Fischer DS21xxxH series Operating instructions

Fischer
Brand
Fischer
Model
DS21xxxH series
Type
Operating instructions

This manual is also suitable for

OperatingManual
DS21...H
Differentialpressuremeasuringandswitchingdevice
forexplosiveareas
FlowguardinheattransferoilsystemsincompliancewithDIN32727
andhotwatersystemsaccordingtoVdTÜVInformationsheet"Flow100"
09005342BA_EN_DS21_HST4A09/14
*09005342*
| Masthead FISCHER Mess‐ und Regeltechnik GmbH
2 / 48 BA_EN_DS21_H_ST4‐A
Masthead
Manufacturer: FISCHERMessundRegeltechnikGmbH
Bielefelderstr.37a
32107BadSalzuflen
Telephone:+4952229740
Telefax:+4952227170
eMail:[email protected]
web:www.fischermesstechnik.de
Technicaleditorialteam: Documentationrepresentative:S.Richter
Technicaleditor:R.Kleemann
Allrights,alsothosetothetranslation,reserved.Nopartoftheseinstructions
maybereproducedorprocessed,duplicatedordistributedusingelectronicsys
temsoranyotherform(print,photocopy,microfilmoranotherprocess)without
thewrittenconsentofthecompanyFischerMessundRegeltechnikGmbH,
BadSalzuflen.
Reproductionforinternaluseisexpresslyallowed.
Brandnamesandproceduresareusedforinformationpurposesonlyanddo
nottaketherespectivepatentsituationintoaccount.Greatcarewastaken
whencompilingthetextsandillustrations;nevertheless,errorscannotberuled
out.ThecompanyFISCHERMessundRegeltechnikGmbHwillnotacceptany
legalresponsibilityorliabilityforthis.
Subjecttotechnicalamendments.
©FISCHERMessundRegeltechnikGmbH2014
FISCHER Mess‐ und Regeltechnik GmbH Table of contents
BA_EN_DS21_H_ST4‐A iii
Tableofcontents
1 Safetynotes................................................................................................................................................... 5
1.1 General....................................................................................................................................................5
1.2 PersonnelQualification ...........................................................................................................................5
1.3 RisksduetoNonObservanceofSafetyInstructions..............................................................................5
1.4 SafetyInstructionsfortheOperatingCompanyandtheOperator ..........................................................5
1.5 UnauthorisedModification.......................................................................................................................6
1.6 InadmissibleModesofOperation............................................................................................................6
1.7 Safeworkingpracticesformaintenanceandinstallationwork................................................................6
1.8 Pictogramexplanation.............................................................................................................................6
2 Productandfunctionaldescription............................................................................................................. 7
2.1 Useasintended ......................................................................................................................................7
2.2 Equipmentversions.................................................................................................................................7
2.3 Functiondiagram.....................................................................................................................................9
2.4 Designandmodeofoperation ..............................................................................................................10
3 Installationandassembly .......................................................................................................................... 11
3.1 General..................................................................................................................................................11
3.2 Assembly...............................................................................................................................................11
3.3 Useinzoneswherethereisariskofexplosion ....................................................................................11
3.4 Processconnection ...............................................................................................................................13
3.5 Electricalconnections............................................................................................................................14
4 Commissioning ........................................................................................................................................... 16
4.1 General..................................................................................................................................................16
4.2 Safetyinformation .................................................................................................................................16
4.3 Displayandcontrolelements ................................................................................................................16
4.4 Leadseal...............................................................................................................................................17
4.5 Zeropointcorrection .............................................................................................................................17
4.6 Switchpointsetting ...............................................................................................................................17
4.7 Functiontest..........................................................................................................................................18
5 Maintenance ................................................................................................................................................ 19
5.1 Safetyinformation .................................................................................................................................19
5.2 Wartung(maintenance).........................................................................................................................19
5.3 Transport ...............................................................................................................................................19
5.4 Service ..................................................................................................................................................19
5.5 Accessories ...........................................................................................................................................20
5.6 Disposal.................................................................................................................................................22
6 Technicaldata ............................................................................................................................................. 23
6.1 Inputvariables .......................................................................................................................................23
6.2 Outputparameters ................................................................................................................................23
6.3 MeasuredValueDisplay .......................................................................................................................23
6.4 Electricalconnection .............................................................................................................................23
6.5 Applicationconditions............................................................................................................................24
6.6 Constructiondesign...............................................................................................................................24
6.7 Dimensionaldrawings ...........................................................................................................................25
7 OrderCodes ................................................................................................................................................ 31
Table of contents FISCHER Mess‐ und Regeltechnik GmbH
iv BA_EN_DS21_H_ST4‐A
8 Attachments .................................................................................................................................................33
8.1 ECDeclarationofconformity..................................................................................................................33
8.2 ECdeclarationofconformityATEX........................................................................................................34
8.3 ECtypetestingincompliancewith97/23/EC.........................................................................................35
8.4 Qualityassurancesystemincompliancewith97/23/EC........................................................................36
8.5 ATEXCertificate.....................................................................................................................................37
8.6 EACDeclaration.....................................................................................................................................43
8.7 DINCERTCOCertificationDIN32727:198102.....................................................................................43
8.8 Parttestcurrent100...............................................................................................................................44
8.9 GLCertificate .........................................................................................................................................45
8.10 SILCertificate.........................................................................................................................................46
FISCHER Mess‐ und Regeltechnik GmbH Safety notes | 1
BA_EN_DS21_H_ST4‐A 5 / 48
1 Safetynotes
1.1 General
WARNING Thisoperatingmanualcontainsinstructionsfundamentaltotheinstallation,op
erationandmaintenanceofthedevicethatmustbeobservedunconditionally.It
mustbereadbytheassembler,operatorandthespecializedpersonnelin
chargeoftheinstrumentbeforeitisinstalledandputintooperation.
