Flowmeter SVTU-11B User manual

WatermeterSVTU-11B
Operatingmanual
SMP.407251.010 Э
(Part1)
September 2010

3
Documentation:
1. OperatingmanualSMP407251.010 OM part1.
2. OperatingmanualSMP.407251.010 OM part2. Verificationmethodology.
Tableofcontents
1Preface.......................................................................................................................6
2Assignment.................................................................................................................6
3Technicalspecifications.............................................................................................6
4Packagecontents......................................................................................................12
5Meter’s structureandfunctioning.............................................................................15
6Markingand sealing.................................................................................................18
7Packingandmarking................................................................................................18
8Safetyprecautions....................................................................................................19
9Installation................................................................................................................20
9.1 Unpackingand degreasing.............................................................................20
9.2 Installationrequirements...............................................................................20
9.3 Requirements toFSinstallationandarrangement..........................................21
9.4 Installationofmetercomponentry.................................................................22
10 Setting-upProcedures...............................................................................................32
11 Theoperatingprocedure...........................................................................................35
12 Servicing..................................................................................................................38
13 Typicalfaultinesses andmethods oftheirelimination ..............................................42
14 Storing......................................................................................................................45
15 Transportation..........................................................................................................45
16 Guarantee ofmanufacturer.......................................................................................45
Appendix Meterdesignation......................................................................................47
AppendixB Schematiccircuits formeterinstallations..................................................48
AppendixC Overallandconnectingdimensions ofcalculator......................................49
AppendixD Menuofcontrolofthemeter....................................................................50
AppendixE Examples ofreports, creatingby“SempalDM”software..........................58
AppendixF Schematicofdevice cable.........................................................................60
AppendixK Theschemeofpressuresensormounting..................................................63
AppendixL OverallandconnectingdimensionsforFS...............................................64
AppendixM Howtosethydrauliczero.........................................................................67

4
Abbreviationlist
OM –operatingmanual.
FS –flowmeasurementsectionwithultrasonicflowsensors FlS.
RТD–resistivetemperaturedetector.
RTD–T–platinumresistivetemperaturedetectormanufacturedbySEMPALCo.
NSCRТD–nominalstaticcharacteristicofRТD.
FlS–flowsensor.
TS–temperaturesensor.
PT–pressuretransducer.
DN –nominaldiameter.
N–nominaloverpressure.
PC–personalcomputer.
RDU –datareader.
–digitonthedevice display.

5
Informationforcustomers
SVTU-11Bwatermeters(hereinafterreferredtoasmeters)arecomplexmeasuringde-
vices, whichshouldundergo thestarting-upand adjustmentworksbyqualifiedpersonnel
duringcommissioning.
Manufacturer's guarantees (48 months sinceshipment)extendonthemeters which
wereputintooperationbythespecializedenterprises having correspondingcredentials from
company-manufacturer. Moredetailedinformationis resultedinsection16 ‘Manufacturer’s
Guarantee’.
Arecalibrationintervalis no morethan4years.
TheQualitySystemofSEMPALis certificatedunder ISO9001:2000.
Ifyouhaveanyquestionsaboutpurchase,maintenance,operationandservice ofme-
ters, contactus orourauthorizedregionalrepresentatives.
“SEMPALCoLТD”contacts:
3KulibinaStreet,Kyiv, 03062 Ukraine
Phone/fax:[phone].
http://www.sempal.com

