Dwyer Series TSP User manual

MN890660A 1of16

SeriesTSP

FlowSwitchController

Owner’sManual

DwyerInstruments,Inc.

102IndianaHwy.212

(P.O.Box373)

MichiganCity,IN46360(46361)USA

www.Dwyer‐Inst.com

2of16  MN890660A

INTRODUCTION/TABLEOFCONTENTS StepOne

Thegeneralpurposeflowswitchpackageprovidesreliablenoorlow‐flowdetectionofrelativelycleannon‐

coating media with a 16A SPDT compact flow controller for pump or process protection.  Liquid examples

includewaterandsulfuricacid.Theoptionalflashalarmbrings attention to low‐flow alarm conditions.

Available in Polypropylene‐Ryton® or Polyvinylidene Fluoride (PVDF), the short flow sensor is used in pipe

from½”to1‐1/2”,andthelongconfigurationisusedin2”andup.Theflowswitchsetpointmaybeadjusted

from0.04fpsto3fpsinliquidsforlow‐flowcontrol.Theflow sensor is best applied in applications with

relativelyconstanttemperature.

Features

 RuggedPolypropylene‐Ryton®orPolyvinylideneFluoridesensorforcorrosiveliquidsandgases.

 Fail‐Saferelaycontrolofpumps,valvesoralarmswitha0.15to60seconddelay

 Optionalflashingalarmbringsimmediateattentiontolevelalarmconditions.

 PolypropyleneenclosureratedNEMA4Xwithswivelbaseforconduitalignment.

 InvertswitchchangesrelaystatefromNOtoNCwithoutrewiring.

 ACpowered

TableofContents

Specifications:.........................................................................................................................................................3

 Dimensions:.................................................................................................................................................4

Components:...............................................................................................................................................4

SafetyPrecautions:.................................................................................................................................................5

MakeaFail‐SafeSystem:............................................................................................................................6

GettingStarted:.......................................................................................................................................................7

 GuidetoControls:.......................................................................................................................................7

Electrical..................................................................................................................................................................8

 ConnectingSwitchestoInputTerminals:...................................................................................................8

 VACPowerInputWiring:............................................................................................................................8

 Changingfrom120to240VAC...................................................................................................................8

 RelayInputWiring:.....................................................................................................................................9

 FlashAlarmOutput:....................................................................................................................................9

Installation............................................................................................................................................................10

 MountingonaSensor:..............................................................................................................................10

FlowSwitchCalibration:.....................................................................................................

..................................11

 SetPoints:.................................................................................................................................................11

 AccessingtheAdjustmentPotentiometer:...............................................................................................11

ApplicationExamples............................................................................................................................................12

 LowFlowAlarm:........................................................................................................................................12

 LEDIndication:..........................................................................................................................................12

Appendix...............................................................................................................................................................13

 ControllerLogic.........................................................................................................................................13

 Troubleshooting........................................................................................................................................13

Maintenance:........................................................................................................................................................14

 CleaningProcedure:..................................................................................................................................14

 TesttheFlowSwitch:................................................................................................................................15

 LEDIndication:..........................................................................................................................................15

Warranty...............................................................................................................................................................16



MN890660A  3of16

SPECIFICATIONS/DIMENSIONS/COMPONENTS StepTwo

Setpointrange: .04to3fps(.012to.91mps)

Factorysetpoint: .2fps(.06mps)

Viscosityrange: 1to200centipoise

Repeatability: ±.5%ofsetpoint@fixedtemp.

Responsetime: 1to10seconds

Setpointadjust.: Potentiometer

LEDindication: Power,relayandsensorstatus

Supplyvoltage: 120/240VAC@50‐60Hz.

Consumption: 0.25Amaximum

Contacttype: (1)SPDTRelay

Contactrating: 250VAC@16A,½Hp

Contactoutput: SelectableNOorNC

Contactdelay: 0.15‐60seconds

Processtemp.: F:32°to140°/C:0°to60°

Ambienttemp.: F:‐40°to140°/C:‐40°to70°

Pressure: 150psi(10bar)@25°C,derated@

1.667psi(0.113bar)per°Cabove

25°C.

