FLEXIM - FLUXUS F801 - Offshore Flowmeter - The Offshore Flow Meter for liquids

The Offshore Flow Meter for liquids

The ultrasonic flow meter for Offshore and Mining applications

The FLUXUS F801 flow meter for liquids is FLEXIM's solution for explosion hazardous environments and offshore locations (being ATEX (IECEx) approved for usage in zones 1 and 2).

Its flameproof field-enclosure is made entirely of stainless steel, and thus the flow meter is permanently sea spray and seawater-proof and can easily be operated by a magnet pen without having to open the housing.

The FLUXUS F801 flow meter allows for an inherently bi-directional flow measurement of volume and mass flow rates of nearly any liquid media - ranging from crude oil to refined products - and can be equipped with various outputs to be used for a sophisticated process control. The meter's ultrasonic transducers are mounted on the outside of the pipe wall, enclosed in a rugged stainless steel PERMALOK mounting fixture, the system does not suffer from wear, tear or clogging and is risk-free for leaks.

Owing to it's matched and paired transducers as well as the internal temperature compensation (compliant to ANSI/ASME regulations), the measurement system is drift free and zero stable. Moreover, as the transducers calibration data is automatically loaded by connecting the transducer to the transmitter, set-up times are significantly reduced. Leveraging its exceptional dual-uP technology, the high number of measuring cycles per second and the adaptive signal processing, the FLUXUS F801 flow meter produces stable and reliable measuring results even under difficult conditions.

The F801 flow meter can be used on pipe diameters ranging from 1/4 inch up to 500 inches (no limitations on pipe wall thickness or material) and media temperatures from -330 °F up to +1100 °F (by means of the high temperature mounting fixture WaveInjector).

With up to two measurement channels, the FLUXUS F801 flow meter can also solve challenging measurement problems with non-ideal flow profiles. Even liquid streams with a high content of solids or gas bubbles can be metered due to the innovative HybridTrek mode offered by thus transmitter.


The Offshore Flow Meter for liquids - FLUXUS F801



  • Ultrasonic clamp-on flow meter with two measurement channels and ATEX Zone 1 approval 
  • Rugged seawater resistant SS316 Stainless Steel flameproof housing
  • Installation and parameterization without having to open the housing
  • Installation without process shut-down
  • Very cost efficient measurement system - virtually no maintenance needed
  • Stable, accurate and reliable measurement readings due to matched and temperature compensated transducers as well as innovative digital signal processing
  • Independent of entrained particles or gas bubbles
  • Flexible configurable outputs
  • Measurement at any pipe material, size, wall thickness and at temperatures from -170°C up to 400°C and beyond (with WaveInjector mounting fixture)
  • Independent of pressurization inside the pipe

Technical Facts

Flow channels
1 or 2
Operating temperature of the transmitter
-4°F ... 120°F
Degree of protection
IP 66 (Transmitter)
Functional Safety (acc. to IEC / DIN EN 61508)
Optional hazardous area classification
ATEX and IECEx Zone 1 and 2
ATEX Zone 1 mining certification optional
FM approved transducers available
1 current, 1 binary (OC)
Also available
1 or 2 binary outputs (relay), 1 binary (OC) and 1 current, 1 binary (OC) and 1 frequency
Communication Protocol
HART, Modbus, RS485
Media temperature
-40°F ... 390 (-275 °F ... +1100 °F with high temperature WaveInjector mounting fixture)
Pipe diameter range
0.25 inches ... 500 inches
Flow velocity range
0.03 ... 80 ft/s
Measurement accuracy
± 1.0% of reading ± 0.03 ft/s with 5-point NIST calibration
Measurement accuracy
(field calibrated)
± 0.5% of reading ± 0.03 ft/s
±0.15% of reading, ±0.03 ft/s
Additional Notes
Corrosion-proof and seawater-proof flow meter; resistant to saltwater mist
Additional Notes
Connection enclosure and electronics enclosure are hermetically sealed
Additional Notes
Connection compartment: increased safety, Output circuits: intrinsic safety
Additional Notes
240V or 24V DC power supply version of the transmitter available

360° view


For the manual 360° view pull the image left or right


FLUXUS F800 / F801 (ADM 8x27)

Technical Specification

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