Bürkert 8025 Series User manual

Operating Instructions
Bedienungsanleitung
Manuel d‘utilisation
Type 8025
UNIVERSAL
Flow transmitter
Durchfluss-Transmitter
Transmetteur de débit

We reserve the right to make technical changes without notice.
Technische Änderungen vorbehalten.
Sous réserve de modifications techniques.
© Bürkert SAS, 2012 - 2017
Operating Instructions 1710/03_EU-ML 00555851 / Original FR

3
1 ABOUT THE OPERATING INSTRUCTIONS ..........................................................................................................................6
1.1 Symbols used .........................................................................................................................................................................6
1.2 Definition of the word "device" .......................................................................................................................................6
2 INTENDED USE ...................................................................................................................................................................................7
3 BASIC SAFETY INFORMATION ..................................................................................................................................................8
4 GENERAL INFORMATION ................................................................................................................................................................9
4.1 Manufacturer's address and international contacts ............................................................................................9
4.2 Warranty conditions ..............................................................................................................................................................9
4.3 Information on the Internet ...............................................................................................................................................9
5 DESCRIPTION ....................................................................................................................................................................................10
5.1 General description ...........................................................................................................................................................10
5.2 Description of the rating plate ....................................................................................................................................10
6 TECHNICAL DATA ...........................................................................................................................................................................11
6.1 Conditions of use ..............................................................................................................................................................11
6.2 Conformity to standards and directives ................................................................................................................11
6.2.1 UL certification ...................................................................................................................................11
6.3 Mechanical data .................................................................................................................................................................11
6.4 Dimensions ...........................................................................................................................................................................12
6.5 Electrical data ......................................................................................................................................................................12
6.6 Specifications of the connected flow sensor .....................................................................................................13
7 INSTALLATION AND WIRING ....................................................................................................................................................14
7.1 Safety instructions ............................................................................................................................................................14
7.2 Installation of a panel version .....................................................................................................................................15
7.3 Installation of a wall-mounted version ...................................................................................................................16
7.4 Wiring .......................................................................................................................................................................................17
7.4.1 Specifications of the connection cables ......................................................................................18
7.4.2 Equipotentiality of the installation ..................................................................................................18
7.4.3 Terminal assignment and use of the selectors ...........................................................................20
7.4.4 Wiring a panel version .....................................................................................................................22
7.4.5 Wiring a wall-mounted version ......................................................................................................22
English
Type 8025 UNIVERSAL

4
7.4.6 Wiring the AO1 current output of a panel version or a wall-mounted version,
12...36 V DC ......................................................................................................................................23
7.4.7 Wiring the digital output DO1 (transistor) of a panel version or a wall-mounted
version, 12...36 V DC .......................................................................................................................24
7.4.8 Wiring the AO1 current output of a wall-mounted version, 115/230 V AC .......................25
7.4.9 Wiring the digital output DO1 (transistor) of a wall-mounted version, 115/230 V AC ....27
7.4.10 Wiring the digital outputs DO2 and DO3 (relays) of a panel or a wall-mounted version 28
7.4.11 Connecting the flow sensor to the transmitter ...........................................................................29
8 OPERATING AND COMMISSIONING ....................................................................................................................................32
8.1 Safety instructions .............................................................................................................................................................32
8.2 Operating levels of the device ....................................................................................................................................32
8.3 Description of the navigation keys and the status LEDs .............................................................................35
8.4 Using the navigation keys ............................................................................................................................................36
8.5 Details of the Process level .........................................................................................................................................37
8.6 Details of the Parameters menu ...............................................................................................................................37
8.6.1 Choosing the display language .....................................................................................................38
8.6.2 Choosing the flow rate units, the number of decimals and the units of the totalizers ......39
8.6.3 Entering the K factor of the fitting used .......................................................................................41
8.6.4 Determining the fitting K factor using a Teach-In procedure ...................................................41
8.6.5 Configuring the outputs (general diagram) .................................................................................44
8.6.6 Associating a flow rate range to the current output AO1 ........................................................44
8.6.7 Activating / Deactivating the emission of a 22 mA current on the current output .............45
8.6.8 Configuring the transistor output DO1 as a pulse output proportional to a volume .........46
8.6.9 Configuring the transistor output DO1 to transmit the rotational frequency of
the paddle wheel ...............................................................................................................................46
8.6.10 Configuring the transistor output DO1 to switch a load depending on two
threshold values .................................................................................................................................47
8.6.11 Configuring the transistor output DO1 to switch a load when a warning mes-
sage is generated by the device ....................................................................................................49
8.6.12 Configuring the relay outputs DO2 and DO3 to switch a load depending on
two thresholds ...................................................................................................................................50
8.6.13 Configuring the relay outputs DO2 and DO3 to switch a load when a warning
message is generated by the device ............................................................................................51
8.6.14 Configuring the filter of the measured flow rate .........................................................................51
8.6.15 Resetting both totalizers ...................................................................................................................53
8.6.16 Parameterizing the cut-off flow rate ..............................................................................................53
8.6.17 Setting the brightness of the display and how long it stays ON, or deactivating
the backlight .......................................................................................................................................54
English
Type 8025 UNIVERSAL