Enclosurerating: NEMA4X(IP65)

Enclosurematerial: PP(U.L.94VO)

 w/flashalarm: PP(U.L.94VO&PC)

Conduitentrance: Single,1/2"NPT

Wettedmaterial: TSP1__:PP‐Ryton®

TSP2__:PVDF

Enclosuremount.: 3/4”NPT

Enclosurerotation: 300°swivelbase

Classification: Generalpurpose

Certificatenumber: LR79326‐3

CEcompliance: EN61326EMC

 EN61010‐1Safety

FlashAlarm

Flashtype: Xenontube

Flashfrequency: 1persecond

Strobelife: 10Mcycles

Supplyvoltage: 120VAC,50‐60Hz.

Consumption: 3Wattsmax.

Material: Polycarbonate

Enclosurerating: NEMA4X(IP65)

Color: Amber



ControllerLabels



FunctionalDiagram

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4of16  MN890660A

SPECIFICATIONS/DIMENSIONS/COMPONENTS StepTwo

Dimensions

LongSensor



ShortSensor



LongSensorwithFlashAlarm



ShortSensorwithFlashAlarm



About the Liquid Flow Controller:  Dwyer Instrument’s TSP series is a single‐point mounting system for

installing one flow sensor within a pipe or fume.  The compact relay controller features a 120/240 VAC

controllerwitha250VAC,16A,1/2HpSPDTrelaycontract.

Part

Number

CE Thread

Flash

Alarm

Sensor

Material

Sensor

Length

Application

Media

TSP110

Yes

¾”

NPT

No

PP&

Ryton®

Short

Liquid

TSP120 Long

TSP210

PVDF

Short

TSP220 Long

TSP110S

No Yes

PP&

Ryton®

Short

TSP120S Long

TSP210S

PVDF

Short

TSP220S Long

 Owner’sManual

RelayController:Theflowswitchispre‐wiredbeforeshipmenttothe3‐poleterminalstrip[Input1(+),(‐)&

(S)].ThetechnologyusedtoindicateflowisThermalDispersion.TheLiquidFlowControllerprovidesa1/2”

Conduitconnectionand6polesforwireterminationofpowerandrelaycontact.UsetheAC,ACandGND

terminalsforprovidingpower.UsetheNC,NCandCOMterminalsforinterfacingtotherelaycontact.



MN890660A  5of16

SAFETYPRECAUTIONS StepThree

AboutThisManual:PLEASEREADTHEENTIREMANUALPRIORTOINSTALLINGORUSINGTHISPRODUCT.

ThismanualincludesinformationontheLiquidFlowControllerfromDwyerInstruments:TSPSeries.The

unitsareidenticalexceptforthematerialofconstructionandsizeofthesensor.

User’s Responsibility for Safety:  Dwyer Instruments manufactures a wide range of liquid sensors,

controllers, and mounting systems.  It is the user's responsibility to select components that are

appropriatefortheapplication,installthem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: Use a proper sealant with all installations. Never over‐tightenthe

components.Alwayscheckforleakspriortosystemstart‐up.

MaterialCompatibility:

o Polypropylene(PP,apolyolefin):Sensor,JunctionBox.

o Ryton®:Sensor(TSP1__only).

o PolyvinylideneFluoride(PVDF):Sensor(TSP2__only).

o Make sure that the application liquids are compatible with the materials that will be wetted.  To

determinethechemicalcompatibilitybetweenthecomponentsanditsapplicationliquids,referto a

chemicalcompatibilityguide.

TemperatureandPressure:TSPseriesisdesignedforuseinapplicationtemperaturesupto50°C(140°F).

Theassemblyisalsodesignedforpressurizedapplicationsupto150psi(10bar).

