E+E Elektronik EE776 Series User manual

Manual
Hardware and Software
EE776 Series
FLOW METER for
COMPRESSED AIR and GASES
BA_EE776_e // V2.2 // technical data are subject to change // 193630

2
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 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.

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1. GENERAL............................................................................................................. 4
1.1.Symbol Clarification ................................................................................................. 4
1.2.Safety Instructions .................................................................................................. 4
1.2.1. Intended Use ................................................................................................... 4
1.2.2. Installation, start up and control .................................................................................. 5
1.3.Environmental aspects.............................................................................................. 5
2. PRODUCT DESCRIPTION ....................................................................................... 6
3. INSTALLATION...................................................................................................... 7
3.1.Mounting dimensions ............................................................................................... 7
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.Installation in the pipe line .......................................................................................... 11
3.6.Setting the pipe diameter ........................................................................................... 13
4. ELECTRICAL CONNECTIONS ................................................................................. 14
4.1.Connection diagram................................................................................................. 14
4.1.1. Relay and pulse output, internal switching ........................................................................ 14
4.1.2. Connection with optional plug for power supply and outputs (order code Q).......................................... 14
4.2.Bus Output (optional) ............................................................................................... 15
4.2.1. M-Bus (Meter-Bus).............................................................................................. 15
4.2.2. Modbus RTU ................................................................................................... 16
4.2.3. Data Transmission .............................................................................................. 16
4.2.4. Addressing ..................................................................................................... 16
5. CONTROL COMPONENTS ...................................................................................... 17
5.1.Jumper for Output................................................................................................... 17
5.2.Digital interface USB ( for configuration)............................................................................ 17
5.3.Display / Indicator with keypad (optional)........................................................................... 17
5.3.1. Indication of the analogue and pulse output ....................................................................... 18
5.3.2. Indication of the switch output.................................................................................... 18
5.3.3. Indication of the MIN / MAX values ............................................................................... 18
5.3.4. Reset of the consumption counter or the MIN / MAX value ......................................................... 19
5.3.5. Maximum consumption counter .................................................................................. 19
6. ERROR MESSAGES .............................................................................................. 19
7. MAINTENANCE ..................................................................................................... 20
7.1.Cleaning of the sensor of the flowmeter ............................................................................ 20
8. ACCESSORIES ..................................................................................................... 20
8.1.Adapter BSP - NPT ................................................................................................. 20
8.2.Welding nipple ...................................................................................................... 20
8.3.Ball valve 1/2” ....................................................................................................... 20
8.4.Ball valve 1/2” for parallel measurement............................................................................ 21
8.5.Tapping sleeve (delivery without ball valve) ........................................................................ 21
8.5.1. Mounting the tapping sleeve ..................................................................................... 21
9. TECHNICAL DATA ................................................................................................. 24
9.1.Factory setting analogue output .................................................................................... 25
9.2.Order code replacement sensor .................................................................................... 25
Table of contents - HARDWARE
Table of contents - SOFTWARE
1. General ................................................................................................................ 26
2. Installation ........................................................................................................... 26
2.1.Configuration of the USB Interface (VirtualCOM)................................................................... 27
3. User Interface ....................................................................................................... 28
4. Menu toolbar ........................................................................................................ 28
4.1.File .................................................................................................................. 28
4.2.Transmitter .......................................................................................................... 29
4.3.Extras ............................................................................................................... 29
5. Input Screen ......................................................................................................... 29
5.1.Output 1, Output 2 .................................................................................................. 29
5.1.1. Output mode ................................................................................................... 29
5.1.2. Measurand ..................................................................................................... 29
5.1.3. Units........................................................................................................... 29
5.1.4. Output mode – analogue ........................................................................................ 29
5.1.5. Output mode – switch (relay) .................................................................................... 30
5.1.6. Output mode – pulse ............................................................................................ 31
5.2.Minimum flow shutdown ............................................................................................ 31
5.3.Display .............................................................................................................. 31
5.4.Adjustment .......................................................................................................... 32
5.4.1. 1-point adjustment .............................................................................................. 32
5.4.2. 2-point adjustment .............................................................................................. 33
5.4.3. Reset to factory settings ......................................................................................... 33
5.5.Measuring values overview ......................................................................................... 34
5.5.1. Reset of the MIN / MAX values .................................................................................. 34
5.5.2. Reset of the consumption counter (totalizer)....................................................................... 34
5.6.Setting up Process Parameters..................................................................................... 34
5.6.1. Change the Process Gas ........................................................................................ 34
5.6.2. Changing the standard conditions ................................................................................ 35
5.6.3. Pressure compensation ......................................................................................... 35
5.6.4. Setting the inner pipe diameter................................................................................... 35
5.7.External pressure transmitter for pressure compensation .......................................................... 35
5.8.Bus configuration.................................................................................................... 35