5
8.7 Details of the Test menu ...............................................................................................................................................55
8.7.1 Adjusting the current output ...........................................................................................................56
8.7.2 Reading the rotational frequency of the paddle wheel .............................................................57
8.7.3 Checking the outputs behaviour ....................................................................................................57
8.7.4 Monitoring the flow rate in the pipe ..............................................................................................57
8.7.5 Monitoring the value of the daily totalizer ......................................................................................59
8.8 Details of the Information menu .................................................................................................................................59
9 MAINTENANCE AND TROUBLESHOOTING .....................................................................................................................60
9.1 Safety instructions ............................................................................................................................................................60
9.2 Cleaning the device ..........................................................................................................................................................60
9.3 If you encounter problems ...........................................................................................................................................60
9.3.1 Resolution of problems when the device status LED is OFF .................................................60
9.3.2 Resolution of problems without message generation and device status LED is red ........61
9.3.3 Resolution of problems without message generation and device status LED is orange . 62
9.3.4 Resolution of problems without message generation but device status LED is ON ........63
9.3.5 Resolution of problems without message generation and device status LED is green ...64
9.3.6 Resolution of problems linked to warning messages not registered in the Infor-
mation menu .......................................................................................................................................65
10 SPARE PARTS AND ACCESSORIES ....................................................................................................................................66
11 PACKAGING, TRANSPORT ........................................................................................................................................................66
12 STORAGE ............................................................................................................................................................................................66
13 DISPOSAL OF THE DEVICE ......................................................................................................................................................67
English
Type 8025 UNIVERSAL

6
About the Operating Instructions
1 ABOUT THE OPERATING INSTRUCTIONS
The Operating Instructions describe the entire life cycle of the device. Please keep the Operating Instructions in a
safe place, accessible to all users and any new owners.
The Operating Instructions contain important safety information.
Failure to comply with these instructions can lead to hazardous situations. Pay attention in particular to the
chapters "3 Basic safety information" and "2 Intended use".
▶Whatever the version of the device, the Operating Instructions must be read and understood.
1.1 Symbols used
DANGER
Warns against an imminent danger.
▶Failure to observe this warning results in death or in serious injury.
WARNING
Warns against a potentially dangerous situation.
▶Failure to observe this warning can result in serious injury or even death.
CAUTION
Warns against a possible risk.
▶Failure to observe this warning can result in substantial or minor injuries.
NOTICE
Warns against material damage.
Indicates additional information, advice or important recommendations.
Refers to information contained in these Operating Instructions or in other documents.
▶Indicates an instruction to be carried out to avoid a danger, a warning or a possible risk.
→Indicates a procedure to be carried out.
1.2 Definition of the word "device"
The word "device" used within these Operating Instructions refers to the transmitter type 8025 Universal with
serial numbers higher or equal to 20 000.
English
Type 8025 UNIVERSAL

