Omega Products LVCN700 Installation Manual

http://www.omega.com

e-mail: [e-mail]

®

User’s Guide

LVCN700 Series

Multi-Point Ultrasonic Level Switch

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 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 should malfunction, 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 unautho-

rized modification. This WARRANTY is VOID if the unit shows evidence of having been tampered with or

shows evidence of being 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 which wear are not warranted, including but 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 writ-

ten. OMEGA warrants only that the parts manufactured by it will be as specified and free of defects.

OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATS0EVER,

EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY

WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DIS-

CLAIMED. 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 spe-

cial 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 W

ARRANTY

RETURNS, please have the fol-

lowing information available BEFORE contacting

OMEGA:

1. P.O. 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. P.O. number to cover the COST

of the repair,

2. Model and serial number of 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 1996 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 prior

written consent of OMEGA ENGINEERING, INC.

Servicing North America:

USA: 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

Tel: [phone]

FAX: [phone]

email: [e-mail]

For immediate technical or application assistance:

USA and Canada: Sales Service: 1-800-826-6342 / 1-800-TC-OMEGA

SM

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

SM

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

SM

Mexico En Espanol: [phone]-7803

e-mail: [e-mail]

FAX: [phone]

[e-mail]

Servicing Europe:

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

Tel: [phone]

FAX: [phone]

Toll Free: 0800-1-66342

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 BendTechnology Centre

ISO 9002 Certified Northbank, Irlam, Manchester

M44 5EX, England

Tel: [phone]

FAX: [phone]

Toll Free in England: 0800-488-488

e-mail: [e-mail]

omega.com

OMEGAnet

SM

On-Line Service Internet e-mail

http://www.omega.com [e-mail]

It is the policy of OMEGA 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 Engineering, Inc. accepts no liability for any errors it con-

tains, and reserves the right to alter specifications without notice.

WARNING: These products are not designed for use in, and should not be used for, patient connected applications.

Where Do I Find Everything I Need for

Process Measurement and Control?

OMEGA…Of Course!

Shop online at omega.com

TEMPERATURE



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



Transducers & Strain Gauges



Load Cells & Pressure Gauges



Displacement Transducers



Instrumentation & Accessories

FLOW/LEVEL



Rotameters, Gas Mass Flowmeters & Flow Computers



Air Velocity Indicators



Turbine/Paddlewheel Systems



Totalizers & Batch Controllers

pH/CONDUCTIVITY



pH Electrodes, Testers & Accessories



Benchtop/Laboratory Meters



Controllers, Calibrators, Simulators & Pumps



Industrial pH & Conductivity Equipment

DATA ACQUISITION



Data Acquisition & Engineering Software



Communications-Based Acquisition Systems



Plug-in Cards for Apple, IBM & Compatibles



Datalogging Systems



Recorders, Printers & Plotters

HEATERS



Heating Cable



Cartridge & Strip Heaters



Immersion & Band Heaters



Flexible Heaters



Laboratory Heaters

ENVIRONMENTAL
MONITORING AND CONTROL



Metering & Control Instrumentation



Refractometers



Pumps & Tubing



Air, Soil & Water Monitors



Industrial Water & Wastewater Treatment



pH, Conductivity & Dissolved Oxygen Instruments

M-4465/0707

OMEGA

®

TM

Step One

SPECIFICATIONS

Range: LVCN704: 2" to 4'

(5 cm to 1.2m)
LVCN709: 4" to 9.8'
(10 cm to 3m)
LVCN716: 4" to 16.4'
(10 cm to 5m)
LVCN126: 8" to 26.2'

(20 cm to 8m)
Repeatability: 0.25" (6 mm)
Adjustability: Over entire range
Hysteresis: LVCN704/709: 0.5" (1.2 cm)

(single set point)

LVCN716/726: 1" (2.5 cm)

(single set point)
Beam width: LVCN704/709: 2" (5 cm) dia.

LVCN716/726: 3" (7.6 cm) dia.
Dead band: LVCN704: 2" (5 cm)

LVCN709/716: 4" (10 cm)

LVCN726: 8" (20 cm)
LED indication: Power, relay and echo status
Calibration: Target, push button
Memory: Non-volatile
Supply voltage: AC: 95-250 VAC

DC: 12-28 VDC (Optional)
Consumption: AC: 20 watts max.

DC: 100 mA @ 24 VDC (Optional)
Contact type: (3) SPDT relays
Contact rating: 60 VA
Contact logic: Single point: alarm

Two point: latching or

out of bounds alarms

Duplex or Alternation:

(Relays 1 and 2 only)
Contact fail-safety: De-energizes during echo signal loss
Process temp.: F: -4° to 140°

C: -20° to 60°
Temp. comp.: Automatic
Electronics temp.: F: -40° to 160°

C: -40° to 71°
Pressure: 30 psi (2 bar) @ 25° C., derated @

1.667 psi (.113 bar) per °C. above

25° C.
Enclosure rating: NEMA 4X (IP65)
Enclosure vent: Water tight membrane
Encl. material: PC/ABS FR
Trans. material: PVDF Kynar®
Process mount: LVCN704/709: 1" NPT (1" G)

LVCN716/726: 2" NPT (2" G)
Mount. gasket: Viton®
Conduit entrance: Dual, 1/2" NPT
Classification: General purpose
CE compliance: EN 61326 EMC

[DC series only (DC powered)]

Handling Static-Sensitive Circuits/Devices: When han-

dling the Ultrasonic switch, the technician should follow
these guidelines to reduce any possible electrostatic charge
build-up on the technicians body and the electronic part.

1. Always touch a known good ground source before handling the

part. This should be repeated while handling the part and more
frequently after sitting down from a standing position, sliding
across the seat or walking a distance.

