Burkert 8746 Operating instructions

8746
Burkert
Brand
Burkert
Model
8746
Type
Operating instructions
Operating Instructions
Bedienungsanleitung
Manuel d‘utilisation
Type 8746
Profibus
Analogue
Mass Flow Meter (MFM) / Mass Flow Controller (MFC)
Massendurchflussmesser (MFM) / Massendurchflussregler (MFC)
Débitmètre massique (MFM) / Régulateur de débit massique (MFC)
We reserve the right to make technical changes without notice.
Technische Änderungen vorbehalten.
Sous réserve de modifications techniques.
© Bürkert SAS, 2020 - 2021
Operating Instructions 2103/01_EU-ML_00573732 / Original EN
3
Table of contents
Type 8746 Profibus, 8746 Analogue
1 THE OPERATING INSTRUCTIONS ............................................. 6
1.1 Denitionofthetermproduct ........................................ 6
1.2 AboutNAMURandtheNAMURRecommen-
dationNE107 ................................................................ 6
1.3 Symbolsused ................................................................ 6
2 INTENDED USE .................................................................... 7
2.1 ProductvariantwithATEXcertication ......................... 8
3 BASIC SAFETY INFORMATION ............................................ 8
4 GENERAL INFORMATION .................................................. 10
4.1 Contact ........................................................................ 10
4.2 Warranty ...................................................................... 10
4.3 InformationontheInternet .......................................... 10
5 DESCRIPTION ..................................................................... 11
5.1 Productvariants ........................................................... 11
5.1.1 MassFlowMeter(MFM) ................................ 11
5.1.2 MassFlowController(MFC)with
proportionalvalve .......................................... 12
5.1.3 MassFlowController(MFC)withmotorvalve 13
5.2 Productstatusindicator .............................................. 13
5.3 MotorvalvestatusLED ............................................... 15
5.4 StatusLEDfortheeldbuscommunication ..................... 15
5.5 Memorycard ............................................................... 16
5.6 büS-interface ............................................................... 16
5.7 ControlvalveofanMFC .............................................. 16
6 TECHNICAL DATA ............................................................... 17
6.1 Conformity ................................................................... 17
6.2 Standards .................................................................... 17
6.3 Operatingconditions ................................................... 17
6.3.1 MassFlowMeter ............................................ 17
6.3.2 MassFlowControllerwithproportionalvalve 18
6.3.3 MassFlowControllerwithType3280
motorvalve .................................................... 18
6.3.4 MassFlowControllerwithType3285
motorvalve .................................................... 19
6.4 Markings ...................................................................... 19
6.4.1 Calibrationplate ............................................. 19
6.4.2 Typelabel ....................................................... 20
6.4.3 Conformitymarking,certicationmarking ..... 20
6.5 Productmaterials ......................................................... 21
6.6 Dimensions,weight ..................................................... 21
6.7 Fluiddata ..................................................................... 21
6.7.1 MassFlowMeter ............................................ 21
6.7.2 MassFlowControllerwithproportionalvalve 22
6.7.3 MassFlowControllerwithmotorvalve .......... 22
6.7.4 Qualityoftheoperatinguid .......................... 23
6.7.5 Pressureloss(MFM) ....................................... 23
6.7.6 Operatinggasisair ........................................ 23
6.7.7 Operatinggasisnotair .................................. 25
6.8 Electricaldata ...................................................................... 26
6.8.1 ProductvariantAnalogue ............................... 26
6.8.2 ProductvariantProbus ..................................... 27
6.9 Communicationinterface(productvariantProbus) ... 27
English
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Type 8746 Profibus, 8746 Analogue
7 FLUID INSTALLATION ......................................................... 27
7.1 Safetyinstructions ....................................................... 27
7.2 Installationsteps .......................................................... 28
7.3 ProductvariantwithG-internal-threadeduid
connections ................................................................. 28
7.4 ProductvariantwithNPT-internal-threadedcon-
nections ....................................................................... 31
7.5 Productvariantwithangeconnections ..................... 32
8 ELECTRICAL INSTALLATION ............................................. 32
8.1 Safetyinstructions ....................................................... 32
8.2 Additionaldocumentation ........................................... 33
8.2.1 ProductvariantAnalogue ............................... 33
8.2.2 ProductvariantProbus................................ 33
8.3 WiringtheproductvariantAnalogue ........................... 33
8.3.1 Digitalinput .................................................... 35
