Tokyo Keiso FT-1000 Quick start guide

TG-L111-2E JUN. 2005

SIMPLE, RELIABLE, COST EFFECTIVE

FT-1000/FP-1000

FLOAT TYPE TANK GAUGES

GENERAL

FT-1000/FP-1000isamechanicalfloattypetankgauge.

Twoversionsarealreadyavailableforselection:

FT-1000isastandardtypefloat-tapetankgaugeandthefloatis

normallyguidedbyguidewires.

Ithaswideapplications.

Whereas,FP-1000isapipesealedfloattypetankgaugetheand

indicatorpartistotallyisolatedfromthetank'sinteriorbymagnet

coupling.Thus,FP-1000issuitableforpressurizedtanksand/or

corrosiveliquidtanks.

BothforFT-1000andFP-1000,1mmunitlocalindicationispro-

vided.Also,alarmcontact(s),pneumaticoutput,electricoutputas

wellasdigitalBCDcodetransmitterscanbeequippedforremote

datatransmission.

Comparedtootherprinciples,theseFloattypetankgaugesare

relativelylow-costandreliable,havesimpleconstruction,andare

easytomaintain.

FEATURES

●SIMPLECONSTRUCTION

Puremechanicalaction.Noutilities.Easyinstallationandmainte-

nance

●COSTPERFORMANCE

Comparedtootherprinciples,relativelylow-costmeasurementof

liquidlevelispossible.

● WIDEAPPLICATION

FT-1000/FP-1000coversfromatmospherictankstopressurized

sphericaltanks.Also,byselectingappropriatematerial,theycan

beusedforcorosiveliquids.

●TRANSMITTERSAVAILABLE

Inadditiontolocalliquidlevelindication,differenttypesoftrans-

mitters,i.e.alarmcontact(s),pneumatic,electric,digitalserial

code,etc,canbeprovidedforremoteindication/contorol.

APPLICATIONS

●GENERALCONEROOFTANKS,FLOATINGROOFTANKS

FORCRUDEOIL

Fromcrudeoiltanks,intermediatetankstofinalproducttanksin

Oilrefiningplants.

●HIGHPRESSURETANKSFORLPGANDOTHERS

FT-1000cancoverupto30kg/cm2Gpressuretanks.Theyare

alsousedformediumpressurecylindertanks.

● HEAVYOILTANKSFORTHERMALPOWERSTATIONS

Utilitytanks,Firefightingwatertanks

●CORROSIVELIQUIDTANKS

PipesealedtypeFP-1000coversevencorrosiveliquidtanks.

FT-1000/FP-1000FLOATFLOATTANKGAUGE

2 TOKYO KEISO CO., LTD. TG-L111-2E

OPERATIONPRINCIPLE

AsshowninFig.1

TheFT-1000SeriesLevelGaugeconsistsofaleveldetectingfloat,

transmittingparts(tape,guideelbow,etc.)andtheinstrumentbody.

Theindicatorbodycomprisesthesprocketpulley,tapewinding

pulley,constanttorquespring,gearmachanism,pointerandscale

plate.Whenatransmitterisprovidedforthelevelgauge,thetrans-

mitterisconnectedtothesprocketpulleyshaftoftheindicatorbody

throughthecouplingmechanism.

Thefloatiskeptafloatonthesurfaceoftheliquidwithaconstant

draftline,andfollowsanychangesintheliquidlevel.Thefloatis

connectedtoatapewindingpulley-throughthestainlesssteeltape,

whichispunchedatregularintervals.Theconstanttorquespringis

incorporatedinthetapewindingpulleyinordertoapplyaconstant

torqueinthetapewindingdirection.Thisconstanttorqueisbal-

ancedwiththeweightofthefloatonthesurfaceoftheliquid.

Whenthefloatrisesandlowers,accordingtothechangeinthe

liquidlevel,thetapewhichisinterlockedwiththefloatrotatesthe

sprocketpulley,whichinturnisengagedwiththepunchedtape.

Therotationcorrespondstotheupwardordownwardmovementof

thefloat.Thus,anychangeintheleveloftheliquidisconvertedto

thechangeintherotationangleofthesprocketpulleyshaft.