2. Avoid touching electrical terminals of the part unless making connections.

3. DO NOT open the unit cover until it is time to calibrate.

1.2"

(32 mm)

1.9"

(49 mm)

3.9"

(100 mm)

5.2"

(133 mm)

2.4"

(62 mm)

1" NPT

(1" G)

0.75"

(19 mm)

LU75

LU72

2.5"

(63 mm)

4.5"

(114 mm)

5.2"

(133 mm)

3.0"

(76 mm)

2" NPT

(2" G)

1.7"

(44 mm)

4.1"

(104 mm)

5.2"

(133 mm)

3.8"

(96 mm)

40

30

20

10

00

-40 -20 00 20 40 60 80

Acceptable

Range

Unacceptable

Range

Temperature/Pressure Derating

Operating Pressure (psi)

Temperature (C¡)

LVCN716
LVCN726

Enclosure (Side View)

LVCN704
LVCN709

Enclosure (Side View)

LVCN700 Series

Enclosure (Top View)

INTRODUCTION TECHNOLOGY

Step Three

A. Application: The general purpose ultrasonic level switch pro-

vides non-contact level detection up to 26’ or 8m with 3 relays. Each
relay can be configured on a single set point alarm, two latched set
points for automatic fill or empty, two set points for out of bounds
alarms or three set point (relays 1 and 2 only) alternation / duplexing
. The switch is well suited for a wide range of corrosive, waste and
slurry type media, and is broadly selected for atmospheric day tank,
pump lift station and waste sump applications.

B. Part Number: The part and serial numbers are located on the
wrench flat. Check the part number on the product label and confirm
which of the below model configurations you have purchased:

P

ar

t Number Range Supply Mount

LVCN704 4’ (1.2m) 95-250 VAC 1” NPT
LVCN704G 4’ (1.2m) 95-250 VAC 1” NPT
LVCN704-DC 4’ (1.2m) 12-28 VDC 1” NPT
LVCN704G-DC 4’ (1.2m) 12-28 VDC 1” NPT
LVCN709 9.8’ (3m) 95-250 VAC 1” NPT
LVCN709G 9.8’ (3m) 95-250 VAC 1” NPT
LVCN709-DC 9.8’ (3m) 12-28 VDC 1” NPT
LVCN709G-DC 9.8’ (3m) 12-28 VDC 1” NPT
LVCN716 16.4’ (5m) 95-250 VAC 1” NPT
LVCN716G 16.4’ (5m) 95-250 VAC 1” NPT
LVCN716-DC 16.4’ (5m) 12-28 VDC 1” NPT
LVCN716G-DC 16.4’ (5m) 12-28 VDC 1” NPT
LVCN726 26.2’ (8m) 95-250 VAC 2” NPT
LVCN726G 26.2’ (8m) 95-250 VAC 2” NPT
LVCN726-DC 26.2’ (8m) 12-28 VDC 2” NPT
LVCN726G-DC 26.2’ (8m) 12-28 VDC 2” NPT

C. NEMA 4X Enclosure:The enclosure has a flip cover with two
1/2” NPT female conduit ports and an internal terminal strip for
wiring. To open the enclosure, you will need a small insertion tool
such as a screwdriver. Insert the tool into the hole located at the
front of the enclosure and gently push on the latching mechanism
to release the cover. Rotate the hinged cover up for 135° access to
the faceplate and terminal strips. Before closing the enclosure,

make sure that the enclosure gasket is properly seated, and
that any conduit fittings, cable connectors or plugs are
installed correctly and sealed.

Step Tw o

About this Manual: PLEASE READ THE ENTIRE MANU-

AL PRIOR TO INSTALLING OR USING THIS PRODUCT. This
manual includes information on the LVCN700 series
Ultrasonic Level Switch. Please refer to the part number
located on the switch label to verify the exact model con­figuration which you have purchased.

User’s Responsibility for Safety: Omega manufactures a

broad range of level sensing technologies. While each of these sen­sors is designed to operate in a wide variety of applications, it is the
user’s responsibility to select a sensor model that is appropriate for
the application, install it properly, perform tests of the installed sys­tem, and maintain all components. The failure to do so could result
in property damage or serious injury.

Proper Installation and Handling: Only properly trained

staff should install and/or repair this product. Install the switch with
the included Viton gasket and never overtighten the switch within
the fitting. Always check for leaks prior to system start-up.

Wiring and Electrical: A supply voltage of 95-250 VAC is

used to power the Ultrasonic switch, and a supply voltage of 12-28
VDC is used to power the optional DC version of the LVCN700
series Ultrasonic switch. Electrical wiring of the switch should be
performed in accordance with all applicable national, state, and
local codes.

Material Compatibility: The LVCN700 series enclosure is

made of a flame retardant Polycarbonate (PC/ABS FR). The trans­ducer is made of Polyvinylidene Fluoride (PVDF). Make sure that
the model which you have selected is chemically compatible with
the application media.

Enclosure: While the LVCN700 series housing is liquid-resis-

tant, the unit is not designed to be operational when immersed. It
should be mounted in such a way that the enclosure and transduc­er do not come into contact with the application media under nor­mal operational conditions.

Make a Fail-Safe System: Design a fail-safe system that

accommodates the possibility of switch and/or power failure.
OMEGA recommends the use of redundant backup systems and
alarms in addition to the primary system.

Flammable, Explosive or Hazardous Applications:

The LVCN700 series should not be used within classified haz-

Warning

Always use the Viton gasket when installing the Ultrasonic
switch, and make sure that all electrical wiring of the switch
is in accordance with applicable codes.

LVCN726

Shown

RELAY

1

RELAY2RELAY

3

L

1 L2

POWER

Cal. Run

High Low

Select