FlowLine Thermo-Flow FT10-1305 User manual

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2of14 FT900003 RevA1
INTRODUCTION/TABLEOFCONTENTS StepOne
Offered in liquid and gas sensor types, the general purpose flow switch provides reliable low or no‐flow
detectionofrelativelyclean,non‐coatingmediawithone1Arelayoutput.Liquidexamplesincluedwaterand
aceticacid.AvailableinPolypropylene‐Ryton®orPVDF,theshortflowsensorisusedinpipeorductingfrom
½”to1‐1/2”,andthelongflowsensorisusedin2”andup.Theflowswitchsetpointmaybeadjustedfrom
0.04to3fpsinliquidsor1to90fpsingasesasalow‐flowalarm.Theflowsensorisbestappliedin
applicationswithrelativelyconstanttemperatures.
NewFeatures
 RuggedPolypropylene‐Ryton®orPVDFsensorforcorrosiveliquidsandgasses.
 AdjustablesetpointwithLEDforfloworno‐flowstatusindication.
 60VArelayselectableNOorNCviapowersupplywiringpolarity
 SolidStatesensorisnotdamagedbyover‐rangingflowvelocities.
TableofContents
Specifications:.........................................................................................................................................................3
 MakeaFail‐Safesystem:............................................................................................................................3
Dimensions:.............................................................................................................................................................4
 Configurations:............................................................................................................................................4
SafetyPrecautions:................................................................................................................................................5
Introductions:..........................................................................................................................................................6
 Technology:.................................................................................................................................................6
Installation:.............................................................................................................................................................7
Wiring:.....................................................................................................................................................................8
 WiringtoaFlowlineController:..................................................................................................................8
 WiringtheRelayoutput:.............................................................................................................................9
 WiringasaP‐ChannelorN‐ChannelOutput:...........................................................................................10
Calibration:............................................................................................................................................................11
 SetPoint:...................................................................................................................................................11
Maintenance: .......................................................................................................................................................12
 CleaningProcedure:..................................................................................................................................12
 TestingtheSensor(FT10SeriesOnly):.....................................................................................................12
 TestingtheSensor(GT10SeriesOnly):.....................................................................................................13
Warranty:..............................................................................................................................................................14



RevA1 FT900003 3of14
SPECIFICATIONS StepOne
Setpointrange: FT10:.04to3fps(.012to.91mps)
 GT10:1to.90fps(.3to27mps)
Factorysetpoint: FT10:.2fps(.06mps)
 GT10:10fps(3mps)
Repeatability: ±.5%ofsetpoint@fixedtemp.
Responsetime: 1‐10seconds
Setpointadjust.: Potentiometer
LEDindication: FlowStatus
Viscosityrange: 1‐200centipoise(FT10only)
SupplyVoltage: 14‐36VDC
Consumption: 70mAmaximum
Contacttype: (1)SPSTrelay
Contactrating: 60VA,1Amax
Contactoutput: SelectableNO/NC
Processtemp.: F:32°to140°
 C:0°to60°
Electronicstemp. F:‐40°to140°
 C:‐40°to60°
Pressure: 150psi(10bar)@25°C.,derated@1.667
psi(.113bar)per°C.Above25°C.
Sensorrating: NEMA4X(IP65)
SensorMaterial: 1__5:PP‐Ryton®
 5__5:PVDF
Cablejacketmat.: 1__5:PP
 5__5:FEP
Cabletype: 4‐conductor,#22AWG(shielded)
Cablelength: Standard:10’(3m)
 Specialorder:25’(7.6m)or50’(15.2m)
Processmount: 3/4"NPT(3/4”G/R)
Mount.Gasket: Viton®(Gversiononly)
Classification: Generalpurpose
CEcompliance: EN61326EMC
 EN61010‐1safety





MakeaFail‐SafeSystem:Design a fail‐safe systemthat accommodatesthe possibility of switch and/or
powerfailure.FLOWLINErecommendstheuseofredundantbackupsystemsandalarmsinadditiontothe
primarysystem.Addingaredundantalarmswitchtothesystemisacosteffectivemeanstopreventcostly
run‐dryissues.


