescence sensors for tryptophan and PAH detection, and the LabSTAF phytoplankton primary productivity system using Single Turnover Active Fluorometry (STAF), along with its high-biomass variant LabSTAF HB and the compact MicroSTAF. The Maritime Compliance division delivers the Sea Sentry exhaust gas wash water monitoring system, FastBallast ballast water compliance tester, and UviLux PAH+ sensor for scrubber discharge monitoring per IMO regulations. The Acoustics division manufactures the SONO range of underwater transducers and the ERAS sonar evaluation and test system for defense and research. Their sensors are deployed on CTDs, buoys, AUVs, ROVs, and surface vessels worldwide, serving oceanographic research, aquaculture, oil spill response, CSO discharge monitoring, and green shipping compliance.
Key Products
Compact 2000m depth-rated fluorometer measuring Chlorophyll-a, Phycocyanin, Phycoerythrin, Turbidity, Fluorescein, and Rhodamine with real-time data output and sub-1W power consumption
Mini fluorometer measuring chlorophyll, turbidity, and phycocyanin (freshwater) or phycoerythrin (marine) in a compact form factor rated to 2000m depth
UV fluorescence sensor for real-time in-situ detection of PAH, BTEX, CDOM, tryptophan-like fluorescence, BOD, and optical brightening agents rated to 1000m depth
Phytoplankton primary productivity measurement system for research applications analyzing photosynthetic activity in water samples
High-biomass algae assessment variant of LabSTAF for analyzing waters with elevated chlorophyll concentrations
Compact phytoplankton monitoring instrument for field-based primary productivity and algae assessment
Bioluminescence detection sensor for monitoring bioluminescent organisms in marine and aquatic environments
Exhaust gas wash water monitoring system for ship scrubber compliance measuring wash water quality parameters in real time
Ballast water compliance monitoring instrument verifying ballast water treatment efficacy per IMO regulations
UV fluorescence sensor specifically configured for monitoring polycyclic aromatic hydrocarbons (PAH+) in ship exhaust gas scrubber wash water
Underwater acoustic transducer technology for defense and research sonar applications
Sonar evaluation and test system for calibrating and verifying underwater acoustic equipment performance
Maintenance, recalibration, and repair services for Chelsea Technologies instruments ensuring continued measurement accuracy
Educational programs on proper deployment, operation, and data interpretation for Chelsea sensor systems
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