6
1Preface
Thisoperating manual(hereinafterreferredtoasOM)containsthefollowing informa-
tion:theassignment,fieldofapplication,performance capabilityandcompleteness, aprin-
cipleofoperationandadesign, themethod ofinstallationandcommissioning, themethodof
operationandmaintenance service ofmeters.
Whilemeters areinexploitation,itis necessarytobestrictlyguidedbypresentOM.
Constantlyworkingatfunctionalenhancement,improvementofperformance capability
andincreaseofmeterreliability,manufacturingcompany SEMPALCoLTDreservesthe
righttoitselftochangethemeterdesignwithoutclaimingit inpresentOM.
2Assignment
2.1 WatermetersSVTU-11Bareintendedformeasurementofthewatervolumeand
mass.
Metersalsomeasurethevolume,mass, temperatureandoverpressureofthewateror
fluidswithsolidparticlesofno morethan200 µmand residuemass ofno morethan
500 mg/l(hereinafterreferredtoas awater).
2.2 Metersareappliedformetering(including fiscalmetering)ofwatervolumeaccord-
ingtoactingrulesforthecontrolofsupplyandconsumptionofwateronindustrialobjects
andobjectsofmunicipalservices. Functionalfeaturesofmeters’configurationsaregivenin
3.5.
3Technicalspecifications
3.1 Watermeters canhavenextconfigurations:
−1–1-channelwatermeter;
−3–2-channelwatermeter(twoindependentwatermeters);
3.2 Metersdependingontheirpermissibleerrorlimitswhilemeasuring volumeand
mass ofthewaterarereleasedinthefollowingmodifications: М1and М2.
3.3 Metersofallmodificationsinaccordance withenvironmentalconditionsmeetclass
СofEN14341. Themeters canworkunderthefollowingconditions:
−atmosphericpressurecanvaryfrom84.0up to106.7kPa;
−relativeairhumidityis up to95 %.
3.4 Metersmeettherequirements ofEN1434.
3.5 Themeterconsists ofthefollowingfunctionalunits:
−flowmeasurementsections withultrasonicflowsensors (FS);
−resistivetemperaturedetectors (RТD);
−SVTU-11Bcalculator.
Highestpossiblenumberofmeasurementchannelsdependingonmeter’sconfiguration
isgiveninthetable3.1
Table3.1
Channel
Number of channels
Ultrasonic
flow measurement channel
2
Temperature measurement channel
3
Pressure measurement channel
2

7
Distinctivefunctionalfeaturesofmeterconfigurationsandbasicfunctionalunitsare
representedinthetable3.2(meters’configurationsindetails aregivenintheappendixB).
Table3.2
Distinctivestructural and functional features
Configuration
1
3
1
Number of FS
1
2
2
Number of RТD
1
2
Additionallythemetercanhaveoneortwooverpressuretransducers(furtherunderthe
text-pressuretransducersorPT),whichareusedfortransformationofthewateroverpres-
sureinaproportionalelectricsignalwithcurrentfrom4upto20 mA.
Metrologicalperformance ofpressuretransducers PTfits totheindividualorder.
3.6 Meters indicatetheresults ofmeasurements inSI unitsystem.
3.7 Measuredresults aredisplayedon2-sectionalLCD.
Thefirstsectionhas8-bit7-segmentindicatorwithspecialsymbols. Themeasuringda-
taarealways displayedinthis section.
Thesecondsectionhasonerow(onthetopoftheindicator)fordisplaying textinfor-
mation. This sectionis switchedononlyduringoperationwithkeyboard.
−Thecalculatorindicates thefollowingquantities:
−volume(mass)ofthewater,m3(ton);
−volumetricflowrateofthewater,m3/h;
−watertemperature, С;
−overpressureofthewater, МPа;
−worktimeandnon-worktime, hour;
−currenttime(hours, minutes, seconds)anddate.
3.8Thecalculatorprovidesstorageofsucharchivedata asmeasuredvaluesofvolume
(mass)ofthewater, worktimeand non-worktimeand alsoaveragemeasuredtemperatures:
perhour -during70 precedingdays (hourlyarchive);
perday -within1precedingyear(dailyarchive).
All storedinformationand measurableparameterscanbereadbystandardinterface
RS-232C.
3.9 Thenumberofdisplaydigits:
−forvolume(mass)ofthewateris 8;
−forvolumetric(mass)flowrateofthewateris 5;
−forwatertemperatureis 5;
−foroverpressureofthewateris 3;
−forworktime, non-worktime, andcurrenttimeis 7.
3.10 Theminimumbitvalueofdigitaldisplaywhileindicating:
−volume(mass)ofthewatercanvaryfrom10-7 upto1m3(from10-7 upto1ton);
−volumetric(mass)flowrateofthewatercanvaryfrom0.001 up to0.1m3/h(from
0.001 upto0.1ton/h);
−watertemperatureis 0.01 °C;
−overpressureofthewateris 0.01 МPа;

