Omega Products LVC-E13 User Manual

LOW-COST CONDUCTIVITY
LEVEL SWITCH SYSTEMS

All products shown
smaller than actual size.

LVC512,
$195.

LVC521,
$99.

LVC511,
$152.

LVC-E11 electrode, $5.

For Liquids Only

LVC551,
$275.

LVC Series

Starts at

$

99

⻬ No Moving Parts

for Long Life

⻬ Wide Chemical

Compatibility

⻬ Works for

Conductive Liquids

The LVC500 Series electronic level
controls should be used whenever a
liquid level needs to be maintained,
such as pumping down an industrial
sump, or indicated, such as a
holding tank high-level alarm. A
system consists of 3 components:
(1) cut-to-length threaded electrode
rods; (2) single or multi-electrode
holder; (3) remote electronic module(s).

The LVC500 Series operates on a
simple conductance principle
whereby a small electrical current is
passed through the conductive

liquid between 2 electrodes or an
electrode and a metallic tank wall.
For applications that require a
separate start and stop point, a
single control module, plus
2 electrodes and a tank reference,
is required. When several
applications or levels are
necessary within a
single tank, an electrode
is needed for each level
(plus tank reference),
plus a multi-electrode
holder and a control
module for each
differential or
single-level application.

Typically, potable water,
condensate, acids, and
water-based chemicals
(inorganic chemicals) have
sufficient conductivity.
Non-aqueous liquids, such
as oils and other hydrocarbons,
cannot be measured.

Note:

Always treat hazardous areas with respect! If the electrodes or float switch is located in a
hazardous area, an intrinsically safe control module must be used. Intrinsically safe controls
must be installed by experienced personnel familiar with intrinsic safety wiring, and
installation must be in accordance with the National Electrical Code (NEC). The control must
be mounted in a non-hazardous location with the wiring to the level probes or float switch
going into the hazardous atmosphere. Intrinsically safe wiring must be separated from
non-intrinsically safe wiring, and the length of your 14 or 16 gage copper wire must not
exceed the specifications listed in the current installation manual. Consult your local
electrical code inspector for further details.

K-X

LVC-N3-SS, SS threaded
multi-electrode assembly,
$375, shown smaller than
actual size.

K

Electronics Modules
Mounting Assemblies

All products shown
smaller than actual size.

Specifications

⻬ SPDT Relay Output
⻬ Fully Field Selectable
⻬ Transparent Case for

Viewing Relay Status

• Low-voltage probe circuit

• SPDT relay output

• Interface to pumps, valves, or
alarm systems

• Field-selectable latching/
non-latching operation

• Field-selectable high/low alarm,
pump-up/pump-down

LVC510 Series:

• See-through Lexan®case for
viewing relay status LED

• Plug-in module, socket included

• Screw terminal connections
for easy wiring

LVC512 Model:

• Field-settable sensitivity to match
a variety of liquids

• Required for distilled water
(1 MΩ max)

LVC521 Model:

• Open circuit board construction

• Low cost, OEM style

• Spade terminal connections

• Designed to mount on 1⁄16" backplate
with supplied plastic standoffs

• Relay status LED

LVC550 Series:

• Intrinsically safe

• Approved for Class I and II,
Divi sion 1, Groups A through G

• 8 A relay output

• LVC551: FM approved
LVC552: UL approved

• Can be used with any non-powered
switch closure

Electronics Operation Direct

Mode Single-Level Service:
Single-Level Service: For high or

low alarms or cutoffs. When the
liquid rises to the electrode on
terminal H, the control energizes,
changing the state of the load
contacts. The control remains
energized until the liquid level
recedes below electrode on

LVC511,
$152.

LVC521,
$99.

LVC512,
$195.

LVC-E11
electrode, $5.

LVC551,
$275.

terminal H. The control then
de-energizes, returning load
contacts to original state.

Differential Service: For fill or
drain applications. When the liquid
rises to the electrode on terminal H,
the control energizes, changing the
state of the load contacts. The
control remains energized until the
liquid level recedes below electrode
on terminal L. The control then
de-energizes, returning load
contacts to original state.

Inverse Mode: Control energizes
with power, changing the state
of the load contacts. All other
responses are the opposite of the
response given by direct-mode
operation. Inverse mode is normally
used for pump-up or high-level
alarm applications.

SPECIFICATIONS

Supply Voltage: 102 to 132 Vac

(110 to 132 Vac for LVC552), 50/60 Hz
standard; 240 and 24 Vac optional)

Ambient Temperature:

-40 to 65°C (-40 to +150°F )

Switch-Point Hysteresis:

1.6 mm (±

Relay Time Delay:

rising level

See chart below for additional information.

1

⁄16")

1

⁄2 second delay on

Mounting Assemblies

Single Electrode:

The LVC-S Series comprises single
electrode holders with exposed
connection. UL-approved rubber
boots are available for connection
protection.

Shipping Weight:

LVC-S unit, 170 g (6 oz)

Overall Length: 82.6 mm (3.25")

Multiple Electrodes:

The LVC-N and LVC-F mounting
assemblies feature a gasketed,
epoxy-coated, die-cast aluminum
junction box, and include the proper
number of electrode holders.

See chart below for additional information.

Electrodes

The LVC-E electrodes come standard
in 316 SS, but are available in a wide
range of materials. Electrodes thread
into couplings on LVC-S, LVC-N, and
LVC-F mounting assemblies.

Electrode Diameter: 6.35 mm (1⁄4");

1

⁄4" thread length

Electrode Weight:

0.25 g/mm (0.167 lb/ft)

Electronic Modules

LVC Power Dimensions: mm (in) Shipping Weight
Model Consumption HW L g (oz)

511 4.5 W 88.9 (3.5) 50.8 (2) 58.7 (2.31) 487 (20)
512 4.5 W 88.9 (3.5) 63.5 (2.5) 66.7 (2.62) 487 (20)
521 4.5 W 34.9 (1.37) 63.5 (2.5) 55.6 (2.19) 487 (20)
551 4.0 W 54 (2.12) 85.7 (3.37) 111.2 (4.18) 765 (27)
552 1.7 W 54 (2.12) 85.7 (3.37) 111.2 (4.18) 765 (27)

Multiple Electrode Assemblies

LVC Model Electrodes

NX-BR/FX-BR 1 57.2 (2.25) 57.2 (2.25) 57.2 (2.25)
NX-BR/FX-BR 2 to 4 82.6 (3.25) 82.6 (3.25) 60.4 (2.37)
NX-BR/FX-BR 5 to 7 101.6 (4.0) 101.6 (4.0) 63.5 (2.5)

No. of Housing Dimensions: mm (in) Housing

HW L

Conduit Size

1

⁄2 NPT

1

⁄2 NPT

3

⁄4 NPT

K-X