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 mass flowmeters
Cignus measures mass flow using a sensing structure that oscillates in torsion and is decoupled from the pressure-bearing pipe. The instrument applies the Coriolis principle, with frequency and time delay as its primary measurement parameters. This preserves the core advantages of direct mass-flow measurement while enabling new capabilities; high operational pressures, large line sizes, low pressure loss, and compact installations.
Performance and capacity at high operational pressures
A decoupled sensor structure allows Cignus mass flowmeters to maintain performance at high pressures, very large pipe sizes and with thick walled piping.

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.

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.

Compact installation footprint
Cignus mass flowmeters can keep the meter body within the envelope between 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.

Read more about the Technology

Read more about the Applications
News
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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 […]
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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.
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Cignus expands the team

Cignus instruments welcomes Christian Nomme to the team in the role of Senior Technologist. Christian has a background as a Mechanical Engineer with a Ma.Sc from NTNU. He enters with a long experience in R&D, design and development of new products and technologies. The last years he has been working employed as Principal Mechanical Engineer […]
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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
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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
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Testing of mass flowmeters for CO₂

Setting up Water flow test of CO2 prototype at TUV-SUD-NEL (Uk). Cignus Instruments AS Martin Nese is well-positioned to lead the development of the next generation of Mass-flow meters, with special focus on the CCS industry. We also see great potential in implementing such meters subsea, where it is crucial to know the exact amount of […]
- New Calibration of DN25 meters in Hydrogen
- Commisioning of new flowloop
- Cignus expands the team
- 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



