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
AC Supply
Socket of
LVC 511
L1
C
NC
NO
(pump-down)
Hot
GL
H
L2
To Load
(pump-up)
From
Load
Neutral
3
2
1
Electrodes
Fitting
Top
Electrode
Lengths
(Load)
Pump
3C
To Load
Select electrode length as
1
measured from the top of the
tank to the required
activation point. Determine
the number of electrodes
necessary for your application.
Select mounting style to match
2
tank. Select fitting that matches
the number of electrodes
selected. Select material to
match liquid.
Select the proper
3
electronic module.
Electrodes
To Order (Specify Model Number)
1
MOST POPULAR MODELS HIGHLIGHTED!
Model Model Length
Number Price Material Number Price Material mm (in)
LVC-E11 $5 303 SS LVC-E51 $6 316 SS 305 (12)
LVC-E12 10 303 SS LVC-E52 12 316 SS 610 (24)
LVC-E13 15 303 SS LVC-E53 18 316 SS 915 (36)
LVC-E14 20 303 SS LVC-E54 24 316 SS 1220 (48)
LVC-E15 25 303 SS LVC-E55 30 316 SS 1525 (60)
LVC-E16 30 303 SS LVC-E56 36 316 SS 1830 (72)*
* Beyond 1.8 m (72"), probes require PTFE sleeving at the tip to prevent swaying probes from
coming into contact with each other. For very long probes or in highly agitated tanks, spacers
may also be required. Consult OMEGA®Flow Department for further details.
Threaded Single Electrode Holders
Model Wetted Max Pressure
2
Number Price Description Materials at Max Temperature
LVC-S3 $35
3
⁄8 MNPT for 316 SS/PTFE 400 psig at 231°C (448°F)
1 LVC-E electrode
open terminal
Threaded Multi-Electrode Assemblies (Includes Junction Box)
Stainless Cast Wt.
2
Steel Price Brass Price Iron Price kg (lb) Description
LVC-N1-SS $285 LVC-N1-BR $115 LVC-N1-C $85 3.9 (1.8) 1 MNPT, for 1 LVC-E electrode
LVC-N2-SS 330 LVC-N2-BR 161 LVC-N2-C 131 5.7 (2.6) 2 MNPT, for 2 LVC-E electrodes
LVC-N3-SS 375 LVC-N3-BR 210 LVC-N3-C 179 7.2 (3.25) 2 MNPT, for 3 LVC-E electrodes
LVC-N4-SS 425 LVC-N4-BR 255 LVC-N4-C 225 8.4 (3.8) 21⁄2 MNPT, for 4 LVC-E electrodes
LVC-N5-SS 475 LVC-N5-BR 305 LVC-N5-C 275 11.4 (5.2) 3 MNPT, for 5 LVC-E electrodes
LVC-N6-SS 525 LVC-N6-BR 350 LVC-N6-C 320 11.4 (5.2) 3 MNPT, for 6 LVC-E electrodes
LVC-N7-SS 575 LVC-N7-BR 400 LVC-N7-C 370 11.6 (5.25) 3 MNPT, for 7 LVC-E electrodes
All threaded assemblies rated for 250 psig, 208°C (406°F).
LVR rubber boot
for electrode, $6.
Ordering Example
It is desired to have a pump-up
control system in a plastic tank
holding ordinary water. The
components ordered are:
1) 1 LVC-E11 electrode ($5)
2) 2 LVC-E12 electrodes
(@$10 each)
3) 1 LVC511 electronics
module ($152)
4) 1 LVC-N3-BR 2 MNPT brass,
3-electrode mounting
assembly ($210)
5) One 100' roll of TX4-100
4-conductor shielded copper cable
($35)
The LVC-E electrodes are all
threaded into the LVC-N3-BR. Low
level is at 24" below the top (between
the 2 LVC-E12 electrodes); high level
is at 12" below the top (between the
LVC-E12 and LVC-E11 electrodes).
The LVC511A can be wired for pumpup control, as well as for pump-down,
high-level, or low-level alarm. Three
of the 4 conductors of the TX4-100
cable are connected to the 3 probe
terminals inside the LVC-N3-BR
mounting assembly.
[5 + (10 x 2) + 152 + 210 + 35 + $422]
Total Price = $350
Flanged Multi-Electrode Assemblies (Includes Junction Box)
Stainless Flange Size and Dia. Weight
2
Steel Price Cast Iron Price Description mm (in) kg (lb)
LVC-F1-SS $460 LVC-F1-CI $240 1", for 1 LVC-E electrode 108 (4.25) 1.25 (2.75)
LVC-F2-SS 525 LVC-F2-CI 290 2", for 2 LVC-E electrodes 152 (6) 2.9 (6.5)
LVC-F3-SS 550 LVC-F3-CI 335 2", for 3 LVC-E electrodes 152 (6) 3.0 (6.7)
LVC-F4-SS 600 LVC-F4-CI 380 21⁄2", for 4 LVC-E electrodes 178 (7) 3.6 (7.9)
LVC-F5-SS 650 LVC-F5-CI 425 3", for 5 LVC-E electrodes 190 (7.5) 5 (11)
LVC-F6-SS 700 LVC-F6-CI 475 3", for 6 LVC-E electrodes 190 (7.5) 4.9 (10.9)
LVC-F7-SS 750 LVC-F7-CI 525 3", for 7 LVC-E electrodes 190 (7.5) 4.9 (10.9)
Standard flange is 125# cast iron rated for 125 psig, 178°C (353°F);
150# 316 SS flange rated for 225 psig.
Nominal Pipe, Flange
Standard Relay Electronics
Model Max Media
3
Number Price Description Resistance
LVC511 $152 10 A resistive at up to 120 Vac, 50,000
8-pin socket
LVC512 195 10 A resistive at up to 120 Vac, (Field adjustable
11-pin socket from 4700 to
1 million Ω)
LVC521 99 10 A resistive at up to 120 Vac, 50,000
open circuit board
Intrinsically Safe Relay Electronics
LVC551 $275 8 A resistive at up to 120 Vac, (Field adjustable
FM listed from 0 to 470,000 Ω)
LVC552 275 8 A resistive at up to 120 Vac, 100,000
UL listed
Comes complete with operator’s manual.
Direct action standard; for inverse action, add suffix “-INV” to model number; LVC551 and
LVC552, no extra cost.
Inverse normally used for pump-up or low-level applications.
For 240 Vac operation, add suffix “-240VAC” to model number; add $40 to price for the
LVC552 and LVC512. For 24 Vdc operation, add suffix “-24V” to model number and add
$40 to price.
K-X
K
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EPG05
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