In this second part of this Q&A series, we speak with 4H-Jena Engineering about the development of the CONTROS HydroC CO₂ sensor, an underway system designed for high-accuracy pCO₂ measurements. The interview explores how collaboration within GEORGE has supported technical optimisation, improved robustness for autonomous deployments, and helped prepare the sensors for long-term use across a range of observing platforms.
4H-Jena Engineering GmbH specialises in developing and implementing tailor-made measurement technologies for complex engineering challenges, including applications in environmental and marine observations. Within GEORGE, the company is working on two sensors: the underway and submersible versions of the CONTROS HydroC CO₂ sensor, and a CONTROS HydroFIA pH system.
Read below how the sensors have been developed and optimised in GEORGE, and scroll down to watch the interview in video form.
Q&A with Nadja Kinski, Divisional Director, 4H-Jena Engineering
What is your background and role?
My name is Nadja Kinski. I hold a Bachelor’s degree in Chemistry and Environmental Technologies, and I work at 4H-Jena Engineering.
What sensor are you working on?
I am working with an underway pCO₂ sensor designed for highly accurate measurements, as well as a submersible version for deeper deployments.
How is this sensor being improved within GEORGE?
Within GEORGE, we are improving both the underway and submersible versions of the pCO₂ sensor. For the underway system, we added a reliable way to use reference gases during autonomous measurements. For the submersible sensor, we developed a new membrane flange that enables deeper measurements over longer periods.
What makes the sensor unique?
The sensors are very small and modular, while still providing very high accuracy. An important feature is that we provide access to raw data, which allows users to apply suitable post-processing strategies for different deployment scenarios.
Watch the video on how to exchange the membrane of the 4H Jena CONTROS HydroC CO₂ sensor here.
