model ss400 mlss analyzer - yokogawa electric · of only six touch-sensitive keys accessible...

GeneralSpecifications

Yokogawa Electric Corporation2-9-32, Nakacho, Musashino-shi, Tokyo, 180-8750 JapanTel.: 81-422-52-5617 Fax.: 81-422-52-6792

Model SS400MLSS Analyzer

GS 12E6A1-E

n GeneralThe Model SS400 MLSS Analyzer is a measuring system best suited to continuously and consistently measure the concentration of mixed liquor suspended solids (MLSS) in an activated-sludge treatment process found in sewage or industrial wastewater treatment facilities.The analyzer consists of an MLSS sensor comprising lightemitting and photodetector units, an MLSS converter with a digital display for instant recognition of readings, and one of several types of holders. Designed to be more lightweight and compact for easier handling when compared with conventional equipment, the analyzer also has a construction that allows easy system maintenance.The SS400G MLSS converter has a measuring range as wide as 500-20000 mg/L (ppm). Microprocessor-based, it has a wealth of self-diagnostic functions and alarm contact outputs like other converters in the EXA series, as well as excellent operability.The SS300G MLSS sensor uses a measuring method that compares transmitted light with scattered light. The sensor is designed with due care to the arrangement of the optical system. These design makes the sensor less susceptible to disturbing light. The optional jet cleaning unit permits continuous and consistent measurement even in an application where the sensor is exposed to contaminants.A self-cleaning floating holder is available in addition to free-standing and immersion models, offering a wide range of choices according to the application needs.

n FEATURESConverter•Wideoutputranges,0-1000mg/Lto0-20000mg/L•Outputindifferenttworanges•Abundantcontactoutputs•Enhancedself-diagnosisfunctionsincludingfailureinlightsource

Sensor•Easy-to-maintain,lightweight,compactprobe-likesensor

•Virtuallynoneedforreplacinglightsourceandphotodetectorunit

•Pulse-drivenlightemission,eliminatingeffectsofdisturbinglight

•Arrangementofopticalsystemhighlyimmunetoeffectsoflightreflectingfromboundarysurface

•Jetcleaningunitoption•Choiceofvarioustypesofholdersaccordingtoapplicationneeds

GS12E6A1-E©CopyrightJul.1998

5thEditionApr.15,2014

n SYSTEM CONFIGURATION

SS300G MLSS sensor

• PH8HG guide pipe

• PB350G or PB360G floating ball

holder

• DOX8HS immersion

holder

SS400G MLSS converter

Holder, Holders with cleaning unit

Terminal box

SS380G calibration kit

Withoutcleaning

Jet-cleaning

Output signal:Two outputs; 4-20 mA DC

Alarm contact output:Four contacts: upper/lower limits, cleaning timer, FAIL and HOLD contacts

100-240 V AC24 V DC ±10%

F0102.ai

Fordetailsonholders,seetheGS12J05C02-00Egeneralspecificationsleaflet.

2

All Rights Reserved. Copyright © 1998, Yokogawa Electric Corporation GS 12E6A1-E

n MEASURING PRINCIPLELightbeamsreleasedfromthelight-emittingunitscatterbecauseofsuspendedsubstancesinwater.TheSS400MLSSanalyzerreceivestransmittedandscatteredlightbeamsatitsphotodetectorunittoconvertthemtoanelectricsignal.TheanalyzerthencomparesthetransmittedlightbeamswiththescatteredonestocalculatetheratioanddeterminetheMLSSconcentration.Figure1isabriefillustrationexplainingthemeasuringprincipleusingthetransmitted/scatteredlightcomparisonmethod.ScatteredlightJ1 andtransmittedlightJ2arerepresentedasequations(1)and(2),respectively.SinceI1intheillustrationisrepresentedasequation(3),theratioofJ1toJ2isexpressedasequation(4).TheMLSSconcentrationSisthereforedeterminedbyequation(5)ifthephotodetectorisconfiguredtosatisfyL2 = L3.

