Page 1
Type 8041
Insertion electromagnetic flowmeter
Magnetisch-induktives Durchfluss-Messgerät, Insertion
Débitmètre électromagnétique à insertion
Operating Instructions
Bedienungsanleitung
Manuel utilisateur
Page 2
We reserve the right to make technical changes without notice.
Technische Änderungen vorbehalten.
Sous réserve de modifications techniques.
© Bürkert SAS, 2011 - 2013
Operating Instructions 1308/1_EU-ML_559777_Original_FR
Page 3
Type 8041
1. ABOUT THIS MANUAL .................................................................................3
1.1. Symbols used .......................................................................................3
1.2. Definition of the word "device" ....................................................3
2. INTENDED USE ................................................................................................4
3. BASIC SAFETY INFORMATION ...............................................................4
4. GENERAL INFORMATION ...........................................................................6
4.1. Manufacturer's address and international contacts .........6
4.2. Warranty conditions ...........................................................................6
4.3. Information on the Internet ............................................................6
5. DESCRIPTION ...................................................................................................6
5.1. Area of application .............................................................................6
5.2. General description ........................................................................... 6
5.2.1. Construction ........................................................................... 6
5.2.2. Operating principle ............................................................... 6
5.3. Description of the name plate .....................................................7
5.4. Available versions ...............................................................................7
6. TECHNICAL DATA ...........................................................................................8
6.1. Conditions of use ................................................................................8
6.2. Conformity to standards and directives..................................8
6.3. Mechanical data ...................................................................................8
6.4. General data ....................................................................................... 11
6.5. Electrical data ....................................................................................12
6.6. Electrical connections ................................................................... 13
6.7. K factors ................................................................................................13
7. QUICK INSTALLATION ..............................................................................14
8. INSTALLATION ............................................................................................... 16
8.1. Safety instructions...........................................................................16
8.2. Installation onto the pipe ............................................................. 17
8.2.1. Recommandations for installing the 8041 on
the pipe ..................................................................................17
8.2.2. Installation into the pipe of a 8041 with a G2'' nut .....20
8.2.3. Installation into the pipe of a 8041 with a clamp
connection ............................................................................21
8.3. Wiring ...................................................................................................... 21
8.3.1. Wiring the 4-20 mA output...............................................24
8.3.2. Wiring the frequency output .............................................24
8.3.3. Wiring the relay output ......................................................26
9. ADJUSTMENT AND COMMISSIONING ............................................27
9.1. Safety instructions...........................................................................27
9.2. Description of the electronic board ....................................... 28
9.3. General diagram of the Read and
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1
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Type 8041
Parameterizing modes .................................................................. 30
9.4. Selecting the frequency of the main supply .....................32
9.5. Filter selection ................................................................................... 32
9.6. Selecting the measurement range ......................................... 33
9.7. Calibrating the flow zero point .................................................33
9.8. Calibrating the full scale ..............................................................36
9.9. Setting the parameters of the relay output ....................... 39
9.9.1. Choosing the switching way of the relay output ..........40
9.9.2. Viewing and setting the low and high switching
thresholds .............................................................................42
9.9.3. Viewing and setting the time delay before switching .45
10. MAINTENANCE AND TROUBLESHOOTING ................................48
10.1. Safety instructions...........................................................................48
10.2. Cleaning the device ........................................................................ 48
10.3. Cleaning the electrodes ............................................................... 48
10.4. Replacing the seal on a device with G2" nut .................... 49
10.5. If you encounter problems ..........................................................49
11. SPARE PARTS AND ACCESSORIES ............................................... 53
12. PACKAGING, TRANSPORT ...................................................................54
14. DISPOSAL OF THE DEVICE ................................................................. 54
13. STORAGE ....................................................................................................... 54
2
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Page 5
Failure to observe this warning may result in damage to the device
Type 8041
About this manual
1. ABOUT THIS MANUAL
This manual describes the entire life cycle of the device. Please keep
this manual in a safe place, accessible to all users and any new owners.
This manual contains important safety information.
Failure to comply with these instructions can lead to hazardous
situations.
• This manual must be read and understood.
1.1. Symbols used
danger
Warns against an imminent danger.
• Failure to observe this warning can result 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.
attention
Warns against a possible risk.
• Failure to observe this warning can result in substantial or minor
injuries.
note
Warns against material damage.
•
or system.
Indicates additional information, advice or important
recommendations.
Refers to information contained in this manual or in other
documents.
→ Indicates a procedure to be done.
1.2. Definition of the word "device"
The word "device" used within these operating instructions refers to
the flowmeter type 8041.
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3
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Type 8041
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 8041 flowmeter is intended exclusively to measure the flow
rate in liquids.
• This device must be protected against electromagnetic interference, ultraviolet rays and, when installed outdoors, the effects of
climatic conditions.
• This device must be used in compliance with the characteristics
and commissioning and use conditions specified in the contractual documents and in the operating instructions.
• Requirements for the safe and proper operation of the device
are proper transport, storage and installation, as well as careful
operation and maintenance.
• Only use the device as intended.
→ Observe any existing restraints when the device is exported.
3. BASIC SAFETY
INFORMATION
This safety information does not take into account:
• any contingencies or occurences that may arise during installation,
use and maintenance of the devices.
• the local safety regulations for which the operating company
is responsible including the staff in charge of installation and
maintenance.
Danger due to high pressure in the installation.
Danger due to electrical voltage.
Danger due to high temperatures of the fluid.
Danger due to the nature of the fluid.
Various dangerous situations
To avoid injury take care:
• to prevent any unintentional power supply switch-on.
• to ensure that installation and maintenance work are
carried out by qualified, authorised personnel in possession of
the appropriate tools.
• to guarantee a defined or controlled restarting of the process,
after a power supply interruption.
4
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Page 7
note
note
Type 8041
Basic safety information
Various dangerous situations (cont'd)
To avoid injury take care:
• not to use the device for the measurement of gas flow rates.
• not to use the device in explosive atmospheres.
• not to use the device in an environment incompatible with the
materials it is made of.
• not to subject the device to mechanical loads (e.g. by placing
objects on top of it or by using it as a step).
• not to make any external or internal modifications to the device.
• to use the device only if in perfect working order and in compliance with the instructions provided in these operating
instructions.
• to observe the general technical rules when installing and using
the device.
The device may be damaged by the fluid in contact with.
• Systematically check the chemical compatibility of the component materials of the device and the fluids likely to come into
contact with it (for example: alcohols, strong or concentrated
acids, aldehydes, alkaline compounds, esters, aliphatic compounds, ketones, halogenated aromatics or hydrocarbons,
oxidants and chlorinated agents).
Elements / Components sensitive to electrostatic discharges
• This 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 the EN 613405-1 and 5-2 norms.
• Also ensure that you do not touch any of the live electrical
components.
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5
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Type 8041
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.
They can also be found on the Internet under:
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 user manuals and technical data sheets regarding
the type 8041 at:
www.burkert.com
5. DESCRIPTION
5.1. Area of application
The device is used to measure the flow of neutral or slightly aggressive
fluids with a conductivity of more than 20 µS/cm in DN06 to DN400
pipes.
5.2. General description
5.2.1. Construction
The device comprises an electronic module and a PVDF or stainless
steel measurement sensor.
The flow sensor comprises two electrodes and a magnetic system.
The connection of the device to the process is made depending on
the version, either by a G2'' nut or a clamp.
Electrical connection is made via two cable glands on a 6-pin terminal
block.
The device requires an 18-36 VDC power supply and has:
• a frequency output,
• a relay output,
• a 4-20 mA current output.
