Mass flow meter for compressed air & gases


EE-771 flowmeter for compressed air and gases: Measurement of consumption of compressed air, nitrogen, CO2, oxygen, helium or other non-corrosive, non-flammable gasses.

Installation video

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Mass flow meter

The EE-771 is a thermal mass flow meter for compressed air and gases. Irrespective of pressure and temperature, the EE771 flow meter registers mass flow, volumetric flow or standard flow. The flow meter can be used effectively to measure the consumption of compressed air, nitrogen, oxygen, CO2, helium or other non-corrosive gases.
The assembly concept with the ball valve permits rapid installation and removal with only a short interruption of the flow. The heart of the flow meter is an E+E hot-film sensor element that, thanks to its high immunity to contamination, guarantees exceptional long-term stability and outstanding accuracy even under the harshest operating conditions.
The flow meter’s extensive measuring range from 0.5 to 200 Nm/s (1:400) and fast response characteristics make it possible to carry out measurements throughout the entire supply system with one and the same device. Even the smallest flow rates are accurately recorded – an essential prerequisite for calculating consumption costs or for finding leaks.
At the factory, every flow meter undergoes a strict calibration procedure on a flow calibration installation at a pressure of 7 bar. The outstanding measuring accuracy is confirmed by the calibration certificate that comes with the device.
  • Accuracy +/-2.5%
  • High turndown, good accuracy and low cost up to 1:400
  • LCD display with flow rate and totalliser
  • power 18-30 V AC/DC
  • Output  4-20mA, 0-10V + pulses for totalliser
  • Pipe reqt – 8-10D upstream 3-5D downstream
  • Up to 16 bar – calibrated to 6.9bar standard up to 80ºC process
For DN40 – DN80 select EE772, inline mass flow meter. Check the data sheet for more details

 Downloads:   Data sheet       User manual

Additional information

Pipe size

DN20, DN50