electromagnetic flow meter 3 - xylem analytics · between the two electrodes in the flow sen-sor...

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GB3.05MagFlux071116

3.05

Electromagnetic Flow Meter

Data Sheet

Wereservetherighttocontinuouslyimproveourproductsandmakeanychangeinthestatedspecificationsanddimensionswithoutpriornotice.

Data Sheet Electromagnetic Flow Meter


GB3.05MagFlux0711162

General MagFlux®ElectromagneticFlowMetersdeliververystableandhighlyaccurateflowmeasurementsinconductiveliquids.

MagFlux®FlowMetershavenomovingpartstofoul,createnohydraulicinfluenceontheflow,useawell-proventechnology,andcom-municateusingastandardprotocol.

MagFlux®FlowSensorsareavailableinsizesrangingfromDN3toDN1200,withstandardconstructionlengthsandconnections.

MagFlux®FlowMeterscanbeinstalledeitherwiththeelectronicsmountedontheflowsensor,onawall,ormountedinapanel.

Applications

Function

Flexible Installation

Max. 1.000 m twisted ➀ cable

Max. 50 mspec. cable

Max. 1.000 m twisted ➀ cable

Max. 50 mspec. cable

Max. 1.000 m twisted ➀ cable (total)

WhentheinternaldiameteroftheFlowSensorisknown,theactualvolumeiscalculatedbytheConverter.

Theelectromagneticvoltageinducedbe-tweentheelectrodesequatesto:

E = L x B x Vwhere:

E: Inducedelectromagneticvoltage

L: Flowsensordiameter

B: Thestrengthofthemagneticfield

V: Thevelocityoftheliquid

ThevoltageEismeasuredandconsequentlyconvertedtoavolumetricflow.

TheMagFlux®operationisbasedonFara-day’slawofinduction.Whenaconductivefluidpassesthroughamagneticfieldinthesensor,anelectromagneticvoltageisinducedbetweenthetwoelectrodesintheflowsen-sortube.Thisvoltage(E)isdirectlypropor-tionaltothefluidvelocity.

MagFlux®FlowMetersareusedformeasur-ingandtotalizingflowofconductiveliquidsinpressurizedclosedpipesystems.

MagFlux®FlowMetersmeasureflowinbothdirectionsofpotablewater,wastewaterandprocessfluids.

The MagFlux® Converter mounted directly on the flow sensor with a remote mounted Display Unit.

The MagFlux® Converter and Display Unit mounted directly on the Flow Sensor.

TheMagFlux® Converter and Display Unit remote mount-ed. For example when the sensor is being buried or submerged.

The MagFlux® Converters are mounted directly on the Flow Sensors, while the remote mounted Display Unit communicates with two MagFlux® Converters and Flow Sensors.

The MagFlux® Converter is mounted remote from the Flow Sensor, and the Display Unit is mounted separately from the Converter. E.g when the Sensor is being buried.

➀ In noisy environments, twisted shielded cable is recommended.

MJK'smodulardesignisversatile.TheDisplayUnitcanbemountedupto1000mfromtheFlowConverterwithordinarytwistedwires.ItalsoprovidesoptionsformountingtheConverterwhereitismostconvenienttomaketheelectricalconnections.

OneDisplayUnitcancontrolupto4Conver-tersandFlowSensorsforgreatereconomy,spacesavingsandanimprovedoverviewofthemultiplemeasurementvalues.




Counters for Flow in Both Directions

Easy-to-use Menu Structure

Registering the Flow Sensor

Flexible In- and Outputs

Automatic Electrode Cleaning

TheMagFlux®DisplayUnithasmanyuniqueandintelligentfunctions.Ithasasimplemobilephone-likemenustructureandcandisplaytextinseveralselectablelanguagesinmetricorEnglishunits.

TheMagFlux®PCconnectionallowsdown-loadingconfigurationsandloggingdatatoaPC,anduploadingnewsoftwareupdatesandinstrumentcustomization.AllthroughintuitivestepsusingacommonUSBport.