Thisrotationangleofsprocketpulleyistransferredtotransmitter

unit,i.e.Microswitchalarm,pneumatic,electric,digitalBCDetc.

Throughcouplingunitforremotedatatransmission.

AsshowninFig.2

IntheFP-1000SeriesLevelGauge,thevaporandgasinthetank

aresealedwiththesealpipeandcannotgetintothelevelgauge.

Therefore,thesystemisnotonlycovenientbutsuitabletomeasure

theliquidleveloftanksthatcontainaliquid,liquifiedgasorany

otherhightemperatureliquidthatcangeneratepoisonous,corrosive

orinflammablegasesandodor.Inaddition,thesystemisexcellent

inthatitisnon-corrosive,safeandiseasytomaintain.

IntheFPSeries,theindicatorbodyoftheFT-1000levelgaugefor

lowpressueisused,andasealpipemadeofanon-magnetic

materialisinsertedandfixedinthetank.Thedoughnut-shapedfloat

risesandlowers,withtheaidofthesealpipeasguide,accordingto

thechangeintheliqudlevel.Thefloatcontainsamainmagnet,and

afollowngmagnetwithaslidingrollerisarrangedinthesealpipe.

Thefollowingmagnetisconnectedtothelocallevelindicatorsame

toFT-1000levelgaugebymeansofameasuringtapeinorderto

transmitthechangeintheliquidlevel;tothelevelindicator,which

indicatestheliquidlevel.Ifatransmitterisequipped,theliquidlevel;

canbetransmittedtoaremotecontrolroom.

Installingonthesideatank Constructionofthesealpipeandfloat

Fig.2:OPERATIONPRINCIPLEOFFP-1000

Measuringrange

Locallevel

indicator

Sealpipe

Float(contains

mainmaget)

Measuringtape

Followingmagnet

Mainmagnet

Float

Bottomoftank

Bottompiece

Sealpipe

(Floatguidepipe)

Float

Tank

Liquidsurface

Guideelbow Guideelbow

Measuringtape

Sprocketpulley

Gearmechanism

Pointer-scaleplate

(orcounter)

Constanttorquespring

(Constonspring)

Coupling

Indicatorbodyof

FT-1000Series

LevelGauge

Tapewindingpulley

Level,analog,digital

Levelsignalline,

Alarmsingnalline

Cam

Microswitch

Upper,lowerlimitalarmtransmitter

Trasmitter

Analogconverter/transmitter

Digitalconverter/transmitter

Alarmtransmitter

Fig.1:OPERATIONPRINCIPLEOFFT-1000

FT-1000/FP-1000 FLOATTANKGAUGE

TOKYO KEISO CO., LTD. 3TG-L111-2E

STANDARDSPECIFICATION

Liquiddensity:0.6 〜 1.9

● Measuringrange : 0 〜 3m

0〜5m

0〜10m

0〜15m

0〜20m

0〜25m

(Max.0 〜 10mforFP-1000pipesealtype)

● Localindication : ① 2pointerdial(mandmmunit)or

②Digitalcounterwithvernierdialfor

mmunitor

③Specialgraduation

①,②:Min.indicationunit;1mm

●Indicationaccuracy* : FT-1000:± 3mm

FP-1000:± 5mm

*Onreferencecondition,subjectto

installationconditionsontotanks

MODELCODE

●Operatingpressure : ① Atmospheric(Testpress.0.2kg/

cm2G

② MediumPress.(Max.10kg/cm2G)

③ HighPress.(Max.20kg/cm2G)

④ HighPress.(Max.30kg/cm2G)

●Liquidtemp. : FT-1000 ―196 ＋ 400℃

FP-1000 0 〜＋ 150℃

● Installationontotanks: StandardBy40mm(1-1/2")screwor

flange*

*1) Flangesonlyforguidepipes

ofFP-1000

*2) 50mm(2")orlargerflangesforPVC

guidepipeversion

● Indicatorenclosure : Watertight(IP54)

●Finish : Silver(std.)

● Floatoperation : Windingupmechanismisprovidedas

standard.Itcanbeusedforrepeatabil-

itychecking.

