Test & measurement
invited guests from industries such as lime, cement and steel with proof of concept and performance verification for CPT’s carbon capture data. Five of Vaisala’s MGP241 probes continuously
monitor CO2 concentrations in the feed gas, during the process and in both the permeate and the retentate. Data are logged once per second and carbon capture efficiency is calculated and displayed in real-time. “The accuracy and reliability
of the CO2 probes is critically important,” Simon Gorringe explains. “Our initial research indicated that the Vaisala probes would meet our stringent requirements, but the pilot plant has allowed us to perform mass calculations to check their accuracy. Happily, this work was able to verify the high performance levels that the Vaisala probes deliver.” The MGP241 probe was developed specifically to fill a gap in the market for carbon capture measurement probes. Uniquely, the MGP241 uses patented CARBOCAP auto-calibrating infrared technology for the simultaneous inline measurement of both carbon dioxide and humidity. Importantly, the probes are able to accurately measure any
Instrumentation Monthly March 2026
CO2 concentration from 0 – 100 per cent. Humidity measurement is also important because
condensation would allow the formation of acids that would damage the equipment.
NEXT STEPS
CPT has recently announced that it has commenced the assembly of its 10,000 tonnesperannum carbon capture plant on site at Höver. CPT’s construction team is currently installing and connecting the prefabricated modules, which is expected to take around two months. Capture operations are scheduled to begin in Q2 2026 following which the plant will demonstrate the performance, economics, and operability of CPT’s technology at scale over a 12-month period, and will also utilise Vaisala probes to verify projected performance.
For example, CPT will target 95 per cent CO2 recovery. CPT and Holcim will then collaborate on the full decarbonisation of the Höver plant with plans to build a larger plant to capture around
90 per cent of Höver’s CO2 emissions (around 800,000 tpa), at the start of the next decade.
Looking forward, CPT CEO Andrew Corner says: “With over 150 locations worldwide, Holcim represents enormous decarbonisation potential for CPT’s technology.” However, given the size and urgency of worldwide demand for decarbonisation, Andrew is keen to emphasise the global potential: “From the outset, we have been resolutely determined to ensure, not just that our carbon capture solution is modular and scalable, but also, that it is both environmentally and financially sustainable.”
Clearly, CPT is targeting all of the hard-to-abate industries, and Andrew Corner believes that the key to unlocking this potential is the provision of trust and confidence in carbon capture efficiency. “I am very happy to acknowledge the role that Vaisala’s probes play in delivering that trust,” he explains. “Our customers need to know what levels of performance they can expect from our systems, so
the inline measurement of accurate, reliable CO2 concentrations is critically important.” Vaisala
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