5.2.2. Operating principle
The magnetic system in the flow sensor generates a magnetic field
in the fluid, perpendicular to the flow direction, see Fig. 1. The electrodes on the flow sensor ensure electrical contact with the fluid.
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Type 8041
Description
When the fluid flows over them, a voltage is measured between the
two electrodes. This voltage is proportional to the fluid velocity.
Fig. 1: Operating principle of the flow sensor
5.3. Description of the name plate
132
FLOW:8041- IND LONG SST
18-36V —/220mA 4-20mA REL:230VAC~/3A CO
SN/ 2135
00552780
Made in France
10
Fig. 2: Name plate of the device (example)
1. Power supply / Max. consumption.
2. Measured value and type of the device
3. Specification of the flow sensor
W47MG
678911
4
5
4. Compact housing
5. Manufacturing code
6. Relay data
7. Conformity logo
8. Warning: Before using the device, take into account the tech-
nical specifications described in these operating instructions.
9. Current output
10. Serial number
11. Order code
5.4. Available versions
Flow
sensor
Flow sensor Seal of the flow
Short PVDF FKM 558064
Long 558065
Short Stainless steel FKM 552779
Long Stainless steel FKM 552780
Clamp Stainless steel EPDM or FEP
1)
Ordered separately. See chap. 11.
Material Order code
sensor
1)
564688
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7
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Type 8041
Technical data
6. TECHNICAL DATA
6.1. Conditions of use
Ambient temperature -10 °C...+60 °C
Air humidity < 80%, non condensated
Protection class acc. to
EN 60529
Degree of pollution Degree 2 acc. to EN 61010-1
Installation category Category I acc. to EN 61010-1
Max height above see level 2000 m
6.2. Conformity to standards and
directives
The device conforms to the EC directives through the following
standards:
• EMC: EN 50081-1, EN 61000-6-2
• LVD: EN 61 010-1
• Pressure: article 3§3 of the Pressure Directive 97/23/CE. Acc. to
the Pressure Directive 97/23/CE: the device can only be used in
the following cases (depending on the max. pressure, the DN of
the pipe and the fluid)
IP65, with cable connected and
cable gland tightened and cover
screwed on to the electronic module
Type of fluid Conditions
Fluid group 1, par. 1.3.a Forbidden
Fluid group 2 par. 1.3.a
Fluid group 1 par. 1.3.b PNxDN ≤ 2000
Fluid group 2 par. 1.3.b
DN ≤ 32
or DN > 32 and PNxDN ≤ 1000
DN ≤ 200
or PN ≤ 10
or PNxDN ≤ 5000
6.3. Mechanical data
Table 1 : Wetted parts
Part Material
Holder of the flow sensor
Electrodes
Clamp (only clamp version)
Earthing ring (only if flow sensor holder in
PVDF)
Holder of the electrodes (only if flow
sensor holder in stainless steel)
Seal of the flow sensor (version with
G2" nut)
PVDF or stainless steel
1.4404 / 316L
Stainless steel
1.4404 / 316L
Stainless steel
1.4404 / 316L
Stainless steel
1.4404 / 316L
PEEK
FKM (FDA approved)
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170
Type 8041
Technical data
Table 2 : Parts not in contact with the fluid
Part Material
Housing, cover, nut
• holder of the flow sensor in
• PPA, glass fiber reinforced
stainless steel
• holder of the flow sensor in
• PC, glass fiber reinforced
PVDF
Screws of the cover Stainless steel
Cable gland PA
Seal of the cover EPDM
Seal of the cable gland Neoprene
Clamp
Holder of the flow sensor
Electrodes
Electrodes holder
Fig. 4: Parts of the flow sensor in stainless steel with a clamp
connection
116
116
Electrodes holder
Holder of the
flow sensor
Electrodes
Earthing ring
Fig. 3: Parts of the flow sensor holder in stainless steel (left) or in
PVDF (right), devices with a G2'' nut
134
88
Fig. 5: Dimensions of the 8041 [mm]
English
88
199
162
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Type 8041
Technical data
Table 3 : Dimension H in mm of the flowmeter 8041 with a G2" nut and inserted into an S020 fitting
H
Spigot, in plastic
T-fitting
Saddle
DN6 163
DN8 163
DN15 168
DN20 166
DN25 166
DN32 169
DN40 173 169
DN50 179 204 174
DN65 179 203 187 180
DN80 207 193 185
DN100 221 200 195
DN110 208
DN125 215 233 206
DN150 225 242 217
DN180 249
DN200 261 263 238
DN250 281 298
DN300 293 317
DN350 306 329
DN400 321
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English
Welding tab with radius, in
stainless steel
Page 13
Type 8041
Technical data
Table 4 : Dimension H in mm of the flowmeter 8041 with a clamp
connection and inserted into an S020 fitting
H
T-fitting
Welding socket
DN32 181 181
DN40 186 186
DN50 191 191
DN65 199 199
DN80 205 205
DN100 211 211
6.4. General data
Pipe diameter DN06 to DN400
Type of fitting S020
Fluid conductivity > 20 µS/cm
1)
Determined in the following reference conditions: fluid = water, water
and ambiant temperatures = 20 °C, upstream and downstream distances
respected, appropriate pipe dimensions
Fluid temperature
• with holder of the flow
sensor in stainless steel
• with holder of the flow
sensor in PVDF
Fluid pressure
• with holder of the flow
sensor in stainless steel
• with holder of the flow
sensor in PVDF
Flow rate measurement
• Measuring range
• Linearity
• Repeatability
• Accuracy with standard
K factor
• Accuracy with Teach-in
The fluid temperature may be
restricted by the fluid pressure and
the material of the S020 fitting used
(see Fig. 6 and Fig. 7).
• -15...+150 °C
• 0...+80 °C
The fluid pressure may be restricted
by the fluid temperature, the material
of the S020 fitting used and the DN
of the S020 fitting used (see Fig. 6
and Fig. 7).
• PN10 with a fitting in plastic,
PN16 with a fitting in metal
• PN10
• 0,2 to 10 m/s
1)
• ±0,5% 1) of the full scale
1)
• ±0,25%
• ±3,5%
• ±0,5%
of the measured value
1)
of the measured value
1)
of the measured value
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11
Page 14
Type 8041
Technical data
P [bar]
10
9
8
7
6
5
4
3
2
1
0
PVC + PP
+10
PVDF (PN10) / Metal
PVC (PN10)
+30
PP (PN10)
+50 +70
T [°C]
Fig. 6: Fluid pressure-temperature dependency of the 8041 with a
flow sensor holder in PVDF, inserted into an S020 fitting in
metal, PVDF, PVC or PP
P (bar)
16
15
14
13
12
PVDF
11
10
9
8
PVC + PP
7
6
5
4
3
2
1
0
-20 0 +20 +40 +60 +80 +100 +120
Metal
(PN16)
PVC (PN10)
PP (PN10)
1)
DN100 for measuring
devices with a clamp con-
nection (PN10)
PVDF (PN10)
+150
T (°C)
1)
Except DN100 for measuring devices with a clamp connection
Fig. 7: Fluid pressure-temperature dependency of the 8041 with a
flow sensor holder in stainless steel, inserted into an S020
fitting in metal, PVDF, PVC or PP
6.5. Electrical data
Power supply 18-36 V DC, filtered and regulated
Current consumption 220 mA (at 18 V DC)
Power source (not
supplied)
limited energy source (in accordance to
UL 61010-1, paragraph 9.3)
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Type 8041
Technical data
Current output
• Type of output
• Accuracy
• Refresh time
• Max. loop impedance
• 4-20 mA, sinking or sourcing wiring
• ± 1% (0,16 mA)
• 100 ms
• 1100 W at 36 V DC, 330 W at
18 V DC
Frequency output
• Frequency
• Duty cycle
• Max current
• Protected against
• 0-240 Hz
• 50 % ± 1 %
• 100 mA max.