TheMagFlux®SystemregisterstheFlowSensortotheConverterusingauniquecodedsix-digitserialnumbertechnique.Itsetscalibrationdata,thenominaldiameterandthesensorconfiguration–makingtheMagFlux®Systemreadytomeasureimmedi-ately.Thisavoidscomplicatedandsensitivefieldcalibrationanddelicateelectronicsinthesensor,andallowsunlimitedinterchangingofMagFlux®ConvertersandFlowSensors.

TheMagFlux®Converterhasresettableandnon-resettablecountersforflowinbothdirec-tions.MagFlux®hastwobatchcounterswithsmart-batchcounting.

TheMagFlux®Systemmeasuresflowinbothdirectionsandcantotalizethenetflowforboth.Asimplemenuselectiondeterminesthenormalflowdirection.

TheMagFlux®built-in256kBdataloggercanlog20.000entrieswithtimeanddate.Dataisdisplayedgraphically,butcanalsobeexportedtoaPCviatheUSBportontheDisplayUnit.

TheMagFlux®Converterhasone4-20mAanalogueoutput,twodigitaloutputsandonedigitalinput.Thedigitalinputcanstopandzerocountersettingsorcontrolthebatchcountersmanually.Eachalarmcanbedis-playedasapop-upalarmuntiltheyarereset.

TheMagFlux®built-inelectronicelectrodecleaningsystemisalwaysactive.

TheMagFlux®displaycanbeconfiguredbytheuserforuptofivelinesoftext.Thegraphicdisplayisautomaticallyadjustedtoshowthelargestcharacterspossible.

TheDisplayUnitusestheModbus®commu-nicationprotocoltoconnecttotheMagFlux®ConverteroraPLC.

Simple to Operate

Forward and BackwardsFlow Measurement and Totalizing

Data Logger

User Definable Text

Modbus® Communication




Specifications

Converter and Display Unit

Mechanical Dimensions,

Converter and Display Unit

150

144

162

156

M20

186

89

83

183

85

79

Display unit

Enclosurerating Dust-andwaterproofIP67,NEMA6(whenmountedonConverter)

Housingmaterial Polycarbonate,glassreinforced

Protectionlid Transparentpolycarbonate

Display WhitebacklitLCD-display(64x128pixels)withsoftkeys

Indication Indicationofflow,flowdirection,volume,totalizers,configurationandgraph

Clock Real-timeclockwithbuilt-inbatterybackup

Communication MODBUS®RTU-mode,9600baud,2-wireRS485,master-mode

Interface RS485

Memory 256KbFlashMemory,20.000entrieswithdate,timeandvalue

Interface USB1,1typeminiB,Female

Temperaturerange -20…60°C

Converter

Accuracy +/-0,1%ofreading

Measuringrange Min.range=0-0,2m/sMax.range=0-10m/s

Min.liquidconductivity ≥5mS

Analogoutput Oneactive4-20mA,galvanicallyisolated(max.load800Ω)

Digitaloutputs Onevoltage-freeelectromechanicalrelay(max.50VDC/1A)OneopticallyisolatedMOSFETrelay(max.50VAC/VDC/120mA)programmablefor:totalizercounter,batchcounter,high/lowflow,systemerror,emptypipeandflowdirection.

Digitalinputs One,max.30VDC,<5VDC=0(low),>10VDC=1(high),pulselength>100ms

Communication: MODBUS®RTU-mode,9600baud,2-wireRS485,slave-mode

Interface RS485forconnectiontoDisplayUnitorPLC

Powersupply 24VAC,50/60Hz±10%or115VAC,50/60Hz±10%or230VAC,50/60Hz±10%Powerconsumptionmax.10W

Cabinetmaterial Polycarbonate,glassreinforced

Enclosurerating IP67,NEMA6.TheMagFlux®flowmetercanbesubmersible(IP68/NEMA6P)byusinggelpottingkit(Partno.579035)andchosingawall-mountedconverter.


Weight 1,0kg

CEapprovals EN61000-6-4:2001,EN61000-6-2:2001

Connection box

Enclosurerating IP68,NEMA6X(usinggelpottingkitpartno.579035).Theflowmetercanwithstandunlimitedimmersionofupto10mofwater.

Cabinetmaterial Polycarbonate,glassreinforced





IftheMagFlux®Sensoristobeburiedorsub-mergedunderwater,theConverterandDis-playUnitmustberemotemounted,andtheelectricalconnectiontothesensormustbepottedusinggelpottingkitpartno.579035.

