Omega LV-510 Owner's manual

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INTRODUCTION StepOne

Specifications:

Accuracy: ±5mminwater

Repeatability: ±2mminwater

Extremeorientation: ±20°fromvertical

SpecificGravity: 0.8minimum

Contacttype: (1)SPST(reed)

Contactrating: 50VA@0.5A

Contactoutput: SelectableNOorNC

Temperaturerange: F:‐40°to176°/C:‐40°to80°

Pressure: 10psi(0.7bar)

Sensorrating: NEMA6(IP68)

Sensormaterial: LV‐510:Polypropylene

 LV‐511:PolyvinylideneFluoride

Wirejacketmaterial: LV‐510:PVC

 LV‐511:TFE

Wiretype: 2‐conductor

Wirelength: 2’(61cm)

Mountingthreads: 1/8"NPT

Classification: Generalpurpose,CE

Installation:

1. Switchesshouldbeinstalledrigidlysothefloator

floats are free to move as the liquid level

changes.

2. Switches should be mounted in a tank area free

of severe turbulence or protected from such

turbulence by appropriate and adequate slosh

shields.

3. Vertical switch stems should be vertical for best

results, but satisfactory operation is possible in

most liquids with the stem at up to a 20° angle

fromvertical.

4. Care should be taken that switches are always

operatedwithinelectricalratings.

5. Orientation for switches can be changed from

normally open to normally closed dry or vice

versabyremovingthefloatandreversingitinthe

stem.

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Dimensions:

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Components:

Part

Number

Body

Material

Cable

Material

Thread

LV‐510 PP PVC 1/8”NPT

LV‐511 PVDF TFE 1/8”NPT

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SwitchRating:

ReedSwitchRating Max.ResistiveLoad

VA Volts Amps(AC) Amps(DC)

50

0‐50 0.5 0.5

120 0.4 0.4

240 0.2 0.2

Top Wall Installation:Omega Engineering LV‐510 series switch may be installed through the top wall of a

tank.Becausethethreadofthesensorisverysmall(1/8”),findingstandardfittingsmaybedifficult.Inlieuof

standardfittings,onesuggestionistousealargerpipe,suchas½”.Placeacaporplugontheendofthepipe

andtapa1/8”threadintotheend.Securetheotherendofthepipetothetopofthetankortoaclamp.For

pipeslongerthan2’,besuretocleanlyextendthecable(splice)sothattheconnectionisnotexposedtothe

liquid. 

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ELECTRICAL StepTwo

SignalOutputs (NormallyOpenvs.NormallyClosed):TheLV‐510seriesfloatswitchshipsfromthe factoryin

the Normally Open (NO) configuration.The normal state is when the float is resting on the bottom of the

stem.AnorientationmarkwillappearonthetopofthefloatwhenitisintheNOconfiguration.Toswitchthe

LV‐510seriesfromNOtoNCconfiguration,flowthestepsbelow.

1. RemovetheC‐clipfromthestem.

2. Removethefloatandrotateit180°.

3. Returnthefloattothestemwithorientationmarknowonthebottom.

4. ReplacetheC‐clip.

NormallyOpenOperation: NormallyClosedOperation:

Orientation mark on the top of the float.In the dry

state, the float rests on the bottom of the stem and

thecircuitisopen.

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Orientation mark on the bottom of the float.In the

dry state, the float rests on the bottom of the stem

andthecircuitisclosed.

As the switch becomes wet, the float becomes

buoyantandcircuitcloses.

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As the switch becomes wet, the float becomes

buoyantandcircuitopens.

ContactProtection(ReedSwitch):Whencurrentisinterrupted,theinductanceoftheloadgeneratesahigh

frequency voltage, which appears across the switch contacts.If the voltage is large enough, it can cause 

arcing.Arcingcancausethecontactstoweldtoeachotherresultinginunreliableswitchingperformance.Itis

essential to protect the cir

cuit, by suppressing the voltage to prevent arcing.This can be accomplished

throughtheuseofadiodeforDCcircuitsandaresistor‐capacitornetworkforACcircuits.

DCContactProtection:

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ACContactProtection:

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Omega LV-510 Owner's manual

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