• yes
short-circuits and
polarity reversal
Relay output • Normally open or normally closed,
depending on the wiring
• 3 A, 250 V AC max.
Alarm
• Full scale exceeded
• Error signal
• 22 mA and 256 Hz
• 22 mA and 0 Hz
6.6. Electrical connections
Type of connection Through two M20x1,5 cable
glands
Cable specifications
• cable type
• Cross section
• shielded
• 0,5 to 1,5 mm
2
• Diameter of each cable:
- if only one cable is used
- 6...12 mm
per cable gland
- if two cables are used per
cable gland
- 4 mm, with the supplied
multi-way seal
6.7. K factors
The S020 fitting with weld end connections is available
in two versions: a version for the measuring devices with
a G2'' nut and a version for the measuring devices with a
clamp connection.
• Use the K factor of the fitting used.
The device measures the flow velocity (in m/s) of the fluid and converts
it into a current (in mA) and a frequency rating (in Hz).
The current I or the frequency f are proportional to the flow rate Q (l/s),
the proportionality factor is called the "K factor":
f = K1*Q
*Q + 4
I = K
2
and K2 in pulse/litre
with K
1
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13
Page 16
Type 8041
Quick installation
The following formulae are used to calculate the K1 and K2 factors
needed to convert the current or frequency into a flow rate:
Full scale K factor K
10 m/s
K1 =
K
5 m/s
K1 =
K
2 m/s
K1 =
K
where K
= K factor of the S020 fitting used
fitting
100
fitting
200
fitting
500
fitting
1
K2 =
3*K
K2 =
3*K
K2 =
3*K
K factor K
20
fitting
40
fitting
100
fitting
2
Example:
If the full scale of the device is set to 5 m/s, the value of the current
output will be:
I = 40 Q + 4
3*K
fitting
with I in mA, K
in pulse/litre and Q in l/s.
fitting
7. QUICK INSTALLATION
→ Unpack the device.
No
Order code
correct?
yes
Contact your Bürkert
agent
→ Loosen 4 screws and remove
cover.
→Select the frequency of the main
supply with switch 1, see chap.
9.4.
→ Select the filter with switches 2
and 3, see chap. 9.5.
→ Select the current output type,
see chap. 8.3.1.
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Type 8041
Quick installation
→ Select the measuring range with
switches 4 and 5, see chap. 9.6.
→ Install the device on the
pipe.
Calibrate the full scale of
the installation?
No
→ Thread the cables through the
cable glands and make the connections to the electronic board,
see chap. 8.3.
→ Connect the shield on the
power cable to the earth, see
chap. 8.3.
→ Fill the pipe.
→ Energize the device.
→ Calibrate the flow zero
point, see chap. 9.7.
yes
→ Calibrate the full scale, see
chap. 9.8.
The 10 bargraph LEDs
go ON?
yes
No
→Set the relay output parameters,
see chap. 9.9.
English
→ Make
sure the fluid
velocity > 2 m/s and
< 10 m/s.
15
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Type 8041
INstallation
8. INSTALLATION
Green LED flashes once?
yes
→ Put the cover on the device as
dsecribed in Fig. 17, chap. 8.3.
→ Tighten the 4 screws of the
cover in an alternating pattern.
The device is ready for use.
No, see chap. 10.5
8.1. Safety instructions
danger
Risk of injury due to high pressure in the installation.
• Stop the circulation of fluid, cut off the pressure and drain the
pipe before loosening the process connections.
Risk of injury due to high fluid temperatures.
• Use safety gloves to handle the device.
• Stop the circulation of fluid and drain the pipe before loosening
the process connections.
Risk of injury due to the nature of the fluid.
• Respect the prevailing regulations on accident prevention and
safety relating to the use of aggressive fluids.
Risk of injury due to electrical voltage.
• Shut down the electrical power source of all the conductors and
isolate it before carrying out work on the system.
• Observe all applicable accident protection and safety regulations for electrical equipment.
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Type 8041
INstallation
Warning
Risk of injury due to non-conforming installation.
• The electrical and fluid installation can only be carried out by
qualified and skilled staff with the appropriate tools.
• Install appropriate safety devices (correctly rated fuse and/or
circuit-breaker).
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.
Warning
Risk of injury if the fluid temperature/pressure dependency is
not respected.
• Observe the fluid temperature/pressure dependency according
to the nature of the material of the fitting used (see Fig. 6 and
Fig. 7).
8.2. Installation onto the pipe
8.2.1. Recommandations for installing the
8041 on the pipe
→ Choose a fitting appropriate to the velocity of the fluid inside the
pipe; refer to the graphs below:
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17
Page 20
10
m
/h
m/s
fps
DN 65
DN 50 (DN65)*
DN 40 (DN50)*
DN 32 (DN40)*
DN 25 (DN32)*
DN 20 (DN25)*
DN 15 (DN15 ou DN20)*
DN 400
DN 350
DN 300
DN 250
DN 200
DN 150
DN 125
DN 100
DN 80
DN 6
DN 8
Type 8041
INstallation
Example
DN15 (DN15 or DN20)*
DN8
DN6
m/s
fps
30
3
/hthe ideal flow velocity is between
DN400
DN350
DN300
DN250
DN200
DN150
DN125
DN100
DN80 (DN100)*
DN65 (DN80)*
DN50 (DN65)*
DN40 (DN50)*
DN32 (DN40)*
DN25 (DN32)*
DN20 (DN25)*
Fluid velocity
0.1
0.02
0.01
0.2
0.05
0.1 0.3 0.5 1 3 5
0.3 0.5 1 3 5 10
3
l/min
US gpm
5000
100000
20000
2000
50000
10000
20000
30000
1000
5000
500
10000
2000
5000
1000
200
3000
100
2000
500
50
1000
200
500
20
100
200
50
10
100
5
50
10
20
20
5
0.5
10
2
0.1
0.2
5
1
2
0.5
1
0.05
0.5
0.2
1
2
flow rate
Example:
- Specification: if the nominal flow rate is 10 m
2 and 3 m/s
- Solution: intersection between flow rate and flow velocity in the graph gives the
appropriate pipe diameter, DN40 (or DN50 for the asterisked fittings).
18
English
* For the fittings:
- with external thread connections acc. to SMS 1145 ;
- with weld end connections acc. to SMS 3008, BS 4825 / ASME BPE
or DIN 11850 Range 2;
- with Clamp connections acc. to SMS 3017 / ISO 2852,
BS 4825 / ASME BPE or DIN 32676.
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Type 8041
INstallation
→ Install the device on the pipe to have the upstream and down-
stream distances respected according to the design of the
pipes, refer to standard EN ISO 5167-1 and Fig. 8:
50 x DN 5 x DN
With control valve Pipe with 2 elbows at 90° in
25 x DN 5 x DN 20 x DN 5 x DN
Pipe with 2 elbows at 90° Pipe with 1 elbow at 90° or
18 x DN 5 x DN 15 x DN 5 x DN
With pipe expansion With pipe reduction
Fig. 8: Upstream and downstream distances depending on the
design of the pipes.