S = Concentration of suspended substances; m = Scatter factorC = Concentration of coloring components; k = Absorption factorf = Shape factor due to aperture

SampleScattered lightPhotodetector unit

TransmittedlightPhotodetectorunit

Incidentlight

f1

I0

f2

J1

J2

L2L1

I1

L3L

F01.ai

Figure 1 Principle of Measurement Using Transmitted/Scattered Light Comparison Method

J1=f1I1mSLexp(-kCL3)exp(-mSL3) equation(1)J2=f2I0exp(-kC(L1+L2))exp(-mS(L1+L2)) equation(2)I1=I0exp(-kCL1)exp(-mSL1) equation(3)J1/J2=(f1/f2)mSLexpkC(L2–L3)expmS(L2–L3) equation(4)S=(f2/f1mL)(J1/J2) equation(5)

Theuseofthetransmitted/scatteredlightcomparisonmethodhasmadeitpossibletomeasureevenlowconcentrationswhichhavebeendifficulttomeasurewiththeconventionalscattered-lightcomparisonmethod.Thismethodeliminatestheeffectsofcoloringcomponents.Along-lifeLEDlampisusedasthelightsourceinthelight-emittingunit,eliminatingbothworriesaboutabreakdowninthelightsourceandtheneedforreplacingthelightsource.TheLEDlampispulsedriven.Evenifdisturbinglightentersthephotodetectorunitandraisesthebaseline,theanalyzereliminatestheeffectsofthelightbysubtractingV0 fromV1togetthedifferencebetweenthetwosignals,asshowninFigure2.TheanalyzercanthusacquireasignalfortheMLSScomponentonly.

Output J of photodetector = V1 – V0

V1

V0

V1

V0

V1

V0

When there is no disturbing light

When there isDC componentof disturbing light

When there arebothAC and DC componentsof disturbing light F02.ai

Figure 2 Effects of Disturbing Light in Pulse-Driven Light Emission

Theopticalsystemisarrangedsothatlightbeamsdonotdirectlyhitthewallorboundarysurface,asshowninFigure3.Thisconstructionmakesthesensorhardlysusceptibletotheeffectsoflightreflectingfromtheboundarysurface.

Sensor

Boundary surface

F03.ai

Figure 3 Arrangement of Sensor’s Optical System

n FUNCTION SPECIFICATIONSDisplay and Information ItemsThedisplaypresentsacontinuousviewofallnecessaryitemsofinformation.Messagesappearonthesecondline,promptingtheoperator,onaninteractivestep-by-stepbasis,astowhichkeyhe/sheshouldpress.Theuserinterfaceissimple,consistingofonlysixtouch-sensitivekeysaccessiblethroughthesoftwindowcover.

CalibrationBeforeshipment,theSS400MLSSanalyzeriscalibratedtoavaluebasedonYokogawa-producedkaolinthatisusedasthereferencesubstance.Theuser,therefore,mustcalibratetheanalyzerduringsetuptotheuser’sownreferencesubstancetodefinethecorrectioncoefficient.Inordertogetconsistentmeasurementsoveraprolongedperiod,theuserneedstomakezerocalibrationsatfixedintervalsusingtapwaterorotheralternativestandards,aswellasspancalibrationsusingthesuppliedspan-calibratingplate.ThevaluegivenbytheplateispredeterminedusingYokogawa-producedkaolinasthereferencesubstance.Inthecalibrationmodeusingthecalibratingplate,thecorrectioncoefficientautomaticallyresetstozeroand,therefore,valuesinthismodearedifferentfromonesobtainedinthemeasurementmode.AcalibrationkitisavailablewiththeMLSSanalyzerforeasiercalibration.

Cleaning FunctionsThesensoroftheMLSSanalyzercomeswithanoptionalwiper-orjet-cleaningunit.Thisoptionisrecommendedforapplicationswherethesensormaybeexposedtocontaminants.Notethattheoptionisnotavailableifthesensorisusedtogetherwithafloatingballholder.

Apr.15,2014-00

3


Self-Diagnosis Functions of SensorTheMLSSanalyzerhasenhancedself-diagnosticfunctionsthatautomaticallydetectabreakdownoropencircuitinthesensor’slightsource,afailureintheconverterorotherfaults.Shouldafailurebefoundasaresultofdiagnosis,theFAILcontactturnson,causingtheoutputsignalstogointothe“burnout”state,ifsetaccordingly(onlyoutput1goesintothatstateinthecaseofaconverterfailure).AFAILmarkerappearsonthedisplay,theLEDindicatorcomeson,andthemessagelineshowsanerrorcode,thusallowingtheoperatortolearnthereasonforthefailure.Inaddition,theanalyzerautomaticallyrecognizesafailureinthesensorduringcalibration,showinganerrorcode(thecontactsandburnoutfunctionarenotactivatedatthatmoment).

Alarm and Control FunctionsThecontactoutputsoftheMLSSanalyzerhavethefollowingfunctions:•Processalarm Thestateofthecontactchangesiftheprocessvaluereachesitsupperorlowerlimit.

