E+E EE771, EE772 Operating Manual
EE771 Series
FLOW METER for
COMPRESSED AIR and GASES
BA_EE771_e // V4.1 // technical data are subject to change // 193296
Manual
Hardware and Software
E+E Elektronik® Ges.m.b.H. doesn't accept warranty and liability
claims neither upon this publication nor in case of improper treatment
of the described products.
The document may contain technical inaccuracies and typographical
errors. The content will be revised on a regular basis. These changes
will be implemented in later versions. The described products can be
improved and changed at any time without prior notice.
© Copyright E+E Elektronik
®
Ges.m.b.H.
All rights reserved.
USA
FCC notice:
This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and,
if not installed and used in accordance with the installation manual, may cause
harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
Caution:
Any changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate this device.
CANADIAN
ICES-003 notification:
This Device B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du
Canada.
2
Table of contents - HARDWARE
1. GENERAL
1.1. Safety Instructions .................................................................................................. 4
1.1.1. Intended Use ................................................................................................... 4
1.1.2. Installation, start up and control
1.2. Environmental aspects .............................................................................................. 5
............................................................................................................. 4
.................................................................................. 5
2. PRODUCT DESCRIPTION ....................................................................................... 6
3. INSTALLATION ...................................................................................................... 7
3.1. Mounting dimensions ............................................................................................... 7
3.1.1. Model Compact (EE771-A and EE771-B) ......................................................................... 7
3.1.2. Model remote sensing probe (EE771-C)
3.2. Determining installation site ......................................................................................... 8
3.2.1. Process pressure ............................................................................................... 8
3.3. Installation position .................................................................................................. 9
3.4. Required length of straight pipe..................................................................................... 10
3.5. Assembly of the measurement ball valve ........................................................................... 11
3.5.1. Assembly without flow meter, but with screw cap instead (blind cap) ................................................ 11
3.5.2. Shut off the measurement ball valve
3.6. Installation of the flow meter sensing probe ........................................................................ 12
3.6.1. Flow direction................................................................................................... 12
3.6.2. Installation of the sensing probe
.......................................................................... 7
.............................................................................. 11
.................................................................................. 12
4. ELECTRICAL CONNECTIONS .................................................................................13
4.1. Connection diagram ................................................................................................. 13
4.1.1. Relay and pulse output, internal switching ........................................................................ 13
4.1.2. Connection with optional plug for power supply and outputs (order code Q)
4.2. Bus Output (optional) ............................................................................................... 14
4.2.1. M-Bus (Meter-Bus) .............................................................................................. 14
4.2.2. Modbus RTU
4.2.3. Data Transmission
4.2.4. Addressing
................................................................................................... 15
.............................................................................................. 15
..................................................................................................... 15
.......................................... 13
5. CONTROL COMPONENTS ...................................................................................... 16
5.1. Jumper J1 and J2 ................................................................................................... 16
5.2. Digital interface USB ( for configuration)............................................................................ 16
5.3. Display / Indicator with keypad (optional) ........................................................................... 16
5.3.1. Indication of the analogue and pulse output ....................................................................... 17
5.3.2. Indication of the switch output
5.3.3. Indication of the MIN / MAX values
5.3.4. Reset of the consumption counter or the MIN / MAX value
5.3.5. Maximum consumption counter
.................................................................................... 17
............................................................................... 17
......................................................... 18
.................................................................................. 18
6. ERROR MESSAGES .............................................................................................. 18
7. MAINTENANCE ..................................................................................................... 19
7.1. Removal of the sensing probe of the flow meter ................................................................... 19
7.2. Cleaning of the sensor of the flow meter ........................................................................... 19
8. REPLACEMENT PARTS / ACCESSORIES .................................................................19
8.1. Order Code Replacement Sensor .................................................................................. 19
8.2. Order Code Miscellaneous .......................................................................................... 20
9. TECHNICAL DATA .................................................................................................20
9.1. Factory setting of outputs ........................................................................................... 21
Table of contents - SOFTWARE
1. General ................................................................................................................ 22
