Burkert 8756 User manual

Operating Instructions
Bedienungsanleitung
Manuel d‘utilisation
Type 8756
büS / CANopen, Analogue
Mass Flow Meter (MFM) for liquids
Massendurchflussmesser (MFM) für Flüssigkeiten
Débitmètre massique (MFM) pour liquides

We reserve the right to make technical changes without notice.
Technische Änderungen vorbehalten.
Sous réserve de modifications techniques.
© Bürkert SAS, 2020
Operating Instructions 2005/00_EU-ML_00573797 / Original EN

3
Table of contents
Type 8756
1 THE OPERATING INSTRUCTIONS ............................................. 5
1.1 Denitionofthetermproduct........................................ 5
1.2 DenitionofthetermbüS.............................................. 5
1.3 AboutNamurandtheNamurRecommendationNE1075
1.4 Symbolsused ................................................................ 5
2 INTENDED USE .................................................................... 6
3 BASIC SAFETY INFORMATION............................................ 7
4 GENERAL INFORMATION .................................................... 8
4.1 Contact .......................................................................... 8
4.2 Warranty ........................................................................ 8
4.3 InformationontheInternet ............................................ 8
5 DESCRIPTION....................................................................... 9
5.1 Productvariants............................................................. 9
5.2 Productstatus-indicator .............................................. 10
5.3 Memorycard ............................................................... 11
5.4 Bürkert-Communicatorsoftware ................................. 11
5.4.1 büS/CANopenvariant ..................................... 11
5.4.2 Analoguevariant............................................... 13
6 TECHNICAL DATA............................................................... 14
6.1 Conformity ................................................................... 14
6.2 Standards .................................................................... 14
6.3 Operatingconditions ................................................... 14
6.4 Mechanicaldata .......................................................... 14
6.5 Fluiddata..................................................................... 15
6.6 Pressureloss ............................................................... 16
6.7 Electricaldata .............................................................. 16
6.7.1 büS/CANopenvariant ..................................... 16
6.7.2 Analoguevariant............................................... 17
6.8 Markings ...................................................................... 17
6.8.1 Calibrationplate ............................................... 18
6.8.2 Typelabel ......................................................... 18
6.8.3 Additionalmarkings.......................................... 19
7 INSTALLATION .................................................................... 19
7.1 Safetyinstructions ....................................................... 19
7.2 Installationsteps.......................................................... 20
7.3 Additionaldocumentation ........................................... 20
7.4 Fluidinstallation........................................................... 20
7.4.1 G1/8''threadedconnections............................ 22
7.4.2 NPT1/8''threadedconnections ....................... 22
7.4.3 Connectionswithvacuumttings .................... 22
7.4.4 Connectionswithdouble-ferrulettings .......... 22
8 ELECTRICAL INSTALLATION ............................................. 23
8.1 Safetyinstructions ....................................................... 23
8.2 WiringthebüS/CANopenvariant................................ 23
8.2.1 WithbüSextensioncablesfromBürkert.......... 23
8.2.2 WithbüScablesfromBürkert .......................... 24
8.2.3 WithCANopencables ...................................... 25
8.3 WiringtheAnaloguevariant......................................... 26
8.3.1 Digitalinput ...................................................... 27
8.3.2 Relayoutput ..................................................... 27
8.4 Connectingthefunctionalearth .................................. 28
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Type 8756
9 START-UP............................................................................ 28
9.1 Safetyinstructions ....................................................... 28
9.2 Start-upsteps.............................................................. 29
10 OPERATION ........................................................................ 29
10.1Safetyinstructions ....................................................... 29
10.2OperationofthebüS/CANopenvariant...................... 30
10.2.1SettingCANopencommunicationor
büScommunication ......................................... 30
10.2.2Empty-pipedetection....................................... 30
10.2.3Bubbledetection .............................................. 30
10.2.4Increasingthedatatransmissionspeed........... 31
10.3OperationoftheAnaloguevariant............................... 31
10.3.1Cut-o .............................................................. 31
11 MAINTENANCE................................................................... 32
11.1Maintenanceforoperationwithheavilycontami-
nateduids .................................................................. 32
11.2Replacingthememorycard ........................................ 33
11.3Troubleshootingiftheproductstatus-indicator
showsaproblem ......................................................... 34
11.4Troubleshootingofotherproblems.............................. 36
12 ACCESSORIES /SPARE PARTS......................................... 37
12.1Electricalaccessories .................................................. 37
12.2Additionalsoftware ...................................................... 37
13 DECOMMISSIONING.......................................................... 38
13.1Safetyinstructions ....................................................... 38
13.2Dismantling.................................................................. 38
14 TRANSPORT....................................................................... 39
15 STORAGE, DISPOSAL ........................................................ 40
16 RETURNING THE PRODUCT ............................................. 40
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The Operating instructions
Type 8756
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.
