E+E EE771, EE772 Specifications
EE771/EE772
Inline Flow meter for compressed air and gases
The inline flow meter EE771/EE772, based on the measurement
principle of thermal mass flow, is ideally suited for the measurement of flow in pipelines DN15 (1/2”) up to DN80 (3”). Measurement of for instance the usage of compressed air, nitrogen, CO
O2, argon or other non-corrosive, non-flammable gasses.
The flow meters are setting new standards in terms of measurement accuracy and reproducibility thanks to their applicationspecific adjustment during production. As such, the EE771/
EE772 is adjusted under a pressure of 7 bar.
The unique mounting concept with a measurement valve with
shut-off function permits rapid installation and removal of the
device for periodical calibration. 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.
flow sensor
,
2
EE771 Compact
DN15 (1/2“) - DN80 (3“)
detail
Two outputs are available, for further processing of the measure-
EE772 remote probe
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 ow meter can be congured conveniently, to meet the requirements of the application with the standard conguration soft-
ware and the integrated USB interface.
Attribute
Sensor exchange under pressure
with short ow interruption
Sensor exchange under pressure
without ow interruption
pipeline DN15...DN50 (1/2“...2“)
pipeline DN40...DN80 (1 1/2“...3“)
Additional assembly of dew point-
and pressure sensors
max. working pressure 16 bar 232 PSI
max. working pressure 40 bar 580 PSI
EE771 EE772
Functionality of the software:
• Conguration 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
Typical Applications Features
Measurement of consumption of compressed air
Compressed air counter
Mass flow measurement of industrial gases
quick sensor exchange at line pressure
Bus interface for Modbus RTU or M-Bus
high accuracy ± 1.5 % of reading
factory adjustment under pressure
exceptional reproducibility
broad working range of 1:400
very service friendly
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v4.6 / Modification rights reserved
EE771/EE772
EE771/EE772
EE771 - Measurement valve with shut-off function
The measurement valve with shut-off function allows the exact alignment
of the sensing head within seconds during instalment and removal, with
only interrupting the process flow for a short moment.
The measurement valve is suitable for pressures up to 16 bar
(232 PSI) and
available for pipe diameters DN15 (1/2") to DN50 (2").
EE772 - Gauge mounting block with hot tap valve
The unique assembly concept with one mounting valve permits simple
installation and removal of the sensors for regular calibration, and also
ensures a high level of measurement accuracy via precise and reproduc-
ible positioning of the ow sensor in the pipeline.
The gauge mounting block with hot tap valve is used in applications where
ow interruption is not permissible. The ow meter can be removed for
calibration or maintenance with no ow interruption.
The gauge mounting block with hot tap valve assembly is suitable for applications up to 40 bar (PN40) and is available for line sizes of DN40 (1 1/2“)
to DN80 (3“).
The additional option of integrating dewpoint or pressure sensors saves
on installation costs. The gauge mounting block with hot tap valve makes it easy to set up a comprehensive
compressed air monitoring system.
measuring remove
Construction
The ow meter consist of the transmitter and the mounting valve. The transmitter is modular and consist of the
probe and the evaluation electronics. The measurement probe contains the sensor element and the measurement electronics, in which the data of the factory calibration is stored. The enclosure with the signal conditioning
is mounted either on the measurement probe (compact) or is remote with a sensor cable up to 10 meter
evaluation electronics
with optional display
quick coupling (accessory)
probe with sensor and
measurement electronics
Measurement valve with
shut-off function
EE771
hot tap valve
EE772
Gauge mounting
block
sampling cell for dew point
sensor (accessory)
dew point sensor
EE371 or EE355
(accessory)
(33 feet).
Measurement of consumption (totalizer)
The EE771/EE772 holds an integrated counter for the usage. The amount is indicated in the display and
stored; the data will not be lost due to a power outage. The availability of the consumption amount as a free
congurable pulse output is another helpful feature.
EE771/EE772
v4.6 / Modification rights reserved
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