•Variableparameters: Setpointofprocessvalue,hysteresisofopen/closeactionanddelaytimeofrelay

HOLD Contact OutputUsedwhen,forexample,acontrolroomneedstobeinformedthattheoutputisinaHOLDstateduringcleaningorsystemmaintenance.Thecontrolroomitselfcanlearnofthisstatefromtheoutputsignal.

Cleaning Contact OutputUsedtocontroltheintervalsbetweenjetcleanings.Theintervalsbetweenordurationofcleaningsdifferdependingonthesensor’sdegreeofcontamination.Parameters,therefore,mustberesetaccordingtotheprocesscondition.•Variableparameters: Cleaningtime,post-cleaningrelaxationtimeandcleaninginterval

FAIL Contact OutputUsedwhenacontrolroomneedstobeinformedofafailure(S4contactonly).Ifanyfailureoccursduringmeasurement,theFAILindicatorcomesonandthiscontactturnson,allowingthecontrolroomtoimmediatelylearnthatafailurehasoccurred.TheS4contactusedastheFAILcontactalsoclosesifthepoweristurnedoff.

MLS

S c

once

ntra

tion

Cleaning Relaxation

Cleaning interval TimeT04.ai

Figure 4 Response During Cleaning

S3

FAIL

Sensor

Outputsignals

Contactoutputs

Power supply

4-20 mA

4-20 mA

S1

S2

Contactoutputs

Contactinputs

F05.ai

Figure 5 Example of External Wiring

n STANDARD SPECIFICATIONSMeasuringobject: Concentrationofmixedliquor

suspendedsolids(MLSS)inanaerationtankinasewageorindustrialwastewatertreatmentplant

Note: ·MLSSanalyzercannotbeusedformeasurementofsuspendedsolids(SS)concentrationineffluentafteraerationtreatment,neutralizationfacilities,andseawater.

·Whenaguide-pipetypesensorisusedinexcretadisposalfacilities,thecablemustnotcomeincontactwiththeliquid.Consultusforthedetail.

·Readthenoteonmeasuringobjectofthesensor,describedonthefollowingpage.

ConverterMeasuringmethod: Transmitted/scatteredlight

comparisonmethodMeasuringrange:500-20000mg/LOutputsignal:Two4-20mADCsignals;maximum

loadresistance:600Ω•TherangeofmA1outputcanbeswitchedbyremotecontrol.

•22±0.5mA(burnup)or2mA±0.5mA(burndown)canalsobeselectedasanoutputcurrentduringfailure

•Bothsignals(setpointorthemost-recentvalue)canberetainedduringsystemmaintenanceorcleaning.

•Therangeofconcentrationcanbesetseparatelyforbothofthesesignals.Outputrangesettingrange:Min.0-1000mg/L Max.0-20000mg/L,(zerosuppressioncan

besetforreadingsupto60%oftherange,andspanshouldbe1000mg/Lormore.)

Indication:Maindisplaysection;LCDsix-digitdisplay(maximumreading;99999.9mg/L;effectivedigits;3digits,minimumreading;0.1mg/L)

Messagedisplaysection;Six-digitalphanumericdisplay

Contactoutput:Typesofalarm: S1,S2andS3;alarmforupper/

lowerlimitsofconcentration,HOLD,cleaning

S4;FAILalarmAlarmactions: Configurablewithon/offoutput,

hysteresisanddelaytimeTypeofcontact: Relay(voltage-free)Capacity: 100VAmaximumat250VAC,2A 50Wmaximumat30VDC,2A

Mar.172017-02

4


Statesofcontact:

ContactState of

Contact atPower-Off

State of Contact at Power-OnWhen not Activated

When Activated

S1 Open Open ClosedS2 Open Open ClosedS3 Open Open ClosedFail Close Open Closed

Contactinput:Voltage-freecontactforremoterangeselectionandstartofcleaning

ONinputresistance: 200ΩorlessOFFinputresistance: 100kΩormore

Ambienttemperature: -10°to55°CRelativehumidity: 10to90%RH(non-condensing)Construction:ComplieswithJISC0920watertight,

