Datasheet

120
v4.0 / Modification rights reserved
The inline flow meter EE771/EE772, based on the measurement
principle of thermal mass flow, is ideally suited for the measure-
ment of flow in pipelines DN15 (1/2”) up to DN80 (3”). Measurement
of for instance the usage of compressed air, nitrogen, CO2, oxy-
gen, helium or other non-corrosive, non-flammable gasses.
The flowmeters are setting new standards in terms of measure-
ment accuracy and reproducibility thanks to their application-
specific adjustment during production. As such, the EE771/
EE772 is adjusted under a pressure of 7 bar.
The unique mounting concept with a mounting valve permits
rapid installation and removal of the device for periodical calibra-
tion. It simultaneously ensures high measurement accuracy
through exact and reproducible positioning in the pipe.
The core design of the flow meter is based on the E+E hot film
sensor element, which is produced using the most modern thin
film technology. This flow sensor features excellent long-term
stability, a fast response time and an extremely high degree of
reliability.
Two outputs are available, for further processing of the measure-
ment data. Depending on the application, these outputs can be
configured as analogue (current or voltage), switch output or as
pulse output for the measurement of the consumption.
Bus interface for Modbus RTU or M-Bus
Optionally, the ow meter is available with an additional bus
interface for MODBUS RTU or M-BUS (Meter-Bus).
Configuration software
The owmeter can be congured conveniently, to meet the re-
quirements of the application with the standard conguration soft-
ware and the integrated USB interface.
Functionality of the software:
• Conguration of the output (scale / set point)
• 2-point user calibration for ow and temperature
• Readout of the counter values
• Reset of min / max values and counter
• Indication of the measurement value
EE771/EE772
EE771/EE772
Inline Flowmeter for compressed air and gases
DN15 (1/2“) - DN80 (3“)
EE771 Compact
EE772 remote probe
Measurement of consumption of compressed air
Compressed air counter
Mass flow measurement of industrial gases
Typical Applications Features
high accuracy ± 1.5% of reading
exceptional reproducibility
quick sensor exchange at line pressure
broad working range of 1 : 400
very service friendly
Bus interface for Modbus RTU or M-Bus
detail
flow sensor
Attribute
EE771 EE772
Sensor exchange under pressure
with short ow interruption
4
Sensor exchange under pressure
without ow interruption
4
pipeline DN15...DN50 (1/2“...2“)
4
pipeline DN40...DN80 (1 1/2“...3“)
4
Additional assembly of dew point-
and pressure sensors
4
max. working pressure 16 bar 232 PSI
4 4
max. working pressure 40 bar 580 PSI
4