The renewal of 30 years supply record GF series gas flowmeter. Equipped with ultrasonic thermometer, widescreen display and multi-level output interface. Maximize the performance of GF-2500, controls, and monitors any gas flow save energy and cost.

sonic gf 2500 ultrasonic gas flow meterFeatures

  • Wide-screen LCD and various display function
  • High noise tolerance design
  • No pressure loss
  • Various output port (analog x2, digital x1, contact x4)
  • Automatic pressure and temperature correction
  • Easy replacement with the compatibility of the existing sensors.
  • Wider measurement range



  • Fluid Condition: Gas and Steam
  • Applicable pipe diameter: Nominal diameter 50mm ∼ 5000mm (*1)
  • Spool piece :
    • Pipe diameter: 50mm∼500mm (*2)
    • Flange: JIS10K standard (*3)
    • Material: SGP, STPG, SUS316, SPTY (*4)
  • Socket: Standard type :
    • Screw Type
    • Flange Type (Screw type with sensor)
    • Flange Type (Large sensor type)

Sensor Probe

  • Sensor Probe :
    • Gas :
      Standard (Screw type) Large ( Flange Type)
      Nominal Diameter 50mm∼10000mm (*5) 1000m∼(*5)
      Temperature -30ºC∼180ºC -30ºC∼180ºC
      Pressure -0.05Pa∼1MPa (0.5∼10kgf/cm³) -0.05Pa∼1MPa (0.5∼10kgf/cm³)
    • Steam : Standard (Flange type) 1MPa (10kgf/cm³) type
    • Custom (*6)
  • Seal :
    • Probe fittings: Combine with gas seal unit
    • Gas seal unit: Standard, steam, large, custom
    • Gas Seal Adaptor: instead of a gas seal unit (not used)
  • Installation Requirement :
    • Upstream side: 15D
    • Downstream side: 5D or more (D is inner diameter)
  • Cable: Distance from sensor probe to converter, 6m or 10 (standard)

Baca Juga :


  • General :
    • Measuring method: Ultrasonic transit time flow meter
    • Chordal path : 1 path or 2 path (option)
    • Traverse: Z or V
    • Measurement compensation range: temperature ±25ºC, pressure ±30%
    • Accuracy : ±1.0% FS (flow velocity 5 ∼ 60m/s)
    • Reproducible : 0.2%
    • Flow velocity resolution : less than 0.5mm/s
    • Averaging : Default 10 sec (0.5∼180 sec variable)
    • Ultrasonic Thermometer: Measure temperature (in case of air) by ultrasonic transit time
    • Ambient temperature: -10 ∼ +50ºC
  • Power Supply :
    • Power supply: AC100V±10%, 50/60Hz, AC115V, 220V (option)
    • Surge protection: Built-in surge absorber
    • Power dissipation: Max.25W
  • Output
    Analog output1 Range: DC4∼20mA,
    Over range: DC0∼24mA
    Load resistance: Less than 1000Ω
    Analog output2 reverse flow, temperature, pressure
    Range: DC4∼20mA, isolated
    Over range: DC0∼24mA
    Load resistance: Less than 1000Ω
    Pulse output1 Integrated pulse
    Open collector standard 0V, 0.2A
    Pulse width: 1.6ms or 50ms
    Pulse output2 Integrated pulse, alarm, normal and reverse flow, upper I and lower limb
    Open collector standard 30V, 0.2A
    Pulse output3 Alarm, normal and reverse flow, upper I and lower limit
    Open collector standard 30V, 0.2A
    Pulse output4 Alarm, normal and reverse flow, upper I and lower limit
    Open collector standard 30V, 0.2A
    Power supply for pressure and temperature DC24V +/-0.5V 0.2A
    Digital output RS422 x 1
    Input Temperature : DC4 ∼ 20mA
    Pressure: DC4∼20mA
    Display LCD : 128 x 240 dos LED back right
    Character: Alphanumeric, mathematical symbol (ex, +, -, Σ)
    Display content :

    • Measurement display
    • Instantaneous flow rate (analog1, 2)
    • Input temperature, pressure, ultrasonic temperature meter
    • It can display the content of 4 in all contents
    Configuration view: diameter, temperature, pressure, flow range
    Adjustment view: zero-point adjusting, change of time constant, low-cut


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