8.3.2 Relayoutput ................................................... 36
8.4 WiringtheproductvariantProbus ............................ 37
8.5 Connectingthefunctionalearth .................................. 38
9 COMMISSIONING ............................................................... 39
9.1 Safetyinstructions ....................................................... 39
9.2 Commissioningsteps .................................................. 39
10 SETTING AND OPERATION ............................................... 40
10.1Safetyinstructions ....................................................... 40
10.2Functions ..................................................................... 40
10.2.1 Zero-pointshut-o(MFC) .............................. 40
10.2.2 Flushmode(MFCProbus) ........................... 41
10.3Toolsfordoingsettings ............................................... 41
10.4ConnecttheproducttotheBürkertCommuni-
catorsoftware .............................................................. 41
10.5User-denedadjustment ............................................. 42
10.6OperatingmodesofanMFC ....................................... 42
10.7Normaloperatingmode(MFC) .................................... 43
10.7.1 ProductvariantProbus................................ 43
10.7.2 ProductvariantAnalogue ............................... 43
10.8Optimisetheclosed-loopcontrolparameters(MFC) ........ 44
10.9Choosethesourcegivingtheset-pointvalue(MFC) .. 45
10.10Set-pointvalueswithoutcommunication(MFC
Probus) ...................................................................... 45
11 MAINTENANCE ................................................................... 46
11.1Maintenanceforoperationwithheavilycontami-
nateduids .................................................................. 46
11.1.1 Inspectandcleanthestainlesssteel
mesh-lter ...................................................... 47
11.2Cleaningandrecalibrationatthefactory ..................... 48
11.3Replacethememorycard ........................................... 48
12 TROUBLESHOOTING ......................................................... 49
12.1Problemsshownbytheproductstatusindicator ........ 49
12.1.1 Productstatusindicatorisred(MFM
Analogue) ....................................................... 49
12.1.2 Productstatusindicatorisred(MFM
Probus) ......................................................... 50
12.1.3 Productstatusindicatorisred(MFC
Analogue) ....................................................... 50
English
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Type 8746 Profibus, 8746 Analogue
12.1.4 Productstatusindicatorisred(MFC
Probus) ......................................................... 50
12.1.5 Productstatusindicatorisorange(MFM) ...... 50
12.1.6 Productstatusindicatorisorange(MFC) ...... 51
12.1.7 Productstatusindicatorisyellow(MFM) ....... 51
12.1.8 Productstatusindicatorisyellow(MFC) ....... 51
12.1.9 Productstatusindicatorisblue ..................... 51
12.2ProblemsshownbythestatusLEDofthemotor
valve ............................................................................. 52
12.2.1 LEDisredandashes,LEDisredandON ... 52
12.2.2 LEDisyellowandashes .............................. 52
12.3Miscellaneousproblems .............................................. 52
12.3.1 Productstatusindicatoriso ....................... 52
12.3.2 Productstatusindicatorashes .................... 52
12.3.3 Productstatusindicatorgoesout
periodically ..................................................... 52
12.3.4 Replacementproductadoptsnone
ofthevaluesfromthedefectiveproduct ....... 53
12.3.5 Replacementproductdoesnot
adoptallofthevaluesfromthe
defectiveproduct ........................................... 53
12.3.6 Nomassowrate(MFM) ............................... 53
12.3.7 Nomassowrate(MFC) ................................ 53
12.3.8 Unstablemeasuredvalue(MFM) ................... 53
12.3.9 Unstablemeasuredvalue(MFC) .................... 54
12.3.10 Set-pointvalueat0%,butoperating
uidstillows(MFC) ...................................... 54
12.3.11 Set-pointvalueat0%,control
valveisclosed,nomassow,buta
non-zeromassowrateismeasured(MFC) . 54
12.3.12 Set-pointvalueisnotreached(MFC) ............ 54
13 ACCESSORIES, SPARE PARTS ......................................... 55
13.1Electricalaccessories .................................................. 55
13.2Compressionttingsforaproductvariantwith
internal-threadeduidconnections ............................. 55
13.3Meshlters .................................................................. 56
13.4Additionalsoftware ...................................................... 56
14 DECOMMISSIONING .......................................................... 56
14.1Safetyinstructions ....................................................... 56
14.2Dismantlingtheproduct .............................................. 57
15 TRANSPORT ....................................................................... 57
16 STORAGE, DISPOSAL ........................................................ 58
17 RETURNING THE PRODUCT ............................................. 58
English
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The Operating instructions
Type 8746 Profibus, 8746 Analogue
1 THE OPERATING INSTRUCTIONS
The Operating Instructions describe the entire life cycle of the
product.PleasekeeptheOperatingInstructionsinasafeplace,
accessibletoallusersandanynewowners.
