Omega LVV-110 and LVV-120 Series Owner's manual

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SPECIFICATION StepOne

AboutVerticalBuoyancyLevelSwitchSensors:TheVerticalBuoyancyLevelSwitchconsistsofafloat,magnet

reedswitchandbafflebodywhichdampensturbulenceandeliminatesthenegativeeffectsofswitchchatter.

When the probe is dry, the float rests on the bottom of the baffle body such that the  magnet does not

influence the reed switch. As the probe becomes immersed in liquid, the float becomes buoyant and the

magnetelevatescausingthereedswitchtochangetochange.

TableofContents

Specifications:.........................................................................................................................................................4

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

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

Installation:............................................................................................................................................................6

 TopWallInstallation:.................................................................................................................................6

 BayonetConnection:..................................................................................................................................6

 Orientation:................................................................................................................................................6

 ConnectiontoaSwitchCarKit(LVM‐20series)::......................................................................................7

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

LVM‐10seriesandLVM‐50seriesAssemblies:.........................................................................................8

Wiring:....................................................................................................................................................................9

WiringtoanOmegaEngineeringController:.............................................................................................9

Maintenance:.......................................................................................................................................................10

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4

SPECIFICATION/DIMENSION StepTwo

Accuracy: ±2mminwater

Repeatability: ±1mminwater

Orientation: ±20˚fromvertical

SpecificGravity: 0.8minimum

ContactType: (1)SPDTreed

ContactRating: 15VA,0.25Amax.

ContactVoltage: 120VAC,120VDC@15VA

ContactOutput: SelectableNO/NC

TemperatureRange: F:‐40˚to176˚

 C:‐40˚to80˚

PressureRange: 25psi(2bar)@25˚C.,derated

@ 1.667 psi (.113 bar) per ˚C.

above25˚C.

SensorRating: NEMA6/IP68

SensorMaterial: Polypropylene(PP)

 PolyvinylideneFluoride(PVDF)

CableType: 3‐cond.r,22‐gauge,shielded

CableLength: 10’(3m)

CableMaterial: PPorPFAjacket

MountingThreads: 3/4”NPT

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SwitchRating:

Reed

Switch

Rating

Maximum

Resistive

Load

VA Volts Amps

AC

Amps

DC

15 0‐50 0.3 0.21

15 120 0.13 0.09

15 240 0.06 0.04

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Components:

Part

Number

Body

Material

Cable

Material

Cable

Length

LVV‐110 PP PP 10’

LVV‐110‐25 PP PP 25’

LVV‐110‐50 PP PP 50’

LVV‐111 PVDF PFA 10’

LVV‐110‐25 PVDF PFA 25’

LVV‐110‐50 PVDF PFA 50’

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Dimensions:

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SEFETYPRECAUTION StepThree

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

manual includes information on the vertical buoyancy, Model LVV‐110 & LVV‐111. Please refer to the part

numberlocatedonthesensorlabeltoverifytheexactmodelwhichyouhavepurchased.

User’sResponsibilityforSafety:OMEGAENGINEERINGmanufacturesawiderangeofliquidlevelswitches

andtechnologies.Whileeachofthetheseswitchesaredesignedtooperateinawidevarietyofapplications,

itistheuser’sresponsibilitytoselecta switch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electricallyoperateddevice,onlyproperlytrainedstaff

should install and/or repair this product. Use a proper sealant with all installations. 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 LVV‐110serieslevel switchisavailable intwowetted material versions.The

switch and the cable are made of Polypropylene (PP) for the LVV‐110 models. The switch is made of

PolyvinylideneFluoride(PVDF)andcableismadeofPerfluoroalkoxy(PFA)fortheLVV‐111models.Makesure

thatthe switchiscompatible  withthe applicationliquids.To determinethechemicalcompatibility between

thesensoranditsapplicationliquids,refertotheCompassCorrosionGuide.

TemperatureandPressure:TheLVV‐110Seriesswitchisdesignedforuseinapplicationtemperaturesupto

80˚C,andforuseatpressuresupto25psi(2bar)@25˚C.,derated@1.667psi(.113bar)per˚C.above25˚C.

WiringandElectrical:ThesupplyvoltageusedfortheLVV‐110seriesshouldneverexceed120voltsAC@

15 VA.Electricalwiringof the switch shouldbeperformed in accordance withallapplicable national, state,

andlocalcodes.

Flammable, Explosive and Hazardous Applications: The LVV‐110 Series switch should not be used within

flammable or explosive applications unless properly connected to an approved control device. In hazardous

applications, use redundant measurement and control points, each having a different sensing technology.

RefertotheNationalElectricalCode(NEC)forallapplicableinstallationrequirementsinhazardouslocations.

Warning 

AvoidinstallingtheLVV‐110seriesintanksinmagnetizedmetaltanks.Doingsowillactivatetheinternalreed

switch.

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INSTALLATION StepFour

TopWallInstallation:OMEGAENGINEERING’sLVV‐110seriesmaybeinstalledthroughthetopwall ofatank .

For Level Track Mounting System (LVM‐10 series) installations, remove the sensors thread and use the

bayonetadaptertointerfacetotheLVM‐20seriesSwitchCar.FortheSingle‐SwitchFittingAssembly(LVM‐50

series)installationsusethe3/4”threadastheinterface.

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BayonetConnection:The¾”threadcanberemoved

toaccessthebayonetconnection.Simplepressdown

onthethreadsandtwisttorelease.

Orientation: Mounting orientation bust be kept

vertical forproperorientation. The vertical buoyancy

and float switches are orientated in vertical position

±20˚.

