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, 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(1516.14 kb)
EE771 Manual(5341.29 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 to DN50
The modular inline flow meter is dedicated for metering and monitoring of compressed air and technical gases in DN15 to DN50 (1/2" - 2") pipes. Outstanding measuring accuracy due to multi-point factory adjustment at 7 bar (102psi) air pressure.
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
What is the difference between Modbus RTU and Modbus TCP/IP?
The main difference is the hardware interface. The Modbus RTU protocol runs on RS485 Hardware while Modbus TCP/IP protocol on Ethernet hardware.
What calibration certificate is included in the standard scope of supply of the E+E mass flow sensors?
The standard scope of supply of E+E mass flow measurement devices includes an inspection certificate according DIN EN 10204 - 3.1. For details on calibration certificates please see our white paper "Calibration and Traceability in Measuring Technology".
Can E+E supply an accredited calibration certificate with the mass flow transmitter?
Accredited calibration certificate formass flow is available upon request, please see our calibration website.
How can I adjust the mass flow transmitter?
For readjusting the mass flow sensor you need first of all a reliable reference. In case this is not available, please return the device to E+E for service. Otherwise see the readjustment procedure in the operation manual of the specific E+E mass flow sensor available at www.epluse.com
E+E mass flow measure the Normal Volume referring normal conditions 0 °C and 1.013 mbar (14,7 psi, 32 °F), according standard DIN 1343. Can I change the normalization parameters according my standard definitions?
Yes. Use the E+E Product Configuration Software, section "Process Parameters". See operation manual of the specific E+E device.
What is the difference between a 2 wire and a 3 wire current output?
Transmitter with "two-wires" technology receive the power from the process, and the signal is carry on return wire (closed current loop). With technology "three-wires" the power supply is separate from current output: 2 wires are the power supply and third carry the signal.