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Ultra™ 4C Liquid Ultrasonic Flowmeter

Brand: TechnipFMC
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The Smith Meter® Ultra 4c liquid flowmeter is a four-path ultrasonic meter for custody transfer measurement of petroleum products.

The meter provides highly accurate measurement over a range of light to medium crude oils and refined products using an exclusive four-path design.

Principle of Operation

The Ultra 4C calculates flow rate by measuring the transit time of ultrasonic sound signals traveling back and forth across the flowing fluid.

The signal transmission and detection is achieved using piezoelectric transducers located on either side of the measurement path.

Flow velocity is calculated from the transit times and these velocities integrated to the total volumetric flow rate through the meter.

The Ultra 4C transducers are non-intrusive and flush-mounted ensuring low maintenance requirements and no obstructions to full bore passage through the pipe.

The transducer element is fully encapsulated in a removable well, allowing it to be serviced with the meter under pressure.
Features
  • Custody transfer accuracy - +/-0.15 percent (%) linearity over 10:1 normal flow range and meets International Organization of Legal Metrology (OIML) R117 and American Petroleum Institute (API) requirements for custody transfer
  • Efficient design - The four measurement paths yield custody transfer accuracy in an efficient, cost-effective design
  • Light to medium crude oils and refined products - The Ultra 4c is the ideal solution for the accurate measurement of light to medium viscosity products
  • Accuracy and stability - The transducer path arrangement is optimized for flow measurement accuracy and stability
The Smith Meter® Ultra 4c liquid flowmeter is a four-path ultrasonic meter for custody transfer measurement of petroleum products.

The meter provides highly accurate measurement over a range of light to medium crude oils and refined products using an exclusive four-path design.

Principle of Operation

The Ultra 4C calculates flow rate by measuring the transit time of ultrasonic sound signals traveling back and forth across the flowing fluid.

The signal transmission and detection is achieved using piezoelectric transducers located on either side of the measurement path.

Flow velocity is calculated from the transit times and these velocities integrated to the total volumetric flow rate through the meter.

The Ultra 4C transducers are non-intrusive and flush-mounted ensuring low maintenance requirements and no obstructions to full bore passage through the pipe.

The transducer element is fully encapsulated in a removable well, allowing it to be serviced with the meter under pressure.
Features
  • Custody transfer accuracy - +/-0.15 percent (%) linearity over 10:1 normal flow range and meets International Organization of Legal Metrology (OIML) R117 and American Petroleum Institute (API) requirements for custody transfer
  • Efficient design - The four measurement paths yield custody transfer accuracy in an efficient, cost-effective design
  • Light to medium crude oils and refined products - The Ultra 4c is the ideal solution for the accurate measurement of light to medium viscosity products
  • Accuracy and stability - The transducer path arrangement is optimized for flow measurement accuracy and stability
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Specifications

Brand

Linearity

  • The linearity is +/- 0.15% over the normal flow range

Repeatability

  • +/-0.02%

Normal Viscosity Range

  • The normal viscosity range is 0.5 to 20 centistokes (cSt)

Extended Viscosity Range

  • 310 - 3400 cSt (mm²/s)

Process Fluid Temperature

  • Carbon Steel Housing: -50 to 250°F (-45 to 120°C)
  • Stainless Steel Housing: -58 to 250°F (-50 to 120°C)
  • Ambient Temperature: -40 to 140°F (-40 to 60°C)

NACE Compliant

  • Designed for NACE MR0175 Compliance
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Applications

  • Measurement of Refined Petroleum Products and Crude Oils for:
    • Custody Transfer
    • Pipeline Line Integrity
    • Loading and Unloading Terminals
    • Offshore FPSO and Platforms
    • Line Integrity
    • Inventory Control
    • Allocation
    • Line Balancing
    • Natural Gas Liquids (NGL) and Liquefied Petroleum Gas (LPG)
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