Cignus Instruments AS is industrializing a novel and patented concept for precision direct mass-flow measurements of gases and liquids with particular advantage for applications within the emerging H2 and CCS value chains. Our technology is developed in close partnership with major energy companies, pipeline operators and equipment suppliers with global ambitions and motivated by the green transition.
Cignus Torsional Coriolis Mass flowmeters
Cignus measures mass flow using a internal sensing structure that oscillates in torsion and is decoupled from the pressure-bearing pipe. The instrument applies the Coriolis principle, with timedelay and frequency as its primary measurement parameters translating to mass-flow and density.
This preserves the core advantages of Coriolis direct mass-flow measurement while enabling new capabilities; higher operational pressures, larger line sizes, very low pressure loss, and compact installations.
Performance and capacity at high operational pressures
The decoupled sensor structure allows the Cignus flowmeters to maintain performance at high pressures, very large pipe sizes and with thick walled piping.
Minimal pressure loss
Cignus flowmeters can be made to flush fit standard piping inner diameters, retaining >90% full pipe bore with a straight-through flow path. This results in a negligible pressure loss notably lower than conventional meters.
Performance at low massflow
A decoupled sensing structure that stays tuned and sensitive while the pipe wall bears the pressure, delivering reliable low-mass-flow measurement for low-density gases.
Compact installation footprint
Cignus flowmeters can keep the installation footprint small within bounds of the piping connections.
One meter, Any line size
Design is adaptable to sizes beyond that of traditional Coriolis flowmeters > 16in Nominal Pipe Size.
Subsea and submerged design
With an isolated measurement structure and compact size, the design is readily adaptable for subsea service at high working pressures used for injection and high external pressures found at the ocean floor.
R&D
Cignus Mass flowmeters are currently part of R&D and testing programs to qualify for applications in the CCS and H2 value chains in collaboration with our R&D Partners.
Partners:
Read more about the Applications
News
-
Gemini Research news by NTNU and SINTEF
Geimini have published an article on Cignus sensors in their collaborative efforts on advanced computer simulations performed to understand the flowmeter response. Read the article here (English) Read the article here (Norwegian)
-
Global Flow Measurement Workshop 2026
Cignus Instruments to present our novel mass-flow metering technology solving scaling challenges for H₂ and CCS at GFMW 29th – 1st October 2026 in International convention center, Edinburg UK. Conference day 3, 1st october – Session 6 New Technology Read more at TÜV SÜD
-
New Calibration of DN25 meters in Hydrogen
Cignus Instruments passes a milestone with rolling out the latest iteration of mass flowmeter aimed for Hydrogen flow measurement. After a period of design, characterization and adjustments, the flowmeters are now being Calibrated in Hydrogen at DNVs flowloop in Groningen. These meters will now proceed to pilot installations on Electrolyzers in Norway due fall of…
-
Commisioning of new flowloop
Cignus has commisioned a new water flowloop with temperature control in the Cignus lab. The loop will be invaluable piece of equipment for initial characterization of new flowmeters. Cignus team mounting a flowmeter in the floowloop.
-
Cignus joins H2MET Joint Industry Project
Cignus Instruments joins H2MET, a DNV led joint industry project scheduled for 2025 with the purpose of assessing the performance of different flow measurement technologies in 100% Hydrogen. Read more about the project published by DNV: Metrology for hydrogen flow – H2MET Cignus pure H2 test
-
How Cignus Instruments builds better carbon capture and hydrogen business with CaptureMap
Read external article: How Cignus Instruments builds better carbon capture and hydrogen business with CaptureMap – CaptureMap
- Gemini Research news by NTNU and SINTEF
- Global Flow Measurement Workshop 2026
- New Calibration of DN25 meters in Hydrogen
- Commisioning of new flowloop
- Cignus joins H2MET Joint Industry Project
- How Cignus Instruments builds better carbon capture and hydrogen business with CaptureMap
- Testing of mass flowmeters for CO₂
- Cignus is exhibiting at ONS 2024
- Cignus partners with IFE for Horizon Europe Project ENCASE
- Cignus Instruments develops a new solution for direct mass flow metering of CO₂