Ultrasonic flowmeter for custody transfer (CT) measurement in upstream and midstream applications

  • Multipath inline meter for crudes, refined products, cryogenic media and chemicals
  • CT: OIML R117, API compliant
  • Flange: 4…24"; max. ASME Cl 600
  • -200…+250°C / -328…+482°F

ALTOSONIC 5 Ultrasonic flowmeter

ALTOSONIC 5 Ultrasonic flowmeter

The ALTOSONIC 5 is a multi-path ultrasonic flowmeter for custody transfer (CT) measurement in upstream and midstream applications of the oil and gas industry. The high accuracy meter is suitable for measuring all types of crudes in transportation, processing, loading or offloading applications as well as all types of refined products or chemicals. Due to its unique paths configuration, the ALTOSONIC 5 is suitable for all flow regimes without Reynolds number limitations. In addition, a vertically mounted transducer pair detects gas on top of the liquid.

The ALTOSONIC 5 is also ideally suitable for cryogenic applications (down to -200°C / -328°F) as well as applications with high viscosity up to 1500 cSt. Its full bore design enables maintenance-free operation without pressure loss. With the condition-based monitoring system and the optional diagnostics expert system the accuracy of the meter is evaluated 24/7 inside the meter itself enabling the operator to take preventive action when necessary. This all results in considerable cost savings in capital expenditures (CAPEX) and operational expenditures (OPEX).

Product highlights

  • Bi-directional flow measurement with the widest certified turndown ratio (75:1)
  • Unique path configuration plus one vertical path for diagnostics
  • Independent of flow profile (Reynolds number) and product variations
  • Certified viscosity range up to 1500 cSt
  • Reduced installation length: down to 5D with flow conditioner
  • Transducer replacement under process conditions
  • Extensive diagnostic features: recognition and visualisation of complete flow profile
  • Full pipe guarantee: integrated entrained gas detection
  • Significantly easier small volume proving
  • Easy integration with SUMMIT 8800 or any other approved flow computer
  • No moving parts, no wear, no pressure loss

Typical applications


  • Master metering
  • Custody transfer (fiscal metering) of multiple products
  • Liquid hydrocarbons

Oil and gas industry

  • Offshore (platform) and onshore oil production
  • FPSO (Floating Production Storage and Offloading) units
  • Allocation metering
  • Loading and offloading terminals (crudes, refined products and LNG)
  • Pipeline metering (crude oil, multi-product)
  • Product identification
  • All types of refined products, cryogenic media(LNG)

Chemical and other process industries

  • Batching of liquid hydrocarbons and biofuels
  • Truck and ship loading

Conventional power industry

  • Cooling water
  • Condensate
  • Boiler feed water

Related products


Flow computer for custody transfer (CT) measurement

  • Cost effective solution due to modular hard- and software design
  • Full colour graphical touch screen for maximum process transparency
  • Easy operator access enabling time efficient maintenance
  • Automatic Performance Monitoring extends recalibration interval

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