E+E Elektronik EE772 User manual

User Manual
Hardware and Software
EE772
FLOW SENSOR for
COMPRESSED AIR and GASES
BA_EE772 // v2.2 // Modification rights reserved // 193628

2
E+E Elektronik®Ges.m.b.H. does not 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 installa-
tion. 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.

3
1. GENERAL............................................................................................................. 4
1.1.Safety Instructions .................................................................................................. 4
1.1.1. Intended Use ................................................................................................... 4
1.1.2. Installation, Start-up and Control ................................................................................. 5
1.2.Environmental Aspects.............................................................................................. 5
2. PRODUCT DESCRIPTION ....................................................................................... 6
3. INSTALLATION...................................................................................................... 7
3.1.Mounting Dimensions ............................................................................................... 7
3.2.Determining Installation Site ........................................................................................ 8
3.3.Installation Position ................................................................................................. 8
3.4.Required Length of Straight Pipe ................................................................................... 9
3.5.Assembly of the Measurement Section............................................................................. 10
3.5.1. Assembly without Flow Sensor, but with Screw Cap instead (Blind Cap) ............................................. 10
3.6.Installation of the Flow Sensing Probe.............................................................................. 10
3.6.1. Flow Direction .................................................................................................. 10
3.6.2. Installation of the Sensing Probe into the Gauge Mounting Block ................................................... 11
3.6.3. Installation of the Sensing Probe into the Gauge Mounting Block with Hot Tap Valve ................................. 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 E4) ...................................... 13
4.2.Bus Output (Optional)............................................................................................... 14
4.2.1. M-Bus (Meter-Bus).............................................................................................. 14
4.2.2. Modbus RTU ................................................................................................... 15
4.2.3. Data Transmission .............................................................................................. 15
4.2.4. Addressing ..................................................................................................... 15
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 ................................................................................... 17
5.3.3. Indication of the MIN / MAX Values............................................................................... 17
5.3.4. Reset of the Consumption Counter or the MIN / MAX Value ........................................................ 18
5.3.5. Maximum Consumption Counter ................................................................................. 18
6. ERROR MESSAGES .............................................................................................. 18
7. MAINTENANCE ..................................................................................................... 19
7.1.Removal of the Sensing Probe of the Gauge Mounting Block ..................................................... 19
7.2.Removal of the Sensing Probe of the Gauge Mounting Block with Hot Tap Valve................................. 19
7.3.Cleaning of the Sensing Element ................................................................................... 19
8. REPLACEMENT PARTS / ACCESSORIES ................................................................. 19
8.1.Order Code Replacement Sensor .................................................................................. 19
9. TECHNICAL DATA ................................................................................................. 20
9.1.Factory Setting of Outputs .......................................................................................... 21
Table of contents - HARDWARE
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 ..................................................................................................... 25
5.1.3. Units........................................................................................................... 25
5.1.4. Output Mode – Analogue ........................................................................................ 26
5.1.5. Output Mode – Switch (Relay) ................................................................................... 26
5.1.6. Output Mode – Pulse............................................................................................ 27
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 .............................................................................................. 29
5.4.3. Reset to Factory Settings........................................................................................ 30
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) ..................................................................... 30
5.6.Setting up Process Parameters..................................................................................... 30
5.6.1. Change of the Process Gas...................................................................................... 30
5.6.2. Change of the Standard Conditions .............................................................................. 31
5.6.3. Pressure Compensation ......................................................................................... 31
5.7.External Pressure Sensor for Pressure Compensation............................................................. 31
5.8.Bus Configuration ................................................................................................... 31

4
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.
Please find this document and further product information on our website at
www.epluse.com/EE772.
Explanation of Symbols
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.bH. 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 sensor 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 sensor allows for the EE772 to be installed in a pressurized system up to PN40 – is
40 bar (580 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 gauge mounting block should be closed.
Mounting, electrical installation, putting in operation and maintenance should only be done by qualified
personnel.
The use of the flow sensor EE772 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 sensor 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.