IP 68 Protection

Order Numbers MagFlux® Converters, Displays and Accessories

MagFlux® converter

207910 MagFlux®Converter(blind)forsensormounting230VACOptional115VAC

207911 MagFlux®Converter(blind)forsensormounting24VAC

207912 MagFlux®Converter(blind)10-30VDC

207920 MagFlux®ConverterwithDisplayUnitforFlowSensormounting230VACOptional115VAC

207921 MagFlux®ConverterwithDisplayUnitforFlowSensormounting24VAC

207922 MagFlux®ConverterwithDisplayUnit10-30VDC

207925 MagFlux®ConverterwithDisplayUnitforwallmounting230VACOptional115VAC

207926 MagFlux®ConverterwithDisplayUnitforwallmounting24VAC

Accessories

207930 MagFlux®WallMountingKit

207935 MagFlux®PanelMountingBracket

207937 MagFlux®LightningProtectionKit

207940 MagFlux®DisplayUnit

579035 MagFlux®GelPottingKit

691080 MagFlux®SensorCable

691095 MagFlux®USBCable

840110 MJK-FieldLinksoftwareforcommunica-tionbetweenMagFlux®andPC

Electrical Connections on the Converter

Red

Whi

te

Bla

ck

Blu

e

Bro

wn

For

atta

ched

Dis

play

Uni

t

For

rem

ote

Dis

play

Uni

t

Dig

ital o

utpu

t 1D

O 1

DI

1

DO

2D

igita

l out

put 2

Dig

ital i

nput

10-3

0 V

DC

4-20

mA

out

put

Pow

er s

uppl

y

Ele

ctro

nic

rela

ym

ax. 5

0 V

DC

120

mA

Ele

ctro

mec

hani

cal r

elay

max

. 50

V A

C /

1 A

4-20

mA

max

. 800

Ω

Fus

e ra

ting:

100

mAT

@ 1

15 V

ACConnection for

Flow Sensor

63 m

AT @

230

V A

C

MagFlux®mounted in a panel

207935, MagFlux®Panel Mounting Bracket

207930, MagFlux® Wall Mounting Kit

207920, MagFlux®Converter with Display Unit for Sensor Mounting




Example 1

Compact Converter and Display Unit on Flow Sensor

MagFlux® Sensor CablePart No. 691080 (max. 50 m)

Example 2

Remote Converter,Connection Box on Flow Sensor

Converter and Display Unit in Wall / Panel Housing

IftheMagFlux®Sensoristobeburiedorsubmergedunderwa-ter,theConverterandDisplayUnitmustberemotemounted,andtheelectricalconnectiontotheFlowSensormustbepot-tedusingGelPottingKitpartno.579035.

Order numbers

207xxx MagFlux® Flow Sensor

207920 MagFlux®ConverterwithDisplayUnit,230/115VAC

Order numbers

207xxx MagFlux® Flow Sensor

207925 MagFlux®Conver-terwithDisplayUnitforwallmounting,230/115VAC

691080 MagFlux®SensorCable

577935 MagFlux®GelPottingKitIP68.



GB3.05MagFlux071116

Order numbers

2 pcs. 207xxx MagFlux®

Flow Sensors

1 pc. 207910 MagFlux®Converter(blind)forsensormounting,230/115VAC

1 pc. 207925 MagFlux®ConverterwithDisplayUnitforwallmounting,230/115VAC

Example 3

Remote Display and Mul-tiple Converter Wiring

ThecommunicationbetweentheDisplayUnitiscarriedoutona2-wirecableusingModBus®communicationontheRS-485transmissionlines.

TwoadditionalwiressupplypowerfromoneoftheConverterstotheDisplayUnit.

2-wirecable(max.1000m).Twistedshieldedcableisreco-mended

4-wirecable(max.1000m).Twistedshieldedcableisreco-mended

TheDisplayUnitonwallmountingkit.TheDisplayUnitcanoperateuptofourConverters.