Thisoperatingmanualisanintegralpartoftheproductandthereforeneedsto
bekeptclosetotheinstrumentinaplacethatisaccessibleatalltimestothe
responsiblepersonnel.
Thefollowingsections,inparticularinstructionsabouttheassembly,commis
sioningandmaintenance,containimportantinformation,nonobservanceof
whichcouldposeathreattohumans,animals,theenvironmentandproperty.
Theinstrumentdescribedintheseoperatinginstructionsisdesignedandmanu
facturedinlinewiththestateoftheartandgoodengineeringpractice.
1.2 PersonnelQualification
Theinstrumentmayonlybeinstalledandcommissionedbyspecializedperson
nelfamiliarwiththeinstallation,commissioningandoperationofthisproduct.
Specializedpersonnelarepersonswhocanassesstheworktheyhavebeen
assignedandrecognizepotentialdangersbyvirtueoftheirspecializedtraining,
theirskillsandexperienceandtheirknowledgeofthepertinentstandards.
WARNING Forexplosionproofmodelsthespecializedpersonnelmusthavereceivedspe
cialtrainingorinstructionorbeauthorizedtoworkwithexplosionproofinstru
mentsinexplosionhazardareas.
1.3 RisksduetoNonObservanceofSafetyInstructions
Nonobservanceofthesesafetyinstructions,theintendeduseofthedeviceor
thelimitvaluesgiveninthetechnicalspecificationscanbehazardousorcause
harmtopersons,theenvironmentortheplantitself.
Thesupplieroftheequipmentwillnotbeliablefordamageclaimsifthisshould
happen.
1.4 SafetyInstructionsfortheOperatingCompanyandtheOperator
Thesafetyinstructionsgoverningcorrectoperationoftheinstrumentmustbe
observed.Theoperatingcompanymustmakethemavailabletotheinstallation,
maintenance,inspectionandoperatingpersonnel.
Dangersarisingfromelectricalcomponents,energydischargedbythemedium,
escapingmediumandincorrectinstallationofthedevicemustbeeliminated.
Seetheinformationintheapplicablenationalandinternationalregulations.
PleaseobservetheinformationaboutcertificationandapprovalsintheTech
nicalDatasection.
Theinstrumentmustbedecommissionedandsecuredagainstinadvertentre
operationifasituationarisesinwhichitmustbeassumedthatsafeoperationis
nolongerpossible.Reasonsforthisassumptioncouldbe:
▪ evidentdamagetotheinstrument
▪ failureoftheelectricalcircuits
▪ longerstorageoutsidetheapprovedtemperaturerange.
▪ considerablestrainduetotransport
1 | Safety notes FISCHER Mess‐ und Regeltechnik GmbH
6 / 48 BA_EN_DS21_H_ST4‐A
Repairsmaybecarriedoutbythemanufactureronly.
AprofessionalsingleconformityinspectionasperDINEN61010,section1,
mustbecarriedoutbeforetheinstrumentcanberecommissioned.Thisin
spectionmustbeperformedatthemanufacturer'slocation.Correcttransport
andstorageoftheinstrumentarerequired.
1.5 UnauthorisedModification
Modificationsoforothertechnicalalterationstotheinstrumentbythecustomer
arenotpermitted.Thisalsoappliestoreplacementparts.Onlythemanufac
turerisauthorisedtomakeanymodificationsorchanges.
1.6 InadmissibleModesofOperation
Theoperationalsafetyofthisinstrumentcanonlybeguaranteedifitisusedas
intended.Theinstrumentmodelmustbesuitableforthemediumusedinthe
system.Thelimitvaluesgiveninthetechnicaldatamaynotbeexceeded.
Themanufacturerisnotliablefordamageresultingfromimproperorincorrect
use.
1.7 Safeworkingpracticesformaintenanceandinstallationwork
Thesafetyinstructionsgiveninthisoperatingmanual,anynationallyapplicable
regulationsonaccidentpreventionandanyoftheoperatingcompany'sinternal
work,operatingandsafetyguidelinesmustbeobserved.