40 x DN 5 x DN
3 dimensions
1 T-piece
→ Respect the following additional mounting conditions to ensure
that the measuring device operates correctly:
- We recommend to install the device at a 45° angle to the horizontal centre of the pipe to prevent deposits on the electrodes
and false measurements due to air bubbles (see Fig. 9);
45°
45°
Fig. 9: Mounting angle on the pipe
- Ensure that the pipe is always filled in the section around the
device (see Fig. 10).
- When mounting vertically ensure that the flow direction is in an
upward direction (see Fig. 10).
- Prevent the formation of air bubbles in the pipe in the section
around the device (see Fig. 11).
- Always mount the device upstream a possible injection point
in the pipe of a high-conductivity fluid (for example: acid, base,
saline,...).
Horizontal mounting
Correct Incorrect
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19
Page 22
1
2
3
5
4
Type 8041
INstallation
Vertical mounting
flow direction
Correct Incorrect
Fig. 10: Filling of the pipe
Correct
Correct Incorrect
Incorrect
flow direction
Fig. 11: Air bubbles within the pipe
→ If necessary, use a flow conditioner to improve measurement
precision.
8.2.2. Installation into the pipe of a 8041
with a G2'' nut
Observe the installation recommendations described at
chap. 8.2.1 and in the operating instructions of the S020.
→ Install the S020 fitting on the pipe.
→ Insert the nut (see mark 3, Fig. 12) on the fitting.
→ Insert the snap ring (mark 2, Fig. 12) into the groove (mark 5,
Fig. 12).
→ Position the cable glands parallel to the pipe and insert the
device (mark 1, Fig. 12) into the fitting.
→ Tighten the nut (mark 3, Fig. 12) by hand on the device.
Electrodes
Flow direction
Fig. 12: Installation into the pipe of the flowmeter with a G2'' nut
20
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Page 23
→
Type 8041
INstallation
8.2.3. Installation into the pipe of a 8041
with a clamp connection
Observe the installation recommendations described at
chap. 8.2.1 and in the operating instructions of the S020.
→ Install the S020 fitting on the pipe.
→ Install the seal (mark 1) on the
3
S020 fitting.
→ Make sure that the polarizing pin
(mark 2) is on the fitting.
→ Insert the device (mark 3) into
the fitting. Position the device in
order the arrow on the side of the
4
housing indicates the direction
of the flow: the totalizers will
2
1
increment.
→ Tighten by hand the clamp collar
(mark 4).
→ Charge the pipe to make sure the
installation is tight.
flow direction
Fig. 13: Installation into the pipe of a 8041 with a clamp connection
8.3. Wiring
danger
Risk of injury due to electrical voltage.
• Shut down the electrical power source of all the conductors and
isolate it before carrying out work on the system.
• Observe all applicable accident protection and safety regulations for electrical equipment.
• Use a high quality electrical power supply (filtered and
regulated).
• Use cables with an operating temperature limit correct for
your application.
Protect the power supply by means of a 300 mA fuse
and a switch.
→ Do not install the cables near high voltage or high fre-
quency cables. If this cannot be avoided, observe a min.
distance of 30 cm.
→ Loosen the 4 screws of the cover to access the electronic board
of the device (see Fig. 14).
English
21
Page 24
lation to eliminate the potential differences that may occur
).
capacitor can be connectec between the negative power
Type 8041
INstallation
3
A
B
C
NO
2
NC
123456
4...20V+V-PEPls+Pls-
Selector A: Sink/source
selector of the 4-20 mA
output
Terminal block 3
1
Terminal 1: 4-20 mA output
Terminal 2: V+ (positive
voltage)
Connector 1: connection of the
flat cable coming from the flow
sensor (to energize the flow
sensor)
Terminal block 2: wiring the
relay output
C: common point
NO: normally open
NC: normally closed
B
LED
: status LED of the relay
(LED ON = contact closed)
Terminal 3: V- (power supply
ground)
Terminal 4: PE, shield of
the power supply cable;
Earth cable coming from the
housing and, second cable
on a version with flow sensor
holder in stainless steel (see
Fig. 15)
Terminal 5: Pls+, positive
frequency output
Terminal 6: Pls-, negative
frequency output
Fig. 14: Terminal assignment
Make sure the installation is equipotential (power supply
- 8041):
→ Connect together the various earth spots in the instal-
between two earthes.
→ In the housing, connect the power supply cable shield to
terminal no. 4 of the electronic board connector (Fig. 15
On a version with stainless steel flow sensor, a second
cable is coming from the sensor.
→ 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
supply terminal and the earth (marked 1, Fig. 16).
• If the pipes are made of metal:
→ connect to the same earth the different metallic instru-
ments (valve, pump...) located near the device (marks 2,
Fig. 16).
• If the pipes are made of plastic:
→ insert the metal parts (not provided) in the plastic pipes,
upstream and downstream of the device (marked 2, Fig.
16).
→ connect the metal parts to the same earth (Fig. 16).
22
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Page 25
Type 8041
INstallation
note
The device is not tight if only one or none of the cable glands
is used
• The device is only tight when the cable glands are either wired or
sealed. To seal a cable gland, do the following:
→ Loosen the nut of the unused cable gland.
→ Remove the transparent disk.
→ Insert the supplied stopper gasket.
→ Screw the nut of the cable gland.
→ Loosen the nuts of the cable glands.
→ Insert each cable through a nut than through a cable gland.
Power cable shield
123456
Earth cable coming from the
housing
Fig. 15: Earth connection terminal
Second cable on a version with
a flow sensor holder in stainless
steel
Power cable shield
2
Fig. 16: Earthing the device
2
18-36 VDC
1
→ Wire the 4-20 mA current output (see 8.3.1).
→ Wire the frequency output (see 8.3.2).
→ Wire the relay output (see 8.3.3).
→ Put the cover of the housing as described in Fig. 17.
→ Screw the 4 screws in an alternating pattern.
Fig. 17: Position of the cover of the device
+
-
Power supply
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23
Page 26
Type 8041
INstallation
8.3.1. Wiring the 4-20 mA output
The current output of the 8041 can be connected to a PLC or a
valve, either in sourcing mode or in sinking mode.
→ Set the selector of the electronic board to the sourcing or the
sinking position (see Fig. 18 or Fig. 19).
→ Connect the 4-20 mA output in sourcing mode (see Fig. 18) or
in sinking mode (see Fig. 19).
→ Earth the device (see Fig. 18 or Fig. 19).
4-20 mA input
at external
instrument
Selector to
source
* If direct earthing is not possible, connect a 100 nF / 50 V condensator
between the negative terminal of the voltage supply and the earth.
+
-
4...20
300 mA
I
1 2 3 4 5 6
V+ V- PE Pls+Pls-
*
Fig. 18: Connection of the current output in sourcing mode
Power supply
+
-
18-36 VDC
*
Power supply
+
-
18-36 VDC
4-20 mA input
at external
instrument
Selector to sink
* If direct earthing is not possible, connect a 100 nF / 50 V condensator
between the negative terminal of the voltage supply and the earth.
+
-
4...20 V+ V- PE Pls+Pls-
300 mA
I
1 2 3 4 5 6
Fig. 19: Connection of the current output in sinking mode
8.3.2. Wiring the frequency output
→ Connect the frequency output:
- to a PLC in PNP or in NPN mode (see Fig. 20 and Fig. 21) ;
- or to a load such as an electromechanical counter or a relay
(see Fig. 22),
- or to a load such as an electronic counter with its own power
supply (see Fig. 23).