2. Installation ........................................................................................................... 23
2.1. Configuration of the USB Interface (VirtualCOM) ................................................................... 23
3. User Interface ....................................................................................................... 24
4. Menu toolbar ........................................................................................................ 25
4.1. File .................................................................................................................. 25
4.2. Transmitter .......................................................................................................... 25
4.3. Extras ............................................................................................................... 25
5. Input Screen ......................................................................................................... 25
5.1. Output 1, Output 2 .................................................................................................. 25
5.1.1. Output mode ................................................................................................... 25
5.1.2. Measurand
5.1.3. Units
5.1.4. Output mode – analogue
5.1.5. Output mode – switch (relay)
5.1.6. Output mode – pulse
5.2. Minimum flow shutdown ............................................................................................ 27
5.3. Display .............................................................................................................. 28
5.4. Adjustment .......................................................................................................... 28
5.4.1. 1-point adjustment .............................................................................................. 28
5.4.2. 2-point adjustment
5.4.3. Reset to factory settings
5.5. Measuring values overview ......................................................................................... 30
5.5.1. Reset of the MIN / MAX values .................................................................................. 30
5.5.2. Reset of the consumption counter (totalizer)
5.6. Setting up Process Parameters ..................................................................................... 30
5.6.1. Change the Process Gas ........................................................................................ 30
5.6.2. Changing the standard conditions
5.6.3. Pressure compensation
5.7. External pressure transmitter for pressure compensation .......................................................... 31
5.8. Bus configuration.................................................................................................... 31
..................................................................................................... 25
........................................................................................................... 25
........................................................................................ 26
.................................................................................... 26
............................................................................................ 27
.............................................................................................. 29
......................................................................................... 29
....................................................................... 30
................................................................................ 31
......................................................................................... 31
3
1. GENERAL
This manual is a part of the scope of supply and serves to ensure optimal operation and functioning of the
equipment.
For this reason, the manual must be read before start-up.
Therefore, it is necessary that this manual is read and understood by those responsible for the handling,
installation, and maintenance of the equipment.
This manual may not be used for competitive purposes or passed on to third parties
without the written consent of E+E Elektronik® Ges.m.b.H.
It is permitted to make copies for personal use.
All information, technical data and illustrations contained in these instructions are based on
information available at the time of publication.
Symbol Clarification
This symbol indicates safety instructions.
The safety instructions have to be carried out unconditionally. If disregarded loss, injury, or damage may be
inflicted to people and property. In any case E+E Elektronik® Ges.m.b.H. cannot be hold responsible.
This symbol indicates attention.
The note should be observed to achieve an optimal functioning of the equipment.
1.1. Safety Instructions
1.1.1. Intended Use
The flow meter is intended to be used for the measurement of air and other non-corrosive gases in pipelines
only. Consult the factory first before the measurement of wet or filthy gases.
The design of the flow meter allows for the EE771 to be installed in a pressurized system up to PN16 – is
16 bar (230 psi).
Prior to the start of the installation, the system has to be depressurized. Before the installation or
removal of the sensing probe or the screw cap, the measurement ball valve should be closed.
Mounting, electrical installation, putting in operation and maintenance should only be done by qualified
personnel.
The use of the flow meter EE771 in any other way than described in this manual bears a safety risk for people and the entire measurement installation and is therefore not allowed.
The manufacturer cannot be hold responsible for damages as a result of incorrect handling, installation, and
maintenance of the equipment.
To avoid health risks or damage to the equipment, the installation should not be operated on with tools, which
are not specifically mentioned or described in this manual.
Excessive mechanical stress and inappropriate handling must be avoided.
A short interruption of the flow using the measurement ball valve cannot be avoided when exchanging the
sensing probe.
The flow meter can only be utilized in accordance with the conditions defined in the technical data. Otherwise,
inaccuracies of the measurement will occur and equipment failures cannot be ruled out.
For the safety of the user and for the functionality of the equipment the recommended steps by the
manufacturer to put into operation, to test and to maintain should be taken and completed.
4
1.1.2. Installation, start up and control
The flow meter is designed and built in accordance with the latest state in technology, tested adequately and
has been shipped from the factory in good order and condition.
As the user, you are responsible to comply with all applicable safety regulations amongst others:
• Instruction for the installation
• Local standards and codes
The manufacturer has taken all measures to assure safe operation. The user has to make sure that the
equipment is positioned and installed in such a way that safe operation is not impaired.
