Omega Products LVU-1502-LP Installation Manual

Millennium

Two / Four Wir e

User’s Guide

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LVU1500 Series

Ultrasonic Level Measurement Systems - Two / Four Wire

Servicing North America:

U.S.A.: One Omega Drive, P.O. 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 Karviná, 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.

UNPACKING INSTRUCTIONS

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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. 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.

For Ultrasonic Continuous Level Two/Four Wire

TABLE OF CONTENTS

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Chapter 1 System Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Chapter 2 Principles of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Chapter 3 Installation

Control Unit Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..5

Sensor Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..5

Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Chapter 4 Programming Description

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Calibration Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Chapter 5 Calibration Diagram

Diagram #1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Diagram #2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Diagram #3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Diagram #4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Dimensional Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Page

For Ultrasonic Continuous Level Two/Four Wire

SYSTEM DESCRIPTIONS

GENERAL DESCRIPTION

The Two / Four Wire Series Liquid Level systems are state-of-the-art
level measurement instruments. Based on the latest ultrasonic technology, the
LVU-1500 Series provide an ef ficient, r eliable and cost effective means of level
control.

The LVU-1500 Series consists of two major components, a non-contacting ultra­sonic sensor and a compact, integral electronic control.

The unit is available in a variety of sizes and materials to suit virtually any applica­tion. Standard mounting configurations include 3/4” and 2” NPT fittings. Flange
mounting is also available to meet user specifications. Sensor material construc­tion includes 316SS, Kynar or Teflon.

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PRINCIPLES OF OPERATION

PRINCIPLES OF OPERATION

In operation, the electronics generate an electronic signal which is converted by
the sensor (mounted on the top of the vessel) to a burst of ultrasonic pulses.
These pulses are transmitted through the air towar d the liquid surface. As the
pulses reach the liquid sur face, they ar e r eflected back to the sensor. Those
received echoes are converted back to an electr onic signal which is then sent to
the microprocessor. The microprocessor uses the r eturn signals to calculate the
time it takes for the pulses to travel to the liquid surface and back. This “Time of
Flight” is directly proportional to the distance of the liquid surface from the sen­sor. The microprocessor then compares these calculated values with user pro­grammed system parameters to provide the requir ed control outputs.

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For Ultrasonic Continuous Level Two/Four Wire

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