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Level limit switchSeries CN 8000Technical Information / Instruction manual
Table of contents
Page
Safety Notes / Technical support 2----------------------------------------------------------------------------------------------------- Introducion Applications / Function / Features 3 ProfibusSystemImplementation 4-----------------------------------------------------------------------------------------------------Technical data Dimensions 5 Electrical data 9 Mechanical data 10 Operating conditions 11 Approvals 15-----------------------------------------------------------------------------------------------------Mounting 16-----------------------------------------------------------------------------------------------------Electrical installation 20-----------------------------------------------------------------------------------------------------Operation-Electronicmodule:Standard 24-----------------------------------------------------------------------------------------------------Operation-Electronicmodule:Digital 30-----------------------------------------------------------------------------------------------------Notes for use in Hazardous Locations 31-----------------------------------------------------------------------------------------------------ProbeModifications Shorteningthecable(cableversion) 35
Subjecttotechnicalchange. Weassumenoliabilityfortypingerrors.
Alldimensionsinmm(inch). Differentvariationsthanspecifiedarepossible.Pleasecontactourtechnicalconsultants.
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Level limit switchSeries CN 8000Technical Information / Instruction manual
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Safety notes / Technical support
Notes
• Installation,maintenanceandcommissioningmaybeaccomplishedonlybyqualifiedtechnicalpersonnel.• Theproductmustbeusedonlyinthemanneroutlinedinthisinstructionmanual.• Thisproductisintendedforuseinindustrialareas.Operationofthisequipmentinaresidentialareamaycause interferencetoseveralfrequencybasedcommunications.
Specialattentionmustbepaidtowarningsandnotesasfollows:
WARNING
Relatestoacautionsymbolontheproduct:Afailuretoobservethenecessaryprecautionscanresultindeath,seriousinjuryand/orconsiderablematerialdamage.
WARNING
Relatestoacautionsymbolontheproduct:Riskofelectricshock
WARNING
Afailuretoobservethenecessaryprecautionscanresultindeath,seriousinjuryand/orconsiderablematerialdamage.
Thissymbolisused,whenthereisnocorrespondingcautionsymbolontheproduct.
CAUTION Afailuretoobservethenecessaryprecautionscanresultinconsiderablematerialdamage.
Safetysymbols
Inmanualandonproduct
Description
CAUTION:refertoaccompanyingdocuments(manual)fordetails.
Earth(ground)Terminal
ProtectiveConductorTerminal
Technical support
Pleasecontactyourlocalsupplier(foraddressseewww.uwt.de).Otherwiseyoucancontact:
UWTGmbH Tel.:0049(0)83157123-0Westendstr.5 Fax:0049(0)83176879D-87488Betzigau info@uwt.de www.uwt.de
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Level limit switchSeries CN 8000Technical Information / Instruction manual
Introduction
Applications
CN8000isdesignedforleveldetectionandsimplepumpcontrolinavarietyofapplications: •Liquids,solids(powderandgranules),slurries,interfacedetection(forexample,oil/water),andfoamdetection •Foodsandpharmaceuticals •Chemicalandpetrochemical •Highpressureandtemperature
Function CN8000isaversatilecapacitanceswitch,idealforleveldetectionofinterfaces,solids,liquids,slurries,andfoam,andforsimplepumpcontrol.
Theswitchrespondstothepresenceofanymaterialwitharelativedielectricconstantof1.5ormorebydetectingachangeincapacitance,whichisregisteredasachangeinoscillatingfrequency.
Theswitchcanbesettodetectbeforecontactoroncontactwiththeprobe.ThedesignoftheCN8000allowstheinstrumenttooperateindependentlyofthetankwallorpipe,soitdoesnotrequireanexternalreferenceelectrodeforleveldetectioninanonconductivevesselsuchasconcreteorplastic.
Thepowersupplyisgalvanicallyisolated.
Thematerialsusedintheprobeconstructionprovideahighlevelofchemicalresistance,andanexcellenttemperatureratingontheprocesswettedportionoftheprobe:upto125°C(257°F).
CN8000isavailableintwomodels:thestandardmodel,andthedigitalmodelwithintegrallocaldisplay.
Features
•Pottedconstructionprotectscomponentsfromshock,vibration,humidity,and/orcondensation •Highchemicalresistanceonprobes •Leveldetectionindependentoftankwall/pipe •Freelyprogrammablesetupcoverswiderangeofapplications/materials •IntegratedLocalUserInterface(LUI)foreaseofuse •Rigidandcableversionsavailable •CommunicationviaPROFIBUSPA(profileversion3.0,ClassB) •IntrinsicallySafe(IS)transmitterdesignforhazardousareas(requiresexternalbarrierorISpowersupply)
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Introduction
CN8000supportsPROFIBUScommunicationprotocol,andSIMATICPDMsoftware.
Basic PLC configuration with PROFIBUS PA
Programming
CN8000carriesoutitslevelmeasurementfunctionaccordingtothesetofbuilt-inparameters.Youcanmakeparameterchangeslocallyviathelocaluserinterface,orfromaremotelocationviaaPCusingSIMATICPDMsoftware.
CN8000Digitalcanbeusedeither:
•asastandaloneunit,programmedlocallyusingtheLocalUserInterface,or •installedaspartofanetwork,programmedremotelyusingSIMATICPDMonProfibusPAnetwork(orlocally usingtheLocalUserInterface).
Alarm signalling
Thesolid-stateswitchcanbesettoreacteithertoadiagnosedfaultintheinstrument,ortoachangeintheprocesslevel. Fault Signalling
CN8000canactivelyreportinformationonitsownstatusviaPROFIBUSPAwhenusedaspartofanetwork,orbymeansofapre-definedoutputstatusatthesolidstateswitchandontheLocalUserInterface(LUI).