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1.1.2. Installation, Start-up and Control
The flow sensor 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 sensor is disposed of. The electronic
components must be collected and as electronic scrap properly be disposed of.

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2. PRODUCT DESCRIPTION
The flow sensor of the series EE772, 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 com-
pressed air, nitrogen, CO2or other non-corrosive and non-flammable gases.
The EE772 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 EE772 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.
Gauge mounting block
The gauge mounting block allows for the easy and reliable
installation within the pipeline. During installation in the pipeline,
observe the required inlet and outlet paths (see page 9).
The nominal size of the gauge mounting block must match the
nominal size of the pipe. The gauge mounting block is suitable
for pressures up to 40 bar (580 PSI) and available for pipe
diameters DN40 (1 1/2") to DN80 (3").
The gauge mounting block with hot tap valve allows for the
installment and removal of the sensing probe under pressure
without interrupting the process flow.
Signal conditioning with optional display
The enclosure with the signal conditioning is mounted either
on the measurement probe (type T19 or T20 compact) or is
remote with a plugable sensor cable up to 10 meter (33 feet) –
(type T3 with remote probe).
Sensing probe with measurement electronics
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 interchangeable in the eld, independent of the
electronics for the signal conditioning. After the exchange, the
conguration of the outputs is unchanged.
Screw cap
The screw cap, with female thread, is screwed in place if the
flow meter is not installed and the pipeline has to be used.
Sensor cable (only by model C with remote sensing probe)
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.
1
5
3
4
2
1
2
3
5
4a
4a
4

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3. INSTALLATION
3.1. Mounting Dimensions
115 (4.53) 145 (5.71)
129 (5.08)
60 (2.36)
60 (2.36)
56 (2.2)
40 (1.57)
cable gland
M16x1.5
cable gland
M16x1.5
Drilling Plan:
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
EE772-T3
Remote probe
EE772-T19 / EE772-T20
Compact
HA071xxx
Gauge mounting block
HA072xxx
Gauge mounting block with hot tap valve
female thread:
Whitworth-Thread acc. EN 10226 (old DIN 2999) or NPT
female thread
opening for additional
sensors G1/2“
152 (5.98)
200 (7.87)
H
H
162 (6.38)
210 (8.27)
108.5 (4.27) 108.5 (4.27)LL
pipe diameter Thread L H
DN40 (1 1/2") Rp or NPT 1 1/2" 110 (4.33) 108.5 (4.27)
DN50 (2") Rp or NPT 2" 131 (5.16) 108.5 (4.27)
DN65 (2 1/2") Rp or NPT 2 1/2" 131 (5.16) 108.5 (4.27)
DN80 (3") Rp or NPT 3" 131 (5.16) 118.5 (4.67)
dimensions in mm (inch)
dimensions in mm (inch)

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3.2. Determining Installation Site
• The installation site should be easy accessible and free of vibrations and shocks.
• Observe at least 260 mm (10.24 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 10).
• Observe the recommended straight pipe lengths up and downstream, in order to warrant the speci-
fied measurement accuracy.
• The flow sensor 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 sensor.
3.3. Installation Position
Make sure that the arrow on the tip of the sensing probe is pointing in the direction of the flow.
++ ... recommended installation position
+ ..... not recommended if there is vibration on the pipeline
- ...... not recommended
Model
Vertical Mounting Compact Remote
+ ++
Horizontal Mounting, sensor upwards
++ ++
Horizontal Mounting, sensor downwards
- -
Horizontal Mounting, sensor across
+ ++