IECIP65andNEMATYPE4XstandardsMaterial: Casing;Moldedaluminumalloy Cover;Polycarbonate Hoodforsunprotection(optional);Carbon

steelorStainlesssteel Mountingbrackets(optional);Stainless

steelFinish: Bakedpolyurethanecoating(standard)or

epoxybakedfinish(optional)Color: Casing;Frostywhite(equivalentto

Munsell2.5Y8.4/1.2) Cover;Deepseamossgreen(equivalent

toMunsell0.6GY3.1/2.0)Mounting:JIS50A(2-inch)pipe-mounted,wall-

mountedorpanel-mountedPowersupply:100-240VAC,50/60Hz 24VDCPowerconsumption:22VAmaximum(ACpower) 5Wmaximum(DCpower)Weight: Approximately2.5kgDimensions: 144(W)´144(H)´135(D)(mm)Cableinlet: Sixports,includingsensorcableinlet;

equippedwithplasticwatertightplugsequivalenttoDINPG13.5(outerdiameterofcable:6-12mm)

Cableterminal: 0.13to4mm2insize(onlypinterminalscanbeconnected)

Conduitadapter(optional): G1/2femalethreador1/2NPTthread

RegulatoryCompliance:EMCRegulatoryArrangementinAustraliaand

NewZealandEN55011ClassA,Group1

KoreaElectromagneticConformityStandardClassA한국 전자파적합성 기준

SensorShape: Probe-likeSensorMeasuringobject: Concentrationofmixedliquor

suspendedsolids(MLSS)inanaerationtankinasewageorindustrialwastewatertreatmentplant

Note: ·MLSSanalyzercannotbeusedformeasurementofsuspendedsolids(SS)concentrationineffluentafteraerationtreatment,neutralizationfacilities,andseawater.

·Whenaguide-pipetypesensorisusedinexcretadisposalfacilities,thecablemustnotcomeincontactwiththeliquid.Consultusforthedetail.

·Thestainlesssteelmaterialishighlycorrosionresistant,however,thebenefitmightbeaffectedbyincreasingacidity,alkalinity,orconcentrationofchlorideion.IfyouneedtomeasuretheMLSSconcentrationinanaerationtank,whichmaycontaincorrosiveelements,inasewageorindustrialwastewatertreatmentplant.,pleaseconsultus.

Measuringprinciple: Transmittedandscatteredlightcomparison

Measuringrange:500-20000mg/L(kaolinstandard)Temperatureofmeasuredobject:0-50°CPressureofmeasuredobject:0-200kPapHofmeasuredobject: pH6to8Flowvelocity:0.2to1m/sec(dependingonholder)Cablelength:3,5,10,15or20m(whenterminal

boxused,maximumcablelengthis50mwithinsensorcablelength.)

Materialofwettedpartorjunction:Body; Stainlesssteel(SUS316orSUS316L)Window; glassO-ring; nitrilerubberCable; PVC

Weight: Approximately0.5kgplusNx0.12kg,whereNiscablelengthm.

Cleaningunit(optional): JetcleaningNote: Nocleaningunitcanbeusedifthesensoris

equippedwithafloatingballholder.Materialofjetcleaningunit: Polypropylene,

polyethyleneandSUS304(wettedpart)Utilitiesofjetcleaning:

Pressure; waterjet100to200kPa airjet100to200kPaFlowrate;waterjet5to20L/min airjet10to20NL/min

Terminal BoxUsedtoinstalltheconverterandsensorunitseparatelyinthedistance.Ambienttemperature: -10to50°CConstruction:ComplieswithJISC0920rainproof

standardCasingmaterial: Fiberglass-reinforced

polycarbonateresinElectricalconnections:

Sensorside: JISA8-equivalentplasticwatertightplug

Converterside: JISA15-equivalentplasticwatertightplugwithaccessorycable(40mlongmaximum);conduitadapteroptional

Casingcolor: Grayishgreen(Munsell2.5GY5.0/1.0)Weight: Body; 0.5kg Mountingbracket; 0.7kg

Calibration KitCalibration-purposevesselMagneticstirrerBeaker(300mL)Erlenmeyerflask(250mL)Polyethylenebottle(500mL)

n CHARACTERISTICSLinearity: ±4.5%F.S.(bystablekaolinsolution)Repeatability:2%F.S.(bycalibrationplate)Stability: Zero±2%F.S./day(bycitywater) Span±2%F.S./day(bycalibrationplate) F.S.meansuppersettingvalueofoutput

range.

