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The CO2-Pro™ is a lightweight, compact, and versatile sensor for measuring the partial pressure of CO2 in water. It is designed for in-situ pCO2 measurement on shipboard in underway-mode, in the laboratory and on moorings, profilers and gliders.



The CO2-Pro™ is a versatile pCO2 instrument featuring the Pro-Oceanus patented pump-driven tubular gas transfer interface. This revolutionary interface provides rapid equilibration of surrounding water with a NDIR detector.

Long-term stability is achieved with the CO2-Pro™ sensor through an automatic zero compensation circuit that removes all CO2 from the detector prior to a zero reference measurement. The CO2-Pro™ dissolved CO2 instrument comes with plug-n-play ease of operation, and a range of data handling options including storage onboard, and continuous or pollable output.

-High precision and accuracy
-Low power and lightweight
-Unique patented antifouling protection
-Onboard logging available
-Atmosphere measurement option

Physical Dimensions
-Length: 33 cm (add 10 cm for connectors)
-Diameter: 19 cm
-Weight: 5.5 kg in air, 0.4 kg in water
-Housing: Acetal housing (depth rated to 110 meters)


Depliant CO2-Pro - Download

Manuale CO2-Pro - Download

Application Note
AN 1.1 - Dissolved CO2 and Units of Measurement - Download
AN 1.2 - Equilibration Dynamics of Semi-Permeable Membranes - Download
AN 1.3 - Accuracy of CO2-Pro Series Sensors - Download