Important safety information.
▶ReadtheOperatingInstructions.Ifyoudonotunderstandthe
contentoftheOperatingInstructions,thencontactBürkert.
▶Payparticularattentiontothechpt.Basicsafetyinformation
andtothechpt.Intendeduse.
1.1 
Theterm"product"asusedintheOperatingInstructions,refers
tooneorseveralofthefollowingdevices:
•MassFlowMeter(MFM)Type8746Probus
•MassFlowMeter(MFM)Type8746Analogue
•MassFlowController(MFC)Type8746Probus
•MassFlowController(MFC)Type8746Analogue
1.2 

Standardscommitteeformeasurementandcontroltechnology
(NAMUR)isaninternationalassociationofusersofautomation
systemsfortheprocessindustry.
NAMURrecommendation(NE)107:self-monitoringanddiag-
nosisofelddevices.
1.3 
DANGER
Warns of an immediate danger.
▶Failuretoobservethewarningresultsindeathorinserious
injuries.
WARNING
Warnsofapotentiallydangeroussituation.
▶Failuretoobservethewarningcanresultinseriousinjuriesor
indeath.
CAUTION
Warns of a possible danger.
▶Failuretoobservethewarningcanresultinmoderateorminor
injuries.
NOTICE
Warns of damage to property.
▶Failuretoobservethewarningmayresultindamagetothe
productorsystem.
The symbol indicatesimportantadditionalinformation,
tipsandrecommendations.
English
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Intended use
Type 8746 Profibus, 8746 Analogue
ThesymbolreferstoinformationintheOperating
Instructions,orinotherdocuments.
▶Designatesaninstructionforriskprevention.
→Designatesaworkstepthatyoumustcarryout.
Indicatesaresult.
MenuDesignatesatextofauserinterface.
2 INTENDED USE
Improper use of the product may be a hazard to people, nearby
equipment and the environment.
MFM Type 8746 Probus or MFM Type 8746 Analogue is
used exclusively to measure the mass ow rate of clean and
dry gases.
MFC Type 8746 Probus or MFC Type 8746 Analogue is used
exclusively to regulate the mass ow rate of clean and dry
gases.
▶Observethedatainthecontractdocuments,intheOperating
Instructions,ontheTypelabelandonthecalibrationplate:
-additionaldata
-operatingconditions
-serviceconditions
▶OnlyusetheproductfortheuidsindicatedontheType
labelandinthecalibrationprotocol.
▶Onlyusetheproductindoors.
▶Onlyusetheproductuptoanaltitudeof2000m.
▶Onlyusetheproductwithexternalinstrumentsthattheproduct
manufacturerrecommends.
▶Onlyusetheproductwithcomponentsthattheproductman-
ufacturerrecommends.
▶Operatetheproductcarefullyandensureregularandprofes-
sionalmaintenance.
▶Operatetheproductonlyinperfectworkingorder.Ensure
appropriatestorage,transport,installationanduse.
▶Onlyusetheproductforitsintendedpurpose.