Mar.17,2017-02

5


n MODEL AND SUFFIX CODESMLSS Converter

[Style:S2]

Model Suffix code Option code Description

SS400G ························· ········· MLSSConverter— -N ········· Always“-N”Supplyvoltage

-1-4

··················

100-240VAC,50/60Hz24VDC*1

Languageforcautionarynotesorotherremarks

-J-E

··················

JapaneseEnglish

Option Bracket

Hood

TagplateFinishUnit

Adapterforconduitinstallation

/U

/PM

/H3

/H4

/SCT/X1/PPM/AFTG/ANSI/SPS

Pipeorwallmounting(stainlesssteel)Panelmounting(stainlesssteel)Hoodforsunprotection(carbonsteel)Hoodforsunprotection(stainlesssteel)Withstainless-steeltagplateEpoxybakedfinishReadingsinppmG1/2(femalethread)1/2NPTthreadWithscrewsforsaltprotection*2

*1: NOT2-wiresystem*2: TheSUSscrewswithtefloncoatingareusedatfour

cornersofthecover.MLSS Sensor

[Style:S2]

Model Suffix code Option code Description

SS300G ························· ········· MLSSSensor— -NN ········· Always“-NN”Cablelength

-03-05-10-15-20

·············································

3m5m10m15m20m

Treatmentoncableends

-PN ········· Pinterminals

Option Cleaningunit

Bracket

/JTJ

/JTA

/MS

Rc1/2*connectionwithjetcleaningunit(femalethread)1/2NPT*connectionwithjetcleaningunitHardwareforfree-standinginstallation

*: Choosethisoptionifaholderisused.

Terminal BoxModel Suffix code Option

code Description

WTB10 ························· ········· TerminalboxApplicationsystem

-SS1 ········· For MLSS analyzer

— -NN ········· Always“-NN”Cablelength -00

-05-10-20-30-40

······················································

Nocable(*1)5m10m20m30m40m

Option Bracket

Adapterforconduitinstallation

/P/W/AWTB/ANSI

PipemountingWallmountingG1/2(femalethread)1/2NPTthread

Thecableisamaximumof50mlong,includingthelengthofthesensorcable.*1: Thededicatedextensioncableshouldbeused.

Calibration KitModel Suffix code Option

code Description

SS380G ························· ········· CalibrationkitforMLSSconcentration

— -NN ········· Always“-NN”

Apr.15,2014-00

6


n EXTERNAL DIMENSIONSSS300G MLSS Sensor

Unit:mm

Cable length of 3, 5, 10, 15 or 20 m as standard

F07.ai

ø26

ø36

154

4610

ø32

Note AirbubblesordirtontheMLSSsensorcaninterferewithaccuratemeasurement,especiallyinthelowconcentrationlevel.Forsuchapplications,takeanappropriatemeasure,e.g.,tiltthesensorapproximately30°oraddacleaningsystem.

Hardware for Free-standing Installation

600 Unit: mm

max. 500

min. 236 pitch 4455

65

JIS 50A2-inch stanchion (vertical)

Suspension wire(max. 5m)

F17.ai

Apr.15,2014-00

7

All Rights Reserved. Copyright © 1998, Yokogawa Electric Corporation GS 12E6A1-E Apr.15,2014-00

Jet Cleaning Unit for Free-standing Installation

Suspension wire(max. 5m)

JIS 50A2-inch stanchion (vertical)

Horse for cleaning(max. 10m)

600 Unit: mm

max. 500

min. 236 pitch 4455

65

Approx. 271

84Approx.

105F18.ai

SS400G MLSS ConverterUnit:mm

184

144

72

20

144

220

23 112

4-M6 screws, 8 deep

80

80

36 36

36

38

A B C

D E F

Hood (optional) Option code : /H

Cable inlet port (21 dia. holes)equivalent to DIN PG13.5 cable gland

Ground terminal(M4 screw)

A: Sensor cable inlet portB: Contact input inlet portC: Analog output cable inlet portD: Contact (S1, S2), output cable inlet portE: Contact (S3, FAIL), output cable inlet portF: Power cable inlet port

Weight: approximately 2.5 kgF08.ai

49Adapter

G1/2 screw (/AFTG)1/2 NPT screw (/ANSI)

Approx.55

PackingCase

Cablegland

Note: Adapter for conduit installation are used for five cable inlet ports without sensor cable inlet.

Adapter for conduit installation

CAUTIONInstallation Location of Holders

The holder should be used in a place that is as vibration free as possible. Using the holder in a place where it is affected by vibration, may result in damage to the holder.