Theoperatingcompanyisresponsibleforensuringthatallrequiredmainten
ance,inspectionandinstallationworkiscarriedoutbyqualifiedspecializedper
sonnel.
1.8 Pictogramexplanation
DANGER Typeandsourceofdanger
Thisindicatesadirectdangeroussituationthatcouldleadtodeathorserious
injury(highestdangerlevel).
a) Avoiddangerbyobservingthevalidsafetyregulations.
WARNING Typeandsourceofdanger
Thisindicatesapotentiallydangeroussituationthatcouldleadtodeathorser
iousinjury(mediumdangerlevel).
a) Avoiddangerbyobservingthevalidsafetyregulations.
CAUTION Typeandsourceofdanger
Thisindicatesapotentiallydangeroussituationthatcouldleadtoslightorseri
ousinjury,damageorenvironmentalpollution(lowdangerlevel).
a) Avoiddangerbyobservingthevalidsafetyregulations.
NOTICE Note/advice
Thisindicatesusefulinformationofadviceforefficientandsmoothoperation.
FISCHER Mess‐ und Regeltechnik GmbH Product and functional description | 2
BA_EN_DS21_H_ST4‐A 7 / 48
2 Productandfunctionaldescription
2.1 Useasintended
Theunitisexclusivelydesignedforthepurposedefinedbythemanufacturerin
thedatasheetoroperatinginstructions.
Theunitissuitableforoperationinpotentiallyexplosiveareas
▪ Zone1and2–Riskfromvapours
▪ Zone21and22–Riskfromdust
Foreveryapplication,therespectiveinstallationinstructionsandtheconditions
laidoutinthesection'Useinexplosiveareas'mustbeobserved.
Differentialpressuremeasuringandswitchingdevice
TheDS21isameasuringandswitchunitformeasuringdifferentialpressure
underdifficultmeasuringconditionssuchas:pressuresurges,vibrations,fre
quentswitchingandhighdemandsontheswitchingoutput.Pleasecontactthe
manufacturerbeforeusingthisunitwithdirtyoraggressivemediabecausethe
unitneedstobeadaptedintermsofthepartsthatcomeintocontactwiththe
media.
Flowassurance
Theunitsinthisseriesareusedasflowguardsinheattranferoilsystemsin
compliancewithDIN32727andhotwatersystemsincompliancewithVdTÜV
informationsheet'Flow100'.Theflowguardscompriseadifferentialpressure
transducer,e.g.ameasuringorifice,thedifferentialpressuremeasuringand
switchunitandshutofffittings.Therespectiveinstallationinstructionsmustbe
observedforthisapplicationcase.AllunitsoftheseriesDS21satisfythesere
quirements.
NOTICE ThetypetestsincompliancewithDIN32727andVdTÜVinformationsheet
"Flow100"onlyapplyinconjunctionwithadifferentialpressuretransducer,not
foradifferentialpressuremeasuringandswitchingdevicealone.
ThesuccessfultypetestoftheseriesDS21wasconfirmedbymeansofthefol
lowingtestsymbols:
▪ forflowguardsincompliancewithDIN32727:
DINCERTCOregistrationnumber1B012/07
▪ accordingtoVdTÜVInformationsheet"Flow100“:
PartcodeTÜV.SW/SB.07–020
2.2 Equipmentversions
TheDS21canbesuppliediwththefollowingdifferentpressurechambers:
▪ Aluminium
▪ Stainlesssteel1.4305
ThealuminiumpressurechamberscanalsobesuppliedwithaHARTCOAT®
coating.Thefollowingshowsthevariousunitversions.
AllcasingshaveprotectionclassIP65.
TheDS21canalsobeusedasapressuremeasuringandswitchunit.The
measurementisarelativepressuremeasurement.Thefollowingillustrationsof
thevariousdevicemodelsarefoundintheleftsideofthedifferentialpressure
devicesandontherightsideofthepressuremeasurementdevices.
2 | Product and functional description FISCHER Mess‐ und Regeltechnik GmbH
8 / 48 BA_EN_DS21_H_ST4‐A
NOTICE Switchpanelinstallation
Pleasenotethattheswitchpointsofdeviceswithbayonetringsneedtobeset
beforemountingthecontrolpanel.Wheninstalled,theunitcannolongerbe
opened.
Pleaseseetheordercodefortheprocessconnectionoptions.
2.2.1 Pressurechamberinaluminium
Pressurechamber Groundconnection
Processconnection
differentialpressure
Assemblyfoot
Processconnection
pressure
Pressureequalisationelement
Processconnection
below
Processconnection
rear
Switchpanelinstallationkit
Electricalconnections
Illustration1:DS21Pressurechamberinaluminium[ATEX]
FISCHER Mess‐ und Regeltechnik GmbH Product and functional description | 2
BA_EN_DS21_H_ST4‐A 9 / 48
2.2.2 Pressurechamberinstainlesssteel
Assemblyfoot
Illustration2:DS21Pressurechamberinstainlesssteel[ATEX]
2.2.3 Electroconnectionvariants
Allunitmodelsaresuppledwithacablesocket.OnlytheGLmodelissupplied
withanadditional3mlongconnectioncable.Theassociatedwiringdiagrams
areshownonthetypeplateandinthesection'Installationandassembly'.
