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Gas flowmeters Turbo Flow GFG-F

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Measuring volumetric flow rate of gas transported via pipelines in gas supply / gas distribution systems. 

Gas flowmeters Turbo Flow GFG-F are used for commercial and technological metering natural gas, single- and multi-component gases and non-aggressive gases (argon, nitrogen).

Measurement method:

The flowmeter's operating principle is based on the dependence of the oscillation frequency of the measured medium jet in the flowmeter's sensitive element on volumetric flow rate of the gas flowing through it. A fluid oscillator is used as the sensitive element of the flow transducer. The partial flow rate, flowing through the sensitive element, is ensured by the flow rate former. The oscillation frequency, proportional to the flow rate, formed in the sensitive element fluid oscillator, is received by the piezoelectric transducer and converter into an electric frequency signal coming to the electronic unit of the flow transducer. In the electronic unit the electric frequency signal, delivered from the piezoelectric transducer, is converted into a digital signal which determines the gas volume flow rate in the working conditions.

Purpose

Flowmeters of Turbo Flow GFG series are used for:

  • volumetric flow rate measurement;
  • mass flow rate measurement;
  • calculating the accumulated gas volume;
  • gas volume correction by temperature and pressure

Advantages of method:

  • Stability of characteristics in time and metrological accuracy of 1%;

  • The wide dynamic range (up to 1:160) allows for accounting of the gas flow on a single nominal diameter of the measuring pipeline (instead of installation of two meters for the summer and winter gas volumes);

  • It is possible to measure very low flow rates from 0.016 m3/h;

  • Can be used together with a standard orifice on diameters up to 1,700 mm;

  • Insensitive to pneumatic loads and pulsations;

  • Absence of moving parts exposed to wear enhances reliability and extends service life.

Instrument functions :

  •  Flow rate measurement;
  • Calculating volumetric and mass flow rate of gas reduced to standard conditions;
  • Temperature measurement;
  • Pressure measurement;
  • Archiving in non-volatile memory and display of the results of measurements and calculations of volume, flow rate, temperature and pressure and operation parameters;
  • Transmission of archive information and setting parameters to the flow measurement cabinet, printer, computer or data transmission device via the RS-232 or RS-485 interface;
  • A built-in data transmission unit (optional).

Configuration options:

Based on components and performed functions

  • Configuration  С0 – includes a flow transducer, a flow rate former;
  • Исполнение С1Т - includes a flow transducer, a flow rate former, temperature transducer, parameter computer;
  • Configuration  С1ТР - includes a flow transducer, a flow rate former, temperature transducer, pressure transducer, parameter computer;
  • Configuration  С1ТРП - includes a flow transducer, a flow rate former, temperature transducer, pressure transducer, parameter computer, interface for connection of external transducers;
  • Configuration  С2ТР - includes a flow transducer, a flow rate former, temperature transducer, pressure transducer, parameter computer, external terminal;
  • Configuration  С2ТРП - includes a flow transducer, a flow rate former, temperature transducer, pressure transducer, parameter computer, external terminal, interface for connection of external transducers.

Based on explosion protection

  • 0 Ex ia IIC T4 Ga (0 Ex ia IIC T6 Ga)
  • 1 Ex d [ia Ga] IIC T4 Gb (1 Ex d [ia Ga] IIC T6 Gb)

By power supply

  • self-contained;
  • 220V.

Modification GFG-F Explosion-proof modification GFG-F Exd

 

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Additional equipment:

Straight sections Flow measurement cabinet

You can order the gas flowmeters turbo flow gfg-f from  dealers  at a good price.

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Technical specifications:

Characteristic Value
Range of gas flow rate measurements, m3/hour from 0.016 to 280,000

Dynamic range Qmin/Qmax

1:100 (special configuration 1:160)
Nominal diameter, mm from 10 to 1,400

Limits of relative error during measurement of volumetric gas flow rate in working conditions, %, in the range:
Qmin < Q < 0.01Qmax:
0.01Qmax ≤ Q ≤ Qmax:

± 1,5
± 1,0

Gas overpressure range, MPa

from 0 to 20

Upper limits of overpressure measurements (ULM), MPa

from  0,0025 to 20

Upper limits of absolute pressure measurements (ULM), MPa

from 0.1 to 20

Limits of permissible relative error during pressure measurement, %

± 0,25

Working range of pressure measurements, % of ULM

from  33 to 100
Gas temperature range, °С from - 50 to + 70

Limits of permissible absolute error during temperature measurement, °С

± (0.15 + 0.002|t|),
where t – measured temperature

Limits of permissible relative error during calculation of gas mass flow rate and weight, volume, volumetric flow rate and volume of gas reduced to standard conditions, %

± 0,02

Limits of permissible reduced error during conversion of measured gas flow rate into output current signal (from 4 to 20 mA), %

± 0,1

Limits of permissible relative error during conversion of gas flow rate into output frequency signal, %

± 0,1

Limits of permissible reduced error during direct current measurement (from 4 to 20 mA), %

± 0,1

Performance specification:

Characteristic Value 
Digital wired interfaces HART, MODBUS RTU
Digital wireless interfaces GSM, GPRS, Bluetooth, IrDA (ИК-порт)
Power supply parameters, V:
  • from built-in battery 7.2;
  • from external power unit from 12 to 18;
  • from ~220 mains ± 22
Power consumption, W, no more than

15,0

Operating conditions:

  • ambient air temperature, °С
  • relative air humidity, %

  • from -50 to +70
  • up to 95

Average mean time between failures, hours, at least

60000

Certificate of type approval (RUS)

Certificate of compliance with Technical Regulations of the Customs Union (RUS)

Software Compliance Certification (RUS)

Certificate of type approval - Turkmenistan (RUS)

Certificate of type approval - Uzbekistan (RUS)

Certificate GAZSERT (RUS)

Certificate of type approval - Kazakhstan (RUS)

Certificate of type approval - Armenia (RUS)

Certificate of type approval - Kyrgyzstan (RUS)