Measure flare gas accurately and reliably in complicated conditions with Fluenta’s FlarePhase™ transducers.

Temperature and gas extremes are found in refining and petrochemical processes as well as in gas liquefaction processes, such as those involved in the LNG industry. These temperature extremes, alongside difficult gas compositions and large pipe sizes present challenges for flare gas measurement.

Fluenta’s FlarePhase™ transducers use new hardware and novel ‘active phase analysis’ technology to ensure high quality measurement in difficult installations, whilst retaining all the key advantages of the standard transducers.

Featuring Fluenta's FlareAmp™

Fluenta’s FlarePhase™ transducers are supplied with the FlareAmp™. This offers amplification at the points of measurement, ensuring good signals in large pipe diameters and difficult gas compositions.

The FlarempAmp™ coupled with advanced technological capabilities allows the Fluenta FlarePhase™ transducers to accurately and reliably measure flare gas flow in a combination of temperature extremes and dense gas compositions.

    With a temperature range of -196°C to +260°C (-328°F to +500°F), this transducer is suitable for high and low temperature flaring applications in both on-shore and off-shore installations.
    The Fluenta FlarePhase™ transducers can accurately measure in high levels of H2, CO2, or CH4 across the full pipe diameter.
    6” to 100” as standard, other pipe sizes application dependent. Solutions may be possible outside of this range.
    Fluenta installations are available with a range of accuracies better than ±0.75% , depending on customer requirements.
Non-Intrusive and Ultrasonic

As with Fluenta’s standard transducers, the Fluenta FlarePhase™ transducers use ultrasonic signals. This is by far the best technology for flare gas applications and allows for measurement over a wide range of flows with turndown ratios of 4000:1.

Fluenta transducers are non-intrusive, meaning they are less prone to the build-up of dirt and corrosion which can impact the measurement accuracy, and do not affect gas flow. Transducers which extend into the gas process are more likely to get damaged, increasing the need for repairs and replacement.

Narrowband sensing and 'Active Phase Analysis' technology

Unlike Fluenta’s TFS range of transducers, Fluenta’s FlarePhase™ transducers use narrowband transmit and sensing to ensure flare gas flow measurement is possible in difficult installations. Typically, narrowband technology comes with phase shift difficulties, however Fluenta’s advanced technology removes this industry-wide issue.

Phase shifts result in measurement inaccuracies, and therefore much be compensated for. Typical industry solutions are all inferential, therefore resulting in unavoidable measurement errors.

Fluenta’s FlarePhase™ transducers use novel ‘active phase analysis technology’ to combat this inherent transducer phase shift issue. ‘Active phase analysis technology’ accurately determines phase shifts, providing a definite figure to calculate the necessary compensation. This allows for laboratory levels of accuracy in the field, even in the most challenging gas and temperature conditions.

Phase Shifts

Phase shifts are the difference between an electrical stimulus and a mechanical response, as illustrated in the below image.

Full pipe diameter measurement

The Fluenta transducers measure flow across the whole diameter of the pipework. This gives the best sample of gas flow with a single pair of transducers. Other systems struggle with signal absorption in difficult gas mixes and therefore have very short distances between transducers – compromising the accuracy of the system.

Compact installation

No conditioning plates or other pipework inserts are required, and all Fluenta transducers require just 10 pipe diameters of straight tubing before the transducers and 5 diameters downstream. The Fluenta field computer can be mounted up to 50 meters from the transducers, allowing for easy, compact and flexible installation and positioning. The transducers require minimal maintenance as they have no moving parts.

Click here for current and historical Fluenta flare gas measurement product information, data sheets and more: