User’s Guide
LL-01 “Sentio™”
& LL-10 Series
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omega.com
e-mail: [email protected]
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LVU-700
LVUD-101
Ultrasonic Point Level Switches
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UNPACKING INSTRUCTIONS
UNPACKING INSTRUCTIONS
Remove the Packing List and verify that you have received all equipment, includ-
ing 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. 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 reship-
ping is necessary.
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2
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TABLE OF CONTENTS
Page
Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Point Level Model Description . . . . . . . . . . . . . . . . . . . . . . . . . .4
Principles of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
System Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-8
Dimensional Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-10
3
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SYSTEM DESCRIPTIONS
1
GENERAL DESCRIPTION
These series of Liquid Level Detection systems are ideal, low cost ultrasonic liq-
uid level detection systems for many applications. They operate in a broad spec-
trum of viscous to light liquids.
PRINCIPLES OF OPERATION
2
The LL-10 Series operates using ultrasonic sound wave propagation. Ultrasonic
sound waves are greatly attenuated when transmitted through air. Conversely,
when liquid is present, transmission of the sound waves is greatly enhanced. The
electronic control unit generates electrical signals that are converted to bursts of
ultrasonic energy at the sensor. The ultrasonic bursts are transmitted across the liq-
uid sensing gap. Upon receipt of a valid signal, the solid state electronics gener-
ate a “data enable” condition indicating liquid is present. This signal energizes a
relay and/or provides an output condition.
NOTES:
1. Standard Sensor Material: 316 Stainless Steel. Solid one piece molded body
Tefzel is also available.
2. 3/4” NPT mounting is standard, different NPT and flanges are optional.
3. Standard length of the sensor is 2.50” with activation point 1/4” from the bot-
tom of the sensor. Extension up to 100” is available.
4
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INSTALLATION
3
FINAL INSTALLATION
Follow the instructions below:
1. Drill a suitable hole in the vessel or pipe wall and tap for 3/4” NPT. If this
walled vessel or material is not suitable for threading, weld or braze a bushing
to accept the sensor.
2. Screw the sensor in the threaded section and make sure that there is a good
seal. Use a pipe compound or sealing tape to avoid excessive tightening.
Do not over tighten.
3. Run the power and control wiring cable to the electronic control unit.
Observe all applicable electrical codes and proper wiring procedures.
MAINTENANCE
Electronics are constructed with solid state components and epoxy potted.
Periodically, check and clean the sensor when used with liquids which cause a
coating build up on the sensor. No other maintenance is required.
CLEANING
If the pipe or vessel to which the sensor is mounted is to be steam cleaned or
cleaned with abrasive detergents, remove the entire unit before cleaning by:
1. Disconnecting the power at source;
2. Opening the housing cover;
3. Removing power and control wiring cables;
4. Unthreading the sensor.
To reinstall, follow Installation Procedures
SYSTEM MALFUNCTION
Should the system malfunction, notify Omega immediately.
5
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3
ORDERING INFORMATION
SENSOR
SENSOR
MATERIAL
ELECTRONICS
INPUT
ELECTRONICS
PART NO.
MODEL
MOUNTING
OUTPUT
LVU-701
3/4” NPT
3/4” NPT
3/4” NPT
3/4” NPT
316LSS
Tefzel
6VDC-24VDC
1 AMP SPDT Relay
LVU-703
LVU-704
LVU-707
6VDC-24VDC
6VDC-24VDC
6VDC-24VDC
1 AMP SPDT Relay
2 Wire Loop Power
2 Wire Loop Power
316LSS
Tefzel
SENSOR
MOUNTING
SENSOR
MATERIAL
ELECTRONICS
INPUT
ELECTRONICS
OUTPUT
PART NO.
MODEL
LVU-705
1/4” NPT
1/4” NPT
316LSS
316LSS
6VDC-30VDC
6VDC-30VDC
2 Wire Loop power
1 A SPDT Relay
LVU-706
SENSOR
MOUNTING
SENSOR
MATERIAL
ELECTRONICS
INPUT
ELECTRONICS
OUTPUT
PART NO.
MODEL
LVUD-101
EPOXY
6VDC-30VDC
2 Wire Loop Power
Call OMEGA For Special Optional Features
APPLICATIONS: Pump Protection • Storage Tanks • Compressors
• Hydraulic Supply Lines • Semiconductor • Boiler Water Cutoff
• Sewage Systems • Pipe Lines • Medical
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6
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4
SYSTEM WIRING DIAGRAM
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7
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SYSTEM WIRING DIAGRAM
LOOP POWER OPTION
RELAY OPTION
8
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DIMENSIONAL DRAWINGS
5
9
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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:
FOR NON-WARRANTY REPAIRS, consult OMEGA
for current repair charges. Have the following
information available BEFORE contacting OMEGA:
1. Purchase Order number under which the product
was PURCHASED,
1. Purchase Order number to cover the COST
of the repair,
2. Model and serial number of the product under
warranty, and
3. Repair instructions and/or specific problems
relative to the product.
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.
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Where Do I Find Everything I Need for
Process Measurement and Control?
OMEGA…Of Course!
Shop online at omega.com
TEMPERATURE
Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Thermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies
Wire: Thermocouple, RTD & Thermistor
Calibrators & Ice Point References
Recorders, Controllers & Process Monitors
Infrared Pyrometers
PRESSURE, STRAIN AND FORCE
Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Transducers & Strain Gages
Load Cells & Pressure Gages
Displacement Transducers
Instrumentation & Accessories
FLOW/LEVEL
Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Rotameters, Gas Mass Flowmeters & Flow Computers
Air Velocity Indicators
Turbine/Paddlewheel Systems
Totalizers & Batch Controllers
pH/CONDUCTIVITY
Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ pH Electrodes, Testers & Accessories
Benchtop/Laboratory Meters
Controllers, Calibrators, Simulators & Pumps
Industrial pH & Conductivity Equipment
DATA ACQUISITION
Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Data Acquisition & Engineering Software
Communications-Based Acquisition Systems
Plug-in Cards for Apple, IBM & Compatibles
Datalogging Systems
Recorders, Printers & Plotters
HEATERS
Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Heating Cable
Cartridge & Strip Heaters
Immersion & Band Heaters
Flexible Heaters
Laboratory Heaters
ENVIRONMENTAL
MONITORING AND CONTROL
Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Ⅺ
ߜ Metering & Control Instrumentation
Refractometers
Pumps & Tubing
Air, Soil & Water Monitors
Industrial Water & Wastewater Treatment
pH, Conductivity & Dissolved Oxygen Instruments
M-2052/1005
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