Omega Products LVU10 Installation Manual

User’s Guide

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LVU10

Ultrasonic Level Measurement System -Two Wire

Servicing North America:

U.S.A.: One Omega Drive, Box 4047

ISO 9001 Certified Stamford, CT 06907-0047

Tel: [phone] FAX: [phone]
e-mail: [e-mail]

Canada: 976 Bergar

Laval (Quebec) H7L 5A1, Canada
Tel: [phone] FAX: [phone]
e-mail: [e-mail]

For immediate technical or application assistance:

U.S.A. and Canada: Sales Service: 1-800-826-6342 / 1-800-TC-OMEGA

®

Customer Service: 1-800-622-2378 / 1-800-622-BEST

®

Engineering Service: 1-800-872-9436 / 1-800-USA-WHEN

®

Mexico: En Espan˜ol: [phone]-7803 e-mail: [e-mail]

FAX: [phone] [e-mail]

Servicing Europe:

Benelux: Postbus 8034, 1180 LA Amstelveen, The Netherlands

Tel: [phone] FAX: [phone]
Toll Free in Benelux: 0800 0993344
e-mail: [e-mail]

Czech Republic: Frystatska 184, 733 01 Karvina´, Czech Republic

Tel: [phone] FAX: [phone]
Toll Free: 0800-1-66342 e-mail: [e-mail]

France: 11, rue Jacques Cartier, 78280 Guyancourt, France

Tel: [phone] FAX: [phone]
Toll Free in France: 0800 466 342
e-mail: [e-mail]

Germany/Austria: Daimlerstrasse 26, D-75392 Deckenpfronn, Germany

Tel: [phone] FAX: [phone]
Toll Free in Germany: 0800 639 7678
e-mail: [e-mail]

United Kingdom: One Omega Drive, River Bend Technology Centre

ISO 9002 Certified Northbank, Irlam, Manchester

M44 5BD United Kingdom
Tel: [phone] FAX: [phone]
Toll Free in United Kingdom: 0800-488-488
e-mail: [e-mail]

OMEGAnet®Online Service Internet e-mail

omega.com [e-mail]

It is the policy of OMEGA Engineering, Inc. to comply with all worldwide safety and EMC/EMI
regulations that apply. OMEGA is constantly pursuing certification of its products to the European New
Approach Directives. OMEGA will add the CE mark to every appropriate device upon certification.

The information contained in this document is believed to be correct, but OMEGA accepts no liability for any
errors it contains, and reserves the right to alter specifications without notice.
WARNING: These products are not designed for use in, and should not be used for, human applications.

DESCRIPTION AND OPERATION

LVU10 SERIES ULTRASONIC LEVEL TRANSMITTER.

INSTRUCTION

SHEET

The LVU10 series is a continuous non-contact level transmitter and distance measuring device. It
measures level or distance using ultrasonic (acoustic-sound) energy. Thr oughout this manual we will
reference the device for use as a level instrument, although it is equally suited for distance in applications
like collision avoidance or paper roll filling. The sensor is mounted in the top of a vessel pointing down at
the liquid or slurry. A sound wave (beam of
sound energy) is transmitted at the surface and
reflected by it. This "echo" is processed using
Gaussian Signal Averaging and is automatically
temperature compensated providing an analog
output (4-20 mA) proportional to the level.
The factory preset output cannot be adjusted
providing a calibration free, "plug-and-play"
level sensor for use in most liquids and slurries
that do not foam heavily. To rescale (if
required) the two-wir e output, simply take it
into a panel meter, DCS, PLC, SCADA or R TU
and use the receiving devices’ scaling features.
The LVU10 is a cost competitive, DC powered,
corrosion resistant, fixed output transmitter. If
you need more versatility, contact closures,
high temperature operation, or any other
feature that the LVU10 does not have, please
contact Omega.
You also may want to consider purchasing a
high or low level alarm for use
with your LL 395. These switches can greatly
improve your pr ocess and pr ovide additional
security by giving you a redundant (back-up)
overflow or pr oduct loss signal.

Tank Top

Deadzone

(No Readings In This Area)

Minimum Range

(As Specified)

Maximum Range

(As Specified)

LVU10 OPERATION

4-20mA Output

Sensor Face

Sound

Beam

Thank you for purchasing the LVU10 Level transmitter. Call Omega customer service if you need any assistance.
Always install instruments and controls following NEC and local guidelines for safety.

 Verify compatibility with your process: pressure, tempera-

ture, construction, area classification.

 Don’t over tighten process or conduit connection.

Housing is plastic!

 Run conduit down and away from sensor and use drip

legs to eliminate moisture.

 Use DC power only (18-36 Vdc). 600 ohms max.
 Do not use in foaming liquids (some bubbles OK).
 Air or nitrogen above liquid is acceptable. Other gases

may affect accuracy- consult factory.

