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Ultrasonic flowmeters

Versatile and economical flow measurement of gases and liquids up to a nominal diameter DN 4000

Using ultrasonic waves, the flow volume of a wide variety of gases and liquids can be measured reliably – independent of electrical conductivity, pressure, temperature, or viscosity.
In applications that require traceable and guaranteed accuracy, inline ultrasonic sensors are preferred for use. Clamp-on ultrasonic sensors, on the other hand, are installed on the outer wall of the pipe and thus also enable temporary measurements or a retrofitting.

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Clamp-on sensors

  • For retrofitted installation without interrupting the process

  • Aggressive fluids can be measured without any problems, even under high pressure

  • Suitable for pipes made of plastic, steel, cast iron composite materials (lined/unlined)

  • For pipe diameters up to DN 4000 (156″)

In-line sensors

  • Guaranteed accuracy thanks to traceable factory calibration

  • Robust industrial design in accordance with ASME and EN

  • Short inlet runs

  • For pipelines up to DN 300 (12″)

Ultrasonic flow measuring principle

Swimming against the flow requires more power and more time than swimming with the flow. This simple fact is the basis for ultrasonic flow measurement according to the “differential transit time” method: This method uses two sensors, set opposite each other in the measuring tube. Each sensor can alternately transmit and receive ultrasonic signals, while simultaneously measuring the signal transit time.

As soon as the fluid in the tube starts to flow, the signals are accelerated in the direction of flow but delayed in the opposite direction. The differential transit time, measured by the two sensors, is directly proportional to the flow rate.

Benefits

  • Measurement independent of pressure, density, temperature, conductivity and viscosity (for homogeneous fluids)

  • Free pipe cross-section, no pressure loss

  • No moving parts, minimum maintenance and upkeep

  • Long service life, no abrasion or corrosion from the fluid

  • In-line or clamp-on design for stationary or temporary flow measurements

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Prosonic Flow P 500- FlowDC

With the Clamp-on Ultrasonic Flowmeter you can eliminate penetrating the pipe and shutting down your plant process. For maximum performance in confined spaces with the new flowDC function.

Benefits

  • No moving parts
  • No pressure loss
  • No leak paths
  • Exceptional turn-down ratio
  • >2 x DN
  • Measures flow from 0.1 ft/sec to 40 ft/sec velocity

Features

  • Wide nominal diameter range
  • Suitable for pipes made of metal, plastic, GRP or composite materials (inined/unlined)
  • Applicable for a wide variety of liquids such as chemicals, liquid hydrocarbons, solvents, acids, bases, water, etc.

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Prosonic Flow G 300/500

Benefits

  • Fully-metallic transducers
  • High robustness against condensate
  • Horizontal & vertical drainage
  • Integrated p+T measurement
  • Heartbeat Technology

Gas Analysis Features

  • Single gas
  • Gas mixtures *Maximum of 8 gas components
  • Coal gas/bio gas
  • Natural gas – standard calculation
  • Natural gas- using sound velocity
  • User-specific gas

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FLOWSIC 100 FLARE-XT

  • Gas velocities of 0 to 394 ft/s
  • Rapid changes in the gas velocity
  • Rapidly changing gas mixtures of natural gas, hydrogen, carbon dioxide, etc.
  • Measurement availability even at high gas velocities and with changing gas mixtures
  • Proprietary measurement range extension for high flow velocities thanks to ASC-technology (active sound correlation)
  • Intuitive FLOWgate™ operating software

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FLOWSIC600-XT

  • User-friendly product family
  • Automatic correction of pressure and temperature effects
  • Available for all operating conditions
  • PowerIn Technology™ for reliable backup operation
  • Intelligent application diagnostics with i-diagnostics™
  • Extendable with flow computers per connect-and-go

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FLOWSIC600 DRU

  • 3” to 6” dual-path ultrasonic meter with special 10D inlet piping (integrated or flanged)
  • High-quality components with superior manufacturing precision
  • High turndown ratio covering typical flow ranges of multiple
  • orifice meters
  • Accurate to ± 1 % without a high-pressure flow calibration
  • Transducers designed for wet gas applications

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FLOWSIC500

  • Cutting-edge technology: ultrasound
  • Diagnostics and permanent operational check
  • Durable and reliable without moving parts
  • Replaceable “cartridge”
  • Straight inlet/outlet piping not required
  • Overload-proof
  • Optional integrated volume correction/data registration
  • Battery or intrinsically safe power supply
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