7
Intended use
2 INTENDED USE
Use of the device that does not comply with the instructions could present risks to people, nearby
installations and the environment.
The transmitter 8025 Universal has been designed to process a frequency signal, received from a flow sensor
connected to the transmitter.
▶Use the device in compliance with the characteristics and commissioning and use conditions specified in the
contractual documents and in the Operating Instructions.
▶Never use the transmitter 8025 Universal for security applications.
▶Use the device only in combination with foreign devices or foreign components recommended or approved by
Bürkert.
▶Protect the device against electromagnetic interference, ultraviolet rays and, when installed outdoors, the
effects of climatic conditions.
▶Only operate a device in perfect working order.
▶Store, transport, install and operate the device properly.
▶Only use the device as intended.
English
Type 8025 UNIVERSAL

8
Basic safety information
3 BASIC SAFETY INFORMATION
This safety information does not take into account any contingencies or occurrences that may arise during instal-
lation, use and maintenance of the device.
The operating company is responsible for the respect of the local safety regulations including for the staff safety.
Danger due to electrical voltage.
▶If a 12...36 V DC energized version is installed either in a wet environment or outdoors, all the electrical volt-
ages must be of max. 35 V DC.
▶Before carrying out work on the system, disconnect the electrical power for all the conductors and isolate it.
▶All equipment connected to the device must be double insulated with respect to the mains according to the
standard IEC 61010-1:2010.
▶Observe all applicable accident protection and safety regulations for electrical equipment.
Various dangerous situations
To avoid injury:
▶Do not use the device in explosive atmospheres.
▶Do not use the device in an environment incompatible with the materials it is made of.
▶Do not subject the device to mechanical stress.
▶Do not make any modifications to the device.
▶Prevent any unintentional power supply switch-on.
▶Only qualified and skilled staff can carry out the installation and maintenance work.
▶Guarantee a defined or controlled restarting of the process, after a power supply interruption.
▶Observe the general technical rules.
NOTICE
Elements / Components sensitive to electrostatic discharges
The device contains electronic components sensitive to electrostatic discharges. They may be damaged if they
are touched by an electrostatically charged person or object. In the worst case scenario, these components are
instantly destroyed or go out of order as soon as they are activated.
▶To minimise or even avoid all damage due to an electrostatic discharge, take all the precautions described in
standard EN 61340-5-1.
▶Also ensure that you do not touch any of the live electrical components.
English
Type 8025 UNIVERSAL

9
General information
4 GENERAL INFORMATION
4.1 Manufacturer's address and international contacts
To contact the manufacturer of the device, use following address:
Bürkert SAS
Rue du Giessen
BP 21
F-67220 TRIEMBACH-AU-VAL
You may also contact your local Bürkert sales office.
The addresses of our international sales offices are available on the internet at: www.burkert.com
4.2 Warranty conditions
The condition governing the legal warranty is the conforming use of the device in observance of the operating
conditions specified in these Operating Instructions.
4.3 Information on the Internet
You can find the Operating Instructions and technical data sheets regarding the type 8025 at: www.burkert.com
English
Type 8025 UNIVERSAL

10
Description
5 DESCRIPTION
5.1 General description
The 8025 Universal is a flow transmitter with display, available in wall-mounted and panel versions:
• The panel version is made up of an electronics integrated in an open housing with display.
• The wall-mounted version is made up of an electronics integrated in a housing with cover, display and 3 cable
glands.
The device is equipped with a 4...20 mA current output (analogue output, called AO1), a transistor output (con-
figured as a pulse output by default, called DO1) and two totalizers.
Some versions are also fitted with two relay outputs (called DO2 and DO3).
The device operates on a 3 wire system and needs a 12...36 V DC or a 115/230 V AC power supply.
The electrical connection is carried out on the terminal blocks of the electronic board.
5.2 Description of the rating plate
LFLOW 8025 PANEL SUPPLY: 12-36V= 210 mA
DO1: 5-36V= 100mA AO1:4-20mA
DO2&3: 2xRelay 30 and 42V peak or 60V... max. IP20
S/N 20 000
00564417 W46MA
Made in France
1
10
6
781112
35
9
4
2
1. Measured value
2. Type of the device, housing
3. Specifications of the digital output DO1
(transistor)
4. Specifications of the analogue output AO1
5. Supply voltage and max. current
consumption
6. Protection class of the device
7. Manufacturing code
8. Conformity markings
9. Warning: Before using the device, take into account the technical specifications described in these Oper-
ating Instructions.
10. Specifications of the relay outputs DO2 and DO3
11. Serial number
12. Order code
Figure 1: Rating plate of the device (example)
English
Type 8025 UNIVERSAL