TYPE

INDICATION

TRANSMITTER

PRESS,RATING,CONNECTION

Float-tapetype

Pipe-sealtype

2pointerdial

Digitalcounterwithvernierdial

Specialgraduation

Notransmitterprovided

Transmitterprovided

Transmitterfittingprovided

Atmospheric,Screwconnection

Atmospheric,Flangeconnection

MediumPress.,Flangeconnection(Max.10kg/cm2G)

HighPress.,Flangeconnection(Max.20kg/cm2G)

HighPress.,Flangeconnection(Max.30kg/cm2G)

DESCRIPTION

–1

*1:Volumegraduationandothersonrequest

*2:OnlyforFT-1000float-tapetypes.FP-1000(Pipesealingtype)isflangeconnectiononly.

Standardtype(Atmospheric)(Counterindication)

Countertypeindication

FT-12 □□

High-Pressuretype

2pointerdialindication

FT-11 □□

FT-1000/FP-1000FLOATFLOATTANKGAUGE

4 TOKYO KEISO CO., LTD. TG-L111-2E

①ForGeneralConeRoofTanks(FT-1000)

SCOPEOFSUPPLY,INSTALATIONEXAMPLE,DIMENSIONS

②ForfloatingRoofTanks(FT-1000)

No PartDescription Q'ty

Standardmaterial



Optionallyavailablematerial

 Remarks

① Indicator 1 ADC12 SCS13*1,SCS14*1

② Measuringtape 1 SUS316 —

③ 90°guideelbow 2 ADC12*2 SCS13,SCS14

④Float 1 SUS304

SUS316,SCS316L,PVC



Standardφ400mm

⑤ Guidewireknob 2

FC250/SUS304

SUS304/SUS304,SUS316/SUS316



⑥Guidewire 2 SUS304 SUS316,Tefloncovered

φ3mm(7×7Stranded)

⑦ Bottompiece 2 SUS304 SUS316,SUS316L

⑧Indicatorsupport ———

Customer'sscope*3



⑨

Tapeprotectionpipe

———

Customer'sscope*3



⑩Pipesupport ———

Customer'sscope*3

*1:Shapeofindicatormaydifferforcaststainlesssteelversions.

*2:FC250(Castediron)forflangeconnectionversions

*3:Availableonrequest

No PartDescription Q'ty

Standardmaterial



Optionallyavailablematerial

 Remarks

① Indicator 1 ADC12 —

② 90°guideelbow 2 ADC12*2 —

③Wireguide 1 SS400/PVC —

④ Guidebush 1

SUS304/PTFE

—

⑤Measuringtape 1 SUS316



—

⑥ Tape-wirejoint 1 SCS13 —

⑦ Measuringwire 1 SUS316 —

⑧Float 1 SUS304 SUS316,SUS316L

Standardφ400mm

⑨ Indicatorsupport



———

Customer'sscope*2



⑩

Tapeprotectionpipe

———

Customer'sscope*2

⑪Pipesupport ———

Customer'sscope*2



*1:FC250(Castediron)forflangeconnectionversions

*2:Availableonrequest

TankHeightH

FT-1000/FP-1000 FLOATTANKGAUGE

TOKYO KEISO CO., LTD. 5TG-L111-2E

③ForGasHolderTanks(FT-1000)

④ForTankTopmInstallation(FT-1000)

No PartDescription Q'ty

Standardmaterial



Optionallyavailablematerial

Remarks

① Indicator 1 ADC12 —

② 90°guideelbow 2 ADC12*1 —

③Wireguide 1 SS400/PVC —

④ Measuringtape 1 SUS316 —

⑤ Tape-wirejoint 1 SCS13



—

⑥ Measuringwire 1 SUS316 —

⑦Wirejoint 1 SUS304 —

⑧Indicatorsupport ———

Customer'sscope*2

⑨

Tapeprotectionpipe

———

Customer'sscope*2

⑩Pipesupport ———

Customer'sscope*2

*1:FC250(Castediron)forflangeconnectionversions

*2:Availableonrequest

*3:LifeofConstonSpring:Approx,12,000trips

No PartDescription Q'ty

Standardmaterial



Optionallyavailablematerial

Remarks

① Indicator 1 ADC12 —

② Guidewireknob 2

FC250/SUS304



SUS304/SUS304,SUS316/SUS316

③ Guidewire 2 SUS304

SU316,TEFLONCovered

φ3mm(7×7stranded)