English
8
Basic safety information
Type 8746 Profibus, 8746 Analogue
2.1 

DANGER
Risk of explosion that is due to improper use of the product
in potentially explosive areas.
▶ObservethespecicationsoftheATEX-conformity
certicate.
▶ObservethespecicationsintheATEXsupplementforType
8746.Thesupplementisavailableatcountry.burkert.com.
The ATEX certication is only valid if the product is used as
describedintheATEXsupplement.
Ifunauthorizedchangesaremadetotheproduct,thentheATEX
certicationbecomesinvalid.
3 
Thissafetyinformationdoesnottakeintoaccountanycontin-
genciesoroccurrencesthatmayariseduringinstallation,use
andmaintenanceoftheproduct.
Theoperatingcompanyisresponsiblefortherespectofthelocal
safetyregulationsincludingforthepersonnelsafety.
Risk of injury that is due to pressure in the installation or in
the product.
▶Beforeworkingontheinstallationorproduct,cutthepres-
sure.Ventanddrainthepipes.
Risk of injury from electric shocks.
▶Beforeworkingontheinstallationorproduct,switchothe
powersupply.Makesurethatnobodycanswitchthepower
supplyon.
▶Observeallapplicableaccidentprotectionandallapplicable
safetyregulationsforelectricalequipment.
Burn hazard and re hazard that are due to hot surface of the
product.
▶Donottouchthehotsurfacewithbarehands.
▶Wearsafetyglovestotouchtheproduct.
▶Keeptheproductawayfromanyhighlyammablematerials
oruids.
Risk of injury that is due to escape of the uid.
▶Observeallapplicableaccidentprotectionandallapplicable
safetyregulationsrelatingtotheoperatinguidused.
English
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Basic safety information
Type 8746 Profibus, 8746 Analogue
Various dangerous situations.
Toavoidpersonalinjury,obeythefollowinginstructions:
▶Donotoperatetheproductwithoutitsmeshlter.
▶Onlyoperatetheproductintheinstallationpositionthatis
givenonthecalibrationplate.
▶MakesurethattheoperatingpressureoftheMFMisnot
higherthanthemaximumcalibrationpressurethatisgiven
onthecalibrationplate.
▶MakesurethattheoperatingpressureoftheMFCisnot
higherthanthetightsealingpressureofthecontrolvalve.
▶Onlyusetheproductfortheuidspeciedastheoperating
uidinthecalibrationprotocol.
▶Onlyuseagentsthatarestablewiththeproductmaterialsfor
cleaninganddecontamination
Findthecompatibilitychartonourhomepage:
country.burkert.com
Intheeventofanyambiguitypleasecontactyourlocalsales
oce.
▶Do not make any modications to the product and do not
subjecttheproducttomechanicalstress.
▶Protecttheinstallationandtheproductfromaccidental
actuation.
▶Onlytrainedpersonnelmayperformtheinstallationworkand
themaintenancework.
▶Afteraninterruptionintheelectricalsupplyorintheuid
supply,ensureacontrolledrestartoftheprocess.
▶Observebestindustrypractice.
NOTICE
Components or assemblies at risk from electrostatic
charges.
Theproductcontainselectroniccomponentswhicharesuscep-
tibletoelectrostaticdischarge(ESD).Contactwithelectrostati-
callychargedpersonsorobjectsendangersthesecomponents.
Intheworstcase,theywillbecomedefectiveimmediatelyorwill
failwhenenergised.
•Tominimiseorevenavoidanydamagecausedbyanelec-
trostaticdischarge,takealltheprecautionsdescribedinthe
EN61340-5-1.
•Donottouchanyoftheliveelectricalcomponents.
English
10
General information
Type 8746 Profibus, 8746 Analogue
4 
4.1 
Thenameofthemanufacturerisdisplayedasinsetwritingonthe
coverandthehousingoftheproduct.