11
Technical data
6 TECHNICAL DATA
6.1 Conditions of use
Ambiant temperature –10...+60 °C
Air humidity < 80 %, non condensated
Max. height above sea level 2000 m
Installation category Category I according to UL61010-1
Degree of pollution Degree 2 according to EN 61010 -1
Protection rating according to EN 60529
• wall-mounted version • IP65, device wired, cable glands tightened, cover lid screwed tight and
entry item nuts of the cable glands tightened at a screwing torque of
1.5 Nm
• panel version • front side IP65, rear side IP20
6.2 Conformity to standards and directives
The applied standards, which verify conformity with the EU directives, can be found on the EU-type examination
certificate and/or the EU declaration of conformity (if applicable).
6.2.1 UL certification
Devices with variable key PU01 or PU02 are UL-certified devices and comply also with the following standards:
• UL 61010-1
• CAN/CSA-C22.2 n°61010-1
Identification on the device Certification Variable key
UL-recognized PU01
Measuring
Equipment
EXXXXXX
®
UL-listed PU02
6.3 Mechanical data
Part Material
Housing with cover, wall-mounted version ABS
Cable glands, wall-mounted version PA
Open housing, panel version PC
Foil polyester
4 screws Stainless steel
Cable clips PA
English
Type 8025 UNIVERSAL

12
Technical data
6.4 Dimensions
→Please refer to the technical data sheets related to the device at: www.burkert.com
6.5 Electrical data
Power supply 12...36 V DC • filtered and regulated
• SELV circuit, with a safe energy level
• max. tolerance 12 V DC: –5 % or +10 %
• max. tolerance 36 V DC: ±10 %
Power source (not provided) • Source with limited power in accordance with § 9.4
of the EN 61010-1 standard
• or class 2 source in accordance with the
UL 1310/1585 and EN 60950-1 standards
Power supply 115/230 V AC
• frequency
• supplied voltage
• current
• integrated protection
• power
• 50/60 Hz
• 27 V DC, regulated
• max. 250 mA
• 250 mA time delay fuse
• 6 VA
Current consumption (without the consumption of
the 4...20 mA output)
• version without relays, energized with 12...36 V DC
• version with relays, energized with 12...36 V DC
• version without relays, energized with 115/230 V AC
• version with relays, energized with 115/230 V AC
• 70 mA (at 12 V DC) and 35 mA (at 36 V DC)
• 100 mA (at 12 V DC) and 50 mA (at 36 V DC)
• 35 mA
• 50 mA
Digital output DO1 (transistor)
• type
• function
• frequency (f)
• Electrical data
• duty cycle if 0,6 < f < 300 Hz
• duty cycle if 300 < f < 1500 Hz
• duty cycle if 1500 < f < 2200 Hz
• protection
polarized, potential-free
• NPN / PNP (wiring dependent), open collector
• pulse output (by default), user configurable
• 0,6...2200 Hz
• 5...36 V DC, 100 mA max., voltage drop 2,7 V DC at
100 mA
• > 0.45
• > 0.4
• < 0.4
• galvanically isolated, and protected against over-
voltages, polarity reversals and short-circuits
English
Type 8025 UNIVERSAL