(Guide Pipe, Submersion Type, etc)

8


Pipe/Wall Mounting Brackets (Option Code: /U)Weight:approximately0.7kg

Unit:mm

188

174

50

200

100

4-M6 screws

135 13

224

4-M6 screws

200

35

15701003-ø10 holes

Example of bracket used for pipe mounting

Nominal 50 mm (ø60.5 mm)mounting pipe

Example of bracket used for wall mounting

Panel Mounting Brackets (Option Code: /PM)Weight:approximately0.4kg

Unit:mm

4-M6 screws

100

178

137+2 0

137+2 0

12 max. (panel thickness)23

Panel cutout dimensions

Apr.15,2014-00

9


WTB10 Relay Terminal BoxUnit:mm

F13.ai

65126

46

22

±0.270

4-M5 screws, depth 9(for mounting)

178

7559

±0.2

Extension cable inlet (to be drilled for wiring)with cable gland (applicable cable o.d.: ø9 to 12 mm)

Sensor cable inlet (to be drilled for wiring)with cable gland (applicable cable o.d.: ø5.5 to 7 mm) Adapter

Cable gland

Case

NutPacking

49

appr

ox. 5

5

G1/2 (/AWTB) or1/2NPT (/ANSI)

Adapter for Conduit Work

WTB10-SS Terminal Box (first of two)

Dedicated Extension Cable (Not Supplied when Suffix Code “-00” is selected)Unit:mm

F14.ai

LApprox. 5 000Approx. 10 000Approx. 20 000Approx. 30 000Approx. 40 000

WTB10 - SS1 - NN - 05WTB10 - SS1 - NN - 10WTB10 - SS1 - NN - 20WTB10 - SS1 - NN - 30WTB10 - SS1 - NN - 40

Models and Suffix codes

L

40 4080 80

8080

191112131415161718

GreenWhiteRedWhiteBrownWhiteBlackWhiteOrange

GreenWhiteRedWhiteBrownWhiteBlackWhiteOrange

191112131415161718

Approx. 10 mm in diameter Approx. 7 mm in diameter

K9316SRK9316SSK9316STK9316SUK9316SV

P/N

Apr.15,2014-00

10


Pipe Mounting Bracket (Optional)(Option Code: /P)

Unit:mm

48

Nominal 50A(outer diameter ø60.5)pipe(65)

4-M5 screws, depth 9

U-bolt, washer, nut

70100

203

84 - ø5.5 holes

4 - ø10 holes70

47

7570

(254

)

Weight: approximately 700 gF15.ai

Wall Mounting Bracket (Optional)(Option Code: /W)

Unit:mm

(65) 13

4-M5 screws, depth 9

70

185

1527

70100

8

3-ø10 holes

4-ø5.5 holes

75

±1

±1

(236

)

Weight: approximately 300 gF16.ai

WTB10-SS Terminal Box (second of two)

Apr.15,2014-00

11


n WIRING DIAGRAMS

Grounding terminal(M4 screw)

*1

*1

*2

*3

*3

*3 *6

*5

*4

SS400G Converter

F06.ai

31

32

41

42

51

61

62

65

66

63

21

22

25

2326

11

12

13

14

15

16

17

18

19

11

12

13

14

15

16

17

18

19

11

12

13

14

15

16

17

18

19

SENSOR

52

71

S1

S2

mA1

mA2

R1

R2

S3

FAIL72

1

2

3

L1 +

L2 -

G

G

G

Contact output S1 4 to 20mA DC

4 to 20mA DC

Contact input R1 (remote cleaning)

Contact input R2 (remote range switching)

Contact output S2

Contact output S3

Contact output FAIL

Power supply100 to 240V AC or 24V DC ±10%

Terminal box WTB10-SS1

+-

-+

*1: ALWAYSusea6to12mmOD.shieldedcable.*2: ALWAYSground(groundingresistance100Ωorless)thegroundingterminalofthecasingoftheMLSSconverter. (Groundthepowercordinsteadonlyiftheabovegroundingisnotfeasible.DoNOTusetwo-pointgrounding).*3: ALWAYSusea6to12mmOD.cable.*4: UsetheterminalboxonlyiftheMLSSconverterisinstalledseparatelyfromtheMLSSsensor. (Normally,theboxisunnecessary.)*5: Specifythiscableusingthesuffixcodeforaterminalbox.*6: For24VDCpowersupply,connectthe“+”terminaltoL1andthe“-”terminaltoL2.

Subjecttochangewithoutnotice.Apr.15,2014-00

model ss400 mlss analyzer - yokogawa electric · of only six touch-sensitive keys accessible...

Documents