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3.4. Required Length of Straight Pipe
The flow sensor should be installed as far as possible from disturbances of the flow. The causes for distur-
bance of the flow are for instance, reducers, elbows, T-pieces, valves, gate valves, etc. The specified meas-
urement 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 sensor.
• With lighter gases the inlet straight pipe should be longer.
Type
(DN = Nominal Pipe Size)
Straight inlet pipe Straight outlet pipe
Extension 15 x DN 5 x DN
Reduction 15 x DN 5 x DN
90° - elbow 20 x DN 5 x DN
Two 90° - elbows,
in one level 25 x DN 5 x DN
Two 90° - elbows,
in two levels, T-piece 30 x DN 5 x DN
Valve, gate valve 50 x DN 5 x DN
ow direction
straight inlet pipe
nominal pipe size (DN)
straight outlet pipe

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3.5. Assembly of the Measurement Section
In order to install or remove the gauge mounting block, the pipeline system should
be depressurized.
• All connections to be made with appropriated sealing material on the threads.
• The sealing material should not change the area of the inner cross section of the pipe. It must be
warranted that the connections after installation are free of leaks.
• All fittings must be tested on seal tightness.
• Make sure during the assembly of the measurement section that the arrows on the pipe section
and the gauge mounting blocks are pointing in the same direction as the flow.
• The recess for the alignment pin must be at the side of the outlet.
3.5.1. Assembly without Flow Sensor, but with Screw Cap instead (Blind Cap)
In order to use the measurement section without the flow sensor, the blind screw
cap (in the scope of supply) must be screwed tight onto the opening of the gauge
mounting block. If not needed the screw cap can be screwed and stored on the
side of the gauge mounting block.
recess for
alignment pin
3.6. Installation of the Flow Sensing Probe
3.6.1. Flow Direction
The flow direction is indicated with an arrow on the tip of the probe. Due to the alignment pin is the installation
of the sensing probe in the gauge mounting block only possible in the direction of the flow. After a removal,
the sensing probe will be re-installed in the measurement section in exactly the same position as done at the
factory. Hence, the highest reproducibility is guaranteed.
Use sealing
material!
Flow Direction
Flow Direction

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3.6.2. Installation of the Sensing Probe into the Gauge Mounting Block
Make sure that the pipe line is depressurized!Make sure that the pipe line is depressurized!
• Remove transport protection cap of the head of the sensing probe.
• Mount the sensing probe in the gauge mounting block in such a way that the alignment pin fits in
the recess on the gauge mounting block.
• Screw the retainer nut by hand so far that a certain resistance is noticeable.
• Check the correct installation position of the flow sensor. The alignment pin must fit in the recess
on the gauge mounting block.
• Tighten the red coloured retainer nut by hand. Tightening by hand should be sufficient. However, if
the seal is not leak tight carefully tighten the nut with an appropriate tool a bit further
• The mechanical installation of the flow sensor is therewith completed.

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3.6.3. Installation of the Sensing Probe into the Gauge Mounting Block with Hot Tap Valve
The gauge mounting block with hot tap valve allows for the instalment and removal of the sensing probe under
pressure, without interrupting the process flow.
Operate the gauge mounting block with hot tap valve only with the hand, without tools!
Functionallity:
Position OPEN - MEASURE: The sensor head is immersed into the pipe.
Position CLOSE - SERVICE: The gauge mounting block with hot tap valve pressure tight closed. You can
remove the sensor probe.
• Turn the gauge mounting block with hot tap valve in position CLOSE - SERVICE and mount the
sensing probe in the gauge mounting block with hot tap valve in such a way that the alignment pin
fits in the recess on the sealing cone.
• Screw the retainer nut by hand so far that a certain resistance is noticeable.
• Check the correct installation position of the flow sensor. The alignment pin must fit in the recess
on the sealing cone.
• Tighten the retainer nut by hand. Tightening by hand should be sufficient. However, if the seal is
not leak tight carefully tighten the nut with an appropriate tool a bit further.
• Turn the gauge mounting block with hot tap valve in position OPEN - MEASURE.
• The mechanical installation of the flow sensor is therewith completed.
OPEN-MEASURE CLOSE-SERVICE

