The designers of this powerful flowmeter have managed to keep its size and weight to an absolute minimum, without compromising the Endress+Hauser “fit and forget” philosophy. With a pipe diameter of 10 inches, the Promass DN 250 is exceptionally big in flow.

At the same time, its dimensions (1.8 m flange-to-flange) and weight (just over 400 kg) are exceptionally small, making the Promass DN 250 by far the smallest of the big flowmeters, and allowing easy installation without any need for additional structures or pipework support.

In tanker loading in the oil and gas industry there has been an increasing acceptance of Coriolis flowmeters as the technology of choice. Until now, however, they have typically been confined to diameters less than DN 150. The application of the Coriolis principle is particularly well suited to the measurement of non-conductive fluids such as hydrocarbons, oil and fuel where electromagnetic flowmeters are not suitable.

Coriolis flowmeters also have the advantage of being able to deliver mass flow as a direct output, in addition to density and temperature. In applications where mass flow would typically be derived from volumetric flow and density/SG (temperature-dependent), Coriolis flowmeters can measure mass flow directly without compensating for temperature change, and with the highest accuracy – within 0.1 per cent of reading. Since they have no moving parts, maintenance is reduced to a minimum.

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Coriolis flowmeters have historically been regarded as expensive, and until now have only been able to measure flow rates up to 900 tonnes/hour. Now, with the new 10-inch Promass DN 250, it is possible to measure up to 2,200 tonnes/hour for fluids with temperatures from –50°C to 200°C, greatly extending the range of possible applications.

With its fully welded stainless steel design, excellent accuracy, hazardous area approvals including ATEX, FM/CSA and SAA and selection of process connections such as DIN and ANSI, the new Proline Promass DN 250 is the perfect choice for mass flow measurement. It complies with SIL2 requirements, and is available with integral and remote transmitters, manufactured from powder-coated aluminium or stainless steel.

Since its introduction into the market in 2004, over 500 units have been installed in oil and gas applications worldwide. The Proline Promass DN 250 can be viewed at www.endress.com.au, where the user-friendly Applicator Selection software tool can help you explore your mass flow measurement options and determine the ideal Promass diameter and model to suit your needs.