Ultrasonic flowmeter offers custody-transfer accuracies

23 November 2012

The new SITRANS FUT 1010 ultrasonic flowmeter is believed to be the first of its kind to offer custody-transfer accuracy, together with minimal maintenance demands.

The SITRANS FUT 1010 liquid and gas flowmeter is designed to suit diverse applications across the demanding liquid and gas hydrocarbon industries.

Matt Bird, from Siemens Industry, explains: “The SITRANS FUT 1010 liquid and gas flowmeter offers a number of operational and cost-related advantages which have been proven in use to meet the specific and challenging needs of the liquid and gas hydrocarbon industries. This means it offers many advantages over traditional inline meters when it comes to flow measurement precision and custody transfer solutions.”

The flowmeter incorporates Widebeam transit time technology, which increases flow measurement precision by reducing the sensitivity to changes in the medium’s physical properties. The resonant frequency of the pipe wall is used to transmit the beam into the media with the wall acting as a waveguide. This ensures that a strong coherent signal is generated.

With the newly developed permanent and unique TransLoc mounting system, Widebeam sensors are permanently mounted on the outside of the pipe, providing custody transfer accuracy while eliminating any contact with the medium. Use of such non-intrusive ultrasonic transducers – which are sealed in an IP65 enclosure rating –protects them from harsh operating environments and reduces the required levels of maintenance for the meter, with typical maintenance scheduled for every three years. This compares to a typical insertion spool maintenance regime requiring attention twice a year.

The external mounting feature allows the transducers to be calibrated for higher accuracy and provides an additional benefit as it alleviates problems associates with the clogging of cavities which is often seen in conventional flowmeters in hydrocarbon applications.
The FUT 1010 is capable of measuring most hydrocarbon liquids, at viscosities up to 2,800 CST, compared with the typical 300 CSTt limit on inline meters. The unit is suitable for use in water, multiple crude oils, gasoline, kerosene, jet fuel, diesel, fuel oils and liquefied gas applications, as well as natural gas, process gases, helium and hydrogen.

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