FLUXUS F808 - clamp-on flow meter for hazardous areas IECEX / ATEX Zone 1 approved


Chemical Industry

  • (Hazardous) Organic and Inorganic media
  •  Acids and Caustics
  •  Polymerization Processes
  •  Infrastructural Processes and many more

Crude Oil Refining and Hydrocarbon Products Handling

  • Monitoring of Hydrocarbon Product Flows
  • Pipeline Monitoring
  • Allocation Terminals

Oil Exploration On-&Offshore

  • FWKO and Separator In-/ Outlet
  • Coalesces
  • Scrubbers and Reboilers
  • Produced Water Injection
  • Chemical Injection
Technical Datasheet
tsfluxus_f808xx-x1 - en-gb.pdf
Adobe Acrobat Document 1.0 MB


  With the FLUXUS F808, FLEXIM presents a clamp-on flow meter for liquids with  IECEx / ATEX Zone 1 approval.

From wellhead to refinery, the flows of crude oil and refined products need to be measured every step of the way. Harsh environments with corrosive atmospheres offshore or hot and dirty applications during crude oil refining require tough solutions. Also during chemical processing, media such as acids, caustics or highly viscous organic substances place enormous material and mechanical stress upon wetted flow measurement technologies.

The highly rugged FLUXUS F808 with its flameproof housing and stainless steel transducers is suited for every industrial application.

With its connection and electronic compartment being hermetically sealed, the FLUXUS F808 provides for a maximum of operational safety and is especially designed for usage in rough industrial environments such as in Chemical and Petrochemical plants.

In conjunction with the extremely robust transducers and the  VARIOFIX transducer mounting fixture (Stainless Steel SS316 available),  which ensures a permanent contact pressure to the pipe wall and an extreme mechanical stability, the FLUXUS F808 is the most reliable ultrasonic clamp-on flow meter available. As the ultrasonic transducers are mounted on the outside of the pipe wall, the system does not suffer from wear, tear or clogging and can't be a risk for leaks.

But the FLUXUS F808 is not only rugged – due to carefully matched and temperature compensated transducers (fully ANSI / ASME MFC 5M compliant) the FLUXUS F808 offers an unmatched zero stability. Highly innovative digital signal processing within the flow meter cares most reliable, repeatable and accurate bidirectional flow measurement over a wide turndown ratio.

The FLUXUS F808 flow meter can be applied at inner pipe diameters ranging from 6 mm up to 6,5 m and more. Even liquid streams with a high content of solids or gas bubbles are not a problem due to the innovative HybridTrek mode and the unique signal processingimplemented into the flow computer.


  • Highly rugged calmp-on flow meter for the harshest industrial environments (ATEX / IECEX and FM approved)
  • Precise and reliable bidirectional flow measurement over a wide turndown ratio
  • Very cost efficient:
    • No pipe works
    • No process shut-downs
    • Virtually no maintenance
  • Matched, paired and wet flow calibrated
  • Highly zero point stale and drift free
  • Independent of pipe size, material, pressurization and the medium
  • Independent of entrained solids and gases
  • Free of wear, tear and abrasion
  • Not prone to clogging or corrosion
  • Not responsible for pressure losses or possible leaks
  • Rugged flameproof housing, stainless steel armored cables and transducers mounting fixture
  • Installation and parameterization without having to open the housing
  • Stable, accurate and reliable measurement readings due to matched and temperature compensated transducers as well as innovative digital signal processing
  • Flexible configurable outputs


Flow channels


Operating temperature of the transmitter

-40 °C to +60 °C

Operating temperature of the transducers at pipe wall

-40 °C to +200 °C

Degree of protection Transmitter


Functional Safety (acc. to IEC / DIN EN 61508)


Optional hazardous area classification

ATEX and IECEx Zone 1 and 2, FM Class I, Div. 1 / 2

Quantities of measurement

Operating flow rate, standard flow rate, volume flow, flow velocity

Flow velocity range

0,01 to 25 m/s

Pipe diameter range

10 mm up to 6,5 m


0.15% of reading ± 0,01 m/s

Measurement accuracy

(field calibrated)

±0,5% of reading ± 0,01 m/s

Measurement accuracy

(extended calibration)

±1.2 % of reading ± 0,01 m/s

Measurement accuracy


±1.6 % of reading ± 0.01 m/s

Data logger capacity

> 100.000 measured values

Loggable values

all physical quantities, totalized values and diagnostic values


1 current output and 1 binary output or 1 current output and Modbus

Communication Interface

HART, Modbus, RS485

Power supply

100 to 240 V / 50 to 60 Hz or 20 to 32 V DC