active PLC
PROFIBUSDP
PC/ laptop
DP/ PA coupler
PROFIBUSPA
CN8000(PROFIBUSPA)
CN8000 (PROFIBUSPA)
CN8000 (PROFIBUSPA)
ProfibusPA-SystemImplementation
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Level limit switchSeries CN 8000Technical Information / Instruction manual
Technical data - Dimensions
Enclosure
Temperaturextendedshaft
Temperaturextendedshaft
Threaded process connection
Flanged process connection
M20x1.5cablegland NPT 1/2" conduit Top view
Triclamp process connection
Temperaturextendedshaft
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Technical data - Dimensions
Threaded process connection
Detail "A"
L does not include any raisedface(seepage7)
Short extension lenghtShortest length
Cable version
Threaded process connection
Flanged process connection
Pipe versionExtended
Pipe versionExtended,withSlidingcoupling (pos.19)
Flanged process connection
Threaded process connection
probe(sensor)
probe(sensor)
Flanged process connection
pip
e
cableFEPinsulated
slid
ing
coup
ling
probe(sensor)
probe(sensor)
probe(sensor)
probe(sensor)
Triclampprocessconnection
Triclampprocessconnection
pip
e
pip
ep
ipe
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A
L=120mm(1.7")
L=98m
m(3.8")
84mm(3.3")
84mm(3.3")
84mm(3.3")
L L L
22mm
(0,87")
min.215mm(8.46")
ø20mm(0.79")
ø20mm(0.79")
ø6mm(0.3")
LL
A
L
L=98m
m(3.8")
ø20mm(0.79")
ø24mm(0.95")
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Level limit switchSeries CN 8000Technical Information / Instruction manual
Technical data - Dimensions
Flanges
Type Facing thickness
ASME150lbASME300lb
2mm(0.08")
ASME600lb 7mm(0.28")
Raised facefa
cing
thickness
Remote version(pos.12a,b)
Remoteversionexemplifiedwithpipe version, threaded process connection
Mounting bracket1.4404(316L)
Remotecable:ø6mm(0.24")FEP isolationBothsideswired
Probe(sensor)
Code Type Number of holes
d2mm(inch)
Lkmm(inch)
Dmm(inch)
Tthicknessmm(inch)
ASMEB
16.5,raisedface
5A 1"150lbs 4 15.9(0.63) 79.3(3.12) 108.0(4.25) 14.3(0.56)
5B 1"300lbs 4 19.1(0.75) 88.9(3.5) 123.8(4.87) 17.5(0.69)
5C 1"600lbs 4 19.1(0.75) 88.9(3.5) 123.8(4.87) 17.5(0.69)
5D 11/2”150lbs 4 15.9(0.63) 98.6(3.88) 127.0(5.0) 17.5(0.69)
5E 11/2"300lbs 4 22.2(0.87) 114.3(4.5) 155.6(6.13) 20.6(0.81)
5F 11/2"600lbs 4 22.2(0.87) 114.3(4.5) 155.6(6.13) 22.4(0.88)
5G 2"150lbs 4 19.1(0.75) 120.7(4.75) 152.4(6.01) 19.1(0.75)
5H 2"300lbs 8 19.1(0.75) 127.0(5.0) 165.1(6.5) 22.2(0.87)
5J 2"600lbs 8 19.1(0.75) 127.0(5.0) 165.1(6.5) 25.4(1.0)
5K 3"150lbs 4 19.1(0.75) 152.4(6.01) 190.5(7.5) 23.9(0.94)
5L 3"300lbs 8 22.2(0.87) 168.2(6.62) 209.6(8.25) 28.6(1.13)
5M 3"600lbs 8 22.2(0.87) 168.2(6.62) 209.6(8.25) 31.7(1.25)
5N 4"150lbs 8 19.1(0.75) 190.5(7.5) 228.6(9.0) 23.9(0.94)
5P 4"300lbs 8 22.2(0.87) 200.0(7.87) 254.0(10.0) 31.7(1.25)
5Q 4"600lbs 8 25.4(1.0) 215.9(8.5) 273.1(10.75) 38.1(1.5)
EN1092-1typeA,flatfaced
6A DN25PN16 4 14.0(0.55) 85.0(3.35) 115.0(4.53) 18.0(0.71)
6B DN25PN40 4 14.0(0.55) 85.0(3.35) 115.0(4.53) 18.0(0.71)
6C DN40PN16 4 18.0(0.71) 110.0(4.33) 150.0(5.91) 18.0(0.71)
6D DN40PN40 4 18.0(0.71) 110.0(4.33) 150.0(5.91) 18.0(0.71)
6E DN50PN16 4 18.0(0.71) 125.0(4.92) 165.0(6.5) 18.0(0.71)
6F DN50PN40 4 18.0(0.71) 125.0(4.92) 165.0(6.5) 20.0(0.79)
6G DN80PN16 8 18.0(0.71) 160.0(6.3) 200.0(7.87) 20.0(0.79)
6H DN80PN40 8 18.0(0.71) 160.0(6.3) 200.0(7.87) 24.0(0.94)
6J DN100 PN16 8 18.0(0.71) 180.0(7.09) 220.0(8.66) 20.0(0.79)
6K DN100PN40 8 22.0(0.87) 190.0(7.48) 235.0(9.25) 24.0(0.94)
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Technical data - Electrical data
Performance
Repeatability Approx.±2mmforaconductivefluid
Power Supply 12to250VAC/DC(0to60Hz)
Exapprovals Max.voltagewhichdoesnotinvalidatetheintrinsicallysafeprotectionofthesensor(probe):Um=250VAC
Powerconsumption 2Wmax.
PerformanceRepeatability ±1%ofmeasurement
User InterfaceConfiguration Locally,usingdipswitchesandpotentiometers
Local display 3 LED indicators
Output Relaycontactandsolid-stateswitch
Polarity-independent Yes
Failsafe Relayandsolid-stateswitchcanbede-energizedintheabsenceofasensorsignal
Alarm Outputs Relay 1FormC(SPDT)contact(selectableNCorNOcontact)
max.switchingvoltage/current(DC):30VDC/5Amax.switchingvoltage/current(AC):250VAC/8A(resistiveload)
Solid-stateswitch Rated30VDCorpeak30VAC,82mA
Timedelay ON/OFFalarm,selectable1to60secondsduration
Hysteresis DependentonDK:max.2mm(0.08”)@DK=1.5
Failsafe operation FailsafeHighorFailsafeLow
Delaytimers 2:AlarmONtoOFFandAlarmOFFtoON
Electronicmodule:Standard(RelaySPDT/SolidState)
Electronicmodule:Digital (ProfibusPA/SolidState)
Power
Busvoltage - General purpose - Intrinsically Safe
12to30VDC,12.5mA 12to24VDC,12.5mA,FISCOFieldDeviceIntrinsicallysafebarrierrequiredforATEX:Ui=24VIi=380mAPi=5.32WCi=5nFLi = 10uHforFM/CSA:seepage23
Exapprovals(Flameproof,Dustignitionproof)
Max.voltagewhichdoesnotinvalidatetheintrinsicallysafeprotectionofthesensor(probe):Um=250VAC
Starting current < current of normaloperation
Yes
Fault current 0mA(max.uninterruptedcurrentminuscurrentofnormaloperation)
Faultdisconnectequipment(FDE) Yes
Auxiliarysource Buspowered
Separate supply necessary No
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Technical data - Electrical data
User Interface
Configuration Locally,usinglocaluserinterface(LUI),forstandaloneoperation,orRemotely,usingSIMATICPDMonaProfibusPAnetwork
Local Digital Display LCD
Output (bus) PROFIBUSPA(IEC61158CPF3CP3/2)Busphysicallayer:IEC61158-2MBP(-IS)
Polarity-independent yes
Simultaneouscommunicationwith Master Class 2
4(max.)