8
−worktimeandnon-worktimecanvaryfrom10-5 tо1hour;
−currenttimeis 1sec.
3.11 Metersprovidemeasurementsofvolume(mass)ofthewaterinrangesofvolume-
tricflowrates resultedinthetable3.3.
Thetablecontainsvaluesofthelowerlimitoftheflowrate(qi),permanentflowrate
(qp)and theupperlimit oftheflowrate(qs).
Table3.3
Flowmeasurement
sectionFS
Measurementrangeofthewater, m
3
/hour
qiqpqs
FS-20 0.05 56.5
FS-32 0.22 22 30
FS-50 0.7 70 90
FS-65 1.2 120 160
FS-80 1.8 180 230
FS-100 2.8 280 360
FS-125 4.5 450 580
FS-150 6.5 650 850
Thelowestmeasurablevolumetricflowrateisequalto0.5·qi.Iftheflowrateislower
thanqiflowratemeasurementerrorisnotstandardized.
3.12 Thetemperatureofthewatercanvaryinarangefrom0upto150 °С.
Themeasurementrangeofsecondary(notformass calculation)temperaturescanvary
from-49 °Сto150 °С.
Numberofchannelsfortemperaturemeasurementcanvaryfrom1tо3inaccordance
withtheorder.
3.13 Themaximalpressuremeasuredbythemeteris 4 МPа.
Therangeoftheelectricsignalsfrompressuretransducervariesfrom4upto20 mA.
3.14 Meters haveoutputsignalfordatacommunicationbystandardinterface RS-232C.
3.15 Meters’powersupplyisrealizedbybuilt-inlithiumbatteryof3.6V.Batterylife-
cycleis 5-6years. Batteryreplacementcanbedonedirectlyon-sitewithoutmetershutdown.
WARNING!Meteris deliveredwithswitchedoffbattery.
Whiledeliveringbyairtransportthebatteryshouldbeswitchedoff andremovedfrom
themeter.
3.16 Nominaldiameters(DN),overalldimensions andweightofFS, аndalsolengthand
weightofRТDdependingontheirtypeareshownintables 3.4, 3.5 andonFigure3.1.
Thenotice
1ItispossibletoincreasethetotallengthofFS duetothelengthofstraightsec-
tions beforeandafterplaces forinstallationofultrasonicflowsensors.
2DN isthedesignationofnominalbore,whichnumericalvalue isapproximately
equal tointernaldiameter ofattached pipesections.
3.17 Forconfigurations1and3inmodification М1watermetermeetsaccuracyclass 1,
inmodification М2watermetermeets toaccuracyclass 2inaccordance withEN1434.

9
Permissibleerrorlimitsforconfigurations 1and3whilemeasuringwatervolume:
−±(1+0.01∙qp/q)%foraccuracyclass 1;
−±(2+0.02∙qp/q)%foraccuracyclass 2;
whereqismeasuredflowratevalue,m3/h.
3.18 Limitsofpermissibleabsoluteerrorforwatermeterswhilemeasuring watertem-
peratureare ±(0.2+0.002⋅Θ) °Сwhere Θisnumericalvalueoftemperature.
3.19 Limits ofpressuremeasurementerror:
−±0.5%whenPTfrommeter’s setareused;
−
22
PT
0.2
±+δ
whencustomer's PTareused,
where δPT is permissibleerrorlimit ofcustomer's PT.
Specificcoefficients ofPTcurveareenteredintocalculator’smemory.
3.20 Thecalculatorhastwopassivepulseoutputs. Pulseoutputsmeettoclass OD inac-
cordance withEN1434.
Maximumswitchedvoltageshouldbenomorethan10 Vwhileswitchedcurrentisno
morethan10 mА.
Maximumpulse-repetitionfrequencyis 100Hzwhilepulsedurationis 4ms ±0.5ms.
3.21 Pulsesettings (setbyuser)arefrom1to9999999 pulse/unit. Where«unit»is unit of
measurefortransformedphysicalquantity.Theusercanselectfromthefollowingphysical
quantities:volume(pulse/m3),mass (pulse/ton).
3.22 Limitsofabsolutemetererrorwhilemeasuringtheworktimeandnon-worktime
are ±1minuteper24 hours.
3.23 Measurementinformationaboutwatervolume,worktimeandnon-worktimeis
storedinnonvolatilemeter’smemorywithin8years withpoweroff.
3.24 Themaximalwateroverpressureinsideflowmeasurementsectionis1.6 МPа
(16 kgf/cm2).
3.25 Timeformetercommissioning afterbatteryinstallationisnomorethan10 minutes
(batteryis switchedoffindeliveryset).
3.26 Protectionclass ofcalculatorenclosureis IP65.
3.27 Calculatormass is no morethan750 gram.
3.28 Calculatoroveralldimensionsdon’texceed170×110×35 mm,andwithdevicecon-
nectorand wallmountingaccessories –250×110×60 mm(see Appendix С).
3.29 Nominaldiameters(DN),overalldimensions, andFS weight,aswellaslengthand
weightofRTDdependingontheirtypeareshownintables 3.7, 3.8andinfigures 3.1,9.9.
3.30 Meanerror-free worktimeformetersisnotless than50 000 hours, forcalculators –
100 000 hours.
3.31 Totalaveragemeterlifecycleis notless than12 years.

