The CONTROS HydroC® CO2 FT is a unique surface water carbon dioxide partial pressure sensor designed for underway (FerryBox) and lab applications. Fields of application include
ocean acidification research, climate studies, air-sea gas exchange, limnology, fresh water control, aquaculture/fish farming, carbon capture and storage - monitoring, measurement and verification (CCS-MMV).
Individual 'in-situ' calibration
All sensors are individually calibrated using a water tank which simulates the deployment temperature. A proven reference flow through system is used to verify the CO2 partial pressures
in the calibration tank. High quality standard gases are used to calibrate the reference system before and after every sensor calibration. This process ensures that the CONTROS HydroC® CO2
sensors achieve excellent short and long term accuracy.
Water is pumped through the flow head of the CONTROS HydroC® CO2 FT sensor. Dissolved gases diffuse through a cus¬tom made thin film composite membrane into the internal gas circuit
leading to a detector chamber, where the partial pressure of CO2 is determined by means of IR absorption spectrometry. Concentration dependent IR light intensities are converted into the output
signal from calibration coefficients stored in firmware
and data from additional sensors within the gas circuit.