Cyclic User data (normal operation) Byteoutput 2bytesrepresentingonevalue
Byteinput 0
Deviceprofile PROFIBUSPAProfileforProcessControlDevicesVersion3.0,ClassB
Functionblocks 1
Discrete input 1
Logical inversion Parameterizable
Simulation functions Output
yes
Input yes
Failsafe Parameterizable(lastusablevalue,substitutevalue,erroneousvalue)
Block Structure Physicalblock 1
Transducerblock 1
Transducerblockdiscreteinput Yes
Monitoringmeasuringlimits Yes
Signal Output Solid-stateswitch Galvanically isolated, non-polarity sensitive transistor
Rated30VDCorpeakACmax.,82mAmaxVoltagedropbelow1Vtypical@50mA WithIntrinsicallysafe:barrierrequiredforATEX:Ui=30VIi=200mAPi=350mWCi=0 L i = 0forFM/CSA:seepage23
Timedelay Controlledbysoftware 2delaytimers:alarmONdelayandalarmOFFdelay)
Hysteresis 100%adjustable
Failsafe operation FailsafeHighorFailsafeLow
Terminal Removableterminalblock,2.5mm2max.
Diagnostics Input Reedcontact:fortestfunction
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Probe
Weight Weightvariesbasedonconfiguration.Forexample:
•compact,100mm(4”)insertionlength, ¾” process connection
1kg(2.20lb.)approx.
Technical data - Mechanical data
Model Length(max)
ProcessConnections
Extension Tensile(max)
Wetted Parts
Pipe 5,500mm/216.5”
•Threaded:¾”1"11/2"BSPT(R),BSPP(G) ¾” 1" 1 ¼” 1 1/2" NPT
•Weldedflange:ASME1”11/2”2”3”4”DN25405080100
•Triclamp:1"11/2"2"21/2"3"ISO2852
1.4404(316L) n/a •1.4404(316L) optional PFA coating•FKMsealsoptionalFFKM•PPSprobeoptionalPVDF
Cable 30,000mm/1,181.1”
•Threaded:¾”1"11/2"BSPT(R),BSPP(G) ¾” 1" 1 ¼” 1 1/2" NPT
•Weldedflange:ASME:1”11/2”2”3”4”DN25405080100
FEP(FluorinatedEthylenePolymer)
180kg/400lbs
•1.4404(316L)•FEPjacketedcable•FKMsealsoptionalFFKM•PPSprobeoptionalPVDF
Enclosure
Termination Removableterminalblock,2.5mm2max.
Construction Powder-coatedaluminumwithgasket
Optionalthermalisolator 1.4404(316L)stainlesssteel
Cableentry 2xM20thread,option:2x1/2”NPTthreadwithadaptor
Ingress protection Type4/NEMA4/IP65standard,IP68optional Note:Theuseofapprovedwatertightconduithubs/glandsisrequiredforType4/NEMA4,Type6/NEMA6,IP68(outdoorapplications).
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Technical data - Operating conditions
Process
Relative dielectric constant 1.5minimum
Temperatureatprocessconnection Withouttemperatureextendedshaft: –40to85°C(–40to185°F)-20to85°C(-4to+185°F)withoptionFFKMsealO-ringWithtemperatureextendedshaft:–40to125°C(–40to257°F)-20to125°C(-4to+257°F)withoptionFFKMsealO-ring
Pressure(vessel): - pipe version -cableversion/triclampversion - sliding coupling version
–1to25barg/–14.6to365psig(nominal) –1to10barg/–14.6to150psig(nominal) –1to10barg/–14.6to150psig(nominal)
Note:pleaseseePressureversusTemperatureCurvesonnextpages.
Environmental Location Indoor/outdoor
Altitude 2.000m(6.562ft.)max.
Ambienttemperature –40to85°C(–40to185°F)
WithATEXapproval:–40to80°C(–40to176°F) withFlameprooforDustIgnitionProof or Type of protection n–40to60°C(–40to140°F) withIntrinsicallysafeThemax.resutlingtemperatureclosetotheenclosure(seedottetline)resultingfromthetemperatureincreasefromprocesssidemustbelimitedbyinstallationto:80°C(176°F)withFlameprooforDustIgnitionProoforTypeofprotectionn60°C(140°F)withIntrinsicallysafe
LUI(localuserinterface) –30to85°C(–22to185°F)
Storagetemperature –40to85°C(–40to185°F)
Relativehumidity Suitableforoutdoor(Type4/NEMA4/IP68)
Installation category II(Electronicmodule:Standard)I(Electronicmodule:Digital)
Pollution degree 4
process side
temperatureextendedshaft
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Technical data - Operating conditions
PressureversusTemperatureCurves
Shortestlengthandextendedpipe,threaded
P=permittedoperatingpressure T=permittedoperatingtemperature
atmosheric
Shortestlengthandextendedpipe,ASMEweldedflange
P=permittedoperatingpressure T=permittedoperatingtemperature
atmosheric
1)Thecurvesdenotetheminimumallowableflangeclassfortheshadedareabelow.
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Technical data - Operating conditions
1)Thecurvesdenotetheminimumallowableflangeclassfortheshadedareabelow.
Shortestlengthandextendedpipe,ENweldedflange
P=permittedoperatingpressure T=permittedoperatingtemperature
atmosheric
Triclamp
P=permittedoperatingpressure T=permittedoperatingtemperature
atmosheric
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Cable,ASMEweldedflange
P=permittedoperatingpressure T=permittedoperatingtemperature
atmosheric
Cable,ENweldedflange
P=permittedoperatingpressure T=permittedoperatingtemperature
1)Thecurvesdenotetheminimumallowableflangeclassfortheshadedareabelow.
Technical data - Operating conditions
atmosheric
Cable,threaded
P=permittedoperatingpressure T=permittedoperatingtemperature
atmosheric
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Approvals
Note:EN61326(CEEMC)testingwasconductedwhilemountedinametallicvesselandwiredusingshieldedcable,wherethecablewasterminatedinanEMCcableglandatthedeviceentrypoint.Inaddition,unitswithaflangeprocessconnectionweremountedusingametallicgasket.