ElectricalShock Hazard:  Itis possibleto contactcomponents onthe controllerthat carry high voltage,

causingseriousinjuryordeath.Allpower to the controller and the relay circuit(s)itcontrolsshouldbe

turnedOFFpriortoworkingonthecontroller.Ifitisnecessary to make adjustments during powered

operation,useextremecautionanduseonlyinsulatedtools.Makingadjustmentstopoweredcontrollers

isnotrecommended.Wiringshouldbeperformedbyqualifiedpersonnelinaccordancewithallapplicable

national,stateandlocalelectricalcodes.

FlammableorExplosive Applications: TheLiquid Flow Controller,TSP series, shouldnot be usedwithin

classifiedhazardousenvironments.

InstallInaDryLocation:Thecontrollerhousingisliquid‐resistantandmadeofPolypropylene(PP).When

installedproperly,thecontrollerisnotdesignedtobeimmersed.Itshouldbemountedinsuchawaythat

itdoesnotnormallycomeintocontactwithfluid.Refertoan industry reference to ensure that

compoundsthatmaysplashontothecontrollerhousingwillnotdamageit.Suchdamageisnotcovered

bythewarranty.



6of16  MN890660A

SAFETYPRECAUTIONS(cont.) StepThree

MakeaFail‐SafeSystem: Design a fail‐safe system that accommodates the possibility ofrelayorpower

failure. If poweris cutoff tothecontroller, it willde‐energizetherelay. Make surethatthede‐energized

stateoftherelayisthesafestateinyourprocess.Forexample,ifcontrollerpowerislost,achemicalfeed

pumpwillturnoffifitisconnectedtotheNormallyOpensideoftherelay.

While the internal relay is reliable,overthecourseoftimerelay failure is possible in two modes: under a

heavyloadthecontactsmaybe“welded”orstuckintotheenergizedposition,orcorrosionmaybuildupona

contact so that it will not complete the circuit when it should.  In critical applications, redundant backup

systems and alarms must be used in addition to the primary system.  Such backup systems should use

differentsensortechnologieswherepossible.

While this manual offers some examples and suggestions to help explain the operation of products from

Dwyer Instruments, such examples are for information only and arenotintendedasacompleteguideto

installinganyspecificsystem.

RelayContactRating:Therelayisratedfora16ampresistiveload.Manyloads(suchasamotorduringstart‐

upor incandescent lights)arereactive and mayhavean inrushcurrentcharacteristicthatmaybe10to20

times their steady‐state load rating.  The use of a contact protection circuit may be necessary for your

installationifthe16ampratingdoesnotprovideanamplemarginforsuchinrushcurrents.

SafetyCover:  Basedupon thepart number selected,a safety coverhas been placedwithinthe enclosure.

Alwaysreplacethesafetycoverafteranyservice.

CEVersion FlashAlarmVersion(non‐CE)











MN890660A  7of16

GETTINGSTARTED StepFour

Therelayinsidethecontrollerisasinglepole,doublethrowtype;thecontrolleddevicecanbeconnectedto

eitherthenormallyopenornormallyclosedsideoftherelay.Atimedelayfrom0.15to60secondscanbeset

beforetherelayrespondstothesensorinput.

GuidetoControls:Belowisalistingandthelocationofthedifferentcomponentsforthecontroller:

CEVersion FlashAlarmVersion(non‐CE)



1. Powerindicator:ThisgreenLEDlightswhenACpowerisON.

2. Relay indicator: This red LED willlight whenever the controller energizestherelay,inresponsetothe

properconditionatthesensorinputandafterthetimedelay.

3. ACPowerterminals:Connectionof120VACpowertothecontroller.Thesettingmaybechangedto240

VACifdesired.Thisrequireschanginginternaljumpers;thisiscoveredintheInstallation sectionofthe

manual.Polarity(neutralandhot)doesnotmatter.