10
Table3.4Types, dimensions andweightofRTD-T
RTDtypes Lengthinmm, nomorethan Weight, kg,
nomorethan
L
RTD
L
4 58 86 0.06
2 80 108 0.08
3 150 178 0.1
5 310 346 0.25
6 360 396 0.3
Thenotice.Selectthetypedepending onDN accordingtoinstructionsmentionedintables9.2,9.3
andinfigures9.8, 9.9,9.10
Mountingdimensions forRTDoftypes 2, 3, 4aregiveninFigure3.1.
Figure3.1
7
34
6
(1 pcs.)
9.7*
L
RTD
forsealing
Screwwithahole
20.5 L
(screwlocation
isundefined)
1
8
Hexahedrons=17mm
Plug УЗНЦ 05-7
M10x1.5 13

11
Table3.5Overallandconnectingdimensions, FSweight (fordrawingsseeAppendix L)
FS Nominaldi- ameter, mm
Nominaloverall andconnectingdimensionsofFS,
mm n,
pcs.
Weight, kg,not
morethan(nofasts)
DN
L
D
f
H
D
d
d1
ForFS
Forflanges
У
-
20
20
270
Pipe
. G1”
90
∅
20
-
-
-
2.3
2.7*
У
-
32
32
180
M48x2
79
∅
32
-
-
-
1.8
2.6*
У
-
50
50
180
∅
122
-
∅
50
∅
102
∅11
6
4.8
2.2
У
-
65
65
200
∅
144
-
∅
63
∅
124
5.8
2.9
У
-
80
80
210
∅
155
-
∅
79
∅
135
6.9
3.2
У
-
100
100
230
∅
184
230
∅
(95…105)**
∅
164
8
7.8
4.1
У
-
125
125
265
∅
210
270
∅
(119…131)**
∅
190
10
10.6
5.2
У
-
150
150
315
∅
236
296
∅
(143…156)**
∅
212
∅
13
20.0
7.7
*
Weightofstraightsectionswithscrews
.
** NominalboresD aremultipleof1mm

12
4Packagecontents
4.1 Themeterpackagecontents is representedinthetable4.1.
Table4.1 Nameand
reference designation Marking Number
Additional information
SVTU-11B,
including: SMP.407251.010 1pcs. Configuration and com-
pleteness in accordance
with the order (see items
1…8)
1SVТU-11BCalculator
withbattery SMP.408843.012 1pcs.While in delivery the bat-
tery is switched off
2Flowmeasurementsection
(FS)withscrews forflowsen-
sors fixing(noscrews incom-
pletesetforFS-20…FS-150)
Markingfor FS-20 to
FS-150 included –see
Table 4.2
See ad-
ditional
informa-
tion
Number, configuration
and dimension-type in
accordance with the order
(see Appendixes Aand
tables 4.2, 4.3)
3Ultrasonicflowsensor
(FlS) withfluoroplasticseal
ring(FlSforFS-20 aren’tdeli-
veredseparately.Flowmea-
surementsectionFS-20 is deli-
veredtogetherwithFlS)
SMP.407151.009
(forFS-32…80);
SMP.407151.011-01
(forFS-100);
See ad-
ditional
informa-
tion
Number of FlSfor one
FSis defined by number
of places for their instal-
lation in accordance with
the order (see table 4.2)
4Resistivetemperaturede-
tectorRTD-TSMP.405212.003-01
(−02, −03)
See ad-
ditional
informa-
tion
Number and configura-
tion (type) in accordance
with the order
5Overpressuresensors (PS) -
See ad-
ditional
informa-
tion
Number, type and com-
pleteness accordingto the
order. Complete set can
include elements indi-
cated in Appendix K
6Connectioncable(device
cable) SMP.685694.029 1pcs.Number of communica-
tion lines and their length
accordingto the order
(see Appendixes A)
7SVТU-11B. Watermeter
OperatingManual SМP.407251.010 Э 1 pcs.
8Packaging (set) SМP.323248.002 1set
9Modem Type is selected in coor-
dination with the custom-
er
Incoordination with the
customerwhile ordering
the МDМunit
10 DataReaderSpecial order
11 Adaptermodule МС-1 Special order

