Gas Flowmeters for fixed Installation in Hazardous Areas - G809

  • Flow Velocity
    0.01...35 m/s
  • Measuring Functions
    Physical Quantities: operating volumetric flow rate, standard volumetric flow rate, mass flow rate, flow velocity
  • Data Logger
    Capacity > 100 000 measured values
  • Number of flow measuring channels
    1, optional: 2
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FLUXUS G809 - The ultrasonic gas flow meter for operation in hazardous areas

The FLUXUS G809 is FLEXIM's dual channel ultrasonic clamp-on flow meter for bi-directional flow measurement of gases in hazardous areas ( ATEX, IECEx Zone 1 and FM Class I, Div. 1 approved).

With its flameproof housing and the corrosion resistant transducers residing inside the rugged VARIOFIX C mounting fixture, ensuring a permanent contact pressure and high mechanical stability, the FLUXUS G809 series is perfectly suited for every demanding industrial application.

The FLUXUS G809 gas flow meter allows for an inherently bi-directional gas flow measurement of operational and standard volume flows. As the transducers are mounted on the outside of the pipe wall, the system does not suffer from wear and tear or clogging, can't be a risk for leaks and will not cause any pressure drops inside the pipe.

Technical Data:

General Specification
flow velocity

0.01...35 m/s, depending on pipe diameter

repeatability  0.15 % of reading ±0.01 m/s

all acoustically conductive gases,
e.g. nitrogen, air, oxygen, hydrogen, argon, helium, ethylene, propane

Accuracy (volumetric flow rate) 

± 1...3 % of reading ±0.01 m/s depending on application
± 0.5 % of reading ±0.01 m/s with field calibration

housing material cast aluminum, special offshore coating
Transmitter degree of protection IP66
number of flow measuring
1, optional: 2
display 2 x 16 characters, dot matrix, backlight
physical quantities operating volumetric flow rate, standard volumetric flow rate, mass flow rate, flow velocity
totalizer volume, mass
Data Logger capacity > 100 000 measured values
loggable values all physical quantities, totalized values and diagnostic values
power supply

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

Communication Interface

- process integration (optional): Modbus RTU or HART

- diagnosis: RS232

Outputs Current, Frequency, binary

serial data kit (optional) 

software (all Windows™ versions)

- FluxData: download of measurement data, graphical presentation, conversion to other formats (e.g. for Excel™)

- FluxDiag (optional): online diagnostics and report generation

- FluxKoef: creating medium data sets

- FluxSubstanceLoader: upload of medium data sets

Explosion Protection

For Transmitter: Zone 1

For Transducer: Zone 1 

Chemical Industry

Hydrocarbon Products Handling

Gas Exploration and Processing