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4. ELECTRICAL CONNECTIONS
Important note:
The manufacturer cannot be held responsible for personal injuries or damage to property as a result of
incorrect handling, installation, wiring, power supply and maintenance of the device.
Before electrical connections are made turn off the power supply first. If not observed the electronics can be
damaged as a result.
Only a qualified electrotechnical engineer may install the device.
• Unscrew the four screws and remove the cover of the housing.
• The screw terminals are located in the bottom part of the housing.
• For the electrical connection of the flow sensor a six-wire cable is needed (e.g. 6 x 1 mm2(AWG 17))
4.1. Connection Diagram
• Screw terminal OUT 1-1 for the analogue output is internally connected with GND.
• The housing should be grounded to achieve optimal electromagnetic compliance.
4.1.1. Relay and Pulse Output, Internal Switching
The relay switch and pulse outputs are both potential free.
4.1.2. Connection with Optional Plug for Power Supply and Outputs (Order Code E4)
Vcc
OUT 1-2
OUT 1-1
OUT 2-1
OUT 2-2
GND
18...30V AC/DC
+15V
mA_Input
+
-
Modbus data A (=D+) / M-Bus
Modbus data B (=D-) / M-Bus
≅
4...20mA
V
mA
p
I
measuring probe
signal output 1
analogue- or switching output
signal output 2
switching- or pulse output
supply
optional
pressure sensor
or
or
Connection plug for the
power supply and ana-
logue outputs (rear view of
the terminals)
Pin Assignment
1OUT 2-2
2OUT 1-2
3OUT 1-1
4 GND
5OUT 2-1
6 n.c.
7 Vcc
8 n.c.
OUT x-1
OUT x-2
optional bus output
Modbus RTU or M-Bus

14
4.2. Bus Output (Optional)
4.2.1. M-Bus (Meter-Bus)
The M-Bus (Meter Bus) is a field bus for recording consumption data. Transmission is carried out serially on
a reverse polarity protected two-wire line. The flow sensor as M-Bus slave requires a separate supply voltage.
No specific topology (line or star) is prescribed for the cabling. Normal telephone cable of type J-Y(St)Y
Nx2x0.8mm can be used. A maximum of 250 meters is permitted per segment (primary addressed).
Read-out of the current measurement/consumption data
The following measurement/consumption values are transmitted during a standard query:
• Standard volumetric flow (32 Bit Real)
• Temperature (32 Bit Real)
• Mass flow (32 Bit Real)
• Consumption meter status (32 Bit Real)
• Flow velocity (32 Bit Real)
• Standard volumetric flow (32 Bit Integer)
• Temperature (32 Bit Integer)
• Mass flow (32 Bit Integer)
• Consumption meter status (64 Bit Integer)
• Flow velocity (32 Bit Integer)
The table below shows the package structure of the measurement/consumption data sent by the EE77x
sensor:
Header
68 Start of telegram
4F 4F L-eld (length)
68 Second starting signal
08 C-eld (RSP_UD)
XX A-eld (Adresse)
Start User data
72 CI-eld (variable data structure)
XX XX XX XX Identication number
A5 16 Producer (0x16A5 … EUE)
01 Version
09 Medium (9 … compressed air)
XX Access number (continuous)
00 Status
00 00 Signature
Data record 1: Volumenstrom
05 DIF (32 Bit Real)
3E VIF (Volume owmesse in m³/h)
XX XX XX XX Act. measuring value
Data record 2: Temperature
05 DIF (32 Bit Real)
5B VIF (Temperature in °C)
XX XX XX XX Act. measuring value
Data record 3: Mass ow
05 DIF (32 Bit Real)
53 VIF (Mass ow in kg/h)
XX XX XX XX Act. measuring value
Data record 4: Consumption meter reading
05 DIF (32 Bit Real)
16 VIF (Volume in m³)
XX XX XX XX Act. measuring value
Data record 5: Flow rate
05 DIF (32 Bit Real)
7F VIF (manufacturer specic in m/s)
XX XX XX XX Act. measuring value
Data record 6: Pressure
05 DIF (32 Bit Real)
6B VIF (Pressure in bar)
XX XX XX XX Act. measuring value
Data record 7: Volume ow
04 DIF (32 Bit Integer)
3B VIF (Volume ow in 10-3 m³/h)
XX XX XX XX Act. measuring value
Data record 8: Temperatur
04 DIF (32 Bit Integer)
59 VIF (Temperature in 10-2 °C)
XX XX XX XX Act. measuring value
Datenrecord 9: Mass ow
04 DIF (32 Bit Integer)
51 VIF (Mass ow in 10-2 kg/h)
XX XX XX XX Act. measuring value
Datenrecord 10: Consumption meter reading
07 DIF (64 Bit Integer)
13 VIF (Volume in 10-3 m³)
XX XX XX XX
XX XX XX XX
Akt. consumption data
Datenrecord 11: Flow rate
04 DIF (32 Bit Integer)
7F VIF (manufacturer specic in 10-2 m/s)
XX XX XX XX Act. measuring value
Data record 12: Pressure
04 DIF (32 Bit Real)
68 VIF (Pressure in 10-3 bar)
XX XX XX XX Act. measuring value
End of user data
XX Check sum
16 End of telegram