13
Nameand
reference designation Marking Number
Additional information
12 Protectionenclosure SMP.301538.006 Special order
13 SVTU-11B. Operatingma-
nual. Part2«Verificationme-
thodology»
SМP. 407251.010 Э2 1 pcs.Special order
14 Reservebelongings SМP.305653.001 Completeness and num-
ber is ordered
Notes
1FS is deliveredwithflanges andfasteners see table4.3.
2FS canbedeliveredwithstraightpipesections(lengthisup to25internaldiameters
ofthepipeline).Thespecifiedsectionscanbeweldedtoflangesifnecessary.Whileor-
deringstraightpipesectionsallnecessarymaterialsforinstallation(forexample,elec-
trodesforwelding, paint, sealingmaterials,etc.)canbedeliveredadditionally
3Reservebelongingscanincludeelementslistedinthetable4.1,table4.3,enclosure
oftheSVТU-11Bcalculator, aboardoftheSVТU-11Bcalculatoras itwas ordered.
4DataReadercanbedeliveredasapocketPC,laptop orasadedicateddevice RDU-
02. ModelofpocketPCorlaptop is selectedbycustomer.

14
Designationand basicparameters ofFSincompletesetareindicatedinthetable4.2.
(ForoutlinedrawingofFS see AppendixL)
Table4.2
FS DN,
mm Markingon FS Number of places
for flow sensors Marking
Nominalbore
Nominal
pressure
Singlebeamflowmeasurementsection
FS -20 20 DN 20
PN16
- FS -20
FS -32 32 DN 32
2
FS -32
FS -50 50 DN 50 FS -50
FS -65 65 DN 65 FS -65
FS -80 80 DN 80 FS -80
FS -100 100 DN 100 FS -100
У-125 125 DN 125 FS -125
У-150 150 DN 150 FS -150
Anothercomponentryincludedindeliverysetinaccordance withtheobligatoryorad-
ditionalorderarelistedinthetable4.3.
4.2 Meter’sconfiguration,FS type,connectingcables, numberofcommunications
channels and theirlengtharespecifiedwhileordering.Theformatofmeter’smarking isgiv-
eninAppendixA.
DescriptionofdesignfeaturesforFSandalsodrawings, mountingdimensionsarere-
sultedinAppendixK.
Warning!!!
IdentificationofFS standardsize isprovidedbymarkingofnominaldiameterDN on
FS body.
ThusnumericalvalueinFSreference designationmeetstoanumericalvalueinade-
signationofanominaldiameterDN (see table4.2).
Example:
−Marking“DN 32”putontheflowmeasurementsectionwithreference designation
FS-32.Nextelementofmarking “РN16”meansthatthisflowmeasurementsectionisin-
tendedforuseinheat-orwater-supplysystems withoverpressure1.6 МPа(16 kgf/сm2);
Table 4.3Componentryincludedindeliveryset
# Name Marking Assignment Number Setofdelivery
oblig
a-
tory
Special
order
1
Pipenipple
SMP
.752291.001
Connectionof FS
-
20 with
straightpipesection
2pcs. for
1FS
+
2
Pipenipple
SMP
.302661.002
Connectionof FS
-
32рwith
straightpipesection
+
3
Sleevenut
SMP
.758422.006
Mounting of FS
-
20
+
4
Sleevenut
SMP
.758422.001
Mounting of FS
-
32
+
5
Flange
SMP
.711154.013
-
01,013
-
03,
013-05(inaccordance withDN
ofFS)
Mounting of FS
-
50…80
+