2.3 Functiondiagram
2
1
3
4
5
6
1
7
8
Modelasdifferentialpressuremeasuringandswitchingdevice
Illustration3:DS21Functiondiagramdifferentialpressure[ATEX]
2 | Product and functional description FISCHER Mess‐ und Regeltechnik GmbH
10 / 48 BA_EN_DS21_H_ST4‐A
Modelaspressuremeasuringandswitchingdevice
9
8
Illustration4:DS21Functiondiagrampressure[ATEX]
1 Pressurechamber 2 Motiontrain
3 Tappet 4 Microswitch
5 Switchpointsetting 6 Measuringdiaphragm
7 Measuringsprings 8 Groundconnection
9 Closingplug
2.4 Designandmodeofoperation
Thebasisforthismeasurementandswitchunitisasturdynonsensitivedia
phragmmeasuringunitthatissuitableformeasuringdifferentialpressure,and
overandunderpressure.Theunitusesthesamemeasuringprincipleforall
threemeasuringapplications.
Intheidleposition,thespringforcesareequalisedonbothsidesofthemeasur
ingdiaphragm.Thepressurethatistobemeasuredorthedifferentialpressure
createsaonesidedforceonthemeasuringdiaphragmthatmovesthedia
phragmsystemagainstthemeasuringrangespringsuntilthespringforcesare
equalised.Inthecaseofoverload,themeasuringdiaphragmissupportedby
metalliccontactsurfaces.
Acentraltappettransfersthemovementofthediaphragmsystemontothedis
playmechanismand,atthesametime,ontotheactuationelementsofthemi
croswitches.Theswitchpointsaresetviathesettingscrewsandrefernec
valuescale.
FISCHER Mess‐ und Regeltechnik GmbH Installation and assembly | 3
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3 Installationandassembly
3.1 General
Theinstrumentmayonlybeinstalledandcommissionedbyspecializedperson
nelfamiliarwiththeinstallation,commissioningandoperationofthisproduct.
Specializedpersonnelarepersonswhocanassesstheworktheyhavebeen
assignedandrecognizepotentialdangersbyvirtueoftheirspecializedtraining,
theirskillsandexperienceandtheirknowledgeofthepertinentstandards.
Ifunitsareusedinpotentiallyexplosiveareas,thepersonnelmustreceiveaddi
tionaltrainingorbriefingsorhaveapermittoworkionexplosionprotectedunits
inpotentiallyexplosivesystems.
3.2 Assembly
Thestandardunitisdesignedforwallmounting.Thisisaccomplishedusingthe
rearattachmentplatethatactsasamountingfoot.
Acontrolpanelinstallationsetcanbeorderedforeachunitthatallowedinstall
ationonthefrontoftheunit.
Theunitcanbeorderedforuseasapressure,measuringandswitchunit;itis
designedfordirectmounting.Thisisaccomplishedusingaconnectionadapter
thatiseithermountedbewlotheunitorontherearwall.Wallmountingisnot
possibleifthereisarearconnectionadapter.
Theunitissetforverticalinstallationexworks.Onlythisinstallationpoistionis
allowed.Toensuresafetyduringinstallationandmaintenance,werecommend
installingasuitableshutoffvalveonthesystem.
WARNING Installationregulations
Duringinstallationandmounting,theapplicationspecificinstallationguidelines
intherespectiveapprovalsintheappendixmustbesatisfied.
WARNING Fallingobjects
Theoperatormustensurethatanyfallingobjectscannotcollidewiththein
stalledunit.Stepsmustbetakentoprevent
üsparksbeinggeneratedonimpact.
ütheprotectionclassofthecasingisnolongerguaranteed.
a) Thiscanbeavoidedbyattachingprotectivecover,
b) aprotectivecasingor
c) asimilarelement.
3.3 Useinzoneswherethereisariskofexplosion
3.3.1 Applicationareas
Zone1and2–Riskfromvapours
▪ Ordercode:
DS21###########H
▪ Identification:
II2GExibcIICT6Gb
3 | Installation and assembly FISCHER Mess‐ und Regeltechnik GmbH
12 / 48 BA_EN_DS21_H_ST4‐A
▪ Certificatesanddeclarations:
CEdeclarationofconformityforequipmentofcategory2
ECExaminationCertificate94/9/EC
(TÜV06ATEX2964)
Zone21and22–Riskfromconductivedust
▪ Ordercode:
DS21###########H
▪ Identification:
II2DtbcIIICT70°CDb
▪ Certificatesanddeclarations:
CEdeclarationofconformityforequipmentofcategory2
ECExaminationCertificate94/9/EC
(TÜV06ATEX2964)
3.3.2 Authorizedtemperatures
▪ Permissibleambienttemperature:10°C≤Tamb≤60°C
▪ Allowedmediumtemperatureinthedifferentialmeasurementinstrument:
60°C.
