Krohne unveils Coriolis mass, three-beam ultrasonic flowmeters

Chicago, IL—Krohne Inc. introduced Coriolis mass flowmeters and three-beam ultra-sonic flowmeters to North America at an April 10 press conference at the Holiday Inn O'Hare/Kennedy.


Chicago, IL— Krohne Inc. introduced Coriolis mass flowmeters and three-beam ultrasonic flowmeters to North America at an April 10 press conference at the Holiday Inn O'Hare/Kennedy. Krohne is located in Peabody, MA, and Duisburg, Germany.

UFM 3030
Krohne's UFM 3030 three-beam ultrasonic flowmeters target the chemical, petrochemical and water industries. The company reports its new flowmeters overcome the final barriers preventing more widespread use of ultrasonics.

Combined with digital signal processing, for example, UFM 3030's third beam improves accuracy and repeatability of its measurements, which makes it applicable to custody transfer usage. Working on a transit-time principle, its three uniquely positioned in-pipe beams send out ultrasonic signals in direction of flow and against flow, using the transit-time difference to measure flow rate. It has no low-flow limitation compared to alternative methods. All this means that its measurements are independent of conductivity, viscosity, temperature, density and pressure.

Likewise, UFM 3030's unobstructed ultrasonic flow sensor, with smooth surface finish, inhibits any material build up. Krohne adds that this fact, combined with the flowmeter's lack of moving parts, allows it to provide many years of maintenance-free service.

In industrial process applications, UFM 3030 can measure acids and caustic solutions, ranging from nitric acid to caustic soda; non-organic substances, such as sulphur and chlorine; and organics, including liquid gases and bitumen. In oil and gas applications, UFM 3030 can measure heavy crude oils and liquid petroleum gases, while in water-related settings, it can measure drinking, waste, cooling and demineralized waters.

UFM 3030's other attributes include:

  • Usable in pipes from 1 to 120 in. diameter;

  • Non-intrusive to pipeline because of its inline installation, rather than clamp-on; as well as no pressure loss; few servicing/maintenance needs; and no periodic calibration required;

  • Can handle up to 2% of entrained bubbles in liquids;

  • Affordable compared to mass meters and vortex meters;

  • Able to be produced in large quantities, which will allow it to compete with magmeters of greater than 10-in. diamater;

  • Each meter is wet calibrated and has a certificate; and

  • An under-development FOUNDATION fieldbus interface.

Following its introduction in Europe five months ago, with more than 700 units already shipped, Krohne's Optimass Coriolis mass flowmeters were also introduced at the press conference. The company says Optimass is the first Coriolis flowmeter to provide wetted parts in titanium, stainless steel and Hastelloy, which allows corrosion resistance for almost any process fluid.

Optimass can handle flow rates from 0.66 to 20,500 lb per minute; handle high viscosity fluids and particulate matter; and maintain accuracy even in the presence of entrained air. Optimass includes two styles of Coriolis flowmeters: Series 70 straight tube; and Series 71 Z tube. Krohne adds that Series 70 is a general-purpose Coriolis meter, which overcomes the limited turn-down ratios of previous straight tube Coriolis meters.

Series 70's other capabilities include:

  • Adaptive sensor technology (AST); Seven sizes from 3/16 in. to 3 in., predominantly for liquids;

  • 1-2% of flow accuracy is possible. A high-speed, low-power processor and sophisticated software are used to interpret the very small vibration of the tube (0.003 in.); and

  • Already received European approval for hazardous area application.

Control Engineering Daily News Desk
Frank Bartos, executive editor; Jim Montague, news editor;

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