The equipment is tested in the factory and shipped in good order and condition.
This manual contains information and notes of caution, which have to be adhered to by the user to assure a
safe operation.
• Mounting, electrical installation, putting into operation and maintenance should only be done by
qualified personnel. The plant operator should authorize qualified personnel to operate on the
installation.
• It is necessary that this manual is read and understood by these professionals and that they follow
the instructions as detailed in this manual.
• Check all connections of the entire installation thoroughly, before putting the system into operation.
• Disconnect the device from power supply before opening or closing to avoid damages.
• Do not put a damaged product into operation and make sure that that does not happen
inadvertently.
• A malfunction of the equipment should only be handled and fixed by authorized and qualified
personnel
• If it is not possible to repair the malfunction, put the equipment out of operation and make sure that
it cannot be put back into operation again.
• Repairs not described in this manual may only be carried out by the manufacturer or by the
respective service organization.
Disclaimer of Liability
The manufacturer or their delegated representative is only liable in case of intend or gross negligence. The
accountability is limited to the value of the order issued at the time to the manufacturer.
The manufacturer is not liable for damages, originated from disregarding the safety instructions or violating
the instructions of the manual or operating conditions.
Consequential damages are excluded from the any liability.
1.2. Environmental aspects
The products from E+E Elektronik® are developed and designed in due consideration to the importance of the
protection of the environment. Therefore, disposal of the product also should not lead to pollution of the
environment.
The single-variety components must be separated before the transmitter is disposed of. The electronic
components must be collected and as electronic scrap properly be disposed of.
5
2. PRODUCT DESCRIPTION
The flow meter of the series EE771, based on the measurement principle of thermal mass flow, is suited for
the measurement of flow of air and gases in pipelines. Measurement of for instance the consumption of compressed air, nitrogen, helium, argon, CO2 or other non-corrosive and non-flammable gases.
The EE771 measures the volume flow at standard conditions according to DIN 1343 (P0 = 1023.25 mbar;
t0 = 273.15 K or 0 °C (32 °F). In addition to the standard volume flow, the measurand mass flow, norm flow
and temperature are available.
The EE771 has an integrated consumption counter. The consumption quantity is indicated in the display and
is not lost after a power failure. Two signal outputs are available. Depending on the application, the outputs
can be configured as analogue (current or voltage), switch output or as pulse output for the measurement of
the consumption.
Signal conditioning with optional display
1
The enclosure with the signal conditioning is mounted either on the
measurement probe (model A or B compact) or is remote with a
plugable sensor cable up to 10 meter (33 feet) (model C with remote
probe).
Sensing probe with measurement electronics
2
The interchangeable sensing probe contains the sensor element and
the measurement electronics, in which the data of the factory
calibration is stored. The sensing probe is easy and quickly inter-
changeableintheeld,independentoftheelectronics for the signal
conditioning.After the exchange, the conguration of the outputs is
unchanged.
1
2
3
Sensor cable (only by model C with remote sensing probe)
3
The sensor cable allows for the remote installation, up to 10 meter
(33 feet), of the sensing probe from the housing with the signal conditioning.
Measurment valve with shut-off function
4
The measurement ball valve assembly allows for the easy and reliable
installation within the pipeline. During installation in the pipeline,
observe the required inlet and outlet paths (see page 10). The
nominal size of the measurement ball valve assembly must match the
nominal size of the pipe.
The measurment valve with shut-off function allows for the instalment
and removal of the sensing probe with only interrupting the process
flow for a short moment. The measurement ball valve assembly is
suitable for pressures up to 16 bar (PN16) and available for pipe diameters DN15 (1/2”) to DN50 (2”).
Screw cap
5
The screw cap, with female thread, is screwed in place if the flow
meter is not installed and the pipeline has to be used.