④Measuringtape 1 SUS316 —

⑤Float 1 SUS304



SUS316,SCS316L,PVC



Standardφ400mm



⑥Bottompiece 2 SUS304 SUS316,SUS316L

MeasuringRange

TankHeightH

FT-1000/FP-1000FLOATFLOATTANKGAUGE

6 TOKYO KEISO CO., LTD. TG-L111-2E

⑤ForHigh-Pressure,SphericalTanks(FT-1000)

⑥PipeSealingtype(FP-1000)

6-1Tanktopinstallation 6-2Tanksideinstallation

No PartDescription Q'ty

Standardmaterial



Optionallyavailablematerial

 Remarks

① Indicator 1 SC480 SCS13,SCS14

②Measuringtape 1 SUS316 —

③ 135°guideelbow 2 SC480 SCS13,SCS14

④ 90°guideelbow 1 SC480 SCS13,SCS14

⑤Float 1 SUS304



SUS316,SUS316L

Standardφ400mm



⑥Tape-wirejoint 1 SCS13 —

⑦Measuringwire 1 SUS316 —

φ1.6mmstranded



⑧Guidewireknob 2 STPG370 SUS304,SUS316 

⑨ Guidewire



2 SUS304 SUS316

φ3mm(7×7stranded)

⑩ Bottompiece 2 SUS304 SUS316,SUS316L

⑪ Shut-Offvalve 1 SCS13 SCS14



⑫



Indicatorsupport



———

Customer'sscope*1



⑬



Tapeprotectionpipe



———

Customer'sscope*1



⑭



Pipesupport ———

Customer'sscope*1

*1:Availableonrequest

 No. PartDescription Optionallyavailablematerial Remarks

*1:FC250(Castediron)forflangeconnectionversions

*2:Availableonrequest

① Indicator 1 1 ADC12 —

② 90°guideelbow —2ADC12*1 —

③ Guidepipeass'y 1 1 SUS304 SUS316,SUS316L,PVC

④ Measuringtape 1 1 SUS316 —

⑤ Followingmagnet 1 1 —



—

⑥ Float 1 1 SUS304 SUS316,SUS316L,PVC Standardφ400mm

⑦ Bottompiece 1 1 SUS304 SUS316,SUS316L,PVC

⑧ Indicatorsupport ————

Customer'sscope*2

⑨ Tapeprotectionpipe



————

Customer'sscope*2

⑩ Pipesupport ———

Customer'sscope*2

Q'ty Standard

material

(Tanktop)

(Tankside)

FT-1000/FP-1000 FLOATTANKGAUGE

TOKYO KEISO CO., LTD. 7TG-L111-2E

COMPORNENTSforAtmosphericapplication(FT-1 □□ 1)

①INDICATORBODY ⑤ HOISTINGMECHANISM

②GASKET ⑥UNION

③REARCOVER ⑦STUD-BOLT&NUT

④INDICATIONUNIT ⑧ CONNECTIONFLANGE

90GUIDEELBOW BOTTOMPIECE

GUIDEWIREKNOBFLOAT

INDICATOR

①INDICATORBODY ⑤ HOISTINGMECHANISM

②GASKET ⑥UNION

③REARCOVER ⑦PLUG

④INDICATIONUNIT ⑧ TRASMITTERCONNECTOR

90GUIDEELBOW 135GUIDEELBOW

FLOAT BOTTOMPIECE

GUIDEWIREKNOB SHUT-OFFVALVE

INDICATOR

COMPORNENTSforMediumandHighpressureapplication(FT-1 □□ 4)

FT-1000/FP-1000FLOATFLOATTANKGAUGE

8 TOKYO KEISO CO., LTD. TG-L111-2E

COMPONENTSforFloatingRoofTankapplication(FT-1 □□ 2)

CONPONENTSforpipeSealingtype(FP-1000)

INDICATOR FLOAT

90GUIDEELBOW WIREGUIDE

TAPE-WIREJOINT BUSHINGASSEMBLY

FOLLOWINGMAGNET

FLOAT

GUIDEPIPEASSEMBLY

90GUIDEELBOW

INDICATOR

FT-1000/FP-1000 FLOATTANKGAUGE

TOKYO KEISO CO., LTD. 9TG-L111-2E

SEALINGPOT

Fortoxic,corrosiveandinflammablevapourproducingliquidtanks

U-shapedorV-shavedsealingpotisnormallyprovidedtoisolate

tankinsideandindicatormechanismasshownbelow.

