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Gas flowmeters Turbo Flow TFG-S (mobile)

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The Turbo Flow TFG-S flowmeter is used for visiting check measurements of gas flow rate on pipelines of any material. Field metering stations without stationary gas meters detecting unbalance, periodic short-term measurements and monitoring and functional check of controlled meters.

Measurement method:

The hot-wire (thermal) mass method of measurement is based on the dependence of the degree of cooling of a heated sensitive element, placed in the stream, due to flow rate. The heated sensitive element in gas flowmeters is a platinum resistance thermometer.

The instruments maintains in real time the constant difference of temperatures between the heated sensitive element of the hot-wire flowmeter and the thermal converter which measures gas temperature. The power needed for maintaining the constant temperature difference is proportional to the mass speed of the gas flow which passed through the metering section. The current value of gas flow rate is calculated according to the value of dissipated heat power of the hot-wire flowmeter, composition and thermophysical properties of gas, pressure parameters, as well as dimensions of the sensitive element of the primary transducer and pipeline cross-sectional area.

Flowmeter purpose

The Turbo Flow TFG-S flowmeter is used for visiting check measurements of gas flow rate on pipelines of any material.

Field of application

Field metering stations without stationary gas meters:

  • detecting unbalance;
  • periodic short-term measurements;
  • monitoring and functional check of controlled meters

Specific features of flowmeter:

  • Mobility;

  • Measuring pipeline diameter from 50 mm to 1,400 mm;

  • Simple mounting on site


  • High accuracy: relative measurement error not more than 1% throughout the range of operating flow rate, which allows assessing the confidence of readings of the checked meter;
  • Wide dynamic measurement range 1:600. Allows monitoring with a wide range of gas flow rate;
  • Possibility of operational measurements;
  • The possibility of monitoring without coordination with the owner of the checked complex, as well as without shutdown of the process of checked equipment;
  • Allows for monitoring of networks at both oil/gas producing and industrial enterprises;
  • The possibility of use both with natural and associated petroleum gas (including wet);
  • Cost-saving due to the possibility of using on an unlimited number of measurement points;
  • High resistance to temperature overloads;
  • Autonomous operation time not less than 10 hours.

Configuration options

By sensitive element design:

  • No housing;

  • In a housing

Integrated / remote sensitive element for gas temperature measurement:

  • Configuration 00 – for DN from 50 to 400 mm inclusive;
  • Configuration 01 – for DN from 400 to 900 mm inclusive;
  • Configuration 02 – for DN from 900 to 1400 mm inclusive.


  • Available tablet;

  • Available USB-port;

  • Thickness gauge;

  • Tape line;

  • Slide gage;

  • Pressure transmitter;

  • Ruler.

You can order the gas flowmeters turbo flow tfg-s (mobile) from  dealers  at a good price.

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Technical specifications:

Characteristic Value

Measurement range of volumetric gas flow rate under standard conditions, m3/h

from 1.25 to 588,000
Pipeline diameter, mm from 50 to 1,400

Limit of permissible relative error during measurement of volumetric gas flow rate, reduced to standard conditions, %
- using the manufacturer's measuring section
- without using the manufacturer's measuring section 

± 1.0 in the range 0.015 Qmax < Q < Qmax
± 2.0 in the range Qmin < Q < 0.015 Qmax

± 1.5 in the range 0.015 Qmax < Q < Qmax
± 2.5 in the range Qmin < Q < 0.015 Qmax

Gas temperature measurement range, °С

От минус 60°С до плюс 300°С

Limits of permissible absolute error during temperature measurement, °С


where t - measured temperature, °C

Limits of absolute error during time measurement, s

±1 for 24 h
Flow speed range, m/s От 0,03 до 350

Upper limit of overpressure measurements, kPa

up to 600
up to 32

Working range of overpressure measurements, % of ULM

from 33 to 100

Upper limit of absolute pressure measurements, (ULM), MPa

up to 32

Working range of absolute pressure measurements, % of ULM

from 33 to 100

Dynamic range (Qmin/Qmax)


Sensitivity threshold

0,3 Qmin

Limits of permissible relative error during pressure measurement, %


Performance specification::



PT* operating conditions:
- ambient air temperature, °C

From minus 60 to plus 70
Kind of PT* explosion protection Ex ib Gb [ia Ga] IIC T4 Gb
или 1 Ex dib Gb [ia Ga] IIC T4 Gb
Kind of FMC** explosion protection [Ex ib Gb] IIC
Protection degree of PT* as per GOST 14254-96 IP65
Protection degree of FMC* as per GOST 14254-96 IP54
Average mean time between failures, hours, at least 60 000

* PT - primary transducer;

** FMC - flow measurement cabinet.

Download software

NameInstrumentsFiles nameSize,byte
DOTNET 4.0.3


DotNetPack_403ru 124 147 694

TFG, GFG all modifications

TFG-S GFG-F 797 616
TFG-S v2 1

TFG-S Modbus

TFG2-S v2 1 966 152
TFG-S v2 3

TFG-S Modbus (3 primary transducers ) 

TFG2-S v2 3 1 587 504

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

Certificate of type approval - Kazakhstan (RUS)

Software Compliance Certification (RUS)

Certificate GAZSERT (RUS)

Certificate of type approval (RUS)

Certificate of type approval - Turkmenistan (RUS)

Certificate of type approval - Uzbekistan (RUS)

Certificate of type approval - Kazakhstan (RUS)

Certificate of type approval - Armenia (RUS)