15
Secondary addressing
In addition to primary addressing, the EE77x sensor provides the option of secondary addressing. The fields
of identification number, manufacturer, version and medium are used together as the secondary address. The
exact sequence of the secondary addressing is described in detail in the M-Bus Standard: https://m-bus.com/
assets/downloads/MBDOC48.PDF
4.2.2. Modbus RTU
The measured values are stored as a 32 bit float value. Depending on the measurement unit selected, the
measurements are saved in SI or US/GB units. The measurement unit can be changed using the configuration
software.
For resetting the MIN/MAX-Values write 0 to the corresponding write register.
For Modbus protocol setting please see Application Note AN0103 (www.epluse.com/EE772).
Modbus Map:
Register Protocol-
Address
Measuring Value SI-Unit US/GB-Unit
Read Registers (Function Code 0x03 / 0x04) / 32 bit float value
30026 19 Standardized Flow m/s SFPM
30028 1B Standardized Volumetric Flow m3/h SCFPM
30030 1D Temperature °C °F
30032 1F Massflow kg/h kg/h
30034 21 Consumption reading m3ft3
30036 23 Pressure bar psi
30261 104 MIN-Value Standardized Flow m/s SFPM
30263 106 MAX-Value Standardized Flow m/s SFPM
30265 108 MIN-Value Standardized Volumetric Flow m3/h SCFPM
30267 10A MAX-Value Standardized Volumetric Flow m3/h SCFPM
30269 10C MIN-Value Temperature °C °F
30271 10E MAX-Value Temperature °C °F
30273 110 MIN-Value Massflow kg/h kg/h
30275 112 MAX-Value Massflow kg/h kg/h
30277 114 MIN-Value Pressure bar psi
30279 116 MAX-Value Pressure bar psi
Write Registers (Function Code 0x06) / 16 bit integer value
60261 104 Reset MIN/MAX-Value Standardized Flow
60262 105 Reset MIN/MAX-Value Standardized Volumetric Flow
60263 106 Reset MIN/MAX-Value Temperature
60264 107 Reset MIN/MAX-Value Massflow
60265 108 Reset MIN/MAX-Value Pressure
4.2.3. Data Transmission
Factory Setting
M-Bus
Factory Setting
Modbus
Adjustable Values
M-Bus Modbus RTU
Baud Rate 2400 9600 600...9600 9600...57600
Data Bits 8 8 8 8
Parity Even Even None, Odd, Even None, Odd, Even
Stop Bits 111 or 2 1 or 2
Slave-Address 1 1 0...254 1...247
4.2.4. Addressing
The flow sensors are factory-set to address 1. The slave address can be set via switches on the PCB.
1 2 3 4 5 6 7 8
1 - ON
0 - OFF
1 2 3 4 5 6 7 8
1 - ON
0 - OFF
1 2 3 4 5 6 7 8
1 - ON
0 - OFF
1 2 3 4 5 6 7 8
1 - ON
0 - OFF
1 2 3 4 5 6 7 8
1 - ON
0 - OFF
1 2 3 4 5 6 7 8
1 - ON
0 - OFF
Factory Setting:
Slave-Address = 1
Slave-Address = 255
The address set using
the configuration
software is used.
Dip-Switch for address setting