PleasecarefullyreadtheOperatingInstructionsPayparticular
attentiontothechpt."Basicsafetyinformation"and"Intended
use".
▶ReadtheOperatingInstructions.Ifyoudonotunderstandthe
contentoftheOperatingInstructions,contactBürkert.
1.1 
Theterm"product"asusedintheOperatingInstructions,refers
tooneorseveralofthefollowingproducts:
•aType8756büS/CANopenMassFlowMeter(MFM)
•aType8756-AnalogueMassFlowMeter(MFM)
1.2 
Theterm"büS"usedintheseOperatingInstructionsreferstothe
Bürkertsystembus,thatisbasedontheCANopenprotocol.
FormoreinformationonbüS,readthecablingguideavailablein
EnglishandGermanatwww.buerkert.comsearchfor"Guidefor
planningbüSnetworks".
FormoreinformationonCANopenwhichisrelatedtothe
product,refertotheOperatingInstructions"CANopenNetwork
conguration"atwww.buerkert.com.
1.3 

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.
1.4 
DANGER
The symbol warns of an immediate danger.
▶Failuretoobservethewarningresultsinfatalorseriousinjuries.
WARNING
The symbol warns of a potentially dangerous situation.
▶Failuretoobservethewarningmayresultinseriousorfatal
injuries.
CAUTION
The symbol warns of a possible danger.
▶Failuretoobservethewarningmayresultinmoderateorminor
injuries.
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Intended use
Type 8756
NOTICE
The symbol warns of damage to property.
▶Failuretoobservethewarningmayresultindamagetothe
productorsystem.
Indicatesimportantadditionalinformation,tipsand
recommendations.
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.
Type 8756 MFM is used exclusively to measure the mass ow
rate of liquids.
▶Observethedatainthecontractdocuments,intheOper-
atingInstructions,ontheTypelabelandonthecalibration
plate:
-additionaldata
-operatingconditions
-serviceconditions
▶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prod-
uctmanufacturerrecommends.
▶Onlyusetheproductwithcomponentsthattheproduct
manufacturer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control.
▶Onlyusetheproductforitsintendedpurpose.
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Basic safety information
Type 8756
3 BASIC SAFETY INFORMATION
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.Makesurethatnobodycanswitchthepower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.
Youcanbeinjuredthroughcontactwiththeoperatinguid,its
reactionproducts,andvapours.
Youcanbeinjuredthroughinhalationofvapours.
▶Observeallapplicableaccidentprotectionandallapplicable
safetyregulationsrelatingtotheoperatinguidused.
Various dangerous situations.
Toavoidpersonalinjury:
▶Onlyoperatetheproductwithaltereduid.
▶MakesuretheMFMoperating-pressureisnothigherthan
theoperatingpressurevalueontheproductdata-sheet.
Findthedatasheetonourhomepage:
www.burkert.com
▶Onlyusetheproductforuidsthatarecompatiblewiththe
productmaterials.
▶Onlyuseagentsthatarestablewiththeproductmaterialsfor
cleaninganddecontamination.
Findthecompatibilitychartonourhomepage:
www.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.
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General information
Type 8756
Various dangerous situations.
Toavoidpersonalinjury:
▶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 / 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energized.
•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.