Tocontactthemanufactureroftheproduct,usethefollowing
address:
BürkertSAS
RueduGiessen
F-67220TRIEMBACH-AUVAL
Theaddressesofourinternationalsalesocesareavailableon
theinternetat:country.burkert.com
4.2 
Thewarrantyisconditionaloncompliantuseoftheproductin
observanceoftheoperatingconditionsspeciedintheOper-
atingInstructions.
4.3 
OperatingInstructionsanddatasheetsfortheproductcanbefound
onlineat:country.burkert.com
English
11
Description
Type 8746 Profibus, 8746 Analogue
5 DESCRIPTION
5.1 
5.1.1 
3
12
11
4
2
7
10
9
8
6
13
5
1
15
14
1. Electricalconnection:
-ProductvariantProbus:5-pinM12femaleconnector,B
coding
-ProductvariantAnalogue:5-pinM12femaleconnector,A
coding
2. Electricalconnection:5-pinM12maleconnector,Acoding
3. Possibleuidconnections:
-G-internal-threadedconnectionsaccordingto
DINISO228/1
-NPT-internal-threadedconnectionsaccordingtoASME/
ANSIB1.20.1
-angeconnection
4. M4screwforfunctionalearthconnection
5. Baseblock
6. Flowdirection
7. Productstatusindicator.Theindicatoroperatesaccording
toNAMURNE107.
8. Notused
9. StatusLEDfortheeldbuscommunication
10.Notused
11. Cover
12. M3screw
13. büSinterfacefortheBürkertCommunicatorsoftware
14. Slotforthememorycard
15. Impactprotection-cover.Theimpactprotection-coveris
onlydeliveredwithanATEXproductvariant.
Fig. 1: Product variants of a Mass Flow Meter
English
12
Description
Type 8746 Profibus, 8746 Analogue
5.1.2 

3
13
12
4
2
8
11
10
9
6
14
5
1
16
15
7
1. Electricalconnection:
-ProductvariantProbus:5-pinM12femaleconnector,B
coding
-ProductvariantAnalogue:5-pinM12femaleconnector,A
coding
2. Electricalconnection:5-pinM12maleconnector,Acoding
3. Possibleuidconnections:
-G-internal-threadedconnectionsaccordingto
DINISO228/1
-NPT-internal-threadedconnectionsaccordingtoASME/
ANSIB1.20.1
-angeconnection
4. M4screwforfunctionalearthconnection
5. Baseblock
6. Flowdirection
7. Proportionalvalve.Theproportionalvalvecanbebuilt
insidetheproduct.
8. Productstatusindicator.Theindicatoroperatesaccording
toNAMURNE107.
9. Notused
10.StatusLEDfortheeldbuscommunication
11. Notused
12. Cover
13. M3screw
14. büSinterfacefortheBürkertCommunicatorsoftware
15. Slotforthememorycard
16. Impactprotection-cover.Theimpactprotection-coveris
onlydeliveredwithanATEXproductvariant.
Fig. 2: Product variants of a Mass Flow Controller
English
13
Description
Type 8746 Profibus, 8746 Analogue
5.1.3 

3
14 13
4
2
9
12
11
10
15
1
16
7
5 6
8
1. Electricalconnection:
-ProductvariantProbus:5-pinM12femaleconnector,B
coding
-ProductvariantAnalogue:5-pinM12femaleconnector,A
coding
2. Electricalconnection:5-pinM12maleconnector,Acoding
3. Possibleuidconnections:
-G-internal-threadedconnectionsaccordingto
DINISO228/1
-NPT-internal-threadedconnectionsaccordingtoASME/
ANSIB1.20.1
-angeconnection
4. M4screwforfunctionalearthconnection
5. Baseblock
6. Flowdirection
7. Motorvalve.
8. StatusLEDforthemotorvalve.
9. Productstatusindicator.Theindicatoroperatesaccording
toNAMURNE107.
