The EE771 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 measure the consumption of compressed air, nitrogen, oxygen, CO2, helium, argon or other non-corrosive gases. The measurement ball valve permits easy installation and removal with only a short interruption of the flow.
EE771 flow meter employs the well proven E+E hot-film sensor element with high immunity to contamination, which leads to outstanding long-term stability and accuracy even under harsh operating conditions.
With wide measuring range from 0.5 to 200 Nm/s (100...39370 SFPM) (1:400) and fast response time, one and the same flow meter model can be employed throughout the entire gas supply system. It records accurately even the smallest flow which represent an essential prerequisite for calculating consumption costs or for finding leaks.
Every E+E flow meter undergoes a precise factory calibration procedure at a pressure of 7 bar (102 psi), the corresponding calibration certificate is included in the standard scope of supply.
The EE771 flow meter is available with an additional MODBUS RTU or M-BUS (Meter-Bus) interface.
- Measurement ball valve for rapid installation and removal with only a short flow interruption
- Remote, interchangeable probe for easy mounting
- Pipe diameter DN15 - DN50 (1/2" - 2") P
- ressure range up to 16 bar (232 psi) PN16
- Wide measuring range up to 200 Nm/s (39370 SFPM)
- Bus interface for MODBUS RTU or M-BUS
standardized volumetric flow, mass flow, standardised flow, temperature, consumptionMeasured values
0.5 - 200 Nm/s (100…39370 SFPM)Measuring range
±1.5 % of the measured valueAccuracy
DN15 up to DN50 (1/2" - 2")Pipe diameter
0-10 V, 0/4-20 mA, Pulse, Switch, Modbus RTU or M-BusOutputs
18 - 30 V AC/DCSupply
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EE771 Datasheet(1544.56 kb)
EE771 Manual(5341.51 kb)
Relabeling in case of product configuration change(1339.66 kb)
EE77x Configuration Software(8710.28 kb)
Modbus Application Note AN0103(158.85 kb)
Videos - Mass flow meter(40017.54 kb)
Modular, compact in-line flow meter for DN15, DN20 and DN25
With three different gauge mounting blocks, one and the same transmitter unit can be employed in pipes with diameter DN15, DN20 and DN25. Outstanding measuring accuracy due to multi-point factory adjustment at the common compressed air pressure 7 bar (102 psi).
Inline Mass flow meter DN40 – DN80
Multifunctional inline mass flow meter for DN40 - DN80 (1 1/2" - 3") up to 40 bar (580 psi). Gauge mounting block with hot tap valve for installation and removal without interruption of the flow. Mounting possibility for pressure and dew point sensors.
Connecting Cable, 5 pins - 2m
Connecting Cable, 5 pins - 5 m
Connecting Cable, 5 pins - 10 m