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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.
1.1. 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.bH. cannot be hold responsible.
This symbol indicates attention.
The note should be observed to achieve an optimal functioning of the equipment.
1.2. Safety Instructions
1.2.1. Intended Use
The flowmeter is intended to be used for the measurement of air, non-corrosive and non-flammable gasses
in pipelines only. Consult the factory first before the measurement of wet or filthy gasses.
The design of the flowmeter allows for the EE776 to be installed in a pressurized system up to PN16 – is
16 bar (230 psi).
Mounting, electrical installation, putting in operation and maintenance should only be done by qualified
personnel.
The use of the flowmeter EE776 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.
The flowmeter 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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1.2.2. Installation, start up and control
The flowmeter 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 inadvert-
ently.
• 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.
1.3. 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.

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2. PRODUCT DESCRIPTION
The flowmeter of the series EE776, based on the measurement principle of thermal mass flow, is suited for
the measurement of flow of air and gasses in pipelines. Measurement of for instance the consumption of
compressed air, nitrogen, helium, CO2 or other non-corrosive and non-flammable gasses.
The EE776 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 EE776 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.
Non-return protection for secure mounting
The patented non-return protection combines three functions in one device:
• Non-return protection
The sensor can only be pushed in one direction during installation. The sensor cannot return at all,
even if it is released.
• Seal
By means of an encapsulated O-ring, no compressed air can escape under pressure during assem-
bly.
• Precise positioning
The precise positioning with respect to immersion depth and orientation is easy to perform, guaran-
teeing accurate measurement results.
Signal conditioning with optional display
The enclosure with the signal conditioning is remote with a plugable sensor cable up to 10 meter (33 feet).
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gura-
tion of the outputs is unchanged.
Mounting grip
With the mounting grip, the sensing probe is inserted and correctly positioned into the pipe line.
Sensor cable
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
5
4
1
23

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3. INSTALLATION
3.1. Mounting dimensions
129
40
cable gland
M16x1.5
Cross-section
bore hole:
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
115 (4.53“)
60 (2.36“)56 (2.2“)
EE776 - Enclosure - signal conditioning
EE776 - Sensor probe
R 1/2“ thread
M12x1 Connector
for probe cable
B
variable insertion depth max. A
45 (1.77“)
38 (1.5“)
20 (0.79“)
15
(0.59“)
12
(0.47“)
120 (4.72“)
180 (7.09“)
Ø 40 (1.57“)
Ø 13 (0.51“)
Ø 14 (0.55“)
Ø 40 (1.57“)
SW 36 (1.42“)
see accessories for NPT adapter
Pipe Ø A [mm] B [mm] A [inch] B [inch]
DN50...DN100 165 285 6.5 11.22
DN125...DN300 315 435 12.4 17.13
DN350...DN700 465 585 18.3 23.03

