Omega Products LV132 User Manual
DISCRIMINATING LIQUID SENSOR
Double-Wall
Pipe
LV132
LV132
Fiberglass,
Double-Wall
Tank
Containment
Sump
Your Controls
Receiver
Conductivity
Probe
Prism
LED
Light
from
LED
Electrical
Conductance
in Water
Light
Lost In
Liquid
Hydrocarbon
Conductivity
Probe - No Electrical
Conductance In
Hydrocarbon
Water
Present
Hydrocarbon
Present
Dry
Your Controls
Water
Present
Hydrocarbon
Present
Dry
Your Controls
Water
Present
Hydrocarbon
Present
Dry
Your Controls
LV1 32
Logic
Circuit
LV1 32
Logic
Circuit
LV1 32
Logic
Circuit
for Interstitial Applications
Detachable
integral pull
ring included
LV132, $175,
shown actual size.
Double-wall tanks, containment sumps,
and double-wall pipes applications
LV132
$
175
⻬ Three Distinct Outputs:
Dry, Water Present,
Fuel Present
⻬ Compact—Fits
Interstitial Spaces
⻬ Unaffected by Vapors;
Even at High
Concentrations
⻬ Easy Removal
and Re-installation
for Cleaning
⻬ No Moving Parts—
Long Life
Proven electro-optic and conductive
technologies are combined to
deliver advanced capabilities in the
LV132 discriminating liquid sensor.
Internal logic discriminates between
water- and hydrocarbon-based
liquids. No moving parts and
solid-state switching encased in a
rugged housing ensure dependable,
long service.
A slim, compact form allows easy
installation into interstitial areas of
double-wall pipes and tanks using
an integral pull ring to “snake” into
place. Remove the pull ring and the
LV132 installs into any tank or
reservoir via 1⁄4 FNPT fittings for
high, low, or intermediate level
detection. The LV132 sensor is
easy to remove, clean, and
reinstall after an alarm condition
is triggered, or for maintenance.
The LV132 electro-optical/
conductivity sensor contains an
infrared LED and a light receiver.
Continuous light from the LED is
directed into a prism which forms
the tip of the sensor. Two probes
extend from the prism to measure
conductivity.
With no liquid present, light from
the LED is reflected within the
prism to the receiver. When rising
liquid immerses the prism, the
Note: The LV132 sensor is a non-voltage-producing device and does not contain energy
storing components. However, since primary use is in hazardous locations, an appropriate
intrinsically safe (I.S.) interface device is required for its use.
K-71
15.7
(.62)
27.9
(1.10)
CONDUCTIVITY
SENSORS
REMOVABLE PVC
PULL RING
ELECTRO-OPTIC
CABLE
WIRING:
RED: 10 to 28 Vdc
BLACK: GROUND
GREEN: FUEL/OIL
WHITE: CONDUCTIVE
OUTPUT
HOLE THRU
3.2
(1/8 DIA)
1/4 NPT
81.8
(3.22)
*
LV132, $175,
shown actual size.
light is refracted out into the liquid,
leaving little or no light to reach the
receiver. Simultaneously, the
conductivity probes determine if the
liquid is conductive (water-based) or
non-conductive (hydrocarbonbased). Sensing the change in light
intensity and measuring the liquid’s
conductivity level, the receiver
actuates electronic switching within
the unit. A logic circuit built into the
sensor housing evaluates the two
inputs and gives one of three output
signals: Dry, Water Present, or
Hydrocarbon Present.
SPECIFICATIONS
Wetted Materials: Polysulfone, PVC,
316 Stainless Steel, Epoxy, Nylon
Operating Temperature: -17.8 to 80°C
(0 to 176°F)
Current Consumption: 18 mA,
Approximately
Output: TTL/CMOS Compatible. May
sink up to 40 mA up to 30 Vdc
Repeatability: ± 1 mm
Cable: Four (4) Conductor PVC
Jacketed (25 ft Extended)
Approvals: UL Classified for Class I,
Group D Hazardous Locations
Weight: 340 g (0.75 lb)
Dimensions: mm (in)
AVAILABLE FOR FAST DELIVERY!
To Order
(Specify Model No.)
Model No.
LV132 $175 Discriminating
Comes complete with 7.6 m (25") four (4)
conductor PVC jacketed cable and
operator’s manual.
Ordering Example: LV132 sensor, $175.
V
Electrical Parameters
Entity Parameters for 10-28 Vdc Input
Terminal V
MAX
Red/Black 38V 150 mA 0.052 µF 0
White/Black 38V 150 mA 0.052 µF 0
Green/Black 38V 150 mA 0.052 µF 0
I
MAX
C
I
I
MAX
CI+ Ccable ≤ CA (Barrier)
LI+ Lcable ≤ LA (Barrier)
L
I
Definitions:
VOC= Maximum Open Circuit Voltage
ISC= Maximum Short Circuit Current
CI= Internal Capacitance
LI= Internal Inductance
Output Logic
Green Wire Hydrocarbon
Probe (Non-Conductive) Output White Wire Water (Conductive)
Condition (Logic State) Output (Logic State)
Air “0” “1”
Water “0” “0”
Fuel “1” “1”
Not recommended for use in any liquid that crystallizes or leaves a solid residue.
Price Description
≥ VOC(Barrier)
MAX
≥ ISC(Barrier)
light sensor
Typical Wiring Diagram
Source voltage not greater than 250 Vac. Zener barriers must be installed in accordance
*
with barrier manufacturer’s instructions. Visit omega.com/sbg54803 for additional information.
K-72
K
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