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The McCrometer V-Cone flowmeter fits into tight places, saving space and reducing weight while providing high levels of performance and accuracy.

This is intended to be beneficial for designers of mounted module systems for oil-and-gas applications.

Designed for portability, mounted module equipment requires a small footprint for easy shipment, quick installation in tight spaces and minimal environmental impact.

The V-Cone flowmeter meets the technical and space requirements for multiple applications in offshore and land-based production and refining operations.

It provides a solution for flow measurement in tight spaces such as mounted modules as it reduces the need for required flowmeter straight-pipe runs while meeting or exceeding necessary technical specifications, according to the company.

Mounted module systems require compact minimal pipe runs and the V-Cone reduces installation real estate, allows for flexible layouts and cuts overall pipe weight.

The precision V-Cone’s no-moving-parts design provides built-in flow conditioning, which nearly eliminates the upstream/downstream straight-pipe runs required by many other flowmeter technologies.

Other typical flowmeter installations may require 10 to 40 straight-pipe diameters upstream from the meter and five or more straight-pipe diameters downstream to eliminate the effects of swirl and other pipeline disturbances caused by valves or elbows that negatively affect measurement accuracy.

The space-saving V-Cone reduces typical flowmeter straight-pipe-run requirements by up to 70 per cent or more and needs only zero to three straight-pipe diameters upstream and zero to one downstream to operate effectively.

It fits into mounted module systems in crowded deep-water subsea production units, FPSO vessels and refineries, while also reducing pipe material costs and installation labour costs.

The V-Cone operates over a wide flow range of 10:1 and supports line sizes from 0.5in (12.7mm) to more than 120in.

McCrometer claims that the flowmeter requires virtually no recalibration or maintenance over a long life.

Unlike traditional differential-pressure instruments such as orifice plates and Venturi tubes, the V-Cone’s design is inherently more accurate because the flow conditioning function is built into the basic flow sensor design.

The flowmeter conditions fluid flow to provide a stable flow profile, resulting in a stable signal that increases accuracy.

The flow sensor’s design features a centrally located cone inside a tube.

The cone interacts with the fluid flow and reshapes the velocity profile to create a lower-pressure region immediately downstream.

The pressure difference, which is exhibited between the static line pressure and the low pressure created downstream of the cone, can be measured via two pressure-sensing taps.

One tap is placed slightly upstream of the cone and the other is located in the downstream face of the cone itself.

The pressure difference can then be incorporated into a derivation of the Bernoulli equation to determine the fluid flow rate.

The testing of the V-Cone flowmeter conforms to the American Petroleum Institute’s API 22.2 Testing Protocol for Differential Pressure Flow Measurement Devices for standard measurement requirements, as well as other international certifications such as Measurement Canada and Brazilian Inmetro when allocation and custody transfer measurements are required.

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