10.Notused
11. StatusLEDfortheeldbuscommunication
12. Notused
13. Cover
14. M3screw
15. büSinterfacefortheBürkertCommunicatorsoftware
16. Slotforthememorycard
Fig. 3: Product variants of a Mass Flow Controller
5.2 
Theproductstatusindicatorchangesitscolourbasedonthe
NAMURrecommendationNE107.Thecolouroftheproduct
statusindicatorgivesthefollowingpiecesofinformation:
English
14
Description
Type 8746 Profibus, 8746 Analogue
•Whetherproductdiagnosticsareactiveornot.Diagnosticsareactiveontheproductandcannotbedeactivated.
•Ifproductdiagnosticsareactive,thentheproductstatusindicatorshowswhetherdiagnosticseventshavebeengeneratedornot.
Ifseveraldiagnosticseventshavebeengenerated,thentheproductstatusindicatorshowsthediagnosticseventwiththehighest
priority.RefertoTab.1.
Iftheproductstatusindicatorashes,thentheproductisselectedinaman-machineinterfacesuchastheBürkertCommunicator
software.
Tab. 1: Product status indicator in accordance with NAMUR NE107, edition 2006-06-12, for active diagnostics
Colour
according to
NE107
Colour code
(for a PLC)
Diagnostics event
according to NE107
Meaning for the product
Red 5Failure,errororfault MFM:Duetoamalfunctionoftheproductoritsperiphery,themeasuredvaluesarenotvalid.
MFC:Duetoamalfunctionoftheproductoritsperiphery,themeasuredvaluesarenotvalid
andtheproductcannotregulateanymore.
Orange 4Checkfunction Theproductisbeingworkedon.
•MFM:Theoutputsignalistemporarilyinvalid.
•MFC:Theproductcannotregulatetemporarily.
Yellow 3Outofspecication Theambientconditionsorprocessconditionsfortheproductareoutsidethespecied
ranges.
Productinternaldiagnosticspointtoproblemsintheproductorwiththeprocessproperties.
Blue 2Maintenancerequired →Dotherequiredmaintenanceoperation.
MFM:Theproductcontinuestomeasure.
MFC:Theproductcontinuestoregulate,butafunctionistemporarilyrestricted.
Green 1 - Diagnosticsareactiveandnodiagnosticseventhasbeengenerated.
TheMFCproductvariantoperatesinthenormaloperatingmodeorinStored set-point
valueoperatingmode.Refertochpt.10.7Normaloperatingmode(MFC)andchpt.10.9
Choosethesourcegivingtheset-pointvalue(MFC).
→Tosolveaproblemthatisindicatedbytheproductstatusindicator,refertochpt.12.1Problemsshownbytheproductstatus
indicator.
English
15
Description
Type 8746 Profibus, 8746 Analogue
5.3 
ThecolourandstatusofthemotorvalvestatusLEDgivethefol-
lowingpiecesofinformation:
•Whetherthemotorvalvefacesaproblemornot.
•Whetherthemotorvalveiscompletelyopenorclosed.
Tab. 2: Status of the motor valve depending on the colour of the status
LED
Colour of
the LED
Status of the LED Status of the motor valve
-LEDout Motorvalveisnotenergised
white LEDlit Motorvalveoperatesnormally
yellow LEDlit Motorvalveiscompletelyopen
LEDashing.The
colouralternates
withthecolour
thatindicatesthe
positionofthe
motorvalve.
Theambientconditionsorthe
processconditionsforthemotor
valveareoutsidethespecied
ranges.
green LEDlit Motorvalveisclosed
red LEDashing.The
colouralternates
withthecolour
thatindicatesthe
positionofthe
motorvalve.
Error
5.4 

AproductvariantProbushasanLEDtoshowthestatusofthe
connectiontothenetwork.
StatusLEDfortheeldbus
communication
Fig. 4: Location of the status LED for the eldbus communication
Tab. 3: Description of the status LED for the eldbus communication
Colour of the
LED Meaning
green Cyclicdataisbeingexchangedbetweenthe
productandtheeldbusmaster
red Nocyclicdataisbeingexchangedbetweenthe
productandtheeldbusmaster
English
16
Description
Type 8746 Profibus, 8746 Analogue
5.5 
NOTICE
Ifthememorycardisdefectiveorlost,thenbuyanewmemory
cardfromyourBürkertsalesoce.