15
6
Flange
SMP
.711154.004
-
03 …004
-
05
(inaccordance withDNof FS)
Mounting of FS
-
100
+
7
Gasket(paronite)
SMP
.754152.013
Sealingof flangesFS
-
20
2pcs. for
1FS
+
8
Gasket(paronite)
SMP
.754152.009
Sealingof flangesFS
-
32
+
9
Gasket(paronite)
SMP
.754152.007…007
-
16
Sealingof flanges
FS-50…100
+
10
RTDpocket
(L
RTD
=58mm,type4)
SMP
.753137.002
-
03
Protectionof theRТDfrom
hydraulicimpacts
1pcs. for
1RТD
+
11
RTDpocket
(L
RTD
=80mm,type2)
SMP
.753137.002
-
01
+
12
RTDpocket
(L
RTD
=150mm,type3)
SMP
.302634.002
+
13
Sealingring (fluoropla
s-
tic)
SMP
.754176.003
Sealingof RТDfortypes2,
3,4
+
14
Sealingring (fluoropla
s-
tic)
SMP
.754176.003
-
01
Sealingof RTDbushfor
types2, 3, 4
1pcs. for
1sleeve
+
15
Bush(forangle
α
=45º)
SMP
.723144.007
Installationof RТDfortypes
2,3,4withoutbush 1pcs. for 1RТD
+
16
Bush(forangle
α
=60º)
SMP
.723144.008
+
17
Bush(forangle
α
=90º)
SMP
.723144.009
+
18
Bush(forangle
α
=45º)
SMP
.723144.007
-
01
Installationof RТDbushfor
types2, 3, 4 1pcs. for 1sleeve
+
19
Bush(forangle
α
=60º)
SMP
.723144.008
-
01
+
20
Bush(forangle
α
=90º)
SMP
.723144.009
-
01
+
21
Connectingpipe(G1/2"x
1/4")
SMP
.716161.004
Forinstallationof pressure
sensor 1pcs. for
1PS
+
22
Gasket(paroniteorflu
o-
roplastic)
SMP
.754156.010
ForPS
+
23
Gasket(paroniteorflu
o-
roplastic)
SMP
.754156.010
-
01
Forthreaded
+
24
G
а
sket
SMP
.754156.001
Sealingof device
connector
1
pcs.
+
25
AB1000WLVSet:
-crampon n/a Mounting of theCalculator
2pcs.
+
-
corbel
2
pcs.
+
-
washer«star»
2
pcs.
+
-
screw М4(hex)
2
pcs.
+
Fixings:(threaddiameterdandbolt lengthLfittoholesinflangesand total
flange
thickness)
26
-
screw М3x10
Mounting of deviceconne
c-
tor
4
pcs.
+
27
-
washer
3
4
pcs.
+
28
Bolts А.(dxL).88.35.019
FS-50…100
In acco
r-
dance with
totalnumber
ofholesin
FS flanges
(see table
3.3)
+
29
Nuts А.(d).9.35.019
+
5Meter’sstructureandfunctioning
5.1 Theprincipleofflowmeasurementofwatervolumeisultrasonictime-of-flight. The
timeforthesoundtotravelbetweenatransmitterandareceiverismeasured.Thetimedif-
ference isproportionaltotheaveragefluidvelocityandflowratecorrespondingly.Theinte-
gratedmomentaryflowratevaluesgivetheinformationaboutwatervolumewhichhas
passedthrough FS.Themass iscalculatedasafunctionofvolumeanddensityoftheflow
depending onits temperature.
5.2 Watertemperatureismeasuredbyplatinumresistivetemperaturedetectorsinstalled
inappropriatepipes.

16
5.3 Flowratemeasuringprocess iscontinuous. Flowratemeasurementisoccurreda
fewtimespersecondand obtaineddataarestored.Reading ofstoreddataisoccurred1time
persecondtocalculatethequantityofwater.
Measurementcyclefortemperatureandpressureis onetimein10 sec.
Everymeasurementcyclelastsfor1sec andincludesmeasurementofwaterparame-
ters, as well as self-diagnostics ofthemeter.
5.4 Watermeters aredeliveredinfollowingconfigurations (see AppendixB):
−1–1-channelwatermeter;
−3–2-channelwatermeter;
SchemesforsensorsconnectionindifferentconfigurationsarerepresentedinAppen-
dixB.
5.5 Calculationand storageofaveragetemperaturevaluesthemetercarriesoutas
arithmeticmeanforsetperiod oftime(hourorday).
5.6 Themetercarriesoutflowmeasurementintherangefrom0.5qi(qmin)tillq
s
(see table3.2).
Forall types ofFSmeasurementerrors areprovidedinarange[qi (qmin);qs], butinsub-
ranges[0.5.qi(qmin);qi(qmin)[ thementionedmeasurementerrorsarenotstandardized,how-
everdevice workingcapacityis kept, andwatermass storingandcalculationarecarriedout.
Whilemeasuringinstantaneousflowratevalues .q <0.5qi (qmin)thedevice indicates
zeroflowand mass storing m=q⋅ρisn’tcarriedout.
5.7 Measurementofwateroverpressureiscarriedoutbycalculatorwhilemeasuringthe
currentofelectricsignalfromthepressuretransducer.Overpressurevalues op (MPa),
measuredand displayedbythecalculator,andcurrentIin (mA)onaninputofpressuremea-
suringchannel(onthecalculatorinput)areconnectedbyafollowingratio:
21
opmeas11
21
(PP)
P(II)P
(II)
−
=−⋅+
−(5.12)
whereP
1
andP2arepressurevaluesintwopointsofpressuretransducercharacteristic
(forexample,minimalandmaximumpressure);
I
1
andI2arecorrespondinglycurrentsonthePToutputsintheabovespecified
points;
U
meas is valueofmeasuredcurrentontheoutputofPT.
5.8 Whilemeasuringtimeparametersthemetercarriesoutmeasurementoffollowing
quantities:timeofcorrectwork(running orworktime),timeofincorrectwork(timeofer-
rors),powerontime,poweroff time(non-workoridletime),andalsodisplayscurrent
date/time(takingintoaccountdaylightsaving).
Timeofcorrectwork(runningtime Тrun orworktime) –device operating time
(poweron,noerrormessages).Timeofcorrectworkon1-stand 2-nd channelsisdisplayed
on thewatermeterindicatorinamode «Indicationofadditionalparameters» (see item
11.2.2, table11.3ofthis Manual, andalsoAppendixD).
Timeofincorrectwork (timeoferrorsTerr) –device operating time(poweron,
thereareerrormessages). Тerr valuesarepresentedinprintoutsofstoreddataarchivesand
errorarchives.

