Zenner WSD - Permissible Installation Positions

3
Installation manual
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TheWSserieshasbeenapprovedwithaowsensitivityclassU0/D0.
However,toachievethebestmeasurementresults,werecommend
observingnationalregulationsandrecognisedrulesoftechnology.
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ForWSseriesisrecommendedastraightinletsectionofatleast5xDN.
Ifthereisnosuicientinletsectionbepresent,orbehindpipeelbow,
werecommendtouseahoneycombrectierfromZENNER.
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Ideally,atleast2xDNshouldbeavailableastheoutletsection.
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Beforeinstallingthemeter,thepipingmustbethoroughlyushedout.
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Thepipediametershouldnotbereduced,directlyinfrontandbehind
themeter.
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Flangegasketsmustnotextendintothepipe.
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Itmustbeensuredthattheowdirectionofthemetermatchesthatof
thepipe.
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Valvesorotherowregulatorsshouldbeinstalled,wherepossible,
behindthemeter.
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Themetershouldbeinstalled,wherepossible,atthehighestpointofthe
pipeinstallationsothatairbubblesarenotabletoforminthemeterand
thepipeisalwayscompletelylled.
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Ifnecessary,themetershouldbeprotectedbyacorrespondinglter,
sothatnoforeignparticles,suchasstonesorsand,areushedintothe
measuringinstrumentandcausedamage.
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Themetermustbeprotectedagainstpressuresurgesinthepipe
network.
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Themaximumwatertemperaturemustnotexceedthepermissible50°C
forcoldwater.
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Inordertopreventdamagetothemeasuringinsertcausedbypressure
surges,thepipemustbeslowlylledfollowinginstallation.
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Itmustbeensuredthatthemeterisinstalledinade-energisedstatein
thepipe.Inthecaseofaninstallationthatisnotde-energised,thehous-
ingofthemeasuringinstrumentcanbedamagedandwatermayescape.
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Thepipelinepressuremustnotexceedthemaximumworkingpressure
ofthemeter,asthiscanleadtoleaksanddamageofthemeter.
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Topreventthedisassemblyofthemeterwerecommendtosecurethe
connectioninterfacewithasafetydevice(adhesivelabel,seal,etc.).
Installation instructions for the replacement of the metrological unit
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Theexchangeofexchangeablemetrologicalunits(measuringinsert
shouldonlybeperformedbytrainedspecialiststa.
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Beforechangingthemeasuringinsert,thepipemustberinsedcarefully
shutothepressuresideandemptythepipe.
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Thecomplianceoftheinterfacesmarkingonthemeasuringandatthe
speciedinterface(body)(WS1)mustbechecked.
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Aerdisassemblyofthemeasuringinsertoldgaskets/sealsmustbe
removed.Thesealingsurfacesmustbecleanedandcheckedfordamage.
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Itisimportanttoensurethattheinletareaisfreeofdeposit,beforea
newmetrologicalunitisinstalled,becauseasthesecanleadtodevia-
tionsofthemeasurementresult.
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Useonlythegenuineseals,whicharedeliveredtogetherwiththemea-
suringinsert.Thesehavetobecheckedpriortoinstallationfordamage
andt.
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Whenusinglubricants/assemblypastese.g.fortheseals,itmustbe
ensuredthatthesearesuitableforcontactwithdrinkingwater.
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Tightenthescrewsofthemeasuringunitevenlycrosswise(M12:DN50–
DN100=60Nm;M20:DN150–DN200=100Nm).
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Topreventthedisassemblyofthereplacablemeasuringinsert,itmust
beconnectedwiththeconnectioninterface(housing)byasealingwire.
Thedeclarationofconformityisincludedinthedelivery.Thelatestinforma-
tiononthisproductcanbecalledupfromwww.zenner.com
Technical data
Nominal diameter DN mm 50 50 65 80 80 100 150 200
Permanent Flowrate Q
3
m³/h 25 40 40 63 63 100 250 400
Standard measuring
range
1
Q
3
/Q
1
R R100H
Operating pressure, max. MAP/PN bar 16 16 16 16 10 16 16 16
Pulse value Reed l/pulse 100 100 100 100 100 100 1000 1000
Pulse value
of the modulator disc
l/pulse 10 10 10 10 10 10 100 100
Total height approx.
2
mm 228 228 238 292 292 309 416 525
Installation height of the
measuring unit
mm 270 270 270 370 370 382 557 743
Weight approx. kg 13 13 18 21 21 24.4 57.6 94.3
1
Othermeasuringrangesandoveralllengthsonrequest.
2
TotalheightWSDE+18mm
Remark
Thisinstallationmanualisintendedforqualiedspecialistsonly.Basic
installationstepsarethereforenotdescribed.
Permissible installation positions
TheWSseriesisintendedforinstallationinthehorizontalpositiononly.
English
Subjecttotechnicalmodications.Weacceptnoliabilityforanyerrorsormisprints.
ZENNER International GmbH & Co. KG
Römerstadt6|66121Saarbrücken|Germany
Phone +4968199676-30
Fax +4968199676-3100
E-Mail info@zenner.com
Internet www.zenner.com