1 BarrierorIntrinsicallySafepowersupplyrequiredforIntrinsicallySafeprotection
Electronicmodule:Digital (ProfibusPA/SolidState)
General Purpose CE, CSA, FM, TR-CU
Dust Ignition Proof ATEX II 1/2 DCSA/FMClassII,Div.1,Gr.E,F,GClassIIITR-CUINMETRO
FlameProof/ExplosionProof ATEXII1/2GExd[ia]IIC CSA/FMClassI,Div.1,Gr.A,B,C,DTR-CUINMETROKC
Intrinsically Safe 1 ATEXII1GExiaIICCSA/FMClassI,Div.1,Gr.A,B,C,DTR-CU
Type of protection nNon-incendive
ATEXII3GExnAIICSA/FMClassI,Div.2,Gr.A,B,C,D
Electronicmodule:Standard(RelaySPDT/SolidState)
General Purpose CE, CSA, FM, TR-CU
Dust Ignition Proof ATEX II 1/2 DCSA/FMClassII,Div.1,Gr.E,F,GClassIII TR-CUINMETRO
FlameProof/ExplosionProof ATEXII1/2GExd[ia]IIC CSA/FMClassI,Div.1,Gr.A,B,C,DTR-CUINMETROKC
Marine LloydsRegisterofShipping,CategoriesENV1,ENV2andENV5
OverfillProtection WHG
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Mounting
•Installationshallonlybeperformedbyqualifiedpersonnelandinaccordancewithlocalgoverningregulations.•Thisproductissusceptibletoelectrostaticshock.Followpropergroundingprocedures.•Thehousingmayonlybeopenedformaintenance,localoperation,orelectricalinstallation.•Beforeinstallingtheinstrument,verifythattheenvironmentcomplieswithanyrestrictionsspecifiedontheproductnameplate.•TocomplywithCEEMCregulations,whereapplicable,theCN8000shouldbeinstalledinaccordancewiththetestingdetailsonpage15.
Handling Precautions
WARNING:Topreventdamage,allunitswithapipelongerthan2m(6.5ft)mustbehandledasdescribedbelow.
WhenliftingCN8000fromahorizontalposition,supportitatthesethreepoints:
At the end of the pipebeforethesensor
Midwayalongthe pipe
At the processconnection or flange
Oncevertical,CN8000maybeheldbytheprocessconnectionorflange:
At the processconnection or flangeNote:
Unitshownwithextendedpipeversion.Handlingprecautionsapplytoallunitswithpipeslongerthan2m(6.5ft).
General Safety Instructions
Additional Safety Instructions for Hazardous Locations
see page 31ff
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Mounting
Location
Recommended:•Provideasunshieldtoprotectthetransmitterfromdirectheatradiation.
Precautions:•AvoidmountingCN8000inlocationssubjecttostrongvibrationsinthevicinity,wheneverpossible.•Donotexceedthepermissibleambienttemperaturelimits(seeEnvironmentalonpage11fordetails).
MountingCompact probe
Highlevelalarm Lowlevelalarm
Forhighlevelalarm(levelexceedsnormalprocesslevel): •normallymountedintothevesseltop,or •mountedthroughthetankwallatthedetectionlevel
Forlowlevelalarm(leveldropsbelownormalprocesslevel): •mountedthroughthetankwallatthedetectionlevel
Typical configuration with extensions
Forhighorlowlevelalarm: •designedfortopmounting.Theprobesuspendsverticallysothatitreachesintotheprocessatthedesired detectionlevel(highorlowdetectionalarm).
Highlevelalarm Lowlevelalarm
Angle
normalprocesslevel
normalprocesslevel
normalprocesslevel
normalprocesslevel
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Mounting
Mounting Restrictions
•Keepthesensoratleast50mm(2")awayfromanynozzleortankwall.•Ifmultipleunitsareused,allowatleast100mm(4")betweenthem,topreventinterference.
In nozzle Close to tank walls
Multiple Units
SideView EndView
Sensorsmustbeatleast100mm(4")apart.
Mount diagonally if space is restricted
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50mm(2")min
100mm (4")min
100mm (4")min
100mm (4")min
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Level limit switchSeries CN 8000Technical Information / Instruction manual
Mounting
Process Cautions for solids
•Themaximumallowabletorqueonahorizontallyinstalledpipeis15Nm.•Keepunitoutofpathoffallingmaterial,orprotectprobefromfallingmaterial.
Considermaterialsurfaceconfigurationwheninstallingunit.
Tensileloadmustnotexceedprobeorvesselrating(seeTensile(max)onpage10).
Avoidareaswherematerialbuildupoccurs.
In Hazardous Locations: Observe Specifc condition of use for electrostatic charge (see page 33)
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Electrical installation
WARNING: •Observethespecificationsoftheexaminationcertificatevalidinyourcountry. •Observethelawsandregulationsvalidinyourcountryforelectricalinstallationsinpotentiallyexplosive atmospheres. •RefertoHazardousAreaInstallationonpage31ifapplicable. •Ensurethattheavailablepowersupplycomplieswiththepowersupplyspecifiedontheproductnameplate andspecifiedintheexaminationcertificatevalidinyourcountry. •Shippingplugsinthecableinletsmustbereplacedbysuitablescrewtypeglandsordummyplugs,whichare appropriatelycertifiedfortransmitterswithexplosion-proofprotection. •ForCEinstallations,useacablewithabraidedmetallicshield(orarmouredcablewhereapplicable). •Thelidmustnotbeopenedinwetlocationswhiletheunitispowered.(Awetlocationisalocationwhere wateroranotherconductivefluidmaybepresentandislikelytoincreasetheriskofelectricshock.)
Notes: •LayPROFIBUSPAcableseparatelyfrompowercablewithvoltagesgreaterthan60V. •Avoidlocatingtheunitnearlargeelectricalequipmentwhereverpossible. •Connectthecableshieldtoearth(forexample,tothehousingbymeansofametallicscrewedgland).
WARNING: •Allfieldwiringmusthaveinsulationsuitableforatleast250V. •Onlyqualifiedpersonnelareauthorizedtoinstallandoperatethisequipmentinaccordancewithestablished safetypracticesandstandards.
•TheProtectiveEarthTerminalindicatedby mustbeconnectedtoreliableground.Incaseof non-metallicvessels,theexternalearthwireshouldbeconnectedtoanearthedcomponentwhichis earthednearthevessel. •Allwiringmustbedonebyqualifiedpersonnelinaccordancewithallgoverningregulations. •Theequipmentmustbeprotectedbya15Afuseorcircuitbreakerinthebuildinginstallation. •Acircuitbreakerorswitchinthebuildinginstallation,markedasadisconnectswitch,shallbeinclose proximitytotheequipmentandwithineasyreachoftheoperator. •Useshieldedcable,wiregauge20AWGto14AWG(0.5mm2to2.0mm2).ForCEinstallationsuseacable withabraidedmetallicshield(orarmouredcablewhereapplicable). •Maximumworkingvoltagebetweenadjacentrelaycontactsis250V. •Relaycontactterminalsareforusewithequipmentwhichhasnoaccessiblelivepartsandwiringwhichhas insulationsuitableforatleast250V.
Additional Safety Instructions for Hazardous Locationssee page 31ff
General Safety Instructions
Electronicmodule:Standard(RelaySPDT/SolidState)
Electronicmodule:Digital (ProfibusPA/SolidState)
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Level limit switchSeries CN 8000Technical Information / Instruction manual
Electrical installation
Electronicmodule:Standard(RelaySPDT/SolidState)
Note:Switchandpotentiometersettingsareforillustrationpurposesonly.
red
black
white
Connectprotectiveearthwiretoterminalprovidedinhousingandmarkedwith
1.Loosenthelidclipandremovethelidtoaccesstheconnectorsandelectronics.2.Connectthewirestotheterminals3.Groundtheinstrumentaccordingtolocalregulations.4.Tightentheglandtoformagoodseal.