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 7

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INSTALLATION(continued) StepFour

ConnectiontoaSwitchCarKit(LM30series):InordertoattachtheLVV‐110SeriestoaLevelTrackMounting

System (LVM‐10 series) fitting, a Switch Car Kit (LVM‐20 series) is required.The LVV‐110 Series can be

attachedintwoways,withoutthebayonetadapterandwiththebayonetadapter.

WithoutBayonetAdapter WithBayonetAdapter

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TheuseofthebayonetadapterwillincreasetheoveralllengthoftheLVV‐110/LVM‐20seriesassembly.This

willresultinaloweractivationpointwithinthetankduetotheaddedlength.Itisrecommendedtoremove

thebayonetadapterwheninterfacingwithLevelTrackMountingSystem.

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First, remove the bayonet

adapter by pressing down

twistingtheadapter.

Next,threadthesensorwirethroughtheO‐ringandthe

sensorcarandoutthroughtheholebetweenthesensor

car shoe and the locking bolt.Set the O‐ring into the

LVV‐110.Push the sensor into the bayonet side  of

sensorcar.Screwthebayonetadapterontothesensor

untilthesensorseatsagainstthepitinsidetheadapter.

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ELECTRICAL StepSix

Voltage:TheinputvoltagetotheLVV‐110seriesshouldneverexceedthemaximumvoltagerating.OMEGA

ENGINEERING controllers have a built‐in 13.5 VDC power supply which provides power to all of OMEGA

ENGINEERING’s level switches. Alternate controllers and power supplies may also be used with the LVV‐110

series.

Cable Length:Determine the length of cable required between the LVV‐110 Series sensor 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feet,usingawellinsulated,shieldedwire.

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

striper,removethelast1/4"ofthecoloredinsulation

fromthesignalwires.

LevelTrackMountingSystemandSingle‐SwitchFittingAssembly:TheLVV‐110seriescanbepackagedwith

OmegaEngineeringLevelTrackMountingSystemandSingle‐SwitchFittingAssembly.

LevelTrackMounting

SystemwithJunction

Boxand(2)Switches

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LevelTrackMounting

SystemwithRelay

Controllerand(2)

Switches

Single‐SwitchFitting

AssemblywithJunction

Boxand(1)Switch

Single‐SwitchFitting

AssemblywithRelay

Controllerand(1)

Switch

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 9

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WIRING StepSeven

WiringtoaOMEGAENGINEERINGController

LVCN‐120SeriesController(LVCN‐120Shown):

LVCN‐100SeriesController(LVCN‐20shown):



NOTE:Whenusingalatchingrelay,thepolarityofbothswitchesmustbethesame.Eitherbothswitchesare

wiredNormallyClosed(Red&Black–SeeRelay#2withLVCN‐120)orbothNormallyOpen(White&Black–

SeeRelay#1withLVCN‐20).

VerticalBuoyancyLevelSwitch:

TheLVV‐110seriescanbewirednormallyopenornormallyclosedforyourapplicationrequires.

Normally Open:Use the Black and White wire for

operation the LVV‐110 series in a normally open

state. Normally open is defined as the switch being

openwhenthefloatisdryandclosedwhenthefloat

becomes submersed. This operation is typical for

indicatingahighlevel.

Normally Closed:Use the Black and Red wires for

operatingtheV‐110seriesinanor m allyclosedstate.

Normallyclosedisdefinedastheswitchbeingclosed

when the float is dry and open when the float

becomes submersed. This operation is typical for

indicatingalowlevel.



10

MAINTENANCE StepEight

General: Whileafilter shroud protects thefloatfromparticulate contamination, the switchmayneed to be

cleanedperiodicallytopreventjammingofsticking.Theverticalbuoyancyandverticalfloathasnoscheduled

maintenance requirement,exceptto clean offanydeposits  or scaling from the switchasnecessary. It isthe

responsibility of the  user to determine the appropriate maintenance schedule, based on the specific

characteristicsoftheapplicationliquid.

Cleaningprocedure:

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

disconnected.

2. Switch removal: If necessary, make sure that the tank is drained well below the switch prior to

removal. Carefully, remove the sensor from the installation. Remove the outer screen by pushing on

thescreenandturningitslightlytodisconnectitfromthebuoyancynetconnectorsothatthefloatis

exposed.

3. Cleaning the switch: using a soft bristle brush and mild detergent, carefully wash the switch. Do not

use harshabrasivessuchassteel wool orsandpaper,which might damage thesurface of thesensor.

Do not use incompatible solvents which may damage the sensor’s PP or PVDF plastic body. Take

particularcaretoremoveanyscalingfromthefloatbodyandmakesurethatitmovesfreely.

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

thismanual.

Testingtheinstallation:

1. Power:Turnonpowertothecontrollerand/orpowersupply.

2. Immersing the switch: Immerse the sensing tip in its application liquid, by filling the tank up to the

switchduringpreliminarytestingistoholdacupfilledapplicationliquiduptotheswitch’stip.

3. Test: With the switch being fluctuated between wet and dry states, the switch indicator light in the

controllershouldturnonandoff.Ifthecontrollerdoesn’thaveaninputindicator,

a. Useavoltmeterwithapowersupplyinseriestomeasureanopenorclosedcircuit.

b. Useanohmmeterinseriestomeasureanopenorclosedcircuit.

4. Point of actuation: Observe the point at which the rising or falling

 fluid level causes the switch to

changestate,andadjusttheinstallationoftheswitchifnecessary.



Example:TestingtheLVV‐110SerieswithaMultimetersettoreadVolts.WhenwiredNO(BlackandWhite),

themeterwillread0voltswhendryandfullvoltagewhenwet.

 11



12



Omega LVV-110 and LVV-120 Series Owner's manual

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