4 GENERAL INFORMATION
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:
Germany
BürkertFluidControlSystems
SalesCenter
Christian-Bürkert-Str.13-17
D-74653Ingelngen
Germany
Tel.+49(0)7940-1091111
Fax+49(0)7940-1091448
Email:[email protected]
Theaddressesofourinternationalsalesocesareavailableon
theinternetat:www.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:www.burkert.com
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Description
Type 8756
5 DESCRIPTION
5.1 
3
10
11
4
2
6
9
8
7
13
5
12
1
1. Electricalconnection,Analoguevariantonly:5-pinM12
femaleconnector,Acoding
2. Electricalconnection:5-pinM12maleconnector,Acoding
3. Possibleuidconnections:
•G-threadedconnectionsaccordingtoDINISO228/1
•NPT-threadedconnectionsaccordingtoASME/
ANSIB1.20.1
•malevacuum-ttingconnections
•malecompression-ttingconnections
4. M4screwforfunctionalearthconnection
5. Baseblock
6. Productstatus-indicator.Theindicatoroperatesaccording
toNamurNE107.
7. StatusindicatoroftheconnectiontotheEthernetport1
8. Statusindicatoroftheeldbuscommunication
9. StatusindicatoroftheconnectiontotheEthernetport2
10.M3screw
11. Cover
12. büS-interfaceforBürkert-Communicatorsoftware
13. Slotforthememorycard
Fig. 1: Mass Flow Meter variants
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10
Description
Type 8756
5.2 
Theproducthasanindicatortodisplaytheproductstatus.Ifmorethanoneproductstatusexistsimultaneously,thentheproductstatus
withthehighestpriorityisdisplayed.
Tab. 1: Description of the product status-indicator
Indicator
according to
NE107
Colour code
for a PLC
Description Meaning
Red 5Failure,errororfault Duetoamalfunctionoftheproductoritsperiphery,themeasuredvaluesarenotvalid.
Orange 4Functioncheck Workisdoneontheproduct.
Theoutputsignalistemporarilyinvalid.
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.
Theproductcontinuestomeasure.
Green 1Diagnosticactive Noeventhasbeengenerated.Statuschangesareshownincolour.
Messagesarelistedandpossiblytransmittedthroughanyconnectedeldbus.
White 0 Diagnosticinactive Theproductisswitchedon.
Statuschangesarenotshown.
Messagesarenotlistednortransmittedthroughanyconnectedeldbus.
Whentheindicatorisblinking,aconnectionbetweentheproductandtheBürkert-Communicatorsoftwareisestablished.
→Tosolveaproblemindicatedbytheproductstatus-indicator,refertochpt11.3Troubleshootingiftheproductstatus-indicator
showsaproblem.
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11
Description
Type 8756
5.3 
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.
Atproductstart-up,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www.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trans-
ferredfromadefectiveproducttoanewproduct.
5.4 
TheMassFlowCommunicatorisanotherPCsoftwarethat
isnotcompatiblewiththeproduct.Youcannotusethe
PCsoftwareMassFlowCommunicatortocongureor
operatetheproduct.
TheType8920Bürkert-CommunicatorisaPC-softwareand
enablesthefollowingactions,forexample:
•Settingtheparametersoftheproduct,forexamplethebasic
settingsfortheproductstart-up
•Runningthediagnostics,andreadtheerrormemoriesfor
example
•Updatingtheproductsoftware
•Adjustingtheuser-denedcalibrationcurve
TousetheType8920Bürkert-Communicatorsoftware,referto
thechapterthatisrelatedtotheproductvariant:
•büS/CANopenvariant,refertochpt.5.4.1.
•Analoguevariant,refertochpt.5.4.2.
5.4.1 
TodothesettingswiththeType8920Bürkert-Communicator
software,dothefollowingsteps:
→BuytheUSB-büS-interfacesetwitharticlenumber00772426
fromBürkert.SeeFig.2.
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12
Description
Type 8756
büSstickwithtermina-
tion-resistanceswitch
Fig. 2: USB-büS-interface set with article number 00772426
→DownloadthelatestversionoftheType8920Bürkert-Com-
municatorsoftwarefromwww.burkert.com
→Duringinstallation,thebüSstickmustnotbeinsertedatthe
PC.InstalltheBürkert-CommunicatorsoftwareonaPC.
ObeytheinstallationrecommendationsgivenintheUSB-
büS-interfaceset.