4
5
6
3. INSTALLATION
3.1. Mounting dimensions
3.1.1. Model Compact (EE771-A and EE771-B)
115 (4.53)
cable gland
M16x1.5
60 (2.36)
56 (2.2)
Measurement ball valve
Only at DN15:
Reduction
173 (6.81)
Dimensions in mm (inch)
3/4“-1/2“
A A B
Measurment ball valve Thread A B
DN15 R
DN20 Rp or NPT 3/4” 72 (2.83) 92 (3.62)
DN25 Rp or NPT 1” 83 (3.27) 124 (4.88)
DN32 Rp1 1/4" 100 (3.94) 124 (4.88)
DN40 Rp or NPT 1 1/2" 110 (4.33) 147 (5.79)
DN50 Rp or NPT 2” 131 (5.16) 147 (5.79)
dimensions in mm (inch)
Female thread: BSP thread acc. EN 10226 (old DIN 2999) or NPT
173 (6.81)
1/2" 100±8 (3.94±0.32) 92 (3.62)
p
183 (7.2)
3.1.2. Model remote sensing probe (EE771-C)
145 (5.71)
Cross-section
bore hole:
60 (2.36)
cable gland
M16x1.5
207
Drilling Plan:
129 (5.08)
40 (1.57)
The bottom part of the housing is mounted with
4 screws (not in the scope of supply)
Max. screw diameter: 4.5 mm (0.17 inch).
e.g. 4.2 x 38 mm DIN 7938H Screws
7
3.2. Determining installation site
•
The installation site should be easy accessible and free of vibrations and shocks
• Observe at least 120 mm (5 inch) clearance above the housing with the signal conditioning, in
order to be able to remove the sensing probe if necessary.
• The ambient temperature should not exceed the value as stated in the specifications (see page 20)
– consider heating by radiation.
• Air purity on the installation site according to ISO 8573-1:2010: at least class 3.4.4
• The fluid should not condense at the installation site. Condensation on the tip of the sensing probe
must be avoided.
• In compressed air systems, the installation must be downstream of the dryer. If there is no dryer, at
least steam trap and suitable filter must be present.
• Observe the direction of the flow by the installation (see page 11).
• Observe the recommended straight pipe lengths up and downstream, in order to warrant the speci-
fied measurement accuracy.
• The flow meter should be installed as far as possible from any flow disturbance. Valves or check-
valves should be installed in a respective distance from the flow meter.
3.2.1. Process pressure
Because of the measuring principle the thermal mass flow meter EE771 is largely independent of the process
pressure and is factory calibrated at a pressure of 7 bar (100 psi).
In order to achieve the highest measurement accuracy, the slight dependence on process pressure can be
compensated for in two ways:
• if the process pressure is stable, by programming the pressure value in the configuration software
(see page 30).
• in case of strong fluctuations of the process pressure (e.g. 3 to 10 bar (40 to 150 psi)) an external
pressure transmitter can be installed and connected to the pressure-compensation input
(see page 31).
In order to install or remove the measurement section the pipeline system should
be depressurized.
8
3.3. Installation position
Make sure that the arrow on the tip of the sensing probe is pointing in the direction of the flow.
Model
Vertical Mounting Compact Remote
+ ++
Horizontal Mounting, sensor upwards
Horizontal Mounting, sensor downwards
Horizontal Mounting, sensor across
++ ++
- -
++ ... recommended installation position
+ ..... not recommended if there is vibration on the pipeline
- ...... not recommended
9
+ ++
3.4. Required length of straight pipe
The flow meter should be installed as far as possible from disturbances of the flow. The causes for disturbance
of the flow are for instance, reducers, elbows, T-pieces, valves, gate valves, etc. The specified measurement
accuracy can be achieved only when the following straight inlet and outlet pipe lengths are installed:
• The wall thickness of the inlet and outlet pipe should be 2,6 mm.
• The stated values are as a minimum. If possible, allow for greater distances.
• Valves or gate valves should be installed downstream of the flow meter.
• With lighter gases the inlet straight pipe should be longer.
nominal pipe size (DN)
owdirection
straight inlet pipe
Type
Extension 15 x DN 5 x DN
Reduction 15 x DN 5 x DN
90° - elbow 20 x DN 5 x DN
straight outlet pipe
(DN = Nominal Pipe Size)
Straight inlet pipe Straight outlet pipe
Two 90° - elbows,
in one level
Two 90° - elbows,
in two levels, T-piece
Valve, gate valve 50 x DN 5 x DN
10
25 x DN 5 x DN
30 x DN 5 x DN
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