16
5. CONTROL COMPONENTS
5.1. Jumper J1 and J2
If the signal output is altered from relay to analogue output or vice versa, Jumper Output 1 has to be relocated.
If the analogue output is altered from a current to a voltage output or vice versa, Jumper Out-1 has to be
relocated.
signal output 1 =
switching output
analogue output = current signal (e.g. 4-20mA)
analogue output = voltage signal (e.g 0-10V)
signal output 1 =
analogue output
Line Termination = ON
150 Ohm parallel to
bus output A and B
Modbus RTU only
Line Termination = OFF
Jumper Out-1
Jumper Line Termination
Jumper Output 1
5.2. Digital Interface USB (For Configuration)
The USB connector is behind the blind screw cap, at the side of the housing.
• remove the blind screw cap with a screwdriver
• plug in the USB connector
Install the configuration software, which is in the scope of supply. The configuration software is
available for downloading as well from our website at www.epluse.com
blind screw cap USB-cable
5.3. Display / Indicator with Keypad (Optional)
An optional two-line display is available for the flow sensor EE772. The display is an integral part of the cover
of the housing and has two soft-keys for the control of the indicator.
T : 27.97 °C
V
0: 1.3 m3/h
> Clear Consumption
Clear Min/Max
Set Diameter
Exit
V
0: 1.5 m3/h
Rel : 1
V
0: 45.0 m3/h
Rel : 1
V
0: 323.8 m3/h
Maximal
line 1
line 2
pushbutton - UP
pushbutton - DOWN

17
Depending on the configuration of the outputs either the measured values, the status of the relay or the consumption
is indicated.
T : 27.97 °C
V
0: 1.3 m3/h
> Clear Consumption
Clear Min/Max
Set Diameter
Exit
V
0: 1.5 m3/h
Rel : 1
V
0: 45.0 m3/h
Rel : 1
V
0: 323.8 m3/h
Maximal
measurand
measuring value
unit
Measurand SI Unit US Unit
v0Standardized Flow m/s SFPM
T Temperature °C °F
V0 Standardized Volumetric
Flow
m3/h; m3/min; l/min SCFM; SLPM
m Massflow kg/h; kg/min; kg/s kg/h; kg/min; kg/s
Q Consumption m3ft3
p Pressure bar psi
5.3.1. Indication of the Analogue and Pulse Output
Line 1 indicates always the configured measurand at output 1. In line 2 the desired measurement value can be
indicated using the UP and DOWN keys.
5.3.2. Indication of the Switch Output
Line 1 indicates the status of the switch output. In line 2 the desired measurement value can be indicated using the
UP and DOWN keys.
The display shows an inverse image if the relay output is active (relay has switched).
T : 27.97 °C
V
0: 1.3 m3/h
> Clear Consumption
Clear Min/Max
Set Diameter
Exit
V
0: 1.5 m3/h
Rel : 1
V
0: 45.0 m3/h
Rel : 1
V
0: 323.8 m3/h
Maximal
T : 27.97 °C
V
0: 1.3 m3/h
> Clear Consumption
Clear Min/Max
Set Diameter
Exit
V
0: 1.5 m3/h
Rel : 1
V
0: 45.0 m3/h
Rel : 1
V
0: 323.8 m3/h
Maximal
Switch output inactive (relay has not switched) Switch output active (relay has switched)
5.3.3. Indication of the MIN / MAX Values
Keep the DOWN key pressed for > 3 sec to indicate the MIN value.
Keep the UP key pressed for > 3 sec to indicate the MAX value.
T : 27.97 °C
V
0: 1.3 m3/h
> Clear Consumption
Clear Min/Max
Set Diameter
Exit
V
0: 1.5 m3/h
Rel : 1
V
0: 45.0 m3/h
Rel : 1
V
0: 323.8 m3/h
Maximal
MIN value press pushbutton DOWN >3s
MAX value press pushbutton UP >3s