4. Relay terminals (NC, C, NO):  Connect the device you wish to control (pump, alarm etc.) to these

terminals:supplytotheCOMterminal,andthedevicetotheNOorNCterminalasrequired.Theswitched

deviceshouldbeanoninductiveloadofnotmorethan16amps;forreactiveloadsthecurrentmustbe

deratedorprotectioncircuitsused.WhentheredLEDisONandtherelayisintheenergizedstate,theNO

terminalwillbeclosedandtheNCterminalwillbeopen.

5. Invert switch:ThisDIPswitchreversesthelogicoftherelaycontrolinresponse to the sensor(s):

conditionsthatusedtoenergizetherelaywillmakeitturnoffandviceversa.

6. TimeDelay:Aftertheinput(s)change(s)state,thiscontrolsetsadelayfrom0.15to60secondsbeforethe

relaywillrespond.

7. Input1Aindicator:TheseamberLEDwilllightimmediatelywhenevertheappropriatesensorattachedto

the terminals detects no‐flow, and will turn off when it detects flow.  This polarity can be reversed by

changeoftheswitchespolarity.

8. Inputterminals:Connectthewiringfromthesensorstotheseterminals:Notethe polarity:(+)isa24

VDC,100mApowersupply(tobeconnectedtotheredwireofaDwyerInstrumentssensor),and(‐)isthe

returnpathfromthesensor(tobeconnectedtotheblackwireofaDwyerInstrumentssensor).(S)Isthe

relay signal input to be connected to the white wire?  The remaining green wire will return to the (‐)

terminal.Ifpolarityisreversed,thesensorswillnotwork.

8of16  MN890660A

ELECTRICAL StepFive

Followthesestepsfortheelectricalportionofthismanual:

1. Confirmflowswitchisattachedtotheinputterminals.

2. Provide120/240VACpowertothesensor.

3. Connectswitcheddevicetotherelayterminals.

4. Attachflashalarm(ifincluded)totherelayterminals.

1.Confirmflowswitchisattached(Connectingswitchestoinputterminals):

Thesensorprovidedisprewired.Theflowswitch

will be wired with the White wire to the (S)

terminal (Switch Chan 1) and the Green wire to

the (‐) terminal(GND).  Typically,theRed wireis

wiredtothe(+)terminal(24VDC)andtheBlack

wiretothe(‐)terminal.ThisisaNormallyClosed

(NC)state.ReversingtheRedandBlackwireswill

switchthepolarityfrom

Normally Closed to

NormallyOpen(NO).

NormallyClosed‐Amber

LEDisONforano‐flow

stateandOFFforaflow

state.



NormallyOpen‐Amber

LEDisONforaflowstate

andOFFforano‐flow

state.



2.Provide120/240VACpower(VACPowerInputWiring):

Observethelabelingonthecontrolleronwhetherit

isconfiguredas120or240VAC.Note:Polaritydoes

notmatterwiththeACinputterminal.

 

Changingfrom120to240VAC:

1. Removethetwoscrewsfromthetopofthe

printed circuit board (PCB) and gently slide the

PCBfromthehousing.Usecautionwhen

removingthePCB.

2. LocatedjumpersJWA,JWBandJWConthePCB.

3. Tochangeto240VAC,removejumpersfromJWB

and JWC and place a single jumper across JWA.

To change to 120 VAC, remove jumper JWA and

placejumpersacrossJWBandJWC.

4. Gently return PCB into housing and replace the

twoscrews.

StandardVersion(Non‐CE)



 120VACConfiguration 240VACConfiguration

CEVersion



 120VACConfiguration 240VACConfiguration



MN890660A  9of16

ELECTRICAL StepFive

3.Connectswitcheddevicetotherelay(RelayInputWiring):

Therelayisadrycontactsinglepole,doublethrowtyperated

at250VAC,16A,½Hp.ThetwoterminalsNOandNC(normally

openandnormallyclosed)willbeusedindifferentapplications

withC(common)usedregardlessofchoicebetweenNOorNC.