17
Power ontime Тpower –totaltimewhenthedevice powersupplyvoltageison.Itis
indicatedonthemeterdisplayinamode “Indicationofadditionalparameters” and alsois
presentedinadailyarchiveprintout.
Power off time (idletime Тidleornon-worktime) –totaltimewhenthedevice pow-
ersupplyvoltageisoff.Itisdisplayedonthemeterindicatorinamode «Indicationofad-
ditionalparameters», andalsoincludedindailyreport.
Currentdate/time –currenttime(taking intoaccountdaylightsaving).Itisindicated
onthemeterdisplayinamode “Indicationofadditionalparameters”. Automaticswitch
todaylightsaving timemodecanbe on/off.
Measurement,indicationandregistrationofabove-listedparametersarecarriedoutin
hours. Infigure5.1thetiming sheetisrepresented.Itexplainshowtimeofcorrectwork
Тrun andtimeofnon-working condition Тnw foraccounting period Тacc areresulted. Dur-
ing Тrun authenticmeasurementofall parameterswasmade,during Тnw thereisnoregis-
trationofanyparameterorthereis no powersupplyvoltage(batterydisconnected).
Figure5.1
5.9 ToconnecttoexternaldevicesRS-232Cis applied.RxD,TxD,DTR,RTSlinesare
used.
5.10 Metershaveafewseparatemoduleswhichconnectedbetweenthemselves. They
arecalculator,temperaturesensors, flowmeasurementsectionwithultrasonicflowsensors,
pressuretransducers.
5.10.1 Thecalculatorhousing hasfourcontrolbuttons, thedigitaldisplay,slotforcon-
nectingcable.
Watermetercontrolbuttons aredescribedinchapter11 andAppendixD.
5.10.2 Meter’sdigitaldisplayhastwosections. Thefirstonecontainsa8-bit7-
segmentindicatorandspecificsymbols. Inthissectionthemeasuringdataandunitsaredis-
played.Thesecond sectionisarowfordisplaying textinformation.Itisarrangedintheup-
perpartofindicator.Thissectionisenablediftheuserneedstosee additionalinformation
andcompletesomekind ofactions indevicemenu.
Thebasicworking modeofthemeteris displaying measuring datafrommainmenu. At
this timethesecondsectionis switchedoff.
5.10.3 FS isaspoolpiece withflangesand bushesformountingultrasonicflowsen-
sors. FS sizes(linearandangular) haverigidtolerancestoachieverequiredmeasuringaccu-
racyandstabilityinoperation. Sizes areresultedinthetable4.2, andalsointheAppendixL.
Тrun
Тpower
Тidle
Тerr
Тnw
Тacc