X
Differential
pressureline
Shutoffvalve Medium
T=300°C
T=60°C
Illustration5:DS21MMeasure
mentsetup
Dependingonthesystem,themediamayreachtemperaturesof>60°C.No
mediaflowsthroughthepressuredifferentiallinesbetweenthepressurediffer
entialtransducerandthedifferentialpressuremeasuringandswitchunit.When
settingthelengthofthedifferentialpressurelines,atemperaturedropiscre
atedthatcanreducethemediatemperaturetotheallowed60°Cintheunit.The
mediatemperaturedropsbyapprox.50Kforevery100mmofdifferentialpres
sureline(pipe6x1).
Theallowedlengthofthedifferentialpressureline(x)mustbeatleast500mm
incompliancewithDIN32727.
Thislinereducesthemediatemperatureof300°Ctotheambienttemperature
beforeitreachestheunit.Ifthemediatemperatureishigher,longerdifferential
pressurelinesarerequired.
Thedesignofthedifferentialpressurelineistheresponsibilityofthesystem
manufacturer.
WARNING Temperatureclass
TheoperatorandsystemmanufacturermustobservethetemperatureclassT1
…T6thatdependsonthemediatemperatureandthemaximumallowedsur
facetemperatureT70°Cfortherespectiveapplication.
WARNING Pulsatingdifferentialpressures
Inthecaseofgaseousmedia,compressionheatthatcanbecreatedviapulsat
ingdifferentialpressurescanleadtoainincreaseinthetemperatureofthecas
ing.Forsafetyreasons,thepulsefrequencyof0.2Hzmaynotbeexceeded.At
thisfrequencyandadifferentialpressurechangebetween10and90%ofthe
measuringrange,thetemperaturerisesbylessthan3°C.
Themaximumsurfacetemperature70°Cwasdeterminedunderthefollowing
conditionswithoutdustaccumulationandsafetyfactor.
üAmbienttemperature:60°C
üMediumtemperatureintheinstrument:60°C
üPulsefrequency:<0.2Hz
a) Thistheseapplicationcases,thepressurechangespeedmustbethrottled,
e.g.bymeansofcapillarythrottles.
FISCHER Mess‐ und Regeltechnik GmbH Installation and assembly | 3
BA_EN_DS21_H_ST4‐A 13 / 48
WARNING Sunlight
Inordertoavoidadditionalheating,theinstrumentsmaynotbeexposedtodir
ectsunlightduringoperation.
WARNING Isolation
Thedifferentialpressurelinesmaynotbeinsulated.
3.4 Processconnection
▪ Byauthorizedandqualifiedspecializedpersonnelonly.
▪ Thepipesneedtobedepressurizedwhentheinstrumentisbeingconnec
ted.
▪ Appropriatestepsmustbetakentoprotectthedevicefrompressuresurges.
▪ Checkthatthedeviceissuitableforthemediumbeingmeasured.
▪ Maximumpressuresmustbeobserved(cf.Tech.data)
Illustration6:Differentialpres
sureconnection
Thedifferentialpressureconnectionsaremarkedwith(+)and()symbolson
thedevice.Thedifferentialpressureconnectionlinesmustbemountedaccord
ingtothesesymbols.
▪ (+)Higherpressure
▪ ()Lowerpressure
Unitsdesignedapressuremeasuringandswitchunits(codeD),onlyhaveone
connectionadapteronthe(+)side.Thisislocatedontherearorbelowtheunit
dependingontheassemblytype.
Connectingshanks
rear
below
Illustration7:Dischargeport
Thedifferentialpressurelinesmustbeinstalledataninclinationsothatwhen
fluidsaremeasurednoairpocketsarecreatedorwhenmeasuringgases,no
waterpocketsarecreated.Iftherequiredinclinationisnotreached,waterorair
filtersmustbeinstalledatsuitableplaces.
Thedifferentialpressurelinesmustbekeptasshortaspossibleandinstalled
withoutanytightbendstoavoiddelays.
Inthecaseoffluidmeasuringmedia,thedifferentialpressurelinesmustbe
ventedbecausedifferentfluidcolumnsinthelineswilldistortthemeasure
ments.
Ifwaterisusedasameasuringmedium,theunitmustbeprotectedagainst
frost.
3.4.1 Installationregulationsforflowguardsinheattransferunitsin
compliancewithDIN4754
InthecaseofdifferentialpressuretransducersincompliancewithDIN1952/
VDI2041,themeasurementmustbesetupincompliancewithVDE/VDI3512,
sheet1.