Note: the"normal"stateiswhentherelaycoilisde‐energized

(theRedrelayLEDwillbeOFF).Regardlessoftheinvertstatus

(ONorOFF),thenormalstatewillalwaysbewhentheRedLED

isOFF.



4.AttachIntegralFlashAlarm:

WiththeintegralflashalarmwiredNC;itcanbeused

asahighorlowlevelalarm,dependingonthesetting

for the invert switch.  The flash alarm can also be

wiredNO.Note:theintegralflashalarmsharesthe

relaywithinthesensor.Theflashingalarmcanbeset

to either indicate when the switched device (pump,

valveoralarm)isactiveornotactive.



 

10of16  MN890660A

INSTALLATION StepSix

TheTSPseriesflowswitchcontrollermustalwaysbeincontact

with the liquid being measured.TheTSPseries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front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.

Warning

Theflowswitchtipshaveathinplasticwallwhichmaybedamagedifdroppedorinstalledimproperly.

TheTSPseriesisdesignedforuseinliquid.Forbestresults,avoidinstallingthesensorwherebubblesare

presentorwherethetipsoftheswitchmaybeoutoftheliquid.

Thetwotemperatureprobes(tips)mustalwaysbeperpendiculartotheflow(seetheflowatthesametime).





MN890660A  11of16

FLOWSWITCHCALIBRATION StepSeven

SetPoints:Ifthepresetfactorycalibrationisnotadequateforyourapplication,followthecalibrationsteps

listedbelow.Note:theswitch'sinternalLEDwillbeonwhentheswitchdetectsno‐flowandwilloffwhenthe

switchdetectsflow.

1. Install thefitting and flow switch asdescribed in the Installation section of this manual.  Turn theflow

switchandcontrollerpoweronandadjusttheflowratetotheapplicationsetting.Ifthemediumtobe

sensedislikelytobesubjecttohightemperaturevariations,theflowswitchshouldbesetatthehighest

normaltemperaturelikelytobeencountered.

2. Locatethepotentiometerknobatthetopoftheflowswitch.TheredLEDis

visible through the potentiometer.  (If the LED is on, slowly adjust the

potentiometercounterclockwise,withasmallflatheadscrewdriveruntiltheLED

turnsoff.)Theadjustmentisasingleturn270°potentiometer.Theinitial

responsetimeoftheflowswitchafteradjustmentis1to10seconds.Adjustthe

potentiometer in slow increments and wait for the response.  IftheLEDisoff,

slowlyadjustthepotentiometerclockwiseuntilthelightturnson.Thenturnthe

potentiometer counterclockwise to bring the LED off at a reliable setting.

Remember, adjust the potentiometer in slow increments and wait for the

response.

3. Verifythatthenewcalibrationiscorrectbyloweringthesystemflowratebelowthe

set point and check to see that the red LED turns on.  Then increase the flow rate

abovethesetpointandverifythattheredLEDturnsoffaccordingly.

LiquidSwitch



AccessingtheAdjustmentPotentiometer:Removethetwoscrewsfromthetopoftheprintedcircuitboard

(PCB).ThengentlyslidethePCBfromthehousing.UsecautionwhenremovingthePCB.Youwillnowbeable

toseethepotentiometerthroughthehousing.Makeanynecessaryadjustment.Note:Electricalwiringofany

liquid level control system should be performed in accordance with all applicable national, state, and local

codes.Whencompleted,gentlyreturnPCBintohousingandreplacethetwoscrews.





12of16  MN890660A

APPLICATIONEXAMPLES StepEight

LowFlowAlarm:Thegoalistoindicatewhentheflowratefallsbelowacertainpoint.Ifitdoes,analarmis

supposedtosound,alertingtheoperatorofalowflowcondition.

Flow



NoFlow



Ifpowerisaccidentallycuttothecontroller,thesensor'sabilitytonotifytheoperatorofalowflowcondition

couldbelost.Thesystemmustalerttheoperatornotonlytolowflow,buttocontrollerpowerloss.