Fig.3showstheelectricalconnectionpartsthatareusedfrom
theUSB-büS-interfaceset.
→Insertthemicro-USBconnectorintothebüSstick.
→InserttheappropriatepoweradapterintotheAC/DCadapter.
→Connectthejackmale-connectoroftheAC/DC-adapter
cabletothejackfemale-connectoroftheM12female-con-
nectorcable.
→ConnecttheM12femaleconnectortothebüSnetwork.
micro-USB
connector
jackmale-connector
jack
female-connector AC/DCadapter
5-pinM12female
connector
Fig. 3: Electrical connection parts of the USB-büS-interface set with
article number 00772426
→IftheproductisconnectedtooneortheotherendofbüS,
thensetthetermination-resistanceswitchofthebüSstick
toON.Elsesetthetermination-resistanceswitchofthebüS
sticktoOFF.
→InsertthebüSstickintoaUSBportofthePC.
→WaituntiltheWindowspilotofthebüSstickhasbeencom-
pletelyinstalledonthePC.
→ConnecttheAC/DCadaptertothepowersupply.
→StarttheBürkert-Communicatorsoftware.
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13
Description
Type 8756
→Clickon intheBürkert-Communicatorsoftwareto
establishthecommunicationbetweentheBürkert-Communi-
catorsoftwareandtheproduct.Awindowopens.
→SelectbüS-Stick.
→ChoosetheportBürkert büS Stick,clickonFinishandwait
untiltheproductsymbolappearsinthelistofdevices.
→Inthelistofdevices,clickonthesymbolrelatedtothe
product:themenustructurefortheproductisdisplayed.
5.4.2 
→BuytheUSB-büS-interfacesetwitharticlenumber00772551
fromBürkert.
→DownloadthelatestversionoftheType8920Bürkert-Com-
municatorsoftwarefromwww.burkert.com
→InstalltheBürkert-CommunicatorsoftwareonaPC.During
installation,thebüSstickmustnotbeinsertedatthePC.
→AssemblethepartsoftheUSB-büS-interfaceset.Referto
Fig.4.
Fig. 4: Assembled parts of the USB-büS-interface set with article
number 00772551
→Setthetermination-resistanceswitchofthebüSsticktoON.
→InsertthebüSstickintoaUSBportofthePC.
→Energizetheproduct.Refertochpt.8Electricalinstallation.
→Insertthemicro-USBconnectorintothebüS-interfaceforthe
BürkertCommunicatorsoftware.ThelocationofthebüS-in-
terfaceisgiveninchpt.5.1onpage9.
→WaituntiltheWindowspilotofthebüSstickhasbeencom-
pletelyinstalledonthePC.
→StarttheBürkert-Communicatorsoftware.
→Clickon intheBürkert-Communicatorsoftwareto
establishthecommunicationbetweentheBürkert-Communi-
catorsoftwareandtheproduct.Awindowopens.
→SelectbüS-Stick.
→ChoosetheportBürkert büS Stick,clickonFinishandwait
untiltheproductsymbolappearsinthelistofdevices.
→Inthelistofdevices,clickonthesymbolrelatedtothe
product:themenustructurefortheproductisdisplayed.
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14
Technical data
Type 8756
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 caused by pressure, uid escape.
▶Donotexceedthemaximumoperatingpressure.Thevalue
oftheoperatingpressureisgivenintheproductdatasheet.
WARNING
Risk of injury from malfunction that is due to outdoor use.
▶Donotusetheproductinoutdoorareas.
Tab. 2: Operating conditions of the product
Ambienttemperature 0°C...+50°C
Fluidtemperature
•MFM •–10°C...+60°C,onlyinliquidstate
Ambienthumidity <95%,non-condensing
IP-Codeaccordingto
EN60529
Thecablesmustbeconnectedandthe
matingconnectorsmustbepluggedin
andtightened.
•MFM •IP651),IP671)
Operatingpressure
•MFM •Max.8bar
1) The IP-Code is determined by Bürkert. The IP-Code is not evaluated
according to UL61010.