Non-evaporatingliquids.i,e,siliconeoil.Spindleoil,paraffinoiletc,

areused.

VShapedSealPot

SPECIALVERSIONS

●ANCHORWEIGHTTYPE

Toinstallontoexistingtankswithoutwelding,Anchorweightsystem

isoffered.ByutilizingManholecoveronthetankroof,guidewires

arehungfromtanktop.

UShapedSealPot

●CHAMBERGUIDE,SMALLSIZEDFLOATTYPE

Forundergroundconcretepits,etc.,6"internalchamberisprovided

toguidefloat.Smallsizedfloatof135mmdiameterisnormally

used.

Flangeorscrew

Standard400

SGP,SUS304,SUS316,AC2A,FC250,SCS13,SCS14

Suppliedbycustomer

Approx.1L

Processconnection

Shut-offPressure(mmH

O)

Material

Sealingliquid

Volumeofsealingliquid

FT-1000/FP-1000FLOATFLOATTANKGAUGE

10 TOKYO KEISO CO., LTD. TG-L111-2E

TRANSMITTERS

DifferenttypesoftransmitterscanbeattachedontoFT-1000/FP-1000tankgauges.Inadditiontolocallevelindication,remoteindication/

contorolispossible

Toidentifythedescriptionoftankgaugeswithtransmitter,modelcodeoftransmitterisaddedafterthemodelcodeoftankgaugeasfollows:

□1ALARMTRANSMITTERS

No.ofalarmpoint : Max.6point

Typeofswitch : SPDTMicroswitch

Contactcapacity : AC250V,5A,DC125V,0.4A

Costruction : Weatherproof(TypeW)

FLAMEPROOFEXdIICT6,TypeEX

(d2G4,TypeE)orIntrinsicallysafe

(i3aG5TypeS,Safetyrelaytobeused)

Cableentry : G1/2orG3/4

Weatherproof(TypeW)andIntrisicallysafe(TypeS)

LiquidleveldataisconvertedintoDC4 〜 20mAsignalforspanand

output.

Continuousleveldatamonitoringatremotelocationispossible.

Signalconversion : ByR/Iconverter＋Potentio-meter

Output : DC4 〜 20mA

Max.Load : Max.500 Ω(atDC24V)

Construction : Weatherproof(TypeW)

FLAMEPROOFEXdIICT6,TypeEX

(d2G4,TypeE)orIntrinsicallysafe

(i3aG5TypeS,Safetyrelaytobeused)

Cableentry : G1/2orG3/4

Weatherproof(TypeW)andIntrisicallysafe(TypeS)

FLAMEPROOF(TYPEEX)

OUTPUT

ALARMPOINT

CONSTRUCTION

CABLEENTRY

DC4〜20mAonly

DC4〜20mA+Alarmcontact



1POINT

2POINT

3POINT

4POINT

WEATHERPROOF

FLAMEPROOF(EXdIICT6)

INTRINSICALLYSAFE(i3nG5)*1

CABLEGLAND*2

CONDUIT

OTHERS

DESCRIPTION

–B

–C

–F

*1:NoalarmcanbeaddedtoISversion.

*2:EX)Standard

 Cableouterdiameter G1/2...φ9〜11,

 G3/4...φ12〜14

 S,W)Option

MODEL CODE

TR-2 –

FLAMEPROOF(TYPEEX)

□2ELECTRICTRANSMITTERS

NO.OFALARMPOINT

CONSTRUCTION

CABLEINTRODUCTION

1POINT

2POINT

3POINT

4POINT

5POINT

6POINT

WEATHERPROOF

FLAMEPROOF(EXdIICT6)

INTRINSICALLYSAFE(i3nG5)*1

CABLEGLAND*2

CONDUIT

OTHERS

DESCRIPTION

–B

–C

–F

*1:Safetyrelayseparatelytobeprovided

*2:EX)Standard

 Cableouterdiameter G1/2...φ9〜11,

 G3/4...φ12〜14

 S,W)Option

MODEL CODE

TR-10 –

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