Theproductisdeliveredwith a memory cardthat is inserted in
theproduct.
Whentheproductisenergised,therearetwopossibilities:
•Ifproduct-specicdataisstoredontheinsertedmemorycard,
theproductadoptsthedata.Atproductdelivery,thememory
cardcontainsproduct-specicdata.Togetalistofthestored
data,refertotheHelpfortheInitiationlethatcanbedown-
loadedfromcountry.burkert.com.
•Iftheinsertedmemorycardisempty,theproductloadsits
owndataonthememorycard.Anewmemorycardisempty.
Thedataonthememorycardcanbetransferredtoanother
productwiththesamearticlenumber.Forexample,thedatacan
betransferredfromadefectiveproducttoanewproduct.
5.6 
ThebüS-interfaceisusedforshort-termservicingoftheproduct
withtheBürkertCommunicatorsoftware.
→ToconnecttheproducttotheBürkertCommunicator
software,refertochpt.10.4.
5.7 
TheMFCisequippedwithoneofthefollowingcontrolvalvetypes:
•Adirect-actingandnormally-closedproportionalvalve.
•Amotor-drivenvalvethatiscalledmotorvalve.Ifde-energised,
themotorvalveremainsinitslatestposition.
Thecontrolvalveprovidesthesealingfunctionwhenthefol-
lowingconditionsaremet:
•Theproductisusedwithinthespeciedpressurerange.
•Theproductisequippedwithavalveseatsealthatismadeof
asoftmaterialsuchasFKMorEPDM.
NOTICE
If the valve seat seal is made of a hard material such as
PCTFE, then the control valve may not be tight.
Productswithanominalvalvediameterof0.05mmor0.1mm
haveavalveseatsealmadeofahardmaterial.
English
17
Technical data
Type 8746 Profibus, 8746 Analogue
6 TECHNICAL DATA
6.1 
TheproductcomplieswiththeEUdirectivesaccordingtotheEU
declarationofconformity(ifapplicable).
6.2 
Theappliedstandards,whichverifyconformitywiththeEUdirec-
tives,canbefoundontheEUtypeexaminationcerticateand/or
theEUdeclarationofconformity(ifapplicable).
6.3 
WARNING
Risk of injury from malfunction that is due to outdoor use.
▶Donotusetheproductinoutdoorareas.
WARNING
Risk of injury caused by pressure, uid escape.
Importantproduct-specicdataisindicatedontheTypelabel
andthecalibrationplate.
▶Onlyusetheproductforthespeciedoperatinguid.
▶Donotexceedthespeciedcalibrationpressure.
→ForthespecialoperatingconditionsofproductswithATEX
certication,refertotheATEXsupplementfortheproduct.
6.3.1 
Tab. 4: Operating conditions of an MFM
Ambienttemperature –10°C...+50°C
Fluidtemperature •–10°C...+70°C
•–10°C...+60°Cforoxygen
Ambienthumidity <95%,non-condensing
Protectionclass
accordingto
EN60529
1) The IP-Code is
determined by Bürkert.
The IP-Code is not
evaluated by UL.
IP651)
Ifthefollowingconditionsaremet:
•Cablesmustbeconnected.
•Matingconnectorsmustbeplugged
inandtightened.
Operatingpressure Max.22bar
English
18
Technical data
Type 8746 Profibus, 8746 Analogue
6.3.2 

Tab. 5: Operating conditions of an MFC with proportional valve
Ambienttemperature –10°C...+50°C
Fluidtemperature •–10°C...+70°C
•–10°C...+60°Cforoxygen
Ambienthumidity <95%,non-condensing
Protectionclass
accordingto
EN60529
2) The IP-Code is
determined by Bürkert.
The IP-Code is not
evaluated by UL.
IP652)
Ifthefollowingconditionsaremet:
•Cablesmustbeconnected.
•Matingconnectorsmustbeplugged
inandtightened.