13
Technical data
Digital outputs DO2 and DO3 (relays)
• operating
• electrical data of the load (non UL devices)
• electrical data of the load (UL devices)
• max. breaking capacity
• life span
• hysteresis (by default), user configurable, normally open
• 230 V AC / 3 A or 40 V DC / 3 A
• max. 30 V AC and 42 Vpeak or max. 60 V DC, 3 A
• 750 VA (resistive load)
• min. 100000 cycles
Current output AO1
• specification
• max. loop impedance
• 4...20 mA, sink or source (wiring dependent), 22 mA
to indicate a fault (can be activated)
• 1300W at 36 V DC, 1000W at 30 V DC, 750W at
24 V DC, 300W at 15 V DC, 200W at 12 V DC
• 900W if the device is energized with 115/230 V AC
DANGER
Danger due to the operation of the relay outputs of a UL device in a wet location.
▶If a UL device is used in a wet location:
- energize the relay outputs with an alternating voltage of max. 16 Vrms and 22,6 Vpeak.
- or energize the relay outputs with a direct voltage of max. 35 V DC.
6.6 Specifications of the connected flow sensor
Signal originating from the remote sensor
• type
• frequency
• max. voltage
• pulse, sine-wave (typical sensitivity 50 mV peak-to-peak at
250 Hz), "on/off", or standard voltage 0...5 V DC
• 0,6 Hz to 2,2 kHz, can be adjusted
• 36 V DC
Input impedance depends on the position of selector "LOAD" on the electronic
board of the 8025. See chap. 7.4.11
Power supply supplied by the transmitter depending on the position of
selector "SENSOR SUPPLY" of the 8025, either:
• 5 V DC, 30 mA max.
• (L+)-12V: supply voltage (L+) of the transmitter minus
12 V DC (minus 12,5 V DC max.), 80 mA max.
• L+: supply voltage (L+) of the transmitter (minus 1,5 V DC
max.), 140 mA max. (if the device is energized with
12...36 V DC), 80 mA max. (if the device is energized with
115/230 V AC)
English
Type 8025 UNIVERSAL

14
Installation and wiring
7 INSTALLATION AND WIRING
7.1 Safety instructions
DANGER
Risk of injury due to electrical voltage.
▶If a 12...36 V DC energized version is installed either in a wet environment or outdoors, all the electrical volt-
ages must be of max. 35 V DC.
▶Disconnect the electrical power for all the conductors and isolate it before carrying out work on the system.
▶All equipment connected to the wall-mounted or panel version of the flow transmitter 8025 Universal must be
double insulated in relation to the mains in accordance with IEC standard 61010-1:2010.
▶Observe all applicable accident protection and safety regulations for electrical equipment.
WARNING
Risk of injury due to non-conforming installation.
▶The electrical installation can only be carried out by qualified and skilled staff with the appropriate tools.
▶Fit a circuit breaker or a switch to the electrical installation in which the device is installed.
▶Install the circuit breaker or switch in a place which is easy to reach.
▶Identify the circuit breaker or switch as the electrical power cut-off system for the device.
▶Install appropriate overload safety devices. For a version energized by 115/230 V AC, insert overcurrent pro-
tective devices in the live conductor and in the neutral conductor.
▶Do not energize a device, version 12...36 V DC, with an alternating voltage or with a direct voltage higher
than 36 V DC.
▶Observe the standard NF C 15-100 / IEC 60364.
WARNING
Risk of injury due to unintentional switch on of power supply or uncontrolled restarting of the
installation.
▶Take appropriate measures to avoid unintentional activation of the installation.
▶Guarantee a set or controlled restarting of the process subsequent to any intervention on the device.
NOTICE
Risk of damage to the device if the incorrect supply voltage is applied.
▶Energize the device with a supply voltage in accordance with the position of the selector. See Figure 11,
chap. 7.4.5.
Protect this device against electromagnetic interference, ultraviolet rays and, when installed outdoors, the
effects of the climatic conditions.
English
Type 8025 UNIVERSAL

15
Installation and wiring
7.2 Installation of a panel version
Install the panel version of the device in a cabinet with a protection class at least IP54 to ensure a degree
of pollution 2 inside the cabinet.
→To cut the opening in the cabinet door, use the supplied drilling jig, respecting the dimensions indicated in Figure 2.
95
80
76
50
95
80
76 50
Drilling jig
Figure 2: Dimensions of the drilling jig [mm]
→Insert the 4 screws in the housing (from the front).
→Insert the seal on the external threads of the 4 screws (rear of the housing).
→Put the assembly on the cutout, electronics turned to the inside of the cabinet.
→Put the 4 washers on the 4 screws.
→Put a nut on each of the 4 screws and tighten the nuts to secure the device to the cabinet.
Seal
Nut
Washer
Screws
Cable clip
Figure 3: Installation of a 8025, panel version
English
Type 8025 UNIVERSAL