Power supply:
12to250VAC/DC(0to60Hz)2Wmax.
Signal output:
Relay:Floating relay SPDTACmax.250V,8A,2000VA,noninductiveDCmax.30V,5A,150W,noninductive
Solidstateswitch:30VDCor30VAC(peak),82mAObserveprotection(seebelow)
Powersupply
Relay
internal wiring
Solidstateswitch(polaritynotimportant)
Protection diode
ObserveaProtectiondiodeincaseofconnectinganexternalrelaytotheSolidstateswitch
Protection of Solid State Switch
Solid state switch
internal wiring
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Level limit switchSeries CN 8000Technical Information / Instruction manual
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Electrical installation
1.Loosenthelidclipandunscrewthelidoftheenclosure.2.Unscrewandliftupthedigitaldisplay(looseneachscrewtwoturnsbeforecompletelylooseningboth,tokeeptherubberretainingringsinplace.)3.Connectthewirestotheterminals4.Groundtheinstrumentaccordingtolocalregulations.5.Tightenthecableglandtoformagoodseal.6.Fixthedigitaldisplay.7.Toadjustthetransmitterlocally,usingthekeypad,gotoProgrammingviatheLocalUserInterface(LUI).Afteradjustment,replacetheenclosurelidandtightenthelidclip.
PowersupplyorProfibusPA
Solid state switch
Digital display
Electronicmodule:Digital (ProfibusPA/SolidState)
PowersupplyorProfibusPA*(polaritynotimportant)
internal wiring
Solidstateswitch(polaritynotimportant)
internal wiring
blue
blue
red
black
white
Protection diode
ObserveaProtectiondiodeincaseofconnectinganexternalrelaytotheSolidstateswitch
Protection of Solid State Switch:
Solid state switch
*WithuseofProfibusPAthewiringmustbeaccordingtoProfibusPAstandards.IfProfibusPAisnotused,ashieldedcableisrecommendedtoensurestablemeasurement.
Power supply:
12..30VDC,12.5mA
IntrinsicallySafe:12..24VDC,12.5mA
Intrinsicallysafebarrierrequired
ForATEX:Ui=24V,Ii=380mA,Pi=5.32W,Ci=5nF,Li=10 uH
ForFM/CSA:See"Connectiondrawingonpage23"
Signal output:
Solidstateswitch:30VDCor30VAC(peak),82mAObserveprotection(seebelow)
Intrinsicallysafe:Intrinsicallysafebarrierrequired
ForATEX:Ui=30V,Ii=200mA,Pi=350mW,Ci=0, Li=0
ForFM/CSA:See"Connectiondrawingonpage23"
Connecting the electronic module:
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Level limit switchSeries CN 8000Technical Information / Instruction manual
Electrical installation
FM/CSAapprovalConnectiondrawing
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Pro
du
ct
Gro
up
FO
R IN
TE
RN
AL
US
E O
NLY
Poin
t Level S
ensors
RF
80
00
/ C
N 8
00
0 u
nit
Enclo
surePA– PA+
so
lid s
tate
ou
tpu
t
Alarm OutputSolid State Switch
No
te 3
No
te1
& 2
No
te1
& 2
Com
munic
ation I/O
Com
munic
ation I/O
Insta
llatio
n m
ust
in a
cco
rda
nce
with
th
e N
atio
na
l E
lectr
ica
l C
od
e (
R)
(NF
PA
70
,A
rtic
le 5
04
) a
nd
AN
SI/
ISA
-RP
12
.06
.01
Hazard
ous (
Cla
ssifie
d)
Location
Uncla
ssifie
d L
ocation
IS C
LA
SS
I,
II,
III,
DIV
.1 G
RO
UP
SA
, B
, C
, D
, E
, F
& G
T6
...T
4
XP
CL
AS
S I
, D
IV.
1 G
RO
UP
SA
, B
, C
& D
T4
CL
AS
S I
, D
IV.
2 G
RO
UP
SA
, B
, C
& D
T4
CL
AS
S I
I, I
II,
DIV
. 1
GR
OU
PS
E,
F &
GT
4
Te
mp
era
ture
Cla
ss
T4
fo
r–
40
°C≤
am
bie
nt
tem
pe
ratu
re≤
+8
5°C
En
tity
Pa
ram
ete
r
GR
OU
PS
A
, B
, C
, D
, E
, F,
G;
IIC
GR
OU
PS
C
, D
, E
, F,
G;
IIB
Cu
rren
t Lo
op
Ou
tpu
t
Cu
rren
t Lo
op
Ou
tpu
tS
olid
Sta
te
Ou
tpu
t
So
lid S
tate
Ou
tpu
t
Ui (V
max)
24
V2
4 V
30
V3
0 V
Ii (
imax)
38
0 m
A3
80
mA
11
0 m
A2
00
mA
Pi
5.3
2 W
5.3
2 W
82
5 m
W1
.5 W
Ci
5 n
F5
nF
00
Li
10
µH
10
µH
00
NO
TE
S:
1)
Fie
ldbus input: s
pecifie
d to the fis
co m
odel
2)
Manufa
ctu
re’s
insta
llation instr
uctions m
ust be follo
wed for
insta
llation o
fA
ssocia
ted Intr
insic
ally
Safe
Appara
tus
3)
Either
one o
r both
wire p
airs b
etw
een
Associa
ted Intr
insic
ally
Safe
Appara
tus m
ust be
gro
unded s
cre
ened o
r shie
lded w
ires.
4)
For
FM
: In
sta
llation m
ust be in a
ccord
ance w
ith
AN
SI / IS
A12.0
6.0
1 a
nd the N
ational E
lectr
ical C
ode (
AN
SI / N
FP
A70)
5)
For
CS
A: In
sta
llation m
ust be in a
ccord
ance w
ith a
pplic
able
section o
f C
anadia
n E
lectr
ical C
ode (
CE
C)
6)
For
Div
isio
n 2
insta
llation, associa
ted a
ppara
tus is n
ot re
quired, in
sta
llation m
ust be in a
ccord
ance
with D
ivis
ion 2
wirin
g m
eth
ods a
nd s
upply
voltage m
ust not exceed 3
0 V
olts
7)
Dust-
tight seals
must be u
sed for
Cla
ss II and III insta
llations
8)
The
transm
itte
r is
appro
ved for
Cla
ss I, Z
one 0
applic
ations if connecting to
AE
x[ia] ra
ted
RF
8000 / C
N 8
000
Associa
ted Intr
insic
ally
Safe
Appara
tus.