Shutoffvalvesindifferentialpressurelinesmayonlybeactivatedwithtools.
Threadedscrewconnectionsintheselinesmustbedesignedsothattheyre
maintightwithoutanysealingagent,ortheconnectionmustbeweldedorhard
soldered.
Thecleardiameterandlengthofdifferentialpressurelinesmustbedimen
sionedsothatwenthelineiscold(approx.20°C),theresponsetimeoftheunit
isnolongerthan5sec.
Differentialpressurelinesmustbemadeofmetal.Theirclearwidthmaynotun
dercut4mmandthestretchedlengthmustbeatleast500mm.Ifarrangedwith
blockvalves,thedifferentialpressurelinebetweenthevalveblockanddifferen
tialpressuretransducermustbeatleast500mm.
3 | Installation and assembly FISCHER Mess‐ und Regeltechnik GmbH
14 / 48 BA_EN_DS21_H_ST4‐A
Lockingandunlockingconditionsmustbeensuredduringinstallationviathe
followingelectricallines.
3.4.2 Installationregulationsforflowlimitersinsteamboilersandhot
watersystems
DifferentialpressuretransducersincompliancewithDIN1952/VDI3212,sheet
1,ItabaorAnnubarprobesmustbeusedasmeasuringelements.Ifadifferen
tialpressuretransducersincompliancewithDIN1952/VDI2041isused,the
measurementmustbesetupincompliancewithVDE/VDI3212,sheet1
Itmustbepossibletoblockthedifferentialpressurelineswitha5xvalveblock
infrontofthedifferentialpressureunitandmustbedesignedtoallowblowout.
Shutoffvalvesindifferentialpressurelinesmayonlybeactivatedwithtools.
Threadedscrewconnectionsintheselinesmustbedesignedsothattheyre
maintightwithoutanysealingagent,ortheconnectionmustbeweldedorhard
soldered.
Thedifferentialpressurelinesmustbemadeofmetalandhaveaclearwidthof
atleast8mm.Thestretchedlengthofthedifferentialpressurelinesmustbeat
least500mm.
3.5 Electricalconnections
▪ Byauthorizedandqualifiedspecializedpersonnelonly.
▪ Whenconnectingtheunit,thenationalandinternationalelectrotechnical
regulationsmustbeobserved.
▪ Disconnectthesystemfromthemains,beforeelectricallyconnectingthe
device.
▪ Installtheconsumeradaptedfuses.
▪ Donotconnecttheconnectorifstrained.
WARNING Operationinareasatriskofexplosion
Ifoperatedinexplosiveareas,theelectricaldataoftheunitandthevalidlocal
regulationsandguidelinesfortheinstallationandoperationofelectricalsystems
inexplosiveareasmustbeobserved(e.g.DINEN6007914)
Intrinsicallysafepowercircuits
Foruseinareasatriskofexplosion,thedevicemustbeconnectedtocertified,
intrinsicallysafepowercircuits.Thevaluehighestvaluesare:
max.voltage Ui= 30V
max.current Ii= 160mA
max.output Pi= 800mW
Theeffectiveinnerinductivitiesandcapacitiesarenegligible.Recommended
isolatingdevicesarestatedintheaccessoriessection.
Cablesocket
No Contact Switch
1 Makecontact NO
Switch1
2 Breakcontact NC
3 Joint COM
4 Joint COM
Switch2
5 Makecontact NO
6 Breakcontact NC
FISCHER Mess‐ und Regeltechnik GmbH Installation and assembly | 3
BA_EN_DS21_H_ST4‐A 15 / 48
No Contact Switch
Groundconnection
Lidscrew
Lid
Seal
Middlepart
Connectionterminals
Pressurescrew
Pressurewasher
Cuttingring
Clampingring
Groundterminal
Seal (viewfromabove)
Illustration8:Cablesocket
Formodelswithnumberedcables,thecablenumberscorrespondwiththe
presentedterminalnumbers.
GLversion
Inmodelswithoneswitch,acable(0.6/1KV4Gx1.5)withthefollowingcolor
codeisconnected:
Ter
minal
WireID
1 grey
2 brown
3 black
green/yellow
Inmodelswithtwoswitches,acable(0.6/1KV7Gx1.5)withnumbersforidenti
fyingthewiresmustbeconnected.Thenumbersofthecablecorrespondtothe
terminalnumbersofthecablesocket.
Outergroundterminal
Illustration9:Groundconnection
Theoutergroundconnectionmustalwaysbeconnectedtotheprotectivepo
tentialequalisationorasimilarlocalpotentialequalisation.Theconnectionis
suitableforconnectingfinewireconductorsupto4mm2orsinglewireconduct
orsupto6mm2.
4 | Commissioning FISCHER Mess‐ und Regeltechnik GmbH
16 / 48 BA_EN_DS21_H_ST4‐A
4 Commissioning
4.1 General
Theinstrumentmayonlybeinstalledandcommissionedbyspecializedperson
nelfamiliarwiththeinstallation,commissioningandoperationofthisproduct.
