FLUXUS G80x
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Technical specification FLUXUS® G801 Ultrasonic gas flowmeters for permanent installation in hazardous areas Especially designed for the stationary use in explosive atmosphere Features • Precise bi-directional and highly dynamic flow measurement with the non-invasive clamp-on technology • High precision at fast and slow flow rates, high temperature and zero point stability • All stainless steel and seawater resistant FLUXUS G801 is ATEX/IECEx certified and thus suited for offshore applications • Automatic loading of calibration data and transducer detection for a fast and easy set-up (less than 5 min), providing precise and long-term stable results • User-friendly design • Transducers available for a wide range of inner pipe diameters and fluid temperatures • ATEX, IECEx approved transducers for hazardous areas available • Measurement is unaffected by gas density, viscosity, composition, dust, humidity, temperature or pressure Applications Designed for industrial use in harsh environments, in gas processing and natural gas extraction, chemical industry and in the petroleum industry. Practical applications: • Measurement on natural gas pipelines and in natural gas storage installations • Measurement of synthesized gas and injection gas • Measurement for the gas supply industry Measurement with transducers mounte

Technical specification

Technical specification Function Measurement principle In order to measure the flow of a fluid in a pipe, ultrasonic signals are used, employing the transit time difference principle. Ultrasonic signals are emitted by a transducer installed on the pipe and received by a second transducer. These signals are emitted alternately in the flow direction and against it. As the fluid in which the signals propagate is flowing, the transit time of the ultrasonic signals in the flow direction is shorter than against the flow direction. The transit time difference, ∆t, is measured and allows the...

Technical specification Number of sound paths The number of sound paths is the number of transits of the ultrasonic signal through the fluid in the pipe. Depending on the number of sound paths, the following methods of installation exist: • reflection arrangement The number of sound paths is even. Both of the transducers are mounted on the same side of the pipe. Correct positioning of the transducers is easier. • diagonal arrangement The number of sound paths is odd. Both of the transducers are mounted on opposite sides of the pipe. In the case of a high signal attenuation by the fluid,...

Technical specification FLUXUS® G801 Standard volumetric flow rate The standard volumetric flow rate can be selected as physical quantity to be measured. It will be calculated internally by: Vn = V ■ p/pN ■ Tn/T ■ 1/K where V n - standard volumetric flow rate V - operating volumetric flow rate pN - standard pressure (absolute value) p - operating pressure (absolute value) K - compressibility coefficient of the gas: ratio of the compressibility factors of the gas at operating conditions and at standard conditions Z/Zn The operational pressure p and the operational...

FLUXUS® G801 Technical specification FLUXUS G801**-A1 G801C24 model code explosion proof offshore device measurement measurement principle flow velocity temperature compensation volumetric flow rate flow transmitter power supply power consumption number of flow measuring channels measuring cycle (1 channel) response time housing material degree of protection according to IEC/EN 60529 ambient temperature menu language transit time difference correlation principle 0.01...35 m/s, depending on pipe diameter all acoustically conductive gases, e.g. nitrogen, air, oxygen, hydrogen, argon, helium,...

Technical specification FLUXUS® G801 1 connection of the interface RS232 outside of explosive atmosphere (housing cover open)

Technical specification thread: 4x M25 cable gland: max. 4x M20 in mm Wall and 2 " pipe mounting kit FLUXUS G801

Technical specification FLUXUS® G801 power supply

FLUXUS® G801 Technical specification power supply

Technical specification Transducers Transducer selection Step 1a Select a Lamb wave transducer: transducer order code GLF 35 pipe wall thickness [mm] Step 1b If the pipe wall thickness is not in the range of the Lamb wave transducers, select a shear wave transducer: transducer order code 11 35 pipe wall thickness [mm] Step 2 Inner pipe diameter d dependent on the flow velocity v of the fluid in the pipe The transducers are selected from the characteristics (see next page). Lamb wave transducers are selected from the left column, shear wave transducers from the right column. Lamb wave...

Technical specification inner pipe diameter and max. flow velocity for a typical application with natural gas, nitrogen, oxygen in reflection arrangement with 2 sound paths (Lamb wave transducers)/1 sound path (shear wave transducers)

Technical specification FLUXUS® G801 inner pipe diameter and max. flow velocity for a typical application with natural gas, nitrogen, oxygen in reflection arrangement with 2 sound paths (Lamb wave transducers)/1 sound path (shear wave transducers) Step 3 min. fluid pressure Example step Step 4 for the characters 4...11 of the transducer order code (ambient temperature, explosion protection, connection system, extension cable) see page 14 Step 5 for the technical data of the selected transducer see page 15 et seqq.

FLUXUS® G801 Technical specification Transducer order code 1,2 3 4 5, 6 7, 8 9...11 12, 13 no. of character

Technical specification FLUXUS® G801 1 depending on application, typical absolute value for natural gas, nitrogen, compressed air 2 shear wave transducer: typical values for natural gas, nitrogen, oxygen, pipe diameters for other fluids on request inner pipe diameter max. recommended/max. extended: in reflection arrangement and for a flow velocity of 15 m/s