Operatingpressure Max.10bar
Dependsonthenominaldiameterof
theproportionalvalve
6.3.3 

Tab. 6: Operating conditions of an MFC with Type 3280 motor valve
Ambienttemperature •–10°C...+50°C
•UL-certiedproductvariant:
–10°C...+40°C
Fluidtemperature •0°C...+70°C
•0°C...+60°Cforoxygen
Ambienthumidity <95%,non-condensing
Protectionclass
accordingto
EN60529
3) The IP-Code is
determined by Bürkert.
The IP-Code is not
evaluated by UL.
IP543)
Ifthefollowingconditionsaremet:
•Cablesmustbeconnected.
•Matingconnectorsmustbeplugged
inandtightened.
Operatingpressure Max.22bar
Dependsonthenominaldiameterof
themotorvalve
English
19
Technical data
Type 8746 Profibus, 8746 Analogue
6.3.4 

Tab. 7: Operating conditions of an MFC with Type 3285 motor valve
Ambienttemperature •–10°C...+50°C
•UL-certiedproductvariant:
–10°C...+40°C
Fluidtemperature •0°C...+70°C
•0°C...+60°Cforoxygen
Ambienthumidity <95%,non-condensing
Protectionclass
accordingto
EN60529
4) The IP-Code is
determined by Bürkert.
The IP-Code is not
evaluated by UL.
•IP504)
Ifthefollowingconditionsaremet:
•Cablesmustbeconnected.
•Matingconnectorsmustbeplugged
inandtightened.
Operatingpressure Max.22bar
Dependsonthenominaldiameterof
themotorvalve
6.4 
WARNING
Risk of injury caused by pressure, uid escape.
Importantproduct-specicdataisindicatedontheTypelabel
andonthecalibrationplate.
▶Onlyusetheproductforthespeciedoperatinguid.
▶Donotexceedthespeciedcalibrationpressure.
6.4.1 
5
4
3
2
1
6
Mass Flow Controller
Medium 1 Medium 2
P1: 1,00 barg P1: 1,00 barg
Mounting: horizontal upright
Id: 00******
QC passed: __ . __ . ____
1. Productvariant
2. Calibrationuid
3. Calibrationpressure
4. Installationposition
5. Productarticlenumber
6. Calibrationdate
Fig. 5: Description of the calibration plate
English
20
Technical data
Type 8746 Profibus, 8746 Analogue
6.4.2 Type label
874x 24V ... 9W [5,5W]
IP65/IP67 NEC Class 2 only
5,0 Nl/min Air
10,0 Nl/min Air
PROFIBUS DPV1 max.12Mbit/s
GR:1 KL:A Ta=-10°C..+50°C
S/N 1000 W41ME PS=100barg EPDM
00******
12 3
4
5
6
7
810
11
9
12
13
14
15
16
1. Typeoftheproduct
2. Supplyvoltage,directcurrent
3. ConsumptionaccordingtoUL61010-1[proportionalvalve:
typicalconsumption1);motorvalve:powerconsumption1)
toholdthepositionofthemotorvalve]
1)Conditions:ambienttemperature23°C,nominalowrate
100%,regulationfor30minutes
4. Warningsymbol:ObservetheOperatingInstructionsdeli-
veredwiththeproduct.
5. Ambienttemperature
6. Sealingmaterial
7. Burstpressure
8. Manufacturingcode
9. ClassofthecontrolvalveaccordingtotheDVGW(Deut-
scherVereindesGas-undWasserfaches)
10.Productarticlenumber
11. Serialnumber
12. Categoryoftheproduct
13. ProductvariantProbus:communicationinterface
ProductvariantAnalogue:inputandoutput
14. Nominalowrate(Qnominal),unitsandoperatinggas2
15. Nominalowrate(Qnominal),unitsandoperatinggas1
16. IP-Code
Fig. 6: Description of the Type label (example)
6.4.3 

Rue du Giessen
F-67220 Triembach
Made in France
Conformitymarking
Certication
WARNING-Hot
surface
Fig. 7: CE marking and UL-certication
English
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Burkert 8746 Operating instructions

8746
Burkert
Brand
Burkert
Model
8746
Type
Operating instructions
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