18
After that the several different measurement values can be indicated using the UP or DOWN keys.
Keep the DOWN or UP key pressed for > 3 sec to exit the MIN / MAX mode.
T : 27.97 °C
V
0: 1.3 m3/h
> Clear Consumption
Clear Min/Max
Set Diameter
Exit
V
0: 1.5 m3/h
Rel : 1
V
0: 45.0 m3/h
Rel : 1
V
0: 323.8 m3/h
Maximal
5.3.4. Reset of the Consumption Counter or the MIN / MAX Value
Keep both the UP and DOWN key pressed for > 3 sec to enter the menu for resetting the consumption coun-
ter or the MIN / MAX value.
Select the desired menu item by pressing the UP or DOWN key briefly.
T : 27.97 °C
V
0: 1.3 m3/h
> Clear Consumption
Clear Min/Max
Set Diameter
Exit
V
0: 1.5 m3/h
Rel : 1
V
0: 45.0 m3/h
Rel : 1
V
0: 323.8 m3/h
Maximal Press pushbutton UP and DOWN at the same time for >3s
To confirm the selected choice of the menu keep the DOWN or UP key pressed for > 3 sec.
Select menu item “NO” or “EXIT” to cancel without resetting.
> Clear Consumption
Clear Min/Max
Exit
5.3.5. Maximum Consumption Counter
The maximum consumption counter readout on the display is 999,999,999.0 m3or 99,999,999.0 ft3. Then it
shows “LCD maximum”. The internal memory continues counting. The maximum counter reading is 3.4 * 1038
m3. It is possible to read-out the counter reading with the configuration software.
6. ERROR MESSAGES
In case the flow sensor is equipped with the optional display, the following error message can be indicated.
ERROR 01: sensing probe is not detected
Cause: the sensing probe is not connect or is defect
Effect: the display indicates “0” for all measurand. The analogue output defaults to the lowest
configured value.
Action: check the head of the sensing probe for visual damage.
check the sensor cable from the sensing probe to the electronics of the signal conditioning.
ERROR 02: the EEprom is defect
Cause: the EEPROM for the storing of the consumption counter and MIN /MAX value is defect.
Effect: the consumption counter and MIN / MAX values are no longer available. All measure-
ment values though are still indicated. The analogue, relay and pulse output are still
functional.
Action: return the flow sensor to the manufacturer.