18
5.10.4 RТDareinstalledinpipelinesinspecialthermometerpocketsorbushes(inac-
cordance withtheorder)ontheflowand returnpipes ofheatexchangesystem.
5.10.5 Thelengthofconnectingcablesisdeterminedaccording toalay-outofmeter
components and canbewithinthelimits:
−from2to10 m(max30 m)forultrasonicflowsensors,
−from2to10 m(max30 m)fortemperaturesensors,
−from2to10 m(max30 m)forpressuresensors,
−from2to30 m(max50 m)forRS-232 interface.
Extendingcablelengthup valuesinsquares possibleonlybyadditionalagreement.
6Markingand sealing
6.1 Metermarkingonthecalculatorcontains thefollowingdata:
−nameandreference designationofwatermeters;
−trademarkofthemanufacturer;
−accuracyclass (meter’smodifications М1or М2);
−environmentalclass;
−serialnumber;
−dateofmanufacture(twolastdigits ofayear, printedbeforeserialnumber).
Ontheindicating device ofwatermeters:
−flowratelimit values.
Ontheflowmeasurementsection:
−nominalbore;
−flowdirectionarrow;
−maximumoperatingpressure.
Serialnumbers ofRТDandFSareputontheirbodies.
6.2 FS marking containsnominaldiameterDNandmaximaloperationaloverpressure
value N.
6.3 Metercomponentsaresealedup topreventanon-authorizedaccess toadjustment
ofmeter’s readings.
6.4 Thecalculatorissealedupbytwomasticseals. Sealsareputonfixing screwson
lateralcovers. Formasticfixingsealingcups areprovidedunderscrewheads.
Forrealizationofadditionalsealingbymeansofaleadseal,thescrewswithholesin
headsonlateralcoversarestipulated.Oncustomer’sdemandthereplacementofthese
screws byadditionalsealingcups is possible.
Markingofconnectingcables areputonlabelslocatednearcorrespondingconnectors.
7Packingand marking
7.1 Markingoftransportcontainerhasspecificinstructions"CAUTIOUSLYFRA-
GILE", “PROTECTFROM MOISTURE”,"TOP".
7.2 Metercomponentsarepackedintotheboxesinaccordance withdrawings ofmanu-
facturer.

19
IncoordinationwiththecustomerFS deliverywithouttransportcontainerorincustom-
er’s containeris possible.
8Safetyprecautions
8.1 Meter’sdesignmeetstosafetyprecautionsinaccordance withStateStandard
GOST12.2.003.
8.2 Ifmeterrunstogetherwithequipmentof220Vpowersupply,thensafetyrequire-
ments forworkwithelectricalinstallations(voltageupto1000V)shouldbeconsidered.

20
9Installation
9.1 Unpackingand degreasing
Unpacking anddegreasingofmetersarecarriedoutaftertheirbeingindoorswithin2
hours, whileambienttemperaturevariesfrom10 up to30 Сand relativehumidityis nomore
than80 %.
Tomakeunpacking, pleasefollowtheinstructions:
−openpackingboxes;
−takeapackagewiththecalculatorand operationaldocumentation;
−checkupcompleteness ofmetersinaccordance withtheorder;
−takemetercomponentsfrompackingboxes, makeanexternalsurveyand becon-
vincedthatthereisnomechanicaldamages, coatinginfringementsandisolationofconnect-
ingcables.
Batteryinstallationintocalculatorshouldbedoneas follows:
−unscrewfourscrews, whichfixacoverofbatterymodule;
−connectabatterytoacalculatorboardinaccordance withthefigure12.1;
−carefullyputabatteryintoamodule,batterycableshouldbelocatedrightinsidea
module;
−closeacoverofmoduleandtightenitupbyscrews.
Waitforappearance ofanotice “battery”ontheindicator.
Setcurrenttime. Proceduretosettimeis describedinAppendixD.
9.2 Installationrequirements
9.2.1 Installationofmetercomponentsiscarriedoutinaccordancewithchosencon-
figuration,necessityofapplicationoftheadditionalequipment, andalsoparameters ofwater
consumptionobject.
Schematiccircuitsformeterinstallationdepending onitsconfigurationaregivenin
AppendixB.
9.2.2 Climaticconditionsinaroom,wheremetercomponentsareinstalledshouldbe
as follows:
1)Inaplace forFS andRТDinstallation:
−ambienttemperaturecanvaryfrom −40 °Cupto+70 °C;
−ambienthumidityis upto95 %, whiletemperatureis 35 °С;
2)Inaplace forcalculatorinstallation:
−ambienttemperaturecanvaryfrom5 °Cupto55 C;
−ambienthumidityis upto93 %whiletemperatureis 25 °С.
Climaticconditionsinaplace forinstallationoftheadditionalequipmentshouldmeet
theconditions specifiedintheoperationaldocumentationforthis equipment
9.2.3 ProtectionofplacesforFS and RTDinstallationfromdirectingress ofmois-
ture, dirt, oils andaggressiveliquids shouldbeprovided.
Thecontentofacidand alkali fumeinairofpremises, wheremetercomponentsarein-
stalled, shouldbewithinthelimits ofsanitaryrules.
ForoutdoorFSinstallationitisrecommendedtoprovideprotection(canopy)against
directingress ofatmosphericprecipitates onultrasonicflowsensors.