4of14 FT900003 RevA1
DIMENSIONS StepOne
LongSensor(FT10‐_4__orGT10‐_4__)

ShortSensor(FT10‐_3__orGT10‐_3__)

Configurations(LiquidFlowSwitches):
Part
Number Length Material (body)
Material
(cable)
Thread
(insidexoutside)
FT10‐1305 Short(3”) PP‐Ryton® Polypropylene ¾”NPTx¾”NPT
FT10‐1325 Short(3”) PP‐Ryton® Polypropylene ¾”Rx¾”R
FT10‐1405 Long(4.5”) PP‐Ryton® Polypropylene ¾”NPTx¾”NPT
FT10‐1425 Long(4.5”) PP‐Ryton® Polypropylene ¾”Rx¾”G
FT10‐5305 Short(3”) PVDF FEP ¾”NPTx¾”NPT
FT10‐5325 Short(3”) PVDF FEP ¾”Rx¾”R
FT10‐5405 Long(4.5”) PVDF FEP ¾”NPTx¾”NPT
FT10‐5425 Long(4.5”) PVDF FEP ¾”Rx¾”G
Configurations(GasFlowSwitches):
Part
Number Length Material (body)
Material
(cable)
Thread
(insidexoutside)
GT10‐1305 Short(3”) PP‐Ryton® Polypropylene ¾”NPTx¾”NPT
GT10‐1325 Short(3”) PP‐Ryton® Polypropylene ¾”Rx¾”R
GT10‐1405 Long(4.5”) PP‐Ryton® Polypropylene ¾”NPTx¾”NPT
GT10‐1425 Long(4.5”) PP‐Ryton® Polypropylene ¾”Rx¾”G
GT10‐5305 Short(3”) PVDF FEP ¾”NPTx¾”NPT
GT10‐5325 Short(3”) PVDF FEP ¾”Rx¾”R
GT10‐5405 Long(4.5”) PVDF FEP ¾”NPTx¾”NPT
GT10‐5425 Long(4.5”) PVDF FEP ¾”Rx¾”G


RevA1 FT900003 5of14
SAFETYPRECAUTIONS StepTwo
AboutthisManual:PLEASEREADTHEENTIREMANUALPRIORTOINSTALLINGORUSINGTHISPRODUCT.
ThismanualincludesinformationonallmodelsofFlowlineThermo‐Flo™FlowSwitches:FT10andGT10series.
Please refer to the part number located on the switch label to verifytheexactmodelwhichyouhave
purchased.
User’sResponsibilityfor safety:Flowline manufacturesa widerangeof flowswitches andtechnologies,
whileeachofthesesensorsisdesignedtooperateinawidevariety of applications, it is the user’s
responsibilitytoselectasensormodelthatisappropriatefortheapplication,installitproperly,performtests
oftheinstalledsystem,andmaintainallcomponents.Thefailuretodosocouldresultinpropertydamageor
seriousinjury.
Proper Installation and Handling:  Because this is an eclectically operated device, only properly trained
staffshouldinstalland/orrepairthisproduct.Useapropersealantwithallinstallations.Note:Alwaysinstall
the3/4” Viton gasket withallversionsof Thermo‐Flo™ with metricthreads. TheG threaded versionwillnot
seal unless the gasket is properly installed. Never over tighten the sensor within the fitting, beyond a
maximumof80inch‐poundstorque.Alwayscheckforleakspriortosystemstart‐up.
MaterialCompatibility:TheFT10andGT10seriessensorsareavailableintwodifferentwettedmaterials.
ModelsFT10‐1__5andGT10‐1__5aremadeofPolypropylene(PP)withRyton®tips.ModelsFT10‐5__5and
GT10‐5__5 are made of Polyvinylidene Fluoride (PVDF). Make sure that the model you have selected is
compatiblewiththeapplicationliquid. Todetermine thechemicalcompatibility between thesensorandits
application liquids, refer to an industry reference such as the Compass Corrosion Guide (available from
CompassPublications).
WiringandElectrical:Thesupplyvoltageusedtopowerthesensorshouldneverexceedamaximumof36
voltsDC.Electricalwiringofthesensorshouldbeperformedinaccordancewithallapplicablenational,state,
andlocalcodes.
Flammable, Explosive and Hazardous Applications:  DO NOT USE THE FT10 OR GT10 SERIES GENERAL
PURPOSEFLOWSWITCHESINHAZAROUSLOCATIONS.
Warning 
Theratingfortherelayis60VA,1Ampmax.
Flowline’s Thermo‐Flo™ flow switches are not recommendable for use with electrically charged
application liquids. For most reliable operation, the liquid being measured may need to be
electricallygrounded.
Thesensingtipofthesensormustalwaysbesubmersedintheliquidandneverexposedtoair.
Theliquidtemperaturemustremainconstantandnotchangethroughouttheprocess.