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3.2. Determining installation site
• The installation site should be easy accessible and free of vibrations and shocks
• Observe enough clearance above the mounting position, in order to be able to install and remove
the sensing probe:
at least 450 mm (17.7”) for probe length 165 mm (6.5”) DN50 (2”) upt o DN100 (4”)
at least 600 mm (23.6”) for probe length 315 mm (12.4”) DN125 (5”) up to DN300 (12”)
at least 750 mm (30.0”) for probe length 465 mm (18.3”) DN350 (14”) up to DN700 (28”)
• The ambient temperature should not exceed the value as stated in the specifications (see page
24) – 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 9).
• Observe the recommended straight pipe lengths up and downstream, in order to warrant the speci-
fied measurement accuracy.
• The flowmeter should be installed as far as possible from any flow disturbance. Valves or check-
valves should be installed in a respective distance from the flowmeter.
3.2.1. Process pressure
Because of the measuring principle the thermal mass flowmeter EE776 is largely independent of the process
pressure and is factory calibrated at a pressure of 9 bar (130.5 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 3435).
• 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 35).

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3.3. Installation position
The flow meter has a specified direction of flow. Make sure that the arrow on the tip of the sensing probe and
the marking on the mounting grip is pointing in the direction of the flow.
Pipeline vertical; Sensor horizontal recommended
YES
Pipeline horizontal; Sensor vertical up or horizontal
YES
Pipeline horizontal, Sensor down
NO
Marking of the flow
direction
Marking of the flow
direction
flow direction
flow direction

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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
3.4. Required length of straight pipe
The flowmeter 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 stated values are as a minimum. If possible, allow for greater distances.
• Valves or gate valves should be installed downstream of the flowmeter.
• With lighter gasses the inlet straight pipe should be longer.
owdirection
straight inlet pipe
nominal pipe size (DN)
straight outlet pipe

11
ED
12
0,5 * ED
Knurled nut
0,5 * ED
ED
X
Immersion depth = x +
ED... External diameter
ED
2
Correct position in the pipe line
3.5. Installation in the pipe line
The patented non-return protection device for reliable installation combines three functions in one unit:
• Non-return protection device
The sensor can only be pushed in one direction during installation. The sensor will not move back at all,
even when it is released.
• Seal
Thanks to an encapsulated O-ring, no compressed air can escape under pressure during assembly.
• Precise positioning
The precise positioning with respect to immersion depth and orientation is easy to perform, guarantee-
ing accurate measurement results.
An example installation is described below using the weld-on nipple in combination with the 1/2“ ball valve.
The same basic principles apply to installation with the tapping sleeve.
• Pull the measurement sensor back into the non-return protection device as far as it will go.
• Screw the non-return protection device into the ball valve using suitable sealants for a fully sealed
connection.
• Screw knurled nut in by approx. one thread turn.
• Open the ball valve and dip the measurement sensor into the pipe line.
• Positioning in the pipe line
To ensure that the accuracy level specified on the data sheet is observed, the sensor head must
be positioned in the centre of the pipe. The scale on the sensor pipe for the immersion depth
relates to the centre of the sensor head.

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• When the measurement sensor is correctly positioned in terms of immersion depth and alignment,
tighten the knurled nut with a screw-wrench (AF 27).
• To prevent inadvertent twisting of the probe in use, tighten the grub screw.
Flow direction
CORRECT INCORRECT
Mark for flow
direction
>5°
Align the mounting grip
parallel to the pipe.
• If the measurement sensor is immersed too far into the
pipe line, it can be retracted by unlocking the non-return pro-
tection device. To do this, slowly press the knurled nut
inwards. As with a pressure point in a car clutch, this permits
the immersion depth to be set to the precise millimetre.
• Align the measurement sensor with the flow direction.
The flowmeter has a set flow direction. Ensure that the direction arrow on the sensor head or the
mark on the mounting handle is pointing in the media flow direction.
The measurement sensor is aligned with precision in the flow direction using the mounting handle.
An angle deviation must not be greater than ±5° from the ideal position.