24
English
Page 27
Type 8041
INstallation
V+ 0V
Input
I
8041
V+
0V
123456
4...20 V+ V- PE Pls+Pls-
Fig. 20: PNP connection of the frequency output to a PLC
0V
Input
I
6
Pls-
8041
V+
12345
4...20 V+ V- PE Pls+
Fig. 21: NPN connection of the frequency output to a PLC
I
8041
123456
4...20 V+ V- PE Pls+Pls-
Fig. 22: Connection of the frequency output to an electromecha-
nical counter or a relay
GND1
V2
I
GND2
8041
V1
123456
4...20 V+ V- PE Pls+Pls-
Fig. 23: Connection of the frequency output to an electromecha-
nical counter with its own power supply
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25
Page 28
→
Do not apply both a dangerous voltage and a safety extra low
Type 8041
INstallation
8.3.3. Wiring the relay output
The relay output operates either in normally open mode (NO) or in
normally closed mode (NC), depending on the connection of the
load to the electronic board of the device.
Protect the relay with a fuse (3 A max.) and, depending
on the application, with a circuit breaker.
voltage (SELV) to the relay.
→ Wire the relay output to operate in normally open mode
(see Fig. 24) or in normally closed mode (see Fig. 25).
→ Earth the device (see Fig. 24 or Fig. 25).
Power supply
18-36 VDC
+
-
300 mA
250 VAC
Protection circuit
Solenoid valve
(or alarm)
250 VAC, 3 A max.
* If direct earthing is not possible, connect a 100 nF / 50 V condensator
between the negative terminal of the voltage supply and the earth.
L
N
3 A
C
NO
NC
Relay protection cap
1
4...20
V+
8041
*
3 4 5 62
PE
Pls+
V-
Pls-
Fig. 24: Connection of the relay output for a normally open
operating
26
English
Page 29
Type 8041
Adjustment and commissioning
Power supply
18-36 VDC
+ -
300 mA
1 2
250 VACLN
Protection circuit
Solenoid valve
(or alarm)
250 VAC, 3 A max.
* If direct earthing is not possible, connect a 100 nF / 50 V condensator
between the negative terminal of the voltage supply and the earth.
3 A
C
NO
NC
Relay protection cap
4...20 V+ V- PE Pls+Pls-
*
345
8041
6
Fig. 25: Connection of the relay output for a normally closed
operating
9. ADJUSTMENT AND
COMMISSIONING
9.1. Safety instructions
danger
Risk of injury due to electrical voltage.
• Observe all applicable accident protection and safety regulations for electrical equipment.
Warning
Risk of injury due to non-conforming operating.
Non-conforming operating could lead to injuries and damage the
device and its surroundings.
• The operators in charge of operating must have read and understood the contents of these operating instructions.
• In particular, observe the safety recommendations and intended
use.
• The device/installation must only be operated by suitably trained
staff.
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27
Page 30
Type 8041
Adjustment and commissioning
Warning
Danger due to non-conforming commissioning.
Non-conforming commissioning can lead to injuries and damage
the device and its surroundings.
• Before commissioning, make sure that the staff in charge have
read and fully understood the contents of these operating
instructions.
• In particular, observe the safety recommendations and intended
use.
• The device / the installation must only be commissioned by suitably trained staff.
note
The device may be damaged by the environment
• Protect this device against electromagnetic interference,
ultraviolet rays and, when installed outdoors, the effects of the
climatic conditions.
When the device is energized and if the cover is open,
there is no protection against electric shocks.
9.2. Description of the electronic
board
The device has 2 operating modes: the Read mode and the Parameterizing mode. The functions of each mode are summarised in the
following table.
Operating mode Functions
Read To view:
• the fluid velocity measured by the device;
• the values set for the relay function.
Parameterizing • To calibrate the device.
• To set the relay parameters.
The 5 switches, the push-button, the green LED, the red LED
and the bargraph are used to set the parameters of the device
(see Fig. 26).
28
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Page 31
Type 8041
Adjustment and commissioning
Green LED:
.....
Flashing once every second: the device is energized.
Flashing once up to 5 times: to know which parameter
the bargraph is indicating
10-LED bargraph:
To view and set the device parameters:
-
1 LED ON = 10% of the full scale (or 10 seconds)
-
in Read mode
LED flashing "x" times = "x"% of the full scale (or "x"
seconds)
-
in Parameterizing mode
LED flashing once = 1% of the full scale (or 1 second)
Fig. 26: Electronic board of the device
1 2 3 4 5 6
4...20 V+ V- PE Pls+Pls-
1 2 3 4 5 6 7 8 9 10
Push-button
Red led:
-
: device in Read mode
-
: device in Parameterizing
mode
.....
-
flashing 1 up to 5
times: error (see 10.5)
ON
1 2 3 4 5 6
Switches 1 to 5: to set the device parameters
(frequency of the main supply, filter of the measurements, measuring range)
Switch 6: unused
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29
Page 32
Type 8041
Adjustment and commissioning
9.3. General diagram of the Read and Parameterizing modes
Read mode
2
Parameterizing mode
Hold > 2 s
Flow zero calibration
alternately
Full scale calibration
X
Release when
desired function is
displayed*
Confirm the choice
Hold > 2 s
1
* If no action for 10 s, the device goes back to Read mode, using the parameters from the previous adjustment.
Calibration in progress
displayed
30
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Page 33
Type 8041
Adjustment and commissioning
Short press
Short press
Short press
2
1
Current way of
switching*
Current low switching
threshold*
Current high switching
threshold*
Current time delay
before switching*
Short press
Relay
Hold > 2 s
Hold > 2 s
Hold > 2 s
Hold > 2 s
Hysteresis switching
alternately
Window switching
Unit increment: LED
flashes up to 9 times
Press and hold to
set the units
Repeat the sequence if necessary
X
Release when
desired function is
displayed*
......
The LEDs then come
on one after the other
(increment in factors
of ten)
Unit increment: LED
flashes up to 9 times
Confirm the choice displayed
Hold > 2 s
X
Release with the
desired factor of
ten is reached*
X
Release
with the
desired unit is
reached*
2
Confirm the displayed value
Hold > 2 s
* If no action for 10 s, the device goes back to Read mode, using the parameters from the previous adjustment.
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31
Page 34
Type 8041
Adjustment and commissioning
9.4. Selecting the frequency of the
main supply
Switch 1 is used to select the frequency of the current provided by
the electricity network.
→ Position switch 1 to ON or OFF depending on the frequency of
the main supply (see Fig. 26, chap. 9.2, and the following table).
Frequency of the power supplied by the network
50 Hz OFF
60 Hz ON
Position of switch 1
9.5. Filter selection
The filter is used to attenuate the fluctuations in the flow indicated by
the bargraph and on the current and frequency outputs. The device
can operate with or without filter.
→ Position switch 2 (see Fig. 26, chap. 9.2, and the following
table) to activate or deactivate the filter feature.
Filter Position of switch 2
disabled OFF
enabled ON
When the filter is enabled, switch 3 is used to select the filter level:
slow or fast.
"Slow" filter is used to even out high variations in flow (example: fluid
containing air bubbles), see Fig. 27.
"Fast" filter is used to even out low variations in flow (see Fig. 27).
Flow attenuated with fast filter
Actual flow rate
t (s)
Flow attenuated with low filter
t (s)
t (s)
Fig. 27: Flow filters
→ Position switch 3 to the filter level selected (see Fig. 26, and the
following table).
32
English
Page 35
→
→
Type 8041
Adjustment and commissioning
Filter Position of switch 3
slow
(Response time 10 to 90 % = 14 s)
fast
(Response time 10 to 90 % = 5 s)
OFF
ON
9.6. Selecting the measurement
range
The output signal is proportional to the measured flow velocity.
Switches 4 and 5 are used to adjust the measuring range of the
device to your application.
