How Coriolis Metering Aids Tungsten Purification

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For this reason, H.C. Starck required the installation of a flowmeter to provide feed-forward process data to the purification system. The chosen meter needed to be able to measure density with high accuracy despite the fluctuating flow, pressure and temperature conditions that result from 15 to 20 pump starts per day.

Incorporating Coriolis Technology

H.C. Starck has been a Siemens customer for a long time, having relied on the Simatic PCS7 process control system to automate its facilities for more than 15 years. Over the past decade the company has also installed multiple Siemens process instrumentation solutions on difficult applications throughout its plants. As a result, H.C. Starck recently agreed to participate in a field test for the next generation of Coriolis flowmeters from Siemens: the Sitrans FC430.

Coriolis Flowmeter Measures Density of Sodium Tungstate Solution

The new Sitrans FC430 is the most compact flowmeter of its kind on the market, offering greater installation flexibility in even the tightest of spaces. It is also the first Coriolis meter from Siemens to utilize a digital signal for reduced noise interference, which increases accuracy and sensitivity. Other benefits of particular interest to H.C. Starck include the meter’s ability to measure density, volume and temperature in addition to mass flow, as well as its modular design for easy operation and service.

To perform the field test, a Sitrans FC430 prototype meter with a DN25 size sensor was installed on a discharge line below an intermediate storage tank and adjacent to a transfer pump. The Coriolis meter was placed in series with a previously existing electromagnetic meter, which was designated as a reference. The Sitrans FC430 was then subjected to a wide range of commissioning and operational assessments.

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