13
Sensor cable
Sensor cable
V0= v0* di2*π/4*3600
V0...Standardizedvolumetricow[m3/h]
v0...Standardizedow[m/s]
d i...Internaldiameterofpipe[m]
π...3,1415
• Connect the measurement sensor and the evaluation unit to the sensor cable.
3.6. Setting the pipe diameter
The flowmeter is factory-set so that the average corrected flow speed is measured in the pipe. The standardized
volumetric flow is calculated by the flowmeter as follows:
The internal diameter is factory-set to the value acc. table 1. Because the inner diameter of a pipe is not
standardized and varies depending on wall thickness, the actual inner diameter of the pipe must be set with
the Configurator Software! (see page 34)
Nominal
diameter
External
diameter
wall thick-
ness
internal
diameter
DN Inch da (mm/inch) s (mm/inch) di (mm/inch)
50 2" 60.3 / 2.37 2.9 / 0.11 54.5 / 2.15
65 2 1/2" 76.1 / 3.0 2.9 / 0.11 70.3 / 2.77
80 3" 88.9 / 3.5 3.2 / 0.13 82.5 / 3.25
100 4" 114.3 / 4.5 3.6 / 0.14 107.1 / 4.22
125 5" 139.7 / 5.5 4.0 / 0.16 131.7 / 5.19
150 6" 168.3 / 6.63 4.5 / 0.18 159.3 / 6.27
200 8" 219.1 / 8.63 6.3 / 0.25 206.5 / 8.13
250 10" 273.0 / 10.75 6.3 / 0.25 260.4 / 10.25
300 12" 323.9 / 12.75 7.1 / 0.28 309.7 / 12.19
350 14“ 355,6 / 14.00 8 / 0.31 339,6 / 13.37
400 16“ 406,4 / 16.00 8,8 / 0.35 388,8 / 15.31
500 20“ 508 / 20.00 11 / 0.43 486 / 19.13
600 24“ 610 / 24.00 12,5 / 0.49 585 / 23.03
700 28“ 711 / 28.00 14,2 / 0.56 682.6 / 26.87
Table 1: Factory setting for pipe diameter
da
dis

14
4. ELECTRICAL CONNECTIONS
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 flowmeter 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 Q)
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

15
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 flowmeter 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 trans-
mitter:
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

16
Secondary addressing
In addition to primary addressing, the EE77x transmitter 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: http://
www.m-bus.com/files/MBDOC48.PDF.
4.2.2. Modbus RTU
The measured values are stored as a 32Bit 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/EE776).
Modbus Map:
Register Protocol-
Address
Measuring Value SI-Unit US/GB-Unit
Read Registers (Function Code 0x03 / 0x04) / 32Bit float Value
30026 19 Standardized Flow Nm/s SFPM
30028 1B Standardized Volumetric Flow Nm3/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 Nm/s SFPM
30263 106 MAX-Value Standardized Flow Nm/s SFPM
30265 108 MIN-Value Standardized Volumetric Flow Nm3/h SCFPM
30267 10A MAX-Value Standardized Volumetric Flow Nm3/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) / 16Bit 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 flowmeters 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 configurator software
is used.
Dip-Switch for address setting

17
5. CONTROL COMPONENTS
5.1. Jumper for Output
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 flowmeter EE771. 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

18
Depending on the configuration of the outputs either the measured values, the status of the relay or the con-
sumption 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

19
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.
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
5.3.5. 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 flowmeter 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 flowmeter to the manufacturer.

20
7. MAINTENANCE
Regular cleaning of the sensor is necessary is used in applications with wet or filthy gasses. Cleaning of the sensor
is necessary prior to calibration or evaluation.
7.1. Cleaning of the sensor of the flowmeter
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 or isopropyl alcohol. It is recom-
mended 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. ACCESSORIES
8.1. Adapter BSP - NPT
16 (0.63)
14 (0.55)
19 (0.75)
19 (0.75)
20 (0.79)
NPT1/2“
SW24
Rp1/2“
Ø 15 (0.59)
Material: Brass
Order code: HA074004
Dimensions mm (inch)
8.2. Welding nipple
25 (0.98)
11 (0.43)
G1/2 G3/4
Ø 26.7 (1.05)
Ø 18.6 (0.73)
Material: Stainless steel 1.4301
Order code: HA074001
8.3. Ball valve 1/2”
70 (2.76)
82.5 (3,25)
G3/4“
51.5 (2.03)
Ø15
(0.6)
G1/2“
Material: Brass
Order code: HA074002