SI-3404 Ultrasonic Gas Flow Meter

SI-3404 Ultrasonic Gas Flow Meter is produced by advanced German technology.

For Natural Gas flow measurement, this is a new type of precision measuring instrument, with high precision and better price.

Easy installation for pipeline, widely applied to gas flow measurement.

MediumGAS, Natural Gas
LPG gas, natural gas, Oxygen, nitrogen, air etc.

1.4% , Repeatability: 0.4%

1.0% , Repeatability: 0.2%

OutputPulse / RS485
Pressure1.6Mpa, 2.5MPa, 4.0MPa, 16MPa, 40MPa
ProtectionIP 65
  • Made with German Advanced Technology
  • Multiplex Dual Channel and Six Channel Measurement
  • Eddy Current and Asymmetric Flow Detection
  • Laminated shielding of electric and magnetic fields, high noise immunity
  • Zero drift automatic correction, accuracy is not affected by the environment
  • Measurement accuracy grade: 1.0
  • Conform to international standard ISO CD 17089
  • Comply with us standard A.G.A.Report No.9
  • Ultra-wide range ratio: 1:600
  • Ultra-low “zero” starting flow rate
  • The metering range can cover Roots meter and turbine meter.
  • Double backup lithium battery power supply
  • High precision temperature and pressure compensation, volume correction
  • Intelligent switching of various gas working conditions and standard temperature and pressure
  • Mass storage, can save data for one year
  • Add mechanical counter, data will never be lost.

SI-3404 Ultrasonic Gas Flow Meter

 Item PUA Gas Ultrasonic Flow Meter

1.4% , Repeatability: 0.4%

1.0% , Repeatability: 0.2%

Diameter (MM)DN25-DN300
Input signal

Flow signal: 200 KHz±10%

Temperature signal: analog signal output by temperature sensor

Pressure signal: analog signal output by pressure sensor

OutputPulse / RS485
Press1.6Mpa, 2.5MPa, 4.0MPa, 16MPa, 40MPa
Power24VDC or 3.6V Lithium battery
Power consumption

Internal power supply: average power consumption ≤1.5mW,

two lithium batteries can be used continuously for more than 6 years.

External power supply: average power consumption ≤1W


In addition to regular products, we support customization

SI-3121-         Note
DiameterDNXX        DN25~DN3000(mm)
StructureF       Remote type (standard with 10m cable)
Y       Compact type
     S     316L
     T     Titanium(Ti)
 Electrode D     Tantalum(Ta)
     C     Hastelloy C(HC)
     P     Platinum iridium alloy
      1    110~240V AC
 Power supply 2    24V DC
      3    Lithium battery(without output signal)
 Output signal 0   No output
   1   4-20m/pulse output
        H  HART Protocol
 Communication   R  MODBUS RS485
        G  GPRS
 Installation way    J Without a ball valve
     B With a ball valve

Intelligent gas ultrasonic flow meter can be widely used in:

petroleum, chemical industry, electric power,
metallurgy, urban gas supply and other industries to measure the flow of various gases,
is currently the oilfield and urban natural gas transmission,
and distribution measurement and trade measurement of the preferred product.
gas ultrasonic flow meter application
Aug 15, 2019 at 13:28 pm


This ultrasonic gas flow meter measures natural gas and improves the reliability of the system. Really Maintenance-free, thank you for your product.

Techincal Support

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    Request For Quote

    2 thoughts on “SI-3404 Ultrasonic Gas Flow Meter”

    1. Hello.

      I would like to use an ultrasonic flow meter on our client’s pipeline to gather data by Modbus RTU.Do you provide us a proper ultrasonic meter for 6 “, under 19 barg operated pressure and output should be compensated with PT


      • Dear Huseyin Mizan, Thanks for your info.
        First of all, we can surely offer you the ultrasonic flow meter.
        And I will check the detail with you by email.

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