Introduction technology – Omega Vehicle Security LVCN700 Series User Manual

Page 3

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:

Part 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 Two

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 con-

figuration which you have purchased.

User’s Responsibility for Safety:

Omega manufactures a

broad range of level sensing technologies. While each of these sen-

sors 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 sys-

tem, 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 trans-

ducer 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 transduc-

er do not come into contact with the application media under nor-

mal 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

POWER

Cal. Run

High

Low

Select