6of14 FT900003 RevA1
INTRODUCTION StepThree
Technology:Thethermaldispersionflowswitchesmeasureliquidorgastemperaturetodeterminechanges
in flow velocity.  As fluid flows across the sensing tips, the temperature is reduced proportionately as a
functionoftheflowrate.Whenatemperatureorvelocityshiftreachestheuserdefinedsetpoint,theswitch
changesstateindicatingtheappropriateflowcondition(flowofno‐flow).
FLOWLINE’ssophisticatedelectronicsconvertthetemperatureshift into a signal which indicates whether a
floworno‐flowconditionoccurs.Dependingonhowthesensoriswired,thissignalmaybewiredfornormally
openornormallyclosedcircuits.
FLOWLINE’s Thermo‐Flo™ flow switches have no moving parts to clogorfoul,makingthemsuitablefora
verityof applications, includingnon‐coating andnon‐scaling liquids. The FT10series directlymeasure mass
flowandcanoperateoverboardrangeofliquidsfrom0.4to1.2specificgravityand1to300cp.
InitializingSequence for FT10series:  When the flow switch is powered up whilesubmersed, theFT10 will
immediatelyindicate flowbefore switching toits correctstate.Atimedelaymaybeusedtoeliminatethe
initializationsequence.Flowline’sthermaldispersionrelaycontrollersfeaturea0to60secondtimedelayfor
yourconvenience.
SetPoints:TheFT10liquidflowswitchsetpointisfactorycalibratedto0.2fpsandtheGT10gasflowswitch
aresetto10fps.Toconvertfeet/sectoGPM,pleaserefertothechartbelow.
FT10
FlowRatevs.Velocity
(gpmvs.fps)

GT10
FlowRatevs.Velocity
(cfmvs.fps)



RevA1 FT900003 7of14
Installation StepFour

TheFT10seriesflowswitchmustalwaysbeincontactwiththe
liquidbeingmeasured.TheGT10seriesflowswitchmustnever
besubmersedinliquid.Bothflowswitchesfeaturea3/4”NPT
threads which will allow it to be used with various types of
fittings. Be sure to check the insertion depth of the flow
switchinthefittingafteritisinstalled.Seethediagramtothe
rightfortherecommendedinsertiondepth.
 Thetwotipofthesensoraretobeperpendicularto
theflow(asseentotheright).Nevermountthetips
withoneinfromtoftheother.

Whenusinganytypeoffitting,theorientationaswellasthe
insertion depth of the flow switch in the pipe is critical. See
the diagram to the right for the recommended orientation.
Bestlocationforinstallationwillbealongthetopofthepipe.

Warning 
Theflowswitchtipshaveathinplasticwallwhichmaybedamagedifdroppedorinstalledimproperly.
TheFT10flowswitchisdesignedforuseinliquid.Forbestresults,avoidinstallingtheFT10wherebubbles
arepresentorwherethetipsoftheswitchmaybeoutoftheliquid.
The GT10 flow switch is designed for us in gas applications. For best results, avoid installing the GT10
whereitmaybesubmersedinliquid.
Always install the Viton gasket with all versions of the FT10‐__2_. The G threaded version will not seal
unlessthegasketisproperlyinstalled.
Thetwo temperatureprobes (tips) mustalways be perpendiculartotheflow(seetheflowatthesame
time).


8of14 FT900003 RevA1
WIRING StepFive

SupplyVoltage:ThesupplyvoltagetotheThermo‐Flo™flowswitchshouldneverexceedaminimumoutput
of14VDCormaximumoutputof36VDC.
RequiredCable Length: Determine thelengthof thecablerequired betweenthe Thermo‐Flo™flowswitch
anditspointoftermination.Allowenoughslacktoensuretheeasyinstallation,removaland/ormaintenance
ofthesensor.Thecablelengthmaybeextendeduptoamaximumof1000ft,usingawell‐insulated,14to20
gaugeshieldfourconductorcable.
WireStripping:Usinga10gaugewirestripper,carefullyremovetheouterlayerofinsulationfromthelast1‐
1/4”ofthesensor’scable.Unwrapanddiscardtheexposedfoilshieldfromaroundthesignalwires,leaving
thedrainwireattachedifdesired.Witha20gaugewirestripper,removethelast1/4”ofthecolored
insulationfromthesignalwires.
SignalOutput(RelaySwitching):
Allows the sensor to switch a small load on or off
directly, using an internal relay rated below 60 VA.
TheNO/NCstatusissetbythepolarityofthevoltage
feedingtheredandblackwires.Thegreenwireisthe
commonfortherelayandthewhitewireistheNOor
NC,dependingonthepolarityofredandblack.
NormallyOpenWiring:

WiringtoaFlowlineController:
LC80SeriesController

LC30SeriesController




RevA1 FT900003 9of14
WIRING StepSix

WiringtheRelayOutput:TheThermo‐Flo™relayoutputcanbewiredasadrycontacttoaVDCorVACpower
source.TheThermo‐Flo™doesrequire14‐36VDCpowertooperatethesensorandswitchtherelay.All
installationsbelowidentifyadryswitchstateasthenormalpositionoftherelay.
SwitchingaNormallyOpenDCLoad(OpenduringFlow,ClosedduringNo‐Flow):
The Red wire connects to Positive (+) of the power
supplyandtheBlackwireconnectstoNegative(‐).The
LOAD can be attached to either the Green or White
wires.CompletethecircuitbyconnectingtheGreento
(+) VDC power or White to (‐) VDC power (see
illustrationtotheright).

SwitchingaNormallyClosedDCLoad(ClosedduringFlow,OpenduringNo‐Flow):
The Black wire connects to positive (+) of the power
supplyandtheRedwireconnectstoNegative(‐).The
Load can be attached to either the Green or White
wires. Complete the circuit by connecting the Green
to(+)VDCpowerorWhiteto(‐)VDCpower(see
illustrationtotheright).

SwitchingaNormallyOpenACLoad(OpenduringFlow,ClosedduringNo‐Flow):
TheRedwireconnectstoPositive(+)oftheDCpower
supplyandtheBlackwireconnectstoNegative(‐).The
LOADcanbeattachedtotheGreenwireandtheHotof
the VAC power. Connect the white to the Neutral of
the VAC power (see illustration to the right).  Low
voltageVACislessthan36VAC.

SwitchingaNormallyClosedACLoad(ClosedduringFlow,OpenduringNo‐Flow):
The Black wire connects to Positive (+) of the DC
powersupplyandtheRedwireconnectstoNegative
(‐).TheLOADcanbeattachedtotheGreenwireand
theHotoftheVACpower.ConnecttheWhitetothe
NeutraloftheVACpower(seeillustrationtothe
right).LowvoltageVACislessthan36VAC.

ForallSensorWiringdiagramsabove:
SensorPower:RedandBlackWires(36VDCMax.)
RelayRating: GreenandWhiteWires(60VA,1AMax.)







10of14 FT900003 RevA1
WIRING StepSeven
Wiring as a P‐Channel or N‐Channel output:  The Thermo‐Flo™ can be substituted for either a P‐Channel
(PNP,Sourcing)outputorN‐Channel(NPN,sinking)output.
NormallyOpenDCLoadasaP‐ChannelOutput(OpenduringFlow,ClosedduringNo‐Flow):
To wire as a NO P‐Channel output follow the
directions below. The Red Wire connects to Positive
(+)of the power supply andthe Black wireconnects
toNegative(‐).TheGreenwireisjumpingtotheRed
wirewhiletheWhitewireisconnectedtotheLOAD.
JumpertheLOADbacktotheNegative(‐)tocomplete
thecircuit.


NormallyClosedDCLoadasaP‐ChannelOutput(ClosedduringFlow,OpenduringNo‐Flow):
To wire as a NC P‐Channel output, follow the
directionsbelow.TheBlackwireconnectstoPositive
(+)ofthepowersupplyandtheRedwireconnectsto
Negative (‐). The Green wire is jumping to the Black
wirewhiletheWhitewireisconnectedtotheLOAD.
JumpertheLOADbacktotheNegative(‐)tocomplete
thecircuit.


NormallyOpenDCLoadasaN‐ChannelOutput(OpenduringFlow,ClosedduringNo‐Flow):
To wire as a NO N‐Channel output, follow the
directions below. The Red wire connects to Positive
(+)of the power supply andthe Black wireconnects
toNegative(‐).ThewhitewireisjumpingtotheBlack
wirewhiletheGreenwireisconnectedtotheLOAD.
JumpertheLOADbacktothePositive(+)tocomplete
thecircuit.


NormallyClosedDCLoadasaN‐ChannelOutput(ClosedduringFlow,OpenduringNo‐Flow):
To wire as a NC N‐Channel output, follow the
directionsbelow.TheBlackwireconnectstoPositive
(+)ofthedirectionsbelow.TheBlackWireconnects
toNegative(‐).ThewhitewireisjumpingtotheRed
wirewhiletheWhitewireisconnectedtotheLOAD.
JumpertheLOADbacktoPositive(+)tocompletethe
circuit. 

ForallSensorWiringdiagramsabove:
SensorPower:RedandBlackWires(36VDCMax.)
RelayRating: GreenandWhiteWires(60VA,1AMax.)