The tra
nsm
itte
r is
suitable
only
for
Cla
ss I, Z
one 1
or
Zone 2
, and n
ot
suitable
for
Cla
ss 1
, Z
one 0
or
Cla
ss, D
ivis
ion 1
applic
ations
9)
For
FM
the u
nit m
ust be insta
lled u
sin
g F
MA
ppro
ved
Appara
tus
Exte
rna
l fr
am
e e
art
h t
erm
ina
l
Level limit switchSeries CN 8000Technical Information / Instruction manual
page
Operation - Electronic module: Standard
Settings
S1:Delay(coveredtouncovered)
S3:FailsafeHigh/LowS4:Test
P1
P2
switchpointDIPswitches
L2 red
delay
Usethedelayfunctiontoslowthesignaloutputresponse,andcompensateforturbulenceorfalsereadings.
S1 / S2: Signal output delay
S3: Failsafe High / Low
Failsafe Mode S3
Failsafe High
FailsafeLow*
relay switch relay switch
relay switch relay switch
*Factorysetting
*Factorysetting
S2:Delay(uncoveredtocovered)
S1
S2
Delay active*
Delay off
Delay active*
Delay off
Signaloutputdelay:Sensor covered to uncovered
Signaloutputdelay:Sensor uncovered to covered
Delaytime/seconds
DIPswitches
L3 green
L1 yellow
*Factorysetting
LEDsL1:Sensorstatus(yellow)ONifsensorisdetectedascovered(capacitanceonsensorisgreaterthansettedswitchpoint)L2:Signaloutput(red) ONifRelayisactivated/Solidstateswitchisclosed.L3:Powersupply(green)ONifpowerispresent
S5:Set-upmode/runmode
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Level limit switchSeries CN 8000Technical Information / Instruction manual
Operation - Electronic module: Standard
Allowstotestthesettedsignaloutputdelaytimewithouttheneedtochangethesensorfromcoveredtouncoveredorfromuncoveredtocovered.
S4 Normaloperation*
S4 Testmode If sensor is uncovered:SettingS4toTestmodesimulatesacoveredprobe.Afterthesetteddelaytime"Sensoruncoveredtocovered"(seeDIPswitchS2)haspassed,thesignaloutputandLED2(red)areswitching.
If sensor is covered:SettingS4toTestmodesimulatesauncoveredprobe.Afterthesetteddelaytime"Sensorcoveredtouncovered"(seeDIPswitchS1)haspassed,thesignaloutputandLED2(red)areswitching.
S4: Test
*Factorysetting
*Factorysetting
S5: Set-up mode / run mode
S5 Runmode* Normaloperationafterswitchpointadjustmentiscomplete.
S5 Set-upmode Usethissettingonlyduringswitchpointadjustment.
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Level limit switchSeries CN 8000Technical Information / Instruction manual
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Operation - Electronic module: Standard
Switchpoint Adjustment
Application Material Adjustment conditions
General • Dry solids•Lowviscosityliquids
Sensor uncovered
Demanding •Hygroscopic/wetsolids•Highviscosityandhighconductivityliquids
Sensorimmersedandthenuncovered,retainingmax.possiblematerialbuildup
Interfacedetection
•IgnoringliquidA/detectingliquidB•Ignoringfoam/detectingliquid
ImmersesensorinliquidAorfoam
General applications
1. Ensure material level is well below the probe
Theunitwillcalibratetoanuncoveredprobe.
2. Set to Set-up mode SetdipswitchS5toSet-upmode
3. Adjust switchpoint with poti P2
IfLEDL1(yellow)isOFF,turnpotiP2counterclockwiseuntilL1isON.
TurnP2clockwiseuntilL1juststopsglowing.
4. Set to Run mode SetdipswitchS5toRunmode
Switchpoint adjustment is finished
Selecttheswitchpointadjustmentaccordingtotheapplicationasfollows:
P2L1
yellow
S5
S5
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Operation - Electronic module: Standard
Demandingapplications
1. Ensure material level is well above the probe.
Incaseoftopmountingwithcableextensionthevesselshouldbefilledup.
2. Ensure material level is well below the probe
Itisimportantthatasmuchmaterialbuildupaspossibleisretainingonthesensor.
3. Set to Set-up mode SetdipswitchS5toSet-upmode
4. Adjust switchpoint with poti P2
IfLEDL1(yellow)isOFF,turnpotiP2counterclockwiseuntilL1isON.
TurnP2clockwiseuntilL1juststopsglowing.
5. Set to Run mode SetdipswitchS5toRunmode
Switchpoint adjustment is finished
S5
P2L1
yellow
S5
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Operation - Electronic module: Standard
Interface detection
LiquidAorfoam
LiquidB
LiquidAorfoam
LiquidB
L1 yellow
1. Immerse probe in liquid A or in foam which should NOT be detected
EnsurethatliquidAorfoam(whichshouldNOTbedetected)iscoveringtheprobe.
LiquidAorfoammusthavealower dielectric constantthanliquidB,whichshouldbedetected.
2. Set to Set-up mode SetdipswitchS5toSet-upmode
3. Adjust switchpoint with poti P2
IfLEDL1(yellow)isOFF,turnpotiP2counterclockwiseuntilL1isON.
TurnP2clockwiseuntilL1juststopsglowing.
Note:ThesensitivityisnowsettedthusthatliquidAorfoamisNOTdetected.
4. Set to Run mode SetdipswitchS5toRunmode
5. Immerse probe in liquid B which should be detected
EnsurethatliquidB(whichshouldbedetected)iscoveringtheprobe.
L1shouldglow.
Switchpoint adjustment is finished
S5
P2L1
yellow
S5
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Symptom Observation ActionNoAlarmResponse L3(green)off. Checkpowersupplyvoltage.
Alarmdoesn'tswitchwhensensorisuncovered.
L1(yellow)doesn'trespondwhensensorisuncovered.
ReadjusttrippointpotentiometerP2.
L1(yellow)respondswhensensorisuncovered.
CheckthatrelaychangesstatewhenS3istoggledONandOFF.
Alarmdoesn'tswitchonwhensensoriscovered.
L1(yellow)doesn'trespondwhensensoriscovered.
ReadjusttrippointpotentiometerP2.
L1(yellow)respondswhensensoriscovered.
CheckthatrelaychangesstatewhenS3istoggledONandOFF.
L1(yellow)flasheswhenmateriallevelapproachesthealarmsetpoint.
Operation - Electronic module: Standard
Troubleshooting
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Operation - Electronic module: Digital
Seeseparate"OperatingManual(DigitalElectronic)"
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Level limit switchSeries CN 8000Technical Information / Instruction manual
Notes for use in Hazardous Locations
Use of this Manual
Foruseandassembly,refertotheinstructionsinthisManual.ItdoescontainallinstructionasrequiredbyATEXDirective2014_34_EU,AnnexII,1/0/6andOrdinanceINMETROnº179/2010
General notesRefertoappropriatecertificateforapplicationinspecifichazardousenvironment.