Todothis,connectthehotleadofthealarmtotheNCsideoftherelayterminalofthe

controller.Ifpowerislost,therelaywillbede‐energized,andthealarmwillsound(if

thereisstillpowertothealarmcircuititself).Thealarmcircuit should have a

noninterruptiblepower supply orsomeotherindicator orbackupalarmtowarnofa

powerfailureinthealarmcircuit.

Inthisapplication,thenormalstatusiswhenthesensorisin the flow condition, and

therelaywillbeenergizedholdingthealarmcircuitopen.Pleasenotethattheflow

switch can be wired eithernormally closedor normallyopen (Step???).WhentheswitchiswiredNC,the

input LED will be off and the relay LED will be on. So for thisapplication,InvertshouldbesettotheOn

position.WhentheswitchiswiredNO,theinputLEDandtherelayLEDwillbeonsimultaneously.Soforthis

application,InvertshouldbesettotheOffposition.





MN890660A  13of16

APPENDIX StepNine

ControllerLogic:Pleaseusethefollowingguidetounderstandtheoperationofthecontrollers.

1. PowerLED:MakesuretheGreenpowerLEDisONwhenpowerissuppliedtothecontroller.

2. InputLED:ForNCswitchwiring,theinputLEDonthecontrollerwillbeAmberwhentheswitchreadsno‐

flowandOFFwhentheswitchreadsflow.

3. InvertOperation:WhentheinputLEDturnOffandOn,therelayLEDwillalsoswitch.WithinvertOff,the

relayLEDwillbeOnwhentheinputLEDisOnandOffwhentheinputLEDisOff.WithinvertOn,therelay

LEDwillbeOffwhentheinputLEDisOnandOnwhentheinputLEDisOff

.

4. RelayOperation:TherelaymaybewiredeitherNOorNC.ThenormalstateoftherelayiswhenitsLEDis

Off.WiththeLEDOn,therelayisintheenergizedmodeandallterminalconnectionsarereversed.

Troubleshooting:

PROBLEM SOLUTION

Controllerispowered,butnothing

happens.

FirstcheckthePowerLEDtomakesureitisGreen.Ifnot,check

the wiring, power and make sure the terminal is seated

correctlyoverthe6‐pins.

A Flow or No‐Flow condition is

metbuttherelaydidnotswitch.

Check the relay by switching the invert switch.  Confirm that

relayclickonandoffaswellastherelayLED.

The Flow or No‐Flow is not

switchingatthecorrectflowrate.

The flow switch may need to be adjusted.  Review the Flow

SwitchCalibrationsectiononthepreviouspageforinstructions

onsettingtheactualflowswitch.Note:accesstotheflow

switch adjustment is difficult and requires the removal of the

PCBassembly.Usecautionwhenperformingthisstep.

Trying to start the flow but the

controller keeps turning the flow

off.

Torestartaflowcondition,thesensorneedstosenseanactual

flowconditionbeforechangingtherelayinthecontroller.A

flow switch over‐ride may need to be added across the relay

contactsthatallowsforatrueflowtooccurbeforeswitching

backtothecontroller.Theuseofamomentswitchis

recommendedfortheover‐rideswitch.

RelayLEDdoesnotmatchmyflow

condition.

TherelayLEDcanbeswitchedbyeitherthereversingthewiring

ofthesensortothecontrollerorbyflippingtheinvertswitch.

This means that the relay LED can either be set to turn on

during a flow condition or to turn off during a no‐flow

condition.  This is all dependent on the wiring and the invert

position.

Relay LED does not match the

sensor’sLEDindicator.

Thesensor’sLEDwillalwaysbeONduringaNo‐Flowstateand

OFFduringaFlowstate,regardlessoftheswitcheswiring.As

per above the input LED can be inverted to any condition. In

some applications, they will match and in others they will be

opposite.  This is all dependent on the application

parameter/setup.