→ Position switches 4 and 5 to select the measuring range (see
Fig. 26, and the following table).
After the measuring range has been modified, the percentages set for the low and high switching thresholds are
applied to the new full scale selected.
Measuring range Position of
switch 4
0 to 2 m/s ON OFF
0 to 5 m/s OFF ON
0 to 10 m/s OFF OFF
0 to calibrated full scale
(between 2 and 10 m/s)
ON ON
Position of switch
5
9.7. Calibrating the flow zero point
Calibrate the device on commissioning and after each
maintenance task.
• Before calibrating the zero point on commissioning:
→ immerse the measuring element in the fluid for 24 h
before calibration.
• Before calibrating the zero point after each maintenance
task:
→ immerse the measuring element in the fluid for 1 h before
calibration.
Before calibration, ensure that the pipe does not contain
any air bubbles and that the fluid is not moving.
→ Fill the pipe with fluid.
→ Stop the flow.
→ Calibrate the "zero flow" point (see Fig. 28 and Fig. 29).
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33
Page 36
.....
.....
.....
Type 8041
Adjustment and commissioning
Notation convention:
Red LED state
Green LED state
Step 1
To calibrate automatically
A
Fig. 28: Calibration of the zero flow point, part 1
Device in Read mode?
NO
YES
→ Press and hold the push
button.
After 2 s, device is in Parameterizing mode:
Bargraph alternates between:
Zero flow calibration
1 2 3 4 5 6 7 8 9 10
Full scale calibration
→ Release push button when
bargraph shows zero flow
calibration.
To select the calibration of the
other parameter
B C
To go back to the Read mode
See general configuration diagram,
chap. 9.3
34
English
Page 37
.....
Type 8041
Adjustment and commissioning
A
To calibrate automatically
→ Briefly press push button.
Calibration in progress
End of calibration: red LED
goes off?
YES
Zero point stored.
Go back to Read mode.
NO
To select the calibration of the
other parameter
→ Press and hold the push
button until...
...bargraph goes back to step 1, Fig.
Red LED flashes briefly
twice: zero point has not
been calibrated.
→ Briefly press push button
Go back to Read mode
using the zero point of the
previous calibration.
B
28
→ Check that the calibration
instructions are respected
(see beginning chap. 9.7).
C
To go back to the Read mode
→ Wait for 10 s.
Go back to Read mode
without confirming the
selection displayed.
→ Restart calibration
of the zero flow
point.
Fig. 29: Calibration of the zero flow point, part 2
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35
Page 38
Type 8041
Adjustment and commissioning
9.8. Calibrating the full scale
The Fig. 30 and the Fig. 31 show the relation between the measured
fluid velocity and the value of the frequency or current provided by
the outputs.
Full scale error
Hz
256
240
0
0.1
Calibrated full scale
Full scale + 20%
Fig. 30: Relation between the measured fluid velocity and the value
of the frequency output
m/s
Full scale error
mA
22
20
4
0
0.1
Calibrated full scale
Full scale + 20%
m/s
Fig. 31: Relation between the measured fluid velocity and the value
of the current output
If no predefined measuring range is applicable to your process, the
device can be calibrated with the actual max. flow velocity of the
application.
The low bound of the measuring range is 0 m/s.
→ Position the switches 4 and 5 to ON (see Fig. 26, chap. 9.2).
→ Install the device on the pipe as described in chap. 8.
→ Allow the fluid to circulate in the pipe at maximum velocity.
→ Calibrate the full scale, see Fig. 32 and Fig. 33.
36
English
Page 39
.....
.....
.....
Type 8041
Adjustment and commissioning
Notation convention:
Red LED state
Green LED state
Step 1
To calibrate automatically
A
Fig. 32: Calibration of the full scale, part 1
Device in Read mode?
NO
YES
→ Press and hold the push
button.
After 2 s, device is in Parameterizing mode:
Bargraph alternates between:
Zero flow calibration
1 2 3 4 5 6 7 8 9 10
Full scale calibration
→ Release push button when
bargraph shows full scale
calibration.
To select the calibration of
the other parameter
B C
To go back to the Read mode
See general configuration diagram,
chap. 9.3
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37
Page 40
.....
Type 8041
Adjustment and commissioning
A
To calibrate automatically
→ Briefly press push button.
Calibration in progress
End of calibration: red LED
goes off?
YES
Full scale value stored
Go back to Read mode
NO
B
To select the calibration of the
other parameter
→ Press and hold the push
button until...
...bargraph goes back to step
1, Fig. 32
Red LED flashes:
4 times: fluid velocity < 2 m/s
5 times: fluid velocity < 10 m/s
The full scale cannot be calibrated
→ Press push button for 2 s.
Go back to Read mode using the
full scale selected or previously
calibrated.
C
To go back to the Read mode
→ Wait for 10 s.
Go back to Read mode without confirming the selection displayed.
Fig. 33: Calibration of the full scale, part 2
38
English
Page 41
Type 8041
Adjustment and commissioning
9.9. Setting the parameters of the relay output
The Fig. 34 shows the behaviour of the relay output depending on the parameter settings and the measured velocity.
m/s
High threshold
Low threshold
2 s 2 s
2 s
t
Hysteresis switching
Switching time-out = 0 s
Switching time-out = 2 s
Window switching
Switching time-out = 0 s
Switching time-out = 2 s
Connection of the relay output
NO-wired relay
NC-wired relay
NO-wired relay
NC-wired relay
NO-wired relay
NC-wired relay
NO-wired relay
NC-wired relay
Relay
activated
deactivated
activated
deactivated
activated
deactivated
activated
deactivated
activated
deactivated
activated
deactivated
activated
deactivated
activated
deactivated
Fig. 34: Behaviour of the relay output depending on the parameter settings and the measured velocity
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39
Page 42
Type 8041
Adjustment and commissioning
The wiring of the relay determines the function of the relay:
Normally Open (NO) or Normally Closed (NC).
The following parameters of the relay output can be set:
- the switching way: window or hysteresis (see chap. 9.9.1)
- the value of the low switching threshold, as a percentage of the
full scale (see chap. 9.9.2)
- the value of the high switching threshold, as a percentage of
the full scale (see chap. 9.9.2)
- the time delay before switching: from 0 to 100 seconds (see
chap. 9.9.3).
9.9.1. Choosing the switching way of the
relay output
Two switching ways of the relay are available, window or hysteresis.
In window switching, the state of the relay output is changed
whenever one of the thresholds is detected (see Fig. 35 and Fig.
36).
State of the relay output
actived
deactivated
Low threshold High threshold
m/s
State of the relay output
actived
deactivated
Low threshold High threshold
m/s
Fig. 36: Change of state of the relay output in window switching
with a relay wired as NC
In hysteresis switching (see Fig. 37 and Fig. 38), the state of the
relay output is changed:
• when both the high threshold is detected and the fluid velocity
increases;
• when both the low threshold is detected and the fluid velocity
decreases;
State of the relay output
actived
deactivated
Low threshold High threshold
m/s
Fig. 37: Change of state of the relay output in hysteresis switching
with a relay wired as NO
Fig. 35: Change of state of the relay output in window switching
with a relay wired as NO
40
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Page 43
.....
.....
.....
Type 8041
Adjustment and commissioning
State of the relay output
actived
deactivated
Low threshold High threshold
m/s
Fig. 38: Change of state of the relay output in hysteresis switching
with a relay wired as NC
→ Select the way of switching of the relay (see Fig. 39 and Fig.
40).
Notation convention for the following diagram:
Red LED state
Green LED state
Device in Read mode?
NO
See general configuration diagram,
chap. 9.3
YES
→ 1 short press on push button.
