3
Installation manual
■
TheWSserieshasbeenapprovedwithaflowsensitivityclassU0/D0.
However,toachievethebestmeasurementresults,werecommend
observingnationalregulationsandrecognisedrulesoftechnology.
■
ForWSseriesisrecommendedastraightinletsectionofatleast5xDN.
Ifthereisnosufficientinletsectionbepresent,orbehindpipeelbow,
werecommendtouseahoneycombrectifierfromZENNER.
■
Ideally,atleast2xDNshouldbeavailableastheoutletsection.
■
Beforeinstallingthemeter,thepipingmustbethoroughlyflushedout.
■
Thepipediametershouldnotbereduced,directlyinfrontandbehind
themeter.
■
Flangegasketsmustnotextendintothepipe.
■
Itmustbeensuredthattheflowdirectionofthemetermatchesthatof
thepipe.
■
Valvesorotherflowregulatorsshouldbeinstalled,wherepossible,
behindthemeter.
■
Themetershouldbeinstalled,wherepossible,atthehighestpointofthe
pipeinstallationsothatairbubblesarenotabletoforminthemeterand
thepipeisalwayscompletelyfilled.
■
Ifnecessary,themetershouldbeprotectedbyacorrespondingfilter,
sothatnoforeignparticles,suchasstonesorsand,areflushedintothe
measuringinstrumentandcausedamage.
■
Themetermustbeprotectedagainstpressuresurgesinthepipe
network.
■
Themaximumwatertemperaturemustnotexceedthepermissible50°C
forcoldwater.
■
Inordertopreventdamagetothemeasuringinsertcausedbypressure
surges,thepipemustbeslowlyfilledfollowinginstallation.
■
Itmustbeensuredthatthemeterisinstalledinade-energisedstatein
thepipe.Inthecaseofaninstallationthatisnotde-energised,thehous
-
ingofthemeasuringinstrumentcanbedamagedandwatermayescape.
■
Thepipelinepressuremustnotexceedthemaximumworkingpressure
ofthemeter,asthiscanleadtoleaksanddamageofthemeter.
■
Topreventthedisassemblyofthemeterwerecommendtosecurethe
connectioninterfacewithasafetydevice(adhesivelabel,seal,etc.).
Installation instructions for the replacement of the metrological unit
■
Theexchangeofexchangeablemetrologicalunits(measuringinsert
shouldonlybeperformedbytrainedspecialiststaff.
■
Beforechangingthemeasuringinsert,thepipemustberinsedcarefully
shutoffthepressuresideandemptythepipe.
■
Thecomplianceoftheinterfacesmarkingonthemeasuringandatthe
specifiedinterface(body)(WS1)mustbechecked.
■
Afterdisassemblyofthemeasuringinsertoldgaskets/sealsmustbe
removed.Thesealingsurfacesmustbecleanedandcheckedfordamage.
■
Itisimportanttoensurethattheinletareaisfreeofdeposit,beforea
newmetrologicalunitisinstalled,becauseasthesecanleadtodevia
-
tionsofthemeasurementresult.
■
Useonlythegenuineseals,whicharedeliveredtogetherwiththemea
-
suringinsert.Thesehavetobecheckedpriortoinstallationfordamage
andfit.
■
Whenusinglubricants/assemblypastese.g.fortheseals,itmustbe
ensuredthatthesearesuitableforcontactwithdrinkingwater.
■
Tightenthescrewsofthemeasuringunitevenlycrosswise(M12:DN50–
DN100=60Nm;M20:DN150–DN200=100Nm).
■
Topreventthedisassemblyofthereplacablemeasuringinsert,itmust
beconnectedwiththeconnectioninterface(housing)byasealingwire.
Thedeclarationofconformityisincludedinthedelivery.Thelatestinforma
-
tiononthisproductcanbecalledupfrom
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
Othermeasuringrangesandoveralllengthsonrequest.
2
Totalhei18mm
Remark
Thisinstallationmanualisintendedforqualifiedspecialistsonly.Basic
installationstepsarethereforenotdescribed.
Permissible installation positions
TheWSseriesisintendedforinstallationinthehorizontalpositiononly.
English
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ZENNER International GmbH & Co. KG
Römerstadt6|66121Saarbrücken|Germany
Phone
+4968199676-30
Fax
+4968199676-3100
Internet www.zenner.com