 Heavy/moist air vapors attenuate signal and reduce

range.

 Use in powders reduces range by about 50%.
 Connect with shielded cable. Grd. at one end only.
 Install with sensor face fully inside vessel. Avoid obstruc-

tions and nozzles.

 Deadzone is 6-12 inches from sensor face. No readings

possible within this area. (See order Info)

 Output is 20.5 mA when echo signal is lost.

Try to position sensor

1 ft. from the wall

for every 1 ft. of range.

Less on smooth walls

is acceptable.

(1m from wall for

each 1m range)

 The sensor transmits a conical beam. Mount so beam will

only intersect the target. Avoid obstructions. Smooth
vessel walls, parrellel to the sensor, may encroach on the
beam without problem.

 Conductive, nonconductive, opaque, sticky, viscous, cor-

rosive and dirty liquids can be measured with the LVU10.

LL-395 DO’S & DONT’S

Recessed Sensor

Not Recommended

Consult Factory

Vapor

Fill Pipe

Obstruction

Center or Side

OK

or

Fill

NO

Submerged

LVU10 BEAM ANGLE

Foam

NO

Side or Bottom Mount

OK For Distance

Agitator

Affects Accuracy

Consult Factory

NO

OK OK

CALIBRATION

Calibration is factory pre-set and permanently fixed, see Model Selection for details.

ONLY IF REQUIRED: Rescale the output of your LVU10 using your receiving devices’ scaling features. If it
is a Panel Meter, consult the Instruction Manual for the meter or call the meter manufacturer. They do this
often and can walk you though it very quickly. Typically there ar e two methods for scaling. One uses
the actual output of the sensor, which is done by changing the level of the vessel and inputting the
Display Values you require. The other requires calculating the input curr ent at 0% and 100% level points.
Use whichever method is best for your application. Too simulate "changing the vessel level" before sensor
installation, simply wire the LVU10 to your meter and use a wall to simulate the vessel contents.
Remember: As you move the sensor closer to the wall, you are moving closer to 100% or Full and as you
move the sensor further away, the vessel is getting closer to Empty or 0%. Use a solid wall and hold the
sensor as perpendicular as possible to the wall surface.

Blk Wire

– +

24VDC Panel Meter

– +

LVU10

Red Wire

Shield (Grd. at one end)

LVU10 WIRING

MODEL SELECTION SPECIFICATIONS

ORDERING SYSTEM

PART NUMBER RANGE IN LIQUIDS/SLURRIES

Part No. Standard Output-4mA @ Min. Range,

20mA @ Max. Range

LVU11 6-66 inches (152-1667mm), 4-20mA
LVU12 6-126 inches (152-3200mm), 4-20mA
LVU13 12-192 inches (304-4876mm), 4-20mA

LVU14 12-252 inches (304-6400mm), 4-20mA
Part No. Reverse Acting Output-20mA @ Min. Range,

4mA @ Max. Range

LVU11R 6-66 inches (152-1667mm), 20-4mA

LVU12R 6-126 inches (152-3200mm), 20-4mA
LVU13R 12-192 inches (304-4876mm), 20-4mA
LVU14R 12-252 inches (304-6400mm), 20-4mA

SPECIFICATIONS

PART NUMBER RANGE IN LIQUIDS/SLURRIES

Range: .5-21 ft. max. (.15-6.4m), model dependant
Beam Angle: Less than 12 degrees
Repeatability: ± .0005” (.012 mm), typical
Accuracy: .025%, full scale
Response: .5-1.5 seconds, output dependant
Temperature Compensation: Automatic
Input Power: 18-36 Vdc (reverse protected)
Signal Output: 4-20mA, two-wire
Max Impedance: 600 ohms
Output Configuration: 20mA=max. range,

4mA=min. range standard, see Ordering System for
options

Failsafe: 20.5mA @ loss of echo signal
Operating Temperature: -40F to 160F (-40 to 71C)
Pressure: 40 psig, max. (2.7 bar) at 77F (25C)
Process Connection: 2” NPT w/2” (50.8 mm)

insertion
Conduit Connection: 3/4NPT (NEMA 4X junction

box optional Part No. 200030)
Cable: 2 conductor shielded, 20 ga., 10 ft. (3m)
Sensor/Enclosure: Corrosion resistant Tefzel
Enclosure Rating: NEMA 6X (IP67)
Approvals: IS with Approved Barriers (pending), CE

®

3

UNPACKING INSTRUCTIONS

Remove the Packing List and verify that you have received all equipment, including the following (quantities in paren­theses):

Ultrasonic Level Measurement System (1)
Operator’s Manual (1)
If you have any questions about the shipment, please call the Omega Customer Service Department at
1-800-872-9436 When you receive the shipment, inspect the container and equipment for signs of damage.
Note any evidence of rough handling in transit. Immediately report any damage to the shipping agent.