Theequipmenthasnotbeenassessedasasafetyrelateddevice(asreferredtobyDirective2014_34_EUAnnexII,clause1.5).
Thecertificatenumbershavean'X'suffix,whichindicatesthatspecificconditionofuseapply.Thoseinstallingorinspectingthisequipmentmusthaveaccesstothecertificates.
Qualificationofpersonnel/Servicing/Repair
Installationandinspectionofthisequipmentshallbecarriedoutbysuitablytrainedpersonnelinaccordancewiththeapplicablecodeofpractice(ABNTNBRIEC/EN60079-14andABNT/NBRIEC/EN60079-17inEurope).
Repairofthisequipmentshallbecarriedoutbysuitablytrainedpersonnelinaccordancewiththeapplicablecodeofpractice(e.g.ABNTNBRIEC/EN60079-19withinEurope).
Repairofflameproofpathisnotintended. Componentstobeincorporatedintoorusedasreplacementsintheequipmentshallbefittedbysuitablytrainedpersonnelinaccordancewiththemanufacturer'sdocumentation.
InpotentiallyexplosiveatmospheresopentheenclosureonlywhenCN8000isnotenergized.Turnoffpowerbeforeservicinganydevice(thetransmitterisinoperationwhenthepowersupplyisswitchedon).Incaseofremovingtheunitfromvessel,takecareofprocesspressureandmaterialpassingtheopening.
ATEX:Certificates/ListofStandards
Seewww.uwt.deforthelatestcertificates
SeeEU-DeclarationofconformityforthelistofstandardsvalidforATEXcertificates
ATEX:Yearofmanufacturing
MarkingonthenameplateisdoneaccordingtoIEC60062asfollows:
Yearofmanufacturing 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029
Markingcode K L M N P R S T U V W X
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Notes for use in Hazardous Locations
ATEX:Permittedzonesforinstallation
Ambientside
Process side
Shortest length and pipeextension
Remoteversion
Sliding coupling
Cableversion
Dust applications Gas applications
markingDa/Db
markingDa
markingGa/Gb
markingGa
EPL Db Da Gb GaCategory 2D 1D 2G 1GZone 21 20 1 0
EPL Da Da Ga Ga
Category 1D 1D 1G 1GZone 20 20 0 0
Devicescanbeinstalledasfollows:
•DeviceswithATEXapprovalaremarkedonthenameplateasfollows.•IfbothFlameproofandDustignitionproofarepresentonthesamenameplate,atickbox ispresentwheretheenduserneedstoselect(mark)theprotectionmethodusedatthetimeofinstallation.•ForDustIgnitionProof:symbol referstotheMax.SurfaceTemperature(seepage34).
Dust Ignition Proof (TypecodePos.2W):
Integralversion: II1/2DExia/tbIIICT200 Da/Db
Remoteversion: Electronicsenclosure: II2(1)DExtb[ia]IIICT200 Db
Levelprobesensor: II1DExiaIIICT200 Da
II1/2DExiaIIICT200 Da/Db
Flameproof / Dust Ignition Proof(TypecodePos.2T):
Integralversion: II1/2GExdb[ia]IICT6...T4Ga/Gb
II1/2DExia/tbIIICT200 Da/Db
Remoteversion: Electronicsenclosure: II2(1)GExdb[ia]IICT6...T4Gb
II2(1)DExtb[ia]IIICT200 Db
Levelprobesensor: II1GExiaIICT6…T4Ga
II1DExiaIIICT200 Da
II1/2DExiaIIICT200 Da/Db
Intrinsically Safe(TypecodePos.2Y):
Integralversion: II1GExiaIICT6...T4Ga
II1/2DExiaIIICT200 Da/Db
Remoteversion: Electronicsenclosure: II1GExiaIICT6...T4Ga
II2DExiaIIICT200 Db
Levelprobesensor: II1GExiaIICT6...T4Ga
II1DExiaIIICT200 Da
II1/2DExiaIIICT200 Da/Db
Type of protection n(TypecodePos.2G): II3GExnAIIT6…T4Gc
ATEX:Ex-Marking
shownexemplarywithpipeextension
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Specificconditionofuse
Intrinsically safe supply
Forintrinsicallysafemodels,powermustbesuppliedfromanIntrinsicallySafepowersource,otherwiseprotectionisnolongerguaranteed.
Process pressure Thedeviceconstructionallowsprocessover-pressureupto10or25bar(146or365psi).Thispressureisallowedfortestpurposes.ThedefinitionoftheExapprovalsareonlyvalidforacontainer-over-pressurebetween-0.2..+0.1bar(-2.9..+1.45psi).Forhigherorlowerpressurestheapprovalsarenotvalid.
Process and ambient temperature
Thepermittedtemperaturerangesaremarkedonthenameplate.Pleasechecktheambientandprocesstemperaturespage11forthespecificconfigurationyouareabouttouseorinstall.
Chemical resistanceagainst the medium
Iftheequipmentislikelytocomeintocontactwithaggressivesubstances,thenitistheresponsibilityoftheusertotakesuitableprecautionsthatpreventitfrombeingadverselyaffected,thusensuringthatthetypeofprotectionisnotcompromised.Aggressivesubstances:e.g.acidicliquidsorgasesthatmayattackmetals,orsolventsthatmayaffectpolymericmaterials.Suitableprecautions:e.g.establishingfromthematerial'sdatasheetthatitisresistanttospecificchemicals.
Warnings for installation
Notes for use in Hazardous Locations
Electrostatic charge
Partsoftheenclosureandoftheprobearenon-conductingandmaygenerateanignition-capablelevelofelectrostaticchargeundercertainextremeconditions.Theusershouldensurethattheequipmentisnotinstalledinalocationwhereitmaybesubjectedtoexternalconditionswhichmightcauseabuildupofelectrostaticchargeonnon-conductingsurfaces.
SpecialobervationsonProcessside(probe):Specialobservationmustbedoneifpowdertouchestheprobeduringfillingandduringwhirling.
SpecialobervationsonEnclosureside:Becausetheenclosureoftheequipmentismadeofaluminiumalloy,theapparatusmustbeinstalledso,thatevenintheeventofrareincidents,anignitionsourceduetoimpactorfrictionbetweentheenclosureandiron/steelisexcluded,whenusedinapotentiallyexplosiveatmosphererequiringapparatusofequipmentcategory1G.Cleaningoftheequipmentshouldbedoneonlywithadampcloth.
Cable entry device / closing element
Foruseinpotentiallyexplosiveatmospheresofflammablegases,fluidsorvapours(Flameproof):Thecableentrydevicesandtheclosingelementsofunusedaperturesshallbeofacertifiedflameprooftype,suitablefortheconditionsofuseandcorrectlyinstalled.