7




Flow Sensor 7100

Housing: Carbon steel Lining: PTFE

Sizes and Ordering information

Specifications - EN / ANSI Flanges

Mounting FlangeEN-1092-1/ANSIB16.5MaterialsHousing➅ CarbonsteelFlanges➅ CarbonsteelLining PTFEElectrodes ➂ ➄ 1,4571/AISI316TI

Accuracy➃ Betterthan ± 0,25%Mediatemp.range -20…150°C/0…300°FAmbient temp. rangeCompactconverterRemoteconverter

-10…60°C/15…140°F-20…100°C/0…200°F

Enclosure IP67,IP68/NEMA4,NEMA6P➂Hastelloy C4, platinium, and titanium. Consult the factory.➃Of measured value.➄ From DN 50 / 2” and up, a ground electrode is built in.➅ Also avalible in Steel 304/316 SS. Consult the factory.

D Siz

e

L

130/

135

d

Sizes and Ordering Information - EN Flanges

Size Pressure D L Weight Order no.DN PN➁ [mm] [mm] [kg]15 40 95 200 3,5 20710720 40 105 200 3,5 20711025 40 115 200 3,5 20711332 40 140 200 6 20711640 40 150 200 7 20711950 16 165 200 8 20712265 16 185 200 10 20712580 16 200 200 12 207128100 16 220 250 16 207131125 16 250 250 21 207134150 16 285 300 28 207137200 16 340 350 35 207140250 10 395 450 43 207143300 10 445 500 55 207146350 10 505 550 66 207149400 10 565 600 94 207152➁PN 25-40-64. Consult the factory.

Sizes and Ordering Information - ANSI Flanges

Size Pressure D L Weight Order no.[inch] [psi]➁ [mm] [mm] [kg]½" 150 90 200 3,5 297107¾" 150 100 200 3,5 2971101" 150 110 200 3,5 297113

1¼" 150 120 200 6 2971161½" 150 130 200 7 2971192" 150 150 200 8 297122

2½" 150 180 200 10 2971253" 150 190 200 12 2971284" 150 230 250 16 2971315" 150 255 250 21 2971346" 150 280 300 28 2971378" 150 345 350 35 297140

10" 150 405 450 43 29714312" 150 485 500 55 29714614" 150 535 550 66 29714916" 150 600 600 94 297152

➁300-600 psi. Consult the factory.

Specifications



GB3.05MagFlux071116


Size Pressure D L Weight Order no.DN PN➁ [mm] [mm] [kg]15 40 95 200 3,5 20720720 40 105 200 3,5 20721025 40 115 200 3,5 20721332 40 140 200 6 20721640 40 150 200 7 20721950 16 165 200 8 20722265 16 185 200 10 20722580 16 200 200 12 207228100 16 220 250 16 207231125 16 250 250 21 207234150 16 285 300 28 207237200 16 340 350 35 207240250 10 395 450 43 207243300 10 445 500 55 207246350 10 505 550 66 207249400 10 565 600 94 207252450 10 615 600 105 207255500 10 670 600 122 207258600 10 780 600 158 207261700 10 895 700 230 207264800 6 1015 800 325 207267900 6 1115 900 420 2072701000 6 1230 1000 510 2072731200 6 1450 1200 680 207276➁PN 25-40-64. Consult the factory.


Size Pressure D L Weight Order no.[inch] [psi]➁ [mm] [mm] [kg]½" 150 90 200 3,5 297207¾" 150 100 200 3,5 2972101" 150 110 200 3,5 297213

1¼" 150 120 200 6 2972161½" 150 130 200 7 2972192" 150 150 200 8 297222

2½" 150 180 200 10 2972253" 150 190 200 12 2972284" 150 230 250 16 2972315" 150 255 250 21 2972346" 150 280 300 28 2972378" 150 345 350 35 297240

10" 150 405 450 43 29724312" 150 485 500 55 29724614" 150 535 550 66 29724916" 150 600 600 94 29725218” 150 635 600 105 29725520” 150 700 600 122 29725824” 150 815 600 158 29726128” 150 930 600 230 29726432” 150 1050 800 325 29726736” 150 1170 800 420 29727040” 150 1275 800 510 29727348” 150 1510 1000 680 297276

➁300-600 psi. Consult the factory.