1 2 3 4 5 6 7 8 9 10
Bargraph shows current way of switching (Hysteresis,
by default)
→ Press and hold the push button.
After 2 s, device is in Parameterizing mode:
Bargraph alternates between:
Hysteresis switching
1 2 3 4 5 6 7 8 9 10
Window switching
Step 1
Fig. 39: Choosing the relay switching way, part 1
English
41
Page 44
→ Release push button when bargraph shows
.....
.....
desired way of switching.
Type 8041
Adjustment and commissioning
To confirm the selection and go back
to Read mode
→ Briefly press push button.
Go back to Read mode
Fig. 40: Choosing the relay switching way, part 2
To choose the other way of switching To go back to Read mode without
confirming the selection
→ Press and hold the push button
until...
...bargraph goes back to step 1, Fig.
39
→ Wait for 10 s.
Go back to Read mode
9.9.2. Viewing and setting the low and high switching thresholds
The low switching threshold can be set in the range from 0 to the high switching threshold value.
The high switching threshold can be set in the range from the low switching threshold value to 100% of the full scale.
The low and high switching thresholds are set in 2 steps:
- setting the factors of ten;
- setting the units.
→ Viewing and/or setting the low and high switching thresholds (see Fig. 41, Fig. 42 and Fig. 43).
42
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Page 45
.....
.....
Type 8041
Adjustment and commissioning
Notation convention:
Red LED state
Green LED state
FS = Full scale
Bargraph shows current low switching threshold, 24%
in the example (by default = FS)
After 2 s, device is in Parameterizing mode:
To view low switching threshold
→ Press push button twice briefly
0 100 % FS
1 2 3 4 5 6 7 8 910
To set the factors of ten for the low
switching threshold
Device in Read mode?
YES
Bargraph shows current high switching threshold,
82% in the example (by default = FS)
→ Press and hold the push
button.
After 2 s, device is in Parameterizing mode:
NO
See general configuration diagram, chap. 9.3
To view high switching threshold
→ Press push button three times briefly
0
1 2 3 4 5 6 7 8 910
To set the factors of ten for the high
switching threshold
100 % FS
A
Fig. 41: Setting the relay switching thresholds, part 1
B
English
43
Page 46
Type 8041
Adjustment and commissioning
A
If low switching threshold set to 24%, LED no. 3
flashes 9 times then stays on;
1 flash = 1 % of the FS
Next LEDS come on one after the other until they
show the factor of ten for the current high switching
threshold;
1 LED ON = 10 % of the FS
→ Release the push button when desired number
of LEDs is on.
To set the units for the low switching threshold.
→ Briefly press push button
After 2 s, next LED flashes;
1 flash = 1 % of the FS
→ Release push button when LED has flashed the desired
number of times
B
If high switching threshold set to 82%, LED no. 9
flashes 9 times then stays on;
1 flash = 1 % of the FS
Next LEDS come on one after the other until they
show the factor of ten for the current low switching
threshold;
1 LED ON = 10 % of the FS
→ Release the push button when desired number of
LEDs is on.
To set the units for the high switching threshold.
→ Briefly press push button
After 2 s, next LED flashes;
1 flash = 1 % of the FS
C
Fig. 42: Setting the relay switching thresholds, part 2
44
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Page 47
.....
.....
Type 8041
Adjustment and commissioning
C
To confirm the selection and go
back to Read mode
→ Briefly press push button.
Go back to Read mode
Fig. 43: Setting the relay switching thresholds, part 3
To modify the value displayed To go back to Read mode
without confirming the value set.
→ Press and hold the push
button
→ Wait for 10 s.
→ Release the push button
when desired number of
LEDs is on
Go back to Read mode
9.9.3. Viewing and setting the time delay before switching
Switching occurs if one of the thresholds (low, high) is exceeded for a period longer than the set time delay. The time delay applies to both
switching thresholds.
The time delay before switching must be set to between 0 and 100 s. If the time delay is equal to 0, switching occurs immediately.
The time delay before switching is set in 2 steps:
- setting the factors of ten for the seconds;
- setting the seconds.
→ Viewing and/or setting the time delay before switching (see Fig. 44, Fig. 45 and Fig. 46).
English
45
Page 48
.....
.....
Type 8041
Adjustment and commissioning
Notation convention:
Device in Read mode?
To view time delay before switching
Red LED state
Green LED state
YES
NO
See general configuration diagram,
chap. 9.3
→ Press push button four times briefly
0 s
1 2 3 4 5 6 7 8 910
Bargraph shows current time delay before switching, 52 s in
the example (by default = 100 s)
To set the factors of ten for the seconds of the time delay
before switching
100 s
→ Press and hold the push button
After 2 s, device is in Parameterizing mode:
A
Fig. 44: Setting the time delay before relay switching, part 1
A
If time delay before switching set to 52 s, LED
no. 6 flashes 9 times then stays on
Next LEDs come on one after the other
→ Release the push button when desired
number of LEDs is on.
1 LED ON = 10 s
To set the seconds of the time delay before
switching
→ Press and hold the push button
After 2 s, next LED flashes
1 flash = 1 s
→ Release push button when LED has flashed
the desired number of times
B
Fig. 45: Setting the time delay before relay switching, part 2
C D
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Type 8041
Adjustment and commissioning
B
To go back to Read mode without
confirming the value set.
→ Briefly press push button.
To modify the seconds of the
time delay before switching.
→ Press and hold the push
button
→ Release push button when
LED has flashed the desired
number of times
Fig. 46: Setting the time delay before relay switching, part 3
C
To go back to Read mode without
confirming the value set.
D
→ Wait for 10 s.
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Type 8041
Maintenance and troubleshooting
10. MAINTENANCE AND
TROUBLESHOOTING
10.1. Safety instructions
danger
Risk of injury due to high pressure in the installation.
• Stop the circulation of fluid, cut off the pressure and drain the
pipe before loosening the process connections.
Risk of injury due to high fluid temperatures.
• Use safety gloves to handle the device.
• Stop the circulation of fluid and drain the pipe before loosening
the process connections.
Risk of injury due to the nature of the fluid.
• Respect the prevailing regulations on accident prevention and
safety relating to the use of aggressive fluids.
Risk of injury due to electrical voltage.
• Shut down the electrical power source of all the conductors and
isolate it before carrying out work on the system.
• Observe all applicable accident protection and safety regulations for electrical equipment.
Warning
Risk of injury due to non-conforming maintenance.
• Maintenance must only be carried out by qualified and skilled
staff with the appropriate tools.
• Guarantee a set or controlled restarting of the process subsequent to any intervention.
10.2. Cleaning the device
note
The device may be damaged by the cleaning product.
• Clean the device with a cloth dampened with water or a detergent compatible with the materials the device is made of.
• Do not use any abrasive acting materials.
10.3. Cleaning the electrodes
note
Dirt on the electrodes may cause measurement errors.
• Regularly clean the wetted parts.
• Rinse the electrodes after cleaning.
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Type 8041
Maintenance and troubleshooting
10.4. Replacing the seal on a device
with G2" nut
note
Do not scratch the seal groove.
1
2
3
Seal
Fig. 47: Dismounting the device and location of the seal
Groove
→ Loosen the nut of the device (mark 2).
→ Remove the device from the fitting (mark 1).
→ Remove the seal from the groove.
→ Clean the seal groove.
→ Insert the new O-ring in the groove (see chap. 11).
→ Insert the device into the fitting.
→ Tighten the nut (mark 2) by hand on the device.
10.5. If you encounter problems
danger
Risk of injury due to high pressure in the installation.