Specializedpersonnelarepersonswhocanassesstheworktheyhavebeen
assignedandrecognizepotentialdangersbyvirtueoftheirspecializedtraining,
theirskillsandexperienceandtheirknowledgeofthepertinentstandards.
Ifunitsareusedinpotentiallyexplosiveareas,thepersonnelmustreceiveaddi
tionaltrainingorbriefingsorhaveapermittoworkionexplosionprotectedunits
inpotentiallyexplosivesystems.
Aprerequisiteforcommissioningiscorrectinstallationofallelectricalsupply
linesandthedifferentialpressurelines.Allconnectionsarearrangedsothat
therearenomechanicalforcesactingonthedevice.
CAUTION Leaktest
Thedifferentialpressurelinesneedtobecheckedforleaksbeforecommission
ing.
4.2 Safetyinformation
Theinstrumentmustbedecommissionedandsecuredagainstinadvertentre
operationifasituationarisesinwhichitmustbeassumedthatsafeoperationis
nolongerpossible.
Reasonsforthisassumptioncouldbe:
▪ Evidentdamagetotheinstrument
▪ Failureoftheelectricalfunction.
▪ Storageintemperaturesover85°Cforalongperiod.
▪ Considerablestrainduetotransport
WARNING Recommissioning
AprofessionalsingleconformityinspectionasperDINEN61010,section1,
mustbecarriedoutbeforetheinstrumentcanberecommissioned.Thisinspec
tionmustbeperformedatthemanufacturer'slocation.Correcttransportand
storageoftheinstrumentarerequired.
Repairsmaybecarriedoutbythemanufactureronly.
4.3 Displayandcontrolelements
Theillustrationshowsanexamplebecausethemeasurementscaleandthere
forealsothereferencevaluescaledependontherespectivemeasuringrange.
Thepositionandformofthecontrolelementsareatleastsimilartotheillustra
tion.
FISCHER Mess‐ und Regeltechnik GmbH Commissioning | 4
BA_EN_DS21_H_ST4‐A 17 / 48
Switchpointsetting
Switch1
Switchpointsetting
Switch2
Settingscrewforthe
zeropointcorrection
Standard
valuescale
MeasurementscaleMeasurementdisplay
Illustration10:Controlelements[DS21]
4.4 Leadseal
Itispossibletosecuretheunitagainstremovalandadjustmentoftheswitch
pointsbymeansofaleadseal.Thissealmaynotberemoved.Thedevicecan
besealedonsiteorexworks.Inthelattercase,thedeviceissuppliedwitha
presetting.Afterthis,itisnolongerpossibletoadjusttheswitchpointsettingor
correctthezeropoint.
4.5 Zeropointcorrection
1. Loadthepressuechamberwiththeexistingstaticsystempressure.
2. Opentheunitbyremovingthebayonetringandthefrontdisk.Usea
wrenchtomountorremovethebayonetringtopreventdamagetothecas
ing.
3. Setthemeasurementdisplaywiththesettingscrewforcorrectingthezero
pointtothezeropointofthemeasurementscale.
4. Closetheunit.
4.6 Switchpointsetting
1. Opentheunitbyremovingthebayonetringandthefrontdisk.Usea
wrenchtomountorremovethebayonetringtopreventdamagetothecas
ing.
2. Useascrewdrivertosettherequiredswitchpointsincompliancewiththe
markingsonthestandardvaluescale.
3. Closetheunit.
4 | Commissioning FISCHER Mess‐ und Regeltechnik GmbH
18 / 48 BA_EN_DS21_H_ST4‐A
NOTICE Settingaccuracy
Theachieveablesettingaccuracywiththestandardvaluescaleis±5%.
Ahigherlevelofprecisioncanonlybeachievedusingsuitableunitssuchas
testmanometers,ohmmetersetc.Optionally,thesedevicescanbepreinstalled
exworks.
4.7 Functiontest
Opentheunitbyremovingthebayonetringandthefrontdisk.Useawrenchto
mountorremovethebayonetringtopreventdamagetothecasing.
Iftheunithastwoswitchpoints,thestatedteststepsmustbecarriedoutfor
bothswitches.
Afterthetest,theswitchpointsneedtobereset(seeabove).
NOTICE Leadseal
Itispossibletosecurethebayonetringagainstremovalbymeansofalead
seal.Thissealmaynotberemoved.Afunctiontestcanonlybecarriedoutin
thiscasebysettingtheoperatingpressure(seebelow).
4.7.1 Checkingtheswitchpointsinadepressurizedstate
Nomeasurementisshownandthemeasurementdisplaypointtozero.
Turntheswitchpointsettingbuttontowardthezeropointuntilthemicroswitch
isactivated.
4.7.2 Checkingtheswitchpointswhenthesystemisoperational
Ameasurementisshown.Ifdespiteoperationalpressure,nomeasurementis
shown,youcangenerateadifferentialpressurebyblockingthedifferential
pressurelineononeside.