Foruseinthepresenceofcombustibledust(Dustignitionproof):Thecableentrydevicesandtheclosingelementsofunusedaperturesshallbeofacertifiedflameprooftype,suitablefortheconditionsofuseandcorrectlyinstalled.TheminimumingressprotectionrequirementofIP6XaccordingtoEN60529mustbesatisfied.
Max. permitted temperature close to the enclosure
Themax.resutlingtemperatureclosetotheenclosure(seedottetline)resultingfromthetemperatureincreasefromprocesssidemustbelimitedbyinstallationto:80°C (176°F)withFlameprooforDustIgnitionProof or Type of protection n60°C (140°F) withIntrinsicallysafe
process side
temperatureextendedshaft
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Notes for use in Hazardous Locations
Ambienttemperaturerange
Process temperaturerange
-20to+60°C(-4to+140°F) -20to+60°C(-4to+140°F)
Dust ignition proof:ThemaximumsurfacetemperatureofT100°Cisbasedonamaximumambienttemperatureof+85°C.
Flameproof with IS to probe:
ApplicationinZone0(cat1G):
ApplicationinZone1(cat2G):
Ambienttemperaturerange
Process temperaturerange
Temperatureclass
-40to+70°C(-40to+158°F) -40to+85°C(-40to+185°F) T6
-40to+85°C(-40to+185°F) -40to+95°C(-40to+203°F) T5
-40to+85°C(-40to+185°F) -40to+125°C(-40to+257°F) T4
INMETRO:
FM / CSA:
Ambienttemperaturerange
Process temperaturerange
Temperatureclass
-40to+85°C(-40to+185°F) -40to+125°C(-40to+257°F) T4
Ambienttemperaturerange
Process temperaturerange
Temperatureclass
-40to+40°C(-40to+40°F) -40to+40°C(-40to+40°F) T6
-40to+85°C(-40to+185°F) -40to+125°C(-40to+257°F) T4
Intrinsically safe:Installationshallbedoneaccordingto"FM/CSAApproval-Connectiondrawing"onpage23
Max.SurfaceTemperatureandTemperatureClass
Ambienttemperaturerange
Process temperaturerange
Max.SurfacetemperatureEPLDaorDb
Temperatureclass
EPLGaorGb-40to+70°C(-40to+158°F) -40to+80°C(-40to+176°F) T6
-40to+80°C(-40to+176°F) -40to+100°C(-40to+212°F) T5
-40to+80°C(-40to+176°F) -40to+125°C(-40to+257°F)(1) T4
ATEX:
(1)Onlyapplicableforversionswiththermalisolator
Electronicmodule:Standard
Ambienttemperaturerange
Process temperaturerange
Max.SurfacetemperatureEPLDaorDb
Temperatureclass
EPLGaorGb-40to+60°C(-40to+140°F) -40to+80°C(-40to+176°F) T6
-40to+60°C(-40to+140°F) -40to+100°C(-40to+212°F) T5
-40to+60°C(-40to+140°F) -40to+125°C(-40to+257°F)(1) T4
Electronicmodule:Digital
process side
thermalisolator
ambientside
Explosion proof / Dust ignition proof:
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12c CN 8000gi15091734
Capanivo®
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Level limit switchSeries CN 8000Technical Information / Instruction manual
Probe modifications
Shorteningthecable(cableversion)
CAUTION: Possibleonlywiththegeneralpurposeconfiguration;pleaseverifyagainstproductnameplate.
Preparation
Determinetherequiredcablelength,andsubtractthatamountfromtheactuallength,tofindtheexcesslengthtocutoff.Forexample:10m(actuallength)minus9m(requiredlength)=1m(excess)
Steps1.Unscrewthecableglandcompressionnuttorelievethesealingconeandreleasethecable.
2.Unscrewtheprobesleevefromthelowerassemblyusingtwo17mm(0.67")wrenchesacrosstheflatsurfaces,asshownbelow.
a.Placetwowrenchesontheflatsurfacesoftheprobeasshown:holdthe probesleevestill,andturnthelowerwrenchcounter-clockwisetoloosen theprobelowerassembly.
b.Removethelowerassemblybyturningthethreadedelectrodeend counter-clockwise:thisexposesthethreeleads,thetensionblock,and thesteelspacer.
flatsurface
flatsurface
lowerwrench
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12CN 8000 c gi150917 35
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cable glandcompression nut
probe sleeve
probe, lowerassembly
actuallength
requiredlength
excesslength
Level limit switchSeries CN 8000Technical Information / Instruction manual
page
Probe modifications
3.Removetheheatshrinkinsulationcoveringthesolderconnections.
4.Unsoldertheconnections. Note:Donotcuttheconnectionstotheprobeleads,asthiscanrenderthemtooshorttoworkwithlater.
5.Removethetensionblock,andsaveitforre-useinstep7.
6.Calculatetheexcesscable,thenaddbackanallowanceof75mm(3")formakingtheconnections: Forexample,1000mm=excess less75mm=allowanceforconnections 925mm=excesscabletoberemoved
7.Cutofftheexcesscable. Caution:Topreventwiresfrombeingpulledthroughthecablebundle,secureeachwireclosetowheretheouterblackjacketstopspriortostrippingcableinsulationfromit. 8.Removeapproximately75mm(3")ofcablejacket,shield,andfillerstrands.
9.Cutofftheexcesscablecore,makingsurethecutiscleanandsquare
10.Replacethesteelspacerandtensionblock,thenshortentheleadstoapproximately40mm(1.6").
11.Preparetheleadsforsoldering,andifheatshrinkisusedtoinsulatesplices,remembertoslipontheheatshrinkbeforesolderingtheleads.(Note:whiteheatshrinkhasbeenappliedtotheorangewiretosimplifycorrectconnection.) 12.Makethesolderconnectionsandpositiontheheatshrinktocompletelyinsulateeachsolderconnectionbeforeshrinkingit.
iead
25mm(0,37")heat shrinkinsulation
steel spacer
tensionblock
cablecore
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Level limit switchSeries CN 8000Technical Information / Instruction manual
Probe modifications
13.Removeanyexcesscablecore,ifnecessary.
14.ApplyPTFEtypetape/sealanttoallthreads.
15.Addapre-twisttothewiresbeforescrewingtheprobesleeveandlowerprobeassemblytogether:holdtheprobesleevestill,andgentlyturnthelowerprobeassemblycounter-clockwiseabout5fullturns.Thisavoidsthewiresbeingbrokenwhentheprobeandprobesleeveareassembled.
16.Screwthelowerprobeassemblyclockwiseintotheprobesleeve,andtightenitwitha17mm(0.67")wrench.
17.Checkthattheinstrumentisoperatingcorrectly,usingthetestprocedure(seeexternalOperatingManual).
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