OPTISONIC 4400 HP Ultrasonic flowmeter for high pressure liquids


  • Applications with high process pressures
  • Various conductive and non-conductive liquids
  • High pressure upstream applications (e.g. well injection)
  • Oil transportation
  • Heat transfer circuits
  • Boiler feed water
  • HP feed water in combined power plants
  • Certifications: EN (1092-1): DN25…1000
    ASME (B 16.5): 1…40″
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  • 2-path meter for flow measurement of condensate, high pressure feedwater, spray water or water injection
  • Operating pressure up to 490 bar / 7107 psi
  • Max. DN1000 / 40″, up to ASME Cl 4500
  • 3 x 4…20 mA, HART®7, Modbus, FF, Profibus-PA/DP


The OPTISONIC 4400 HP Ultrasonic Flowmeter is the perfect choice for measuring high pressure liquids. This flowmeter features a noninvasive, transittime measuring principle and is designed to measure flow in all kinds of liquids, including liquids with high pressure. It is also suitable for process liquids and slurries.

The OPTISONIC 4400 HP is designed for easy installation and maintenance, featuring a robust design and a userfriendly display. It is also equipped with a builtin temperature sensor and offers excellent accuracy and repeatability. With its reliable performance, this flowmeter is ideal for a wide range of applications, including wastewater, oil and gas, and chemical industries.

The OPTISONIC 4400 HP is a 2-path ultrasonic flowmeter for liquids. Those are processed under extreme conditions with high operating pressure up to 490 bar / 7107 psi. That’s why the flowmeter is the perfect choice for accurate flow measurement of condensate and high-pressure feed water or spray water measurement at power plants. And as well as for water injection in upstream oil production.

  • Bi-directional flow measurement over a wide dynamic range
  • Meets the requirements of the oil and gas industry: NACE MR 175/103 and ISO 15156 conformity
  • Independent of flow profile (Reynolds number) and product variations
  • Resistant to corrosive and abrasive products
  • Transducer replacement under process conditions
  • Extensive sensor and process diagnostics (incl. NE 107)
  • Optional heating jacket
  • Welded-end connections on request
  • No periodical maintenance or recalibration needed


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