Flow Sensor 7200

Housing: Carbon steel Lining: Hard rubber


Mounting FlangeEN-1092-1/ANSIB16.5MaterialsHousing➅ CarbonsteelFlanges➅ CarbonsteelLining HardrubberElectrodes ➂ ➄ 1,4571/AISI316TIAccuracy➃ Betterthan ± 0,25%Mediatemp.range -10…80°C/15…175°FAmbient temp. rangeCompactconverterRemoteconverter

-10…60°C/15…140°F-10…80°C/15…175°F


D Siz

e

L

130/

135

d

9


Specifications




L

140

/145

A Siz

e

Specifications

Mounting WaferMaterialsHousing➅ CarbonsteelLining PTFEElectrodes ➂ ➄ 1,4571/AISI316TIAccuracy➃ Betterthan ± 0,25%Mediatemp.range -20…150°C/0…300°FAmbient temp. rangeCompactconverterRemoteconverter

-10…60°C/15…140°F-20…100°C/0…200°F

Enclosure IP67/NEMA4➂Hastelloy C4, platinium, and titanium. Consult the factory.➃Of measured value.➄ From DN 50 / 2” and up, built in ground electrode.➅ Also available in Steel 304/316 SS. Consult the factory.➆ Standard for DN 3 - 10 / 1/8” - 3/8” is AISI 316 TI.

Sizes and Ordering Information

Size Pressure A L Weight Order no.DN [inch] PN [mm] [mm] [kg]3 1/8” 10 105 100 2 207301➆6 ¼" 10 105 100 2 207302➆8 5/16” 10 105 100 2 207303➆

10 3/8" 10 105 100 2 207304➆15 ½" 40 62 74 1,1 20730720 3/4" 40 62 74 1,1 20731025 1" 40 72 104 1,5 20731332 1¼" 40 82 104 1,8 20731640 1½" 40 92 104 2,2 20731950 2" 16 107 104 2,8 20732265 2½" 16 127 104 3,2 20732580 3" 16 142 104 3,5 207328

100 4" 16 162 104 4 207331125 5" 16 192 134 6 207334150 6" 16 218 134 8 207337200 8" 16 274 219 10 207340

Flow Sensor 7300

Housing: Carbon steelLining: PTFE


Specifications




L

140

/145

A Siz

e

Flow Sensor 7400

Housing: Carbon steelLining: Hard rubber

Sizes and Ordering Information

Size Pressure A L Weight Order no.DN [inch] PN [mm] [mm] [kg]15 ½" 40 62 74 1,1 20740720 3/4" 40 62 74 1,1 20741025 1" 40 72 104 1,5 20741332 1¼" 40 82 104 1,8 20741640 1½" 40 92 104 2,2 20741950 2" 16 107 104 2,8 20742265 2½" 16 127 104 3,2 20742580 3" 16 142 104 3,5 207428100 4" 16 162 104 4 207431125 5" 16 192 134 6 207434150 6" 16 218 134 8 207437200 8" 16 274 219 10 207440

Specifications

Mounting WaferMaterialsHousing➅ CarbonsteelLining HardrubberElectrodes ➂ ➄ 1,4571/AISI316TIAccuracy➃ Betterthan ± 0,25%Mediatemp.range -10…80°C/15…175°FAmbient temp. rangeCompactconverterRemoteconverter

-10…60°C/15…140°F-10…80°C/15…175°F

Enclosure IP67➂Hastelloy C4, platinium, and titanium. Consult the factory.➃Of measured value.➄ From DN 50 / 2” and up, built in ground electrode.➅ Also avalible in Steel 304/316 SS. Consult the factory.


Specifications



GB3.05MagFlux071116

Flow Sensor 7600

Housing: Carbon steel Lining: Soft rubber


Mounting FlangeEN-1092-1/ANSIB16.5MaterialsHousing➅ CarbonsteelFlanges➅ CarbonsteelLining SoftrubberElectrodes ➂ ➄ 1,4571/AISI316TIAccuracy➃ Betterthan ± 0,25%

Mediatemp.range -10…80°C/15…175°FAmbient temp. rangeCompactconverterRemoteconverter:

-10…60°C/15…140°F-10…80°C/15…175°F


12


Size Pressure D L Weight Order no.DN PN➁ [mm] [mm] [kg]15 40 95 200 3,5 20760720 40 105 200 3,5 20761025 40 115 200 3,5 20761332 40 140 200 6 20761640 40 150 200 7 20761950 16 165 200 8 20762265 16 185 200 10 20762580 16 200 200 12 207628100 16 220 250 16 207631125 16 250 250 21 207634150 16 285 300 28 207637200 16 340 350 35 207640250 10 395 450 43 207643300 10 445 500 55 207646350 10 505 550 66 207649400 10 565 600 94 207652450 10 615 600 105 207655500 10 670 600 122 207658600 10 780 600 158 207661700 10 895 700 230 207664800 6 1015 800 325 207667900 6 1115 900 420 2076701000 6 1230 1000 510 2076731200 6 1450 1200 680 207676➁PN 25-40-64. Consult the factory.

D Siz

e

L

130/

135

d


Size Pressure D L Weight Order no.[inch] [psi] [mm] [mm] [kg]½" 150 90 200 3,5 2976073/4" 150 100 200 3,5 2976101" 150 110 200 3,5 297613

1¼" 150 120 200 6 2976161½" 150 130 200 7 2976192" 150 150 200 8 297622

2½" 150 180 200 10 2976253" 150 190 200 12 2976284" 150 230 250 16 2976315" 150 255 250 21 2979346" 150 280 300 28 2979378" 150 345 350 35 297940

10" 150 405 450 43 29764312" 150 485 500 55 29764614" 150 535 550 66 29764916" 150 600 600 94 29765218” 150 635 600 105 29765520” 150 700 600 122 29765824” 150 815 600 158 29766128” 150 930 600 230 29766432” 150 1050 800 325 29766736” 150 1170 800 420 29767040” 150 1275 800 510 29767348” 150 1510 1000 680 297676

➁ 300-600 psi. Consult the factory.


Specifications



GB3.05MagFlux071116

Grounding Rings

d

D

b

Sizes and Ordering InformationSize D d b Weight Order no.

DN [inch] [mm] [kg]15 ½" 50 22 6 0,06 20780720 ¾" 60 28 6 0,08 20781025 1" 71 35 6 0,1 20781332 1¼" 82 43 6 0,13 20781640 1½" 92 49 6 0,16 20781950 2" 107 61 6 0,2 20782265 2½" 127 77 6 0,26 20782580 3" 142 90 6 0,32 207828100 4" 162 115 6 0,4 207831125 5" 192 141 6 0,5 207834150 6" 218 170 6 0,6 207837200 8" 273 220 6 0,8 207840250 10" 328 274 6 1,0 207843300 12" 378 325 6 1,2 207846350 14" 438 360 6 1,4 207849400 16" 489 411 6 1,6 207852450 18” 539 463 6 1,8 207855500 20” 594 514 6 2,0 207858

Specifications

Material AISI316SSWire 2,5mm2/AWG13

13


Specifications



GB3.05MagFlux071116

Flow Sensor Sizing

14

Flow Sensor Sizing - Example

TocalculatethecorrectsizeoftheFlowSensortherecomendedflowvelocityshouldbebetween1and3m/stoachievehighac-curacyatlowvelocities(downto0,2m/s),toensuresafeoperationofthetubesystemandtominimizepressurelosses.

TheflowcurvesandgraphsonthefollowingpageillustratehowthesizeoftheFlowSen-soriscalculatedtogettherequiredmeasu-ringaccuracy.

Example

A volume of 50 m³/h is running through a pipe that measures 100 mm in internal diameter. To select the correct MagFlux® Flow Sensor, the liquid velocity should be in the range 1 - 3 m/s for 50 m³/hr.

If a MagFlux® Flow Sensor with the same internal diameter as the pipe is selected (100 mm), the flow velocity will be 1.5 m/s at a flow rate of 42 m³/h. The diagram and table below also shows that a flow between 5.65 m³/h and 283 m³/h can be measured.