Note:
The carrier will not honor damage claims unless all shipping material is saved for inspection. After
examining and removing contents, save packing material and carton in the event reshipping is nec­essary.

WARRANTY/ DISCLAIMER

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and
workmanship for a period of 13 months from date of purchase. OMEGA’s WARRANTY adds an
additional one (1) month grace period to the normal one (1) year product warranty to cover
handling and shipping time. This ensures that OMEGA’s customers receive maximum
coverage on each product.

If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer
Service Department will issue an Authorized Return (AR) number immediately upon phone or
written request. Upon examination by OMEGA, if the unit is found to be defective, it will be
repaired or replaced at no charge. OMEGA’s WARRANTY does not apply to defects resulting
from any action of the purchaser, including but not limited to mishandling, improper interfacing,
operation outside of design limits, improper repair, or unauthorized modification. This
WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence
of having been damaged as a result of excessive corrosion; or current, heat, moisture or vibra­tion; improper specification; misapplication; misuse or other operating conditions outside of
OMEGA’s control. Components in which wear is not warranted, include but are not limited to
contact points, fuses, and triacs.

OMEGA is pleased to offer suggestions on the use of its various products. However,
OMEGA neither assumes responsibility for any omissions or errors nor assumes liability
for any damages that result from the use of its products in accordance with information
provided by OMEGA, either verbal or written. OMEGA warrants only that the parts
manufactured by the company will be as specified and free of defects. OMEGA MAKES
NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER,
EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED WARRANTIES
INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF LIABILITY: The remedies of pur­chaser set forth herein are exclusive, and the total liability of OMEGA with respect to this
order, whether based on contract, warranty, negligence, indemnification, strict liability or
otherwise, shall not exceed the purchase price of the component upon which liability is
based. In no event shall OMEGA be liable for consequential, incidental or special damages.

CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as
a “Basic Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity;
or (2) in medical applications or used on humans. Should any Product(s) be used in or with any
nuclear installation or activity, medical application, used on humans, or misused in any way,
OMEGA assumes no responsibility as set forth in our basic WARRANTY/ DISCLAIMER language,
and, additionally, purchaser will indemnify OMEGA and hold OMEGA harmless from any liability
or damage whatsoever arising out of the use of the Product(s) in such a manner.

RETURN REQUESTS/INQUIRIES

Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department.
BEFORE RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN
AUTHORIZED RETURN (AR) NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT
(IN ORDER TO AVOID PROCESSING DELAYS). The assigned AR number should then be
marked on the outside of the return package and on any correspondence.

The purchaser is responsible for shipping charges, freight, insurance and proper packaging to
prevent breakage in transit.

FOR WARRANTY

RETURNS, please have
the following information available BEFORE
contacting OMEGA:

1. Purchase Order number under which

the product was PURCHASED,

2. Model and serial number of the product

under warranty, and

3. Repair instructions and/or specific

problems relative to the product.

FOR NON-WARRANTY REPAIRS,

consult
OMEGA for current repair charges. Have the
following information available BEFORE
contacting OMEGA:

1. Purchase Order number to cover the

COST of the repair,

2. Model and serial number of the

product, and

3. Repair instructions and/or specific problems

relative to the product.

OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible.
This affords our customers the latest in technology and engineering.

OMEGA is a registered trademark of OMEGA ENGINEERING, INC.
© Copyright 2005 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied,

reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without
the prior written consent of OMEGA ENGINEERING, INC.

Where Do I Find Everything I Need for

Process Measurement and Control?

OMEGA…Of Course!

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TEMPERATURE

䡺⻬

Thermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies

䡺⻬

Wire: Thermocouple, RTD & Thermistor

䡺⻬

Calibrators & Ice Point References

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Recorders, Controllers & Process Monitors

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Infrared Pyrometers

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䡺⻬

Transducers & Strain Gages

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Load Cells & Pressure Gages

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Displacement Transducers

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Instrumentation & Accessories

FLOW/LEVEL

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Rotameters, Gas Mass Flowmeters & Flow Computers

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Air Velocity Indicators

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Turbine/Paddlewheel Systems

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Totalizers & Batch Controllers

pH/CONDUCTIVITY

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pH Electrodes, Testers & Accessories

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Benchtop/Laboratory Meters

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Controllers, Calibrators, Simulators & Pumps

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Industrial pH & Conductivity Equipment

DATA ACQUISITION

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Data Acquisition & Engineering Software

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Communications-Based Acquisition Systems

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Plug-in Cards for Apple, IBM & Compatibles

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Datalogging Systems

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Recorders, Printers & Plotters

HEATERS

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Heating Cable

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ENVIRONMENTAL
MONITORING AND CONTROL

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Air, Soil & Water Monitors

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pH, Conductivity & Dissolved Oxygen Instruments

M-4202/1005