16
Installation and wiring
7.3 Installation of a wall-mounted version
NOTICE
Risk of material damage if the cable glands are not tightly screwed on the housing
▶Before installing the wall-mounted housing on its support, tighten the nuts of the entry item of the cables
glands at a torque of 1.5 Nm.
The flow transmitter in a wall-mounted version has 4 holes in the bottom of the housing.
→Remove the covering strips covering the screws.
Covering strips
ENTER
0....9
FLOW
Nut of the entry item
Figure 4: Location of the fastening nuts and the covering strips
→Loosen the 4 screws and open the cover to get access to the holes [1].
1 1
11
106 mm
230V
LN
230V
T 250 mA
56789 10
LN
230V
CURRENT
SOURCE SINK
BINARY
PE PEPE
PE
DI1
DI2
DI3
DI4
DO4
ISOG
FLOW
SENSOR
L+ L- PE P- P+
NC
Iout
PULSE
DO1
Supply
12..36Vdc
Univ
Batch
(AO1)
SUPPLY
NC
COIL
PULSE
INPUT
NPN/PNP
213PE
+-
SENSOR
SUPPLY
LOAD
+5V
L+ (L+)-12V
COIL/PNP
39K
470
2.2K
SENSOR TYPE
COIL NPN/PNP
DO2
DO3
OFFON
106 mm
Figure 5: Installation of a wall-mounted version
→Secure the housing to the support respecting the dimensions indicated in Figure 5.
→Wire acc. to instructions in chap. 7.4.
→Close the housing and tighten the 4 screws of the cover.
English
Type 8025 UNIVERSAL

17
Installation and wiring
7.4 Wiring
DANGER
Risk of injury due to electrical voltage.
▶If a 12...36 V DC energized version is installed either in a wet environment or outdoors, all the electrical volt-
ages must be of max. 35 V DC.
▶Disconnect the electrical power for all the conductors and isolate it before carrying out work on the system.
▶All equipment connected to the device must be double insulated in relation to the mains in accordance with
IEC standard 61010-1:2010.
▶Observe all applicable accident protection and safety regulations for electrical equipment.
DANGER
Danger due to the operation of the relay outputs of a UL device in a wet location.
▶If a UL device is used in a wet location:
- energize the relay outputs with an alternating voltage of max. 16 Vrms and 22,6 Vpeak.
- or energize the relay outputs with a direct voltage of max. 35 V DC.
NOTICE
Risk of damage to the device if the incorrect supply voltage is applied.
▶Energize the device with a supply voltage in accordance with the position of the selector. See Figure 11,
chap. 7.4.5.
The device can be damaged if it is not tight.
• Insert the supplied stopper gaskets into the unused cable glands to ensure the tightness of the device.
Only move the selectors when the power supply is off.
Protect this device against electromagnetic interference, ultraviolet rays and, when installed outdoors, the
effects of the climatic conditions.
For a correct operation of the device, respect the following recommendations during the electrical
installation:
• Make sure the installation is equipotential. See chap. 7.4.2.
• Do not install the cables near high voltage or high frequency cables; if a combined installation cannot be
avoided, a minimum clearance of 30 cm should be respected.
For a device fed at 12...36 V DC, respect the following recommendations for the electrical installation:
• Use a filtered and regulated 12...36 V DC power supply. The circuit has to be safety extra low voltage
(SELV), with a safe energy level.
The power supply of the device can be damaged if it is not protected.
• Protect the device power supply by means of a 300 mA fuse and a switch.
English
Type 8025 UNIVERSAL