19
7. MAINTENANCE
7.1. Removal of the Sensing Probe of the Gauge Mounting Block
Gauge mounting block without hot tap valve
Make sure that the pipe line is depressurized!
• Loose the retainer nut and pull the sensor probe from the gauge mounting block.
• Operation without the flow sensor installed page 10.
7.2. Removal of the Sensing Probe of the Gauge Mounting Block with Hot Tap Valve
The sensor can be removed under pressure without flow interruption.
• Turn the gauge mounting block with hot tap valve with the hand without tools (anti-clockwise rotation) in
the position SERVICE - CLOSE.
• Only if the gauge mounting block with hot tap valve is fully in the position SERVICE - CLOSE the sensor
is hermetically sealed against the pressurized line.
• Loose the retainer nut slowly. Let the air exhaust slowly and make sure that is was only the relief pres-
sure and the gauge mounting block with hot tap valve is hermetically sealed.
• Loose the retainer nut and pull the sensor probe from the gauge mounting block with hot tap valve.
• Operation without the flow sensor installed page 10.
The sensor head is sensitive. Use the protection cap for transport and storage!
7.3. Cleaning of the Sensing Element
Do not use an abrasive cleaning agent, an organic solvent containing halogen or acetone.
• Clean the head of the sensor probe by carefully swirling in warm water of isopropyl alcohol. It is
recommended to use isopropyl alcohol if the pollution is crease or oil.
The sensor should not be touch by fingers or solid objects like screwdrivers or brushes!
• Leave the sensor to dry in ambient air.
8. REPLACEMENT PARTS / ACCESSORIES
8.1. Order Code Replacement Sensor
Replacement Sensor PE772-
Type
Compact ri-le flow direction right to left T19
Compact le-ri flow direction left to right T20
Remote probe T3
Measuring range High - 0...200 m/s (656.2 ft/s) HV33 HV33
Measurement valve for
pipe diameter
DN40 N40 N40
DN50 N50 N50
DN65 N65 N65
DN80 N80 N80
Mounting Gauge mounting block TG2 TG2
Gauge mounting block with hot tap valve TG3 TG3
Electrical connection Cable gland and screw terminals no code
1 plug for power supply and outputs E4

20
PE772-T19HV33N65TG2E4
Model: Compact ri-le
Working range: High
Measurement valve for pipe diameter:DN65
Mounting: Gauge mounting block
Electrical connection: 1 plug for power supply and outputs
PE772-T3HV33N65TG2
Model: Remote probe
Working range: High
Measurement valve for pipe diameter: DN65
Mounting: Gauge mounting block
Electrical connection: Cable gland and screw terminals
Order Example Order Example
9. TECHNICAL DATA
Measurands
Flow Volumetric flow at standard conditions acc. to DIN 1343
p0= 1013.25 mbar (14.7 psi); T0= 0 °C (32 °F)
Measuring range HV33 (high)
Standardized volumetric flow in air DN40 (1 1/2"): 2.26...904 m3/h 1.33...531.8 SCFM
DN50 (2"): 3.50...1400 m3/h 2.06...823.6 SCFM
DN65 (2 1/2"): 5.97...1400 m3/h 3.51...823.6 SCFM
DN80 (3"): 9.04...1400 m3/h 5.32...823.6 SCFM
Standardized flow in ≤DN50 (2"): 0.5...200 m/s 100...39370 SFPM
air, CO2, nitrogen, argon DN65 (2 1/2"): 0.5...117 m/s 100...23031 SFPM
DN80 (3"): 0.5...77 m/s 100...15157 SFPM
Accuracy in air at 7 bar (abs) (101.5 psi) and 23°C (73°F)1) ± (1.5 % of measuring value + 0.5 % of full scale)
Temperature dependency ± (0.1 % of measuring value/°C)
Pressure dependency2) 0.5 % of measuring value / bar
Response time t90 < 1 s
Sample rate 0.1 s
Temperature
Measuring range -20...80 °C (-4...176 °F)
Accuracy at 20°C (68°F) ± 0.7 °C (1.26 °F)
Outputs
Signal range and measurands are freely configurable
Analogue output Voltage 0 - 10 V 0 < IL< 1 mA
Current (3-wire) 0 - 20 mA and 4 - 20 mA RL < 500 Ohm
Switch output Potential-free, max. 44 V DC, 500 mA switching capacity
Pulse output Totalizer, pulse length: 0.02...2 s
Digital interface (optional)
RS485 (EE772 = 1 unit load)
Protocol Modbus RTU
Default settings Baud rate 9 6003), parity even, stop bits 1, slave ID 1
M-Bus
Default settings Baud rate 2 4004), parity even, stop bits 1, slave ID 1
Input
Dynamic pressure compensation 4 - 20 mA (2-wire; 15 V) input for external pressure sensor