14of16  MN890660A

MAINTENANCE StepTen

General:TheTSPseriesrequiresnoperiodicmaintenanceexcepttocleanoffanydepositsorscalingfromthe

sensortipasnecessary.Itistheresponsibilityoftheusertodeterminetheappropriatemaintenanceschedule,

basedonthespecificcharacteristicsoftheapplicationliquids.

TheTSPSeriesisnotfieldserviceableandshouldbereturnedisrepairisneeded(fieldrepairshouldnotbe

attemptedandmayvoidwarranty).

CleaningProcedure:

1. Power: Makesurethatallpowertothesensor,controllerand/orpower supply is completely

disconnected.

2. SensorRemoval:Makesurethattheflowisoffandthepressureisdownpriortoremovingtheflow

switchcontroller.Carefully,removethesensorfromtheinstallation.Replacethesensorwitha3/4”

NPTplugtoinsurethatliquiddoesnotleakoutduringthisprocedure.Donotre‐installtheTSPseries

ifthethreadsaredamaged.

3. CleaningtheSensor:Useasoftbristlebrushandmilddetergent,carefullywashtheTSPseries.Donot

useharshabrasivessuchassteelwoolorsandpaper,whichmightdamagethesurfacesensor.Donot

useincompatiblesolventswhichmaydamagethesensor'sPP/Ryton®orPVDFplasticbody.

4. SensorInstallation:Followtheappropriatestepsofinstallationasoutlinedintheinstallationsectionof

thismanual.





MN890660A  15of16

MAINTENANCE StepTen

TesttheFlowSwitch:Usetoverifyifsensorindicateseitherano‐floworflowcondition.Thistestusesall

four‐wires(Red,Black,WhiteandGreen).  With RedtoPositiveandBlackto Negative, the Contacts (White

andGreen)willbeOpeninaFlowConditionandClosedin

aNo‐FlowCondition.Also,theRedLEDintheswitchwill

beOFFforaFlowConditionandONforaNo‐Flow

Condition.

Tosimulateano‐flow/flowcondition,placethesensorin

acupofwater.Withthesensorsittingstill,theRedLED

will turn on indicating a no‐flow state.  When you swirl the sensor within the cup, the LED will turn OFF

indicatingaflowcondition.Theinternalrelay(acrossWhiteandGreen)willopenandcloseaccordingly.

LEDIndication:UsetheLEDfortheswitchinputtoidentifythestateoftheflowswitch(floworno‐flow).The

LEDislocatednexttotheinputterminal.WhentheswitchiswiredNC,anAmberLEDindicatesno‐flowand

anOffLEDindicatesflow.Reversingthepolarity(NormallyOpen),anAmberLEDindicatesflowandanOffLED

indicatesno‐flow.

NormallyClosed(NC)

AmberLEDONforNo‐Flow

NormallyClosed(NC)

LEDOFFforFlow

NormallyOpen(NO)

AmberLEDONforFlow

NormallyOpen(NO)

LEDOFFforNo‐Flow



FlowSwitchLEDON

forNo‐Flow



FlowSwitchLEDOFF

forFlow



FlowSwitchLEDOFF

forFlow



FlowSwitchLEDON

forNo‐Flow

Note:TheLEDinsidetheflowswitchwillalways

beONforNo‐FlowandOFFforFlow,regardlessofthepolarity

oftheflowswitch.InNCwiring,theswitch’sLEDwillmatchthecontroller’sLED.InNOwiring,theswitch’s

LEDwillbeoppositeofthecontroller’sLED.





16of16  MN890660A

WARRANTY/RETURN StepEleven

WARRANTY/RETURN

Referto“TermsandConditionsofSale”inourcatalogoronourwebsite.Contactcustomerservicetoreceive

aReturnGoodsAuthorizationnumberbeforeshippingyourproductbackforrepair.Besuretoincludeabrief

descriptionoftheproblemplusanyrelevantapplicationnotes.

DwyerInstruments,Inc.

Attn:RepairDepartment

102Highway212

MichiganCity,IN46360



Dwyer Series TSP User manual

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