Omega Products FSW-338 User Manual

K

K-38

The LVCN-300 Series is designed
from an operator’s point of view,
making any process and alarm points
visible on the multi-colored display
graph. They get everything they need
at a glance! The LVCN-300 Series
provides reliability with very flexible
design options and a friendly face to
tell you exactly what is going on
inside your tank no matter where it
is located. Everyone can easily see
it from a distance or while walking
the plant floor. It’s this simple to
understand—if the green vertical
bar (level) is between the orange
and yellow line everything’s just
fine. If it’s above or below the red
marks, something is wrong. That is
all there is to it. The LVCN-300
Series accepts all types of 4 to 20
mA sensors, such as pressure,
ultrasonic, float type liquid level
transmitters and capacitive
transmitters. The sensor input is
isolated and loop powered up to 24
Vdc, allowing data gathering
devices to easily interface. Two
models are available, the LVCN-301
or LVCN-302. The LVCN-301 is for
Make Up applications and the LVCN­302 is for sump applications. A
typical Make Up application is when
the liquid in a tank is “lost” because
it is being used in a manufacturing
process or lost by evaporation and
has to periodically be refilled or
“made up”. To accomplish a Make
Up operation the LVCN-301
controller uses a differential relay
that is activated by a FALLING level
in the tank. The same relay is going
to turn the pump or valve ON and
OFF. First you need to program the
Make Up ON level where you want
to begin refilling the tank with liquid.

When the level FALLS or
DECREASES to this point, the
controller will CLOSE or activate the
relay and turn ON a pump or valve
and begin refilling the tank. The
LVCN-301 controller has internally
“latched” the relay closed and will
continue holding it closed until the
Make Up OFF level that was
programmed is reached and the
tank stops filling. A typical Sump
application is when the liquid in a
tank is being collected and has to
periodically be transferred or pumped
out to prevent an overflow. A basement
with a sump pump is doing the same
type of operation. To accomplish
this Sump Operation the LVCN-302
controller uses a differential relay
that is activated by a RISING level
in the tank. The same relay is going
to turn the pump or valve ON and
OFF. First you need to program the
SUMP ON level where you want to
begin draining the liquid in the tank.
When the level RISES or INCREASES
to this level the controller will
CLOSE or activate the relay and
turn on a pump or valve and begin
draining the tank. The LVCN-302
controller has internally “latched” the
relay closed and will continue
holding it closed until the Sump OFF
level you programmed is reached
and the tank stops draining.

SPECIFICATIONS

Sensor Input: Isolated input accepts any

type of 4 to 20 mA process signal. Loop
power available up to 24 Vdc @ 500µA for
2 wire device
Input Power: 120 Vac/500mA; 24 Vdc or
24 Vac unregulated (optional) 750 mA

Security Levels:

3 levels of access protect data changes
with DIP switch on back
Control Circuits: Four Form C relays,

10.0 amp 125 Vac (noninductive)

Switching Mode: Selectable,
NO or NC states

Output & Input Connections:

Terminal Connections are quick
disconnect Phoenix type
Programmed Memory: EEPROM-Loss
of power will not affect existing
programmed data
Mounting Format: Flush mounted
anodized steel enclosure with eight (8)
10/32 studs and sealing gasket;
NEMA 4 (IP66) graphic front panel; steel
back pan housing. Optional fiberglass
enclosure is also rated NEMA 4 (IP66).

Overall Dimensions:

425 L x 250 W x 57 mm D
(16.75 x 10.25 x 2.25")
Weight: 4.5 kg (10 lb)

To Order

(Specify Model Number)

Model No. Price Description

LVCN-301 $2190 Make-up model
LVCN-301-NEMA4 3034 LVCN-301 in NEMA 4 fiberglass enclosure 16 x 20 x 8"
LVCN-302 2190 Sump model
LVCN-302-NEMA4 3034 LVCN-302 in NEMA 4 fiberglass enclosure 16 x 20 x 8"
LVR31 610 Float transmitter, 0.3 m (1') length
PX439-005GI 579 Submersible pressure transmitter
FSW-338 84 Reference Book: Advanced Resevoir Engineering

Comes with complete operator’s manual. For 24 Vdc power, add “-24VDC” to model number.
For 24 Vac power, add “-24VAC” to model number. No additional charge.
Ordering Example: LVCN-301, make up model, PX439-005GI, submersible pressure sensor,
$2190 + 579 = $2769. LVCN-302-NEMA4, sump model with NEMA 4 (IP66) enclosure, $3034

LVCN-301

$

2190

PROCESS LEVEL CONTROLLER WITH
MULTICOLORED BAR GRAPH

⻬ NEMA 4 (IP66) and

Optional NEMA 4 (IP66)
Fiberglass Enclosure

⻬ Multi-Color Bar Graph

Process for Zooming
in on Critical Range

⻬ Large Numeric Display
⻬ 4 to 20 mA Process Input
⻬ Easy Front

Panel Programming

MOST POPULAR MODELS HIGHLIGHTED!

LVCN-301, $2190, shown
with PX439-005GI,
submersible
pressure transmitter
(sold separately),
$579, shown smaller than actual size.
For more information visit omega.com
and search PX439.

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