FlarePhase Cryo

Designed for non-intrusive flow measurement in cryogenic temperatures, such as those found in the gas liquefaction industries.

Bracing the Cold

The next-gen cryogenic ultrasonic flow measurement solution

FlarePhase Cryo Forms part of the new generation of transducers and includes our ‘Active Phase Analysis Technology’ for continuous measurement optimization.

The FlarePhase Cryo is Fluenta’s solution to flow measurement at cryogenic temperatures. As part of the advanced FlarePhase range of ultrasonic transducers, the FlarePhase Cryo also comes equipped with a new piezo-electric sensor made from advanced ceramics which ensures that it can continue measuring at cryogenic temperatures for extended period of time while maintaining accuracy.

Packaged with the the FlareAmp and FlareAmp controller and also featuring the “Active Phase Analysis Technology” and continuous measurement optimisation, it boasts accuracies as high as ±0.75% making it a truly next generation ultrasonic measurement solution for cryogenic applications.


Cryogenic Gas Flows

The ability to measure gas flows at cryogenic temperatures for extended periods of time while maintaining accuracy levels makes this ideal for the LNG and gas liquefaction industries.

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High Levels of Hydrocarbons

The FlarePhase Cryo is optimized to handle difficult gas compositions including high methane concentrations.

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Features and Highlights

The “Active Phase Analysis Technology” combats the issue of phase shifts, which is an inherent issue faced by ultrasonic measurement devices and results in inaccuracies. By determining the phase shifts and calculating the necessary compensation, the FlarePhase range provides laboratory levels of accuracy in the field.

The FlarePhase Cryo can be installed in either a single path or a dual path configuration. The dual path can be configured to either provide heightened security in terms of redundancy, when data continuity is of utmost importance or a more accurate measurement as with a dual path accuracy as high as ±0.75% can be achieved.

The FlarePhase Cryo is able to measure gas flows at cryogenic temperatures as low as -200°C (-328°F) for extended periods of time.

Key Specifications

Measurement Parameters

Standard and actual volume flow, mass flow, totalized standard volume flow, totalized mass flow, molecular weight, standard density, actual density, pressure, temperature, speed of sound, gas velocity


ATEX: ExVeritas 20ATEX0699 X

IECEx: EVX 20.0044X

Operating Temperature

-328 to 482 °F (-200 to 250 °C)

Operating Pressure

11.6 – 145 psiA (0.8 to 10 barA)

Flow Velocity Range

0.1 – 394 ft/s (0.03 – 120 m/s)


Standard: ± 2.5% to 5%

Optional: ± 0.75% to 2%


Better than 1% of volume flow for specific velocities

Turn Down Ratio


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