Turntheswitchpointsettingbuttontowardthemeasurementuntilthemicro
switchisactivated.
4.7.3 Checkingtheswitchpointsbychangingtheoperartionalpressure
Iftheunitissealedortheswitchpointsettingcannotbechangedforanyother
reason,youcancarryoutafunctiontestbychangingtheoperationalpressure.
Setthedifferentialpressuresothatthemicroswitch(es)areactivated.
FISCHER Mess‐ und Regeltechnik GmbH Maintenance | 5
BA_EN_DS21_H_ST4‐A 19 / 48
5 Maintenance
5.1 Safetyinformation
Theinstrumentmustbedecommissionedandsecuredagainstinadvertentre
operationifasituationarisesinwhichitmustbeassumedthatsafeoperationis
nolongerpossible.
Reasonsforthisassumptioncouldbe:
▪ Evidentdamagetotheinstrument
▪ Failureoftheelectricalfunction.
▪ Storageintemperaturesover85°Cforalongperiod.
▪ Considerablestrainduetotransport
WARNING Recommissioning
AprofessionalsingleconformityinspectionasperDINEN61010,section1,
mustbecarriedoutbeforetheinstrumentcanberecommissioned.Thisinspec
tionmustbeperformedatthemanufacturer'slocation.Correcttransportand
storageoftheinstrumentarerequired.
Repairsmaybecarriedoutbythemanufactureronly.
5.2 Wartung(maintenance)
Theunitismaintenancefreeapartfromregularcleaningofthesurfaceofthe
casing.
WARNING Dustdeposits
Thecasingoftheunitmustbecleanedregularlywithadampclothtoprevent
heataccumulation,asthiscanleadtothesurfaceoversteppingthemaximum
allowedtemperature(T70°C).Thecleaningfrequencydependsontheamount
ofdustinthelocation.
Toensurereliableoperationandalongservicelife,werecommendcarryingout
thefollowingtestonaregularbasis:
▪ Checkthereading.
▪ Checkingtheswitchfunctioninconnectionwiththedownstreamcompon
ents.
▪ Checkingthedifferentialpressurelinesforleaks.
▪ Checkingtheelectricalconnections(terminalconnectionofthecable).
Theprecisetestcyclesandoperatingandambientconditionsneedtobeadjus
ted.Ifseveralcomponentsoftheunitinteract,alloperatinginstructionsofthe
otherunitsalsoneedtobeobserved.
5.3 Transport
Themeasuringdevicemustbeprotectedagainstimpacts.Itshouldbetrans
portedintheoriginalpackagingorasuitabletransportcontainer.
5.4 Service
Alldefectiveorfaultydevicesshouldbesentdirectlytoourrepairdepartment.
Pleasecoordinateallshipmentswithoursalesdepartment.
5 | Maintenance FISCHER Mess‐ und Regeltechnik GmbH
20 / 48 BA_EN_DS21_H_ST4‐A
WARNING Processmediaresidues
Processmediaresiduesinandondismantleddevicescanbeahazardto
people,animalsandtheenvironment.Takeadequatepreventivemeasures.If
required,thedevicesmustbecleanedthoroughly.
Returnthedeviceintheoriginalpackagingorasuitabletransportcontainer.
5.5 Accessories
Recommendedisolatingunitamplifier
AllisolatingamplifiersstatedbelowareformountingonTS35rails.
▪FFA6SR2Ex1.W
Art.No.05003042
– 230VAC±10%
– 1channel
– ControlpowercircuitEExiaIIC
– Reversibledirectionofaction
– 1relayoutpoutwith1converter
– LB/LKmonitoring
– CanbeuseduptoSIL2incompliancewithIEC61508
▪KFASR2Ex2.W
Art.No.05003043
– 230VAC±10%
– 2channel
– ControlpowercircuitEExiaIIC
– Reversibledirectionofaction
– 2relayoutputswith1converterperchannel
– LB/LKmonitoring
– CanbeuseduptoSIL2incompliancewithIEC61508
▪TS500Exia1R5
Art.No.05003065
– 24VDC±15%
– 1channel
– Controlpowercircuitintrinsicallysafe
ATEXII(1)G[Exia]IIC/IIB
ATEXII(1)D[ExiaD
– Reversibledirectionofaction
– 1relayoutpoutwith1converter
– LB/LKmonitoring
▪TS500Exia2R5
Art.No.05003066
– 24VDC±15%
– 1channel
– Controlpowercircuitintrinsicallysafe
ATEXII(1)G[Exia]IIC/IIB
ATEXII(1)D[ExiaD
– Reversibledirectionofaction
– 2relayoutputswith1converterperchannel
– LB/LKmonitoring
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Fischer DS21xxxH series Operating instructions

Fischer
Brand
Fischer
Model
DS21xxxH series
Type
Operating instructions
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