The Portable Gas Flow Meter


Flow channels


Operating temperature of the transmitter

-20°C … +60°C

Degree of protection

Electronic unit: NEMA 4X / IP65 acc. to EN60529
Transport case: NEMA 6 / IP67 acc. to EN60529


Li-Ion, 7.2 V/4.5 Ah, > 14 hours operating time

Inputs and outputs

Standard Version

Inputs: –
Outputs: 2 x current, 2 x binary

Inputs and outputs

Multifunctional Version

Inputs: 1 x temperature (Pt100 / Pt1000), 2 x current, 1 x voltage
Outputs: 2 x current, 2 x binary, 1 x frequency

Calculation of the standard volume flow based on AGA-8 / ISO 12213-1


Media temperature

-40°C … 100°C

Pipe diameter range

6 mm … 2100 mm

Operating pressure range

from atmospheric pressure upwards for plastic pipes from 3 bar upwards for metal pipes, no upper pressure limitation

Flow velocity range

0,01 … 35 m/s (dependent on pipe size)

Measurement accuracy

1% … 3% of reading +/- 0,01 m/s, depending on application
0,5% of reading +/- 0,01 m/s, field calibrated

Additional Notes

The G601 is also able to measure liquids. Please consult the F601 Specifications sheet.


  • Non-invasive flow measurement for precise bi-directional, highly dynamic operational and standard volume flow
  • Portable, easy-to-use gas flow meter with 2 flow channels, multiple inputs/outputs and an integrated data logger with a serial interface 
  • Automatic loading of calibration data and transducer detection reducing set-up times and providing precise, long-term stable results
  • Li-Ion battery providing up to 14 hours of remote measurement operation
  • Highly Accurate due to matched and paired as well as temperature compensated transducers
  • Transducers available for a wide range of inner pipe diameters (7 mm… 1600 mm)
  • Proven clamp-on technology, transducers resistant to dust and humidity
  • Probe for wall thickness measurement available
  • Water and dust-tight; resistant against oil, many liquids and dirt
  • Robust, water-tight (IP67 ) transport case with comprehensive accessories
  • QuickFix for fast mounting of the flow transmitter in difficult conditions