6.4 
Dimensions,weight:seedatasheetoftheproduct
Tab. 3: Materials of the product
Productpart Material
Base-block Stainlesssteel316L
Housing Paintedaluminium,stainlesssteel
Sealing RefertotheTypelabel
Product
status-indicator Polycarbonate
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15
Technical data
Type 8756
6.5 
Tab. 4: Fluid data
Calibrationconditions
•Calibrationuid •Water
•Temperatureofthecali-
brationuid
•25°C
•Calibrationpressure •4bar
Massflowratemeasurement
•Massowraterange •0.1...25kg/h
•Measurementaccuracy
after1minutewarm-up
time
•±0.2%ofthemeasuredvalue
PLUS±0.0014kg/h
0.0014kg/h=zero-point
stability
•Measurementrange,refertoFig.5.Themeasurementrange
isdenedastheratioofQnominaloftheproducttoQmin.
Qmin=0.1kg/h.AtQminthemeasurementaccuracyis1.6%
ofthemeasuredvalue.
- Qnominal = 10 kg/h - 100:1
- Qnominal = 25 kg/h - 250:1
•Repeataccuracy •±0.1%ofthemeasuredvalue
PLUS±0.0007kg/h
0.0007kg/h=zero-point
stability
Densitymeasurement
•Densityrange •0...5kg/l
•Measurementaccuracy
formassowratevalues
higherthan1.5kg/h
•±0.02kg/l
•Repeataccuracyformass
owratevalueshigherthan
1.5kg/h
•±0.005kg/l
Temperaturemeasurement
•Temperaturerange •–10...70°C
•Measurementaccuracy
formassowratevalues
higherthan1.5kg/h
•±1.0°C
•Repeataccuracyformass
owratevalueshigherthan
1.5kg/h
•±0.5°C
MFM:Responsetime <300ms
Operatinguid Liquids
Qualityoftheoperatinguid
•Liquids •Clean
•Maximumparticlesize •10μm
•Minimumdynamic
viscosity
•200mPa.s
•Maximumdynamic
viscosity
•0.3mPa.s
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16
Technical data
Type 8756
02.5 5 7.5 10 12.5 15 22.517.5 20
25
[kg/h]
100
50
150
200
250
NominalowrateQ
Measurementrange
Fig. 5: Measurement range depending on nominal ow rate
6.6 
AMassFlowMeter(MFM)hasapressurelossthatdependsonthe
followingparameters:
•theowratevalue
•theproductuid-connectionsize
•theproductuid-connectiontype
•theproductbase-block
•theoperatinguid
ThepressurelossinanMFMcanbereadfromthediagramin
Fig.6.
[kg/h]
∆p [bar]
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0510 15 20
25
1/8''
Fig. 6: Pressure loss diagram, MFM, for water, in the measurement
range 0...25kg/h
6.7 
6.7.1 
WARNING
▶ForUL-certiedcomponents,onlyuselimitedpowercircuits
of"NECClass2".
Tab. 5: Electrical data of an MFM
Operatingvoltage 24VDC±10%
Maximumpower
consumption
4W
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17
Technical data
Type 8756
Communication
interface
büSandCANopen.Thecommunication
typecanbechosenwiththeBürk-
ert-Communicatorsoftware.
6.7.2 
WARNING
▶ForUL-certiedcomponents,onlyuselimitedpowercircuits
of"NECClass2".
Tab. 6: Electrical data of an MFM
Operatingvoltage 24VDC±10%
Maximumpowerconsumption 4W
Digitalinput
•0...0,2V •toactivatelevel1
•1...4Voropen •toactivatelevel2
•5...28V •toactivatelevel3
Analogueoutputforthemeasuredvalue
•0/4...20mA •Maximumloopimpedance:
600W
•Resolution:20µA
•0...5/10V •Maximumcurrent:20mA
Resolution:10mV
Relayoutput •Change-overrelaywith1
normallyclosedcontact
(breakcontact)and1nor-
mallyopencontact(make
contact).Bothcontactsare
freeofpotential
•Maximumratings:1A,30V,
30VA
6.8 
WARNING
Risk of injury that is due to escape of the uid.
Youcanbeinjuredthroughcontactwiththeoperatinguid,its
reactionproducts,andvapours.