18
Installation and wiring
The power supply of a transistor output can be damaged if it is not protected.
• Protect the power supply of each transistor output by means of a 125 mA fuse.
The relays can be damaged if not protected.
• Protect the relays by means of a max. 3 A fuse and a circuit breaker (depending on the process).
• Do not apply both a dangerous voltage and a safety extra-low voltage to the relays.
7.4.1 Specifications of the connection cables
Table 1: Specifications of the cables and wires for the direct wiring to the terminal blocks of a panel-mounted version
Specification of the cables and the conductors (not supplied) Recommended value
Shielded cable yes
Length of the cable max. 50 m
Operating temperature, UL device min. 90 °C
Operating temperature, non UL device min. 80 °C
Cross section of the conductors 0,2...1,5 mm2
Table 2: Specifications of the cables and wires for the wiring through the M16x1,5 cable glands
Specification of the cables and the conductors (not supplied) Recommended value
Shielded cable yes
Length of the cable max. 50 m
External diameter of the cable, if 1 cable per cable gland 4...8 mm
Operating temperature, UL device min. 90 °C
Operating temperature, non UL device min. 80 °C
Cross section of the conductors 0,2...1,5 mm2
7.4.2 Equipotentiality of the installation
To ensure the equipotentiality of the installation (power supply - device - fluid):
→Connect together the various earth spots in the installation to eliminate the potential differences that may
occur between different earthes.
→Observe faultless earthing of the shield of the power supply cable, at both ends.
→Connect the negative power supply terminal to the earth to suppress the effects of common mode currents. If
this connection cannot be made directly, a 100 nF / 50 V capacitor can be fitted between the negative power
supply terminal and the earth.
→Special attention has to be paid if the device is installed on plastic pipes because there is no direct earthing
possible. Proper earthing is performed by earthing together the metallic instruments such as pumps or valves,
that are as close as possible to the device. If no such instrument is near the device, insert metallic earthing
rings inside the plastic pipes upstream and downstream the device and connect these parts to the same
earth. The earth rings must be in contact with the fluid.
English
Type 8025 UNIVERSAL

19
Installation and wiring
+
-
(*)
Flow sensor
8025 Universal
Power supply
Plastic pipe
Valve, pump,... (or earth rings, not
provided, inserted into the pipe)
Power cable shield
*) If a direct earth connection is not possible, fit a 100 nF / 50 V capacitor between the negative power supply terminal and
the earth.
Figure 6: Equipotentiality skeleton diagram with pipes in plastic
+
-
(*)
Flow sensor
8025 Universal
Power supply
Metal pipe
*) If a direct earth connection is not possible, fit a 100 nF / 50 V capacitor between the negative power supply terminal and
the earth.
Figure 7: Equipotentiality skeleton diagram with pipes in metal
English
Type 8025 UNIVERSAL

20
Installation and wiring
7.4.3 Terminal assignment and use of the selectors
2
B
1
5
A
C
D
CURRENT
SOURCESINK
BINARY
PE PEPE
PE
DI1
DI2
DI3
DI4
DO4
ISOG
FLOW
SENSOR
L+ L- PE P- P+
NC
Iout
PULSE
DO1
Supply
12..36Vdc
Univ
Batch
(AO1)
SUPPLY
NC
COIL
PULSE
INPUT
NPN/PNP
213PE
+-
SENSOR
SUPPLY
LOAD
+5V
L+ (L+)-12V
COIL/PNP
39K
470
2.2K
SENSOR TYPE
COIL NPN/PNP
DO2
DO3
OFF ON
3
4
Terminal block 1
• Iout: 4...20 mA output (AO1)
• L+: V+ (positive voltage)
• L-: 0V (power supply ground)
• PE: protective earth, factory wired
• P-: Negative transistor output DO1
• P+: Positive transistor output DO1
Terminal block 2
PE: Shieldings of both the power supply cable
and the AO1 and DO1 output cables
Terminal block 3: Wiring of the relay output DO2
(if the device has relays).
Terminal block 4: Wiring of the relay output DO3
(if the device has relays).
Terminal block 5 "FLOW SENSOR": Wiring the
remote flow sensor. The wiring depends on the
type of output signal originating from the flow
sensor: see chap. 7.4.11.
Switch A: see Figure 14, page 24
Switch B: see chap. 7.4.11
Switch C: see Table 3, page 30
Switch D: see chap. 7.4.11
Figure 8: Terminal assignment of a panel version or a wall-mounted version, 12...36 V DC
English
Type 8025 UNIVERSAL