Omega Products LVU-301 User Manual

THREE-WIRE ULTRASONIC LEVEL TRANSMITTER
LVU-301
$
950
All Models
8° Beam Allows
Application in Restricted Environments
Indicates Level in Inches or Centimeters
Pushbutton Calibration
For All User Set Points
Built-In 10A Relay May
Be Configured For Alarm or Automatic Fill/Empty Operations
Fail-Safe Relay Logic
Provides Echo and Power Loss Safety
APPLICATION
The three-wire ultrasonic level transmitter is the compact solution for non-contact continuous level measurement in process vessels, storage tanks and open channels. The transmitter also features a built-in 10A relay which can be configured as an alarm on a single set point or latched on two different set points for automatic fill or empty operations. Industrial and municipal liquid examples include sodium hydroxide, wastewater, resin, wax, liquor and bleach.
An ultrasonic sound wave is pulsed eight times per second from the base of the transducer. The sound wave reflects against the 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.
APPLICATION VARIABLES
Variable Yes No
oam
F
onductive
C Non-conductive Conductivity
ontact
C
on-contact
N Clean Dirty
Liquid
Non-coating
apors
V Gas Density Vacuum Ambient pressure Low Pressure
edium pressure
M
SPECIFICATIONS
Range: 0.2 to 7.5 m (0.5 to 24.5') Accuracy: ±0.25% of span Resolution: 3 mm (0.125") Frequency: 50 kHz Pulse Rate: 8 pulses/second Blocking Distance: 15.2 cm (6")
minimum
Display Type: 4 segment LED Display Units: Inch/cm Supply Voltage: 14 to 36 Vdc Consumption: 200 mA Current Flow: Source/sink Signal Output: 4 to 20 mA,
12 to 36 Vdc
Signal Averaging: Fast/slow Calibration: Pushbutton Relay Current: 10 A Relay Output: 250 Vac, 10A,
1/2 hp, SPDT
To Order (Specify Model Number)
Model No. Price Description
LVU-303 $950 Ultrasonic three-wire transmitter, sourcing (4 to 20 mA) LVU-301 950 Ultrasonic three-wire transmitter, sinking (4 to 20 mA)
Accessories
Model No. Price Description
LVCN-51 $345 Continuous relay controller with LED display
Comes complete with operator’s manual. The sourcing transmitter provides internal 4 to 20 mA excitation and should be used
with a sinking device. The transmitter with sinking output requires external excitation or should be used with a sourcing device, such as the LVCN-51 continuous relay controller.
Ordering Example: LVU-303, ultrasonic, three-wire transmitter, sourcing (4 to 20 mA), CE approved, $950.
Recommended Reference Book: Introduction to Design for Civil Engineers,
CE-1917, $29. Visit omega.com/bobi for Additional Books
K-16
LVU-303, $950, shown smaller than actual size.
Relay Indication: ON/OFF status Fail-Safe Diagnostic:
Relay reverts to safe position
Temperature Rating:
-40 to 60°C (-40 to 140°F)
Temp. Compensation:
Automatic over entire range Pressure Rating: 30 psi @ 25°C,
derated @1.667 psi per °C above 25°C
Enclosure Rating: NEMA 4X (IP65) Enclosure Material: Polypropylene Transducer Material: PVDF Mounting Threads: 2 NPT Dimensions: 71 D x 159 mm H
(2.8 x 6.3")
AVAILABLE FOR FAST DELIVERY!
K
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