Min. / Max. Flow and Default mA Settings

Size Qmin = 0,2 m/s Qmax = 10 m/s 20 mADN [inch] [l/h]3 1/8” 5,09 254 2506 ¼" 20,4 1018 10008 5/16” 36,2 1810 200010 3/8” 56,5 2827 500015 ½" 127 6362 500020 3/4" 226 11304 1000025 1" 353 17676 2000032 1¼" 579 28944 3000040 1½" 905 45360 5000050 2" 1414 70560 75000- - [m3/h]

65 2½" 2,39 119 10080 3" 3,62 181 200100 4" 5,65 283 300125 5" 8,84 442 400150 6" 12,7 636 600200 8" 22,6 1131 1000250 10" 35,3 1767 2000300 12" 50,9 2545 2500350 14" 69,3 3464 3000400 16" 90,5 4524 4500450 18” 115 5726 6000500 20” 141 7069 7000600 24” 204 10179 10000700 28” 277 13854 15000800 32” 362 18095 20000900 36” 458 22902 250001000 40” 565 28274 300001200 48” 814 40715 40000



GB3.05MagFlux071116

Nominal diameter of MagFlux® flow sensor

Fluid velocity [m/s]

Flow [m³/h]

DN

120

0 - 4

8"

DN

100

0 - 4

0"D

N 9

00 -

36"

DN

800

- 32

"D

N 7

00 -

28"

DN

600

- 24

"

DN

500

- 20

"D

N 4

50 -

18"

DN

400

- 16

"D

N 3

50 -

14"

DN

300

- 12

"

DN

250

- 10

"

DN

200

- 8"

DN

150

- 6"

DN

125

- 5"

DN

100

- 4"

DN

80

- 3"

DN

65

- 2 1

/2"

DN

50

- 2"

DN

40

- 1 1

/2"

DN

32

- 1 1

/4"

DN

25

- 1"

DN

20

- 3/4

"

DN

15

- 1/2

"

DN

10

- 3/8

"

DN

8 -

5/16

"

DN

6 -

1/4"

DN

3 -

1/8"

0,1

0,2

0,3

0,4

0,50,60,70,80,9

1

2

3

4

56789

100

,2

0,3

0,4

0,5

0,6

0,7

0,8

0,9 1 2 3 4 5 6 7 8 9 10

20

30

40

50

60

70

80

90

0,0

2

0,0

1

0,0

3

0,0

4

0,0

50

,06

0,0

70

,08

0,0

90

,1

20

00

0

30

00

0

40

00

0

10

0

20

0

30

0

40

0

50

0

60

07

00

80

09

00

10

00

20

00

30

00

40

00

50

00

60

00

70

00

80

00

90

00

10

00

0

1,5

425.65 283

100

15

Flow / Velocity Graph (metric)

Measurement Accuracy

Example:If a 100 mm MagFlux® Flow Sensor is selected, the diagram shows the available measuring accuracy between 0.2 - 10 m/s (here: 0.25%).

1

2

3

4

5

[%]

0,20,10 0,5 21 5 10 m/s

Accuracy

0.25


GB3.05MagFlux071116

Minimum pipe diameter distances for accurate MagFlux® flow measurements:

Sensor Mounting Conditions

Reducing the Flow Meter Size

WhenthesizeoftheFlowMeterisreducedtocausetheflowtoreachasufficientveloc-ity,thepipesizehastobereduced.Thiswillcauseapressurelosswhichcanbecalculat-edusingthepressurelosschartattheright.

WhentheMagFlux®Sensorissmallerthannominalpipediameter,thepressurelosscanbechecked,usingthepressurelosschart.

DO DNα < 7,5°

Pressure loss graph[bar]

Accurateflowmeasurementrequiresaminimumoftree(3)pipediametersofstraightpipeupstreamandtwo(2)pipediametersof

Min. 3 x Diameter inlet Min. 2 x Diameter outlet

Example:A MagFlux® Flow Sensor with an internal diameter of 80 mm is selected and the pipe size is 100 mm. Consequently the fluid velocity for a flow of approximately 50m3/h will increase to about 3 m/s (see graph on page 11).

Using a DN80 mm MagFlux® flow sensor also leads to a smaller measurement range (3.62 m3/h - 181 m3/h). See graph on page 11.

The diagram on the right shows that re-ducing the pipe size from 100 to 80 mm will cause a pressure loss of 3 mbar (0.003 bar).

straightpipedownstreamfromthecenteroftheFlowSensor.

0,003

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electromagnetic flow meter 3 - xylem analytics · between the two electrodes in the flow sen-sor...

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