Omega Products LVCN-51 User Manual
Ultrasonic level transmitter
LVU-2001 Series
U Accurate and Reliable
Level Measurement From
15.2 cm to 3.7 m (0.5 to 12')
U Fixed Range–No Programming
Required
U Low-Cost Solution for OEM and
Process Applications
U Compact Size and 5 cm (2")
Transducer for Small Tanks
U PP Enclosure Rated NEMA 4X
(IP65) with PVDF Transducer
U Fail-Safe Intelligence Provides
Maximum Process Safety
The two-wire, bulk tank ultrasonic
level transmitter is mounted through
the top wall of the tank and provides
non-contact measurement up to
3.7 m (12'). The range is fixed:
4 mA = 144" or 12' (distance from
sensor) and 20 mA = 6" or 0.5'.
No programming is required.
With non-contact technology, the
transmitter is an excellent choice
for applications with dirty, coating,
corrosive type liquids. The compact
design is the perfect size for small
tank applications.
A high-frequency ultrasonic sound
wave is pulsed three times per second
from the base of the transducer.
The sound wave reflects against the
APPLICATION VARIABLES
Variable Yes No
General Purpose U
Conductive U
Non-conductive U
D Conductivity U
Contact U
Non-contact U
Clean U
Dirty U
Coating U
Non-coating U
Liquid
Vapors U
D Gas Density U
Vacuum U
Ambient Pressure U
Low Pressure U
Medium Pressure U
Intrinsically Safe U
Integral Relay U
Foam U
LVU-2001, shown
smaller than actual size.
process medium below
and returns to the transducer.
The microprocessor-based
electronics measure the time of flight
between the sound generation and
receipt, and translates this figure into
the distance between the transmitter
and process medium below.
SPECIFICATIONS
Range: 15.2 cm to 3.7 m
(0.5 to 12')
Accuracy: ±0.25% of span in air
Resolution: 3 mm (0.125")
Frequency: 50 kHz
Pulse Rate: 3 per second
Beam Width: 8° conical
Dead Band: 15.2 cm (0.5') min.
standard conditions
Supply Voltage: 12 to 36 Vdc
Loop Resistance: 600 Ω @ 36 Vdc
Signal Output: 4 to 20 mA
Fail-Safe Diag.: Reverts to 22 mA
LED Indication: Power and fail-safety
Temp. Rating: -40 to 60°C (-40 to 140°F)
Temp. Comp.: Over entire range
Pressure Rating: 2 bar (30 psig) @ 25°C,
derated @ .113 bar (1.667 psig) per °C
above 25°C
Enclosure Rating: NEMA 4X (IP65)
Enclosure Mat’l: PP (U.L. 94 VO)
Transducer Mat’l: PVDF
Mounting Threads: 2 NPT or 2 G
Conduit Conn.:
Mounting Gasket: FKM
1
⁄2 NPT
for LVU-2002
To Order Visit omega.com/lvu2000 for Pricing and Details
Model No. Description
LVU-2001 Ultrasonic level transmitter, 2 NPT
LVU-2002 Ultrasonic level transmitter, 2 G
LVCN-51 Controller with LED display
Comes with complete operator’s manual.
Ordering Examples: LVU-2001, ultrasonic level transmitter with LVCN-51 controller,
LVU-2001, ultrasonic transmitter.
K-19
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