Youcanbeinjuredthroughinhalationofvapours.
▶Observeallapplicableaccidentprotectionandallapplicable
safetyregulationsrelatingtotheoperatinguidused.
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18
Technical data
Type 8756
6.8.1 
3
2
1
4
Mass Flow Meter
Flow Direction
Id: 00******
QC passed: __ . __ . ____
1. Productvariant
2. Flowdirection.Theowdirectiondependsontheproduct
variant.
3. Productarticle-number
4. Calibrationdate
Fig. 7: Description of the calibration plate
6.8.2 
8756 24V ... 4W [4W]
IP65/IP67 NEC Class 2 only
25.0 kg/h H2O
büS/CANopen
Ta= –10°C...+60°C
S/N 1000 W41ME PS=100barg VAAg
00******
12 3
8910
11
12
13
14
15
4
5
6
7
1. Typeoftheproduct
2. Supplyvoltage,directcurrent
3. ConsumptionaccordingtoUL61010-1[typical
consumption1)]
1)Conditions:ambienttemperature23°C,nominalowrate100%
4. ForUL-certiedproducts,onlyuselimitedpowercircuits
of"NECClass2".
5. Warningsymbol:observetheOperatingInstructions
deliveredwiththeproduct.
6. Calibrationuid
7. Sealingmaterial
8. Burstpressure
9. Manufacturingcode
10.Productarticle-number
11. Productserialnumber
12. Ambienttemperature
13. büS/CANopenvariant:communicationinterface
Analoguevariant:inputandoutput
14. Nominalmassowrate(Qnominal)
15. IP-Code
Fig. 8: Description of the Type label (example)
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19
Installation
Type 8756
6.8.3 
D-74653 Ingelfingen
Made in Germany
Conformitymarking
Fig. 9: CE marking
7 INSTALLATION
7.1 
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.Makesurethatnobodycanswitchthepoweron.
▶Observeallapplicableaccidentprotectionandallapplicable
safetyregulationsforelectricalequipment.
Risk of injury that is due to escape of the uid.
Youcanbeinjuredthroughcontactwiththeoperatinguid,its
reactionproducts,andvapours.
Youcanbeinjuredthroughinhalationofvapours.
▶Observeallapplicableaccidentprotectionandallapplicable
safetyregulationsrelatingtotheoperatinguidused.
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20
Installation
Type 8756
WARNING
Risk of injury that is due to improper installation.
▶Onlytrainedpersonnelcancarryouttheinstallation.Person-
nelmustusesuitabletools.
▶Securetheinstallationagainstunintentionalactuation.
▶Ensureacontrolledrestartafterinstallation.
7.2 
1. Dotheuidinstallationintothepipe.Refertochpt.7.4.
2. Dotheelectricalinstallation.Refertochpt.8.
3. Start-uptheproduct.Refertochpt.9Start-up.
7.3 
•FormoreinformationonbüS,readthecablingguidethatis
availableinEnglishandGermanatwww.buerkert.comsearch
for"GuideforplanningbüSnetworks".
•FormoreinformationonCANopenthatisrelatedtothe
product,refertotheOperatingInstructions"CANopenNetwork
conguration"atwww.buerkert.com.
•Productdescriptionleandobjectdescriptionfortherelated
productType(downloadfromwww.burkert.com).
•Product-specichelpintheBürkert-Communicatorsoftware.
•büS-driverforLabVIEWonrequest.
7.4 
Fortheconnectiontothepipe,theproductisequippedwithone
ofthefollowingprocessconnections:
•G1/8''threadedconnectionsaccordingtoDINISO228/1
•NPT1/8''threadedconnectionsaccordingtoASME/
ANSIB1.20.1
•connectionswith1/4''vaccum-ttingsor1/8''vaccum-ttings
•connectionswith1/4''double-ferrulettingsor1/8''dou-
ble-ferrulettings
•connectionswith6-mmdouble-ferrulettingsor4-mmdou-
ble-ferrulettings
DANGER
Risk of injury that is due to pressure in the installation and in
the product.
▶Beforeworkingontheinstallationorproduct,cutthepres-
sure.Ventanddrainthepipes.
English