• Stop the circulation of fluid and cut off the pressure before
loosening the process connections.
Risk of injury due to electrical voltage.
• Shut down the electrical power source of all the conductors and
isolate it before carrying out work on the system.
• Observe all applicable accident protection and safety regulations for electrical equipment.
Risk of injury due to high fluid temperatures.
• Use safety gloves to handle the device.
• Stop the circulation of fluid and drain the pipe before loosening
the process connections.
Risk of injury due to the nature of the fluid.
• Respect the prevailing regulations on accident prevention and
safety relating to the use of aggressive fluids.
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Problem
The device
does not
respond
The device
does not
respond
The device
does not
respond
The device
does not
respond
Bargraph
state
OFF Flashes once
OFF Flashes twice
OFF Flashes 3 times
OFF Flashes 4 times
Red LED state
briefly every 2 s
briefly every 2 s
briefly every 2 s
briefly every 2 s
Green LED
state
Flashes once
every second
Flashes once
every second
Flashes once
every second
Flashes once
every second
Current or
frequency
output
state
22 mA and
256 Hz
22 mA and
0 Hz
22 mA and
0 Hz
22 mA and
0 Hz
Type 8041
Maintenance and troubleshooting
Meaning / Cause Recommended action
Measuring range
exceeded by more than
20%
The flow zero point calibration failed.
→ Clear the error by briefly pressing the
push-button.
→ Consult the graphs (see chap.
8.2.1).
→ Clear the error by briefly pressing the
push-button.
→ Check upstream/downstream dis-
tances (see chap. 8.2.1).
→ Restart the calibration (see chap.
9.7).
→ If the error persists, contact your
Bürkert retailer.
The device is out of
service
The full scale calibration
failed because the fluid
velocity < 2 m/s
→ Contact your Bürkert retailer.
→ Clear the error by briefly pressing the
push-button.
→ Check the fluid velocity.
→ Restart the calibration of the full
scale (see chap. 9.8).
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Type 8041
Maintenance and troubleshooting
Problem
The device
does not
respond
The sensor
does not
work
Incorrect flow
measurement.
Bargraph
state
OFF Flashes 5 times
OFF OFF OFF 0 mA
- OFF Flashes once
All the
LEDs are
ON
Red LED state
briefly every 2 s
OFF Flashes once
Current or
Green LED
state
Flashes once
every second
Flashes irregularly or is off
OFF 0 mA
every second
every second
frequency
output
state
22 mA and
0 Hz
and
0 Hz
- The power supply has
0 mA
and
0 Hz
and
0 Hz
- The K factor has not been
20 mA and
240 Hz
Meaning / Cause Recommended action
The calibration of the full
scale failed because the
fluid velocity > 10 m/s.
→ Clear the error by briefly pressing the
push-button.
→ Check the fluid velocity.
→ Restart the calibration of the full
scale (see chap. 9.8).
The device is not
connected.
The fuse of the installation
is in a bad condition
The switch of the installation is set to OFF
→ Connect the device.
→ Replace the fuse.
→ Position the installation switch to ON.
→ Check the wiring (see chap. 8.3.1,
been wrong connected to
the + and - terminals
The power supply is not
stable.
The device is out of
service
8.3.2, 8.3.3).
→ Replace the power supply.
→ Return the device to your Bürkert
retailer.
→ Recalculate the K factor (see chap.
correctly calculated.
Measuring range
exceeded by less than
20%.
6.7).
→ Select the higher measuring range
(see chap. 9.6)
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Problem
The flow rate
measurements are not
stable
The device
transmits no
current or no
frequency at
all.
The sensor
does not
measure a nil
flow rate.
Bargraph
state
Unstable OFF Flashes once
shows a
value
Lit OFF Flashes once
Red LED state
OFF Flashes once
Green LED
state
every second
every second
every second
Current or
frequency
output
state
> 4 mA
and
> 0 Hz
0 mA and/or
0 Hz
> 4 mA and
> 0 Hz
Type 8041
Maintenance and troubleshooting
Meaning / Cause Recommended action
The electrodes are dirty.
The electrodes are not in
contact with the fluid.
Air bubbles appear in the
fluid.
→ Clean the electrodes (see chap.
10.3).
→ Make sure the electrodes are always
in contact with the fluid
→ Respect the mounting recommenda-
tions (see chap. 8.2).
→ Select the "slow" filter (see chap.
9.5).
The flow sensor has not
been immersed for 24 h
before calibration of the
"flow zero" point.
The flow rate fluctuations
are very important.
Upstream-downstream
connection has not been
correctly done.
The position of the sink/
source selector is not
correct.
The outputs are not correctly wired.
The calibration of the flow
zero point has not been
correctly done.
→ Respect the calibration procedure
(see chap. 9.7).
→ Select the "slow" filter (see chap.
9.5).
→ Respect the mounting recommenda-
tions (see chap. 8.2).
→ Correctly position the sink/source
selector (see chap. 8.3.1).
→ Check the wiring of the outputs (see
chap. 8.3.1, 8.3.2, 8.3.3).
→ Calibrate again (see chap. 9.7).
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Type 8041
Spare parts and accessories
11. SPARE PARTS AND
ACCESSORIES
attention
Risk of injury and/or damage caused by the use of unsuitable
parts.
Incorrect accessories and unsuitable replacement parts may
cause injuries and damage the device and the surrounding area.
• Use only original accessories and original spare parts from
Bürkert.
Spare parts Order code
Set of:
- 2 M20x1.5 cable glands
- 2 neoprene flat seals for cable glands or a
screw plugs
- 2 M20x1.5 screw plugs
- 2 multiway seals 2x6 mm
Set of:
- 2 M20x1,5 / NPT 1/2" reductions
- 2 neoprene flat seals for cable glands
- 2 M20x1.5 screw plugs
449755
551782
Spare parts Order code
Set of:
- 1 stopper gasket for an M20x1.5 cable gland
- 1 multiway seal, 2x6 mm, for cable gland
- 1 green FKM seal for the flow sensor of a
8041 with G2'' nut
- 1 mounting instruction sheet
Snap ring 619205
PPA nut 440229
PC nut 619204
Set of:
- 1 green FKM seal
- 1 black EPDM seal
Relay connection kit with:
- Terminal block
- 1 protective cap
- 1 cable clip
- 1 mounting instruction sheet
EPDM seal with FDA agreement (for a 8041 with a
clamp connection)
FEP seal with FDA agreement (for a 8041 with a
clamp connection)
Clamp collar 731164
558102
552111
552812
730837
730839
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Type 8041
Storage
Spare parts Order code
Set of:
- 1 stopper gasket for an M20 x 1,5 cable gland
- 1 multi-way seal, 2 x 6 mm, for a cable gland
565384
12. PACKAGING, TRANSPORT
attention
Damage due to transport
Transport may damage an insufficiently protected device.
• Transport the device in shock-resistant packaging and away
from humidity and dirt.
• Do not expose the device to temperatures outside the admissible storage temperature range.
• Protect the electrical interfaces using protective plugs.
13. STORAGE
attention
Poor storage can damage the device.
• Store the device in a dry place away from dust.
• Storage temperature: -20...+60 °C.
• Humidity: < 80%, non condensated.
14. DISPOSAL OF THE DEVICE
Dispose of the device and its packaging in an environmentally-
→
friendly way.
attention
Damage to the environment caused by products contaminated by fluids.
• Keep to the existing provisions on the subject of waste disposal
and environmental protection.
Note:
Comply with the national and/or local regulations which
concern the area of waste disposal.
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Type 8041
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Type 8041
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www.burkert.com
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