background image

 

 

5

 

of

 

23

 

SAFETY

 

PRECAUTIONS

 

Step

 

Three

 

About

 

this

 

Manual:

 

PLEASE

 

READ

 

THE

 

ENTIRE

 

MANUAL

 

PRIOR

 

TO

 

INSTALLING

 

OR

 

USING

 

THIS

 

PRODUCT.

  

This

 

manual

 

includes

 

information

 

on

 

the

 

LVU2800

 

Series

 

Ultrasonic

 

Level

 

Switch

 

from

 

OMEGA

 

ENGINEERING.

 

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

 

ENGINEERING

 

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

 

professional

 

staff

 

should

 

install

 

and/or

 

repair

 

this

 

product.

  

Install

 

the

 

switch

 

with

 

the

 

included

 

FKM

 

gasket

 

and

 

never

 

over

 

tighten

 

the

 

switch

 

within

 

the

 

fitting.

  

Always

 

check

 

for

 

leaks

 

prior

 

to

 

system

 

start

up.

 

Wiring

 

and

 

Electrical:

 

 

A

 

supply

 

voltage

 

of

 

12

 

to

 

28

 

VDC

 

is

 

used

 

to

 

power

 

the

 

LVU2800

 

Series.

  

Electrical

 

wiring

 

of

 

the

 

transmitter

 

should

 

be

 

performed

 

in

 

accordance

 

with

 

all

 

applicable

 

national,

 

state,

 

and

 

local

 

codes.

  

Material

 

Compatibility:

   

The

 

enclosure

 

is

 

made

 

of

 

Polycarbonate

 

(PC).

   

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

 

switch

 

housing

 

is

 

liquid

resistant

 

the

 

LVU2800

 

Series

 

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.

   

The

 

enclosure

 

has

 

a

 

flip

 

cover

 

with

 

dual

 

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.

  

Loosen

 

the

 

locking

 

screw

 

located

 

at

 

the

 

top

 

front

 

of

 

the

 

enclosure.

  

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.

 

Handling

 

Static

Sensitive

 

Circuits/Devices:

  

When

 

handling

 

the

 

transmitter,

 

the

 

technician

 

should

 

follow

 

these

 

guidelines

 

to

 

reduce

 

any

 

possible

 

electrostatic

 

charge

 

build

up

 

on

 

the

 

technician’s

 

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.

 

 

Summary of Contents for LVU2800 Series

Page 1: ...LVU2800 Series Ultrasonic Level Transmitter...

Page 2: ...2 of 23...

Page 3: ...il Safe Hold Last Empty Full 21 mA 22 mA Easy to reverse mA output 4 20 mA to 20 4 mA Increased output filtering Table of Contents Introduction 3 Specifications 4 Dimensions 4 About this manual 5 Wiri...

Page 4: ...Feet m or percent Supply voltage 12 28 VDC Loop resist 500 Ohms 24 VDC Signal output 4 20 mA two wire Signal invert 4 20 mA 20 4 mA Signal fail safe 4mA 20 mA 21 mA 22 mA hold last Process temp F 4 t...

Page 5: ...he 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 switch housing is liquid...

Page 6: ...sure that all electrical wiring of the switch is in accordance with applicable codes Components LVU2800 Series is offered in three different models Depending on the model purchased you may or may not...

Page 7: ...review of wiring the LVU2800 Series to common display controllers and PLC s Proportional Level Controller LVCN 51 Series JWA mode Factory Setting Proportional Level Controller LVCN 51 Series JWB mode...

Page 8: ...sor materials must be chemically compatible with the liquids to be measured Design a fail safe system for possible sensor and or power failure Never use the sensor in environments classified as Hazard...

Page 9: ...played approximately 5 seconds The MENU items will rotate through display press SELECT to change an item Many UNITS of measurement In the MENU mode press SELECT when UNITS is display then select INCHE...

Page 10: ...height of the liquid from the bottom of the tank o REV MA Allows the transmitter to reverse the current output such that 4 mA is at FULL and 20 mA is at EMPTY o Press Exit to return to the Top level...

Page 11: ...ng the level of liquid in Percent Omega Engineering recommends that when selecting PERCENT configure the HEIGHT and FILL H settings before selecting PERCENT in order to span the LVU2800 Series for you...

Page 12: ...e AIR mode Will display the distance from the bottom of the sensor to the surface of the liquid LIQUID mode Will display the height of liquid measured from the bottom of the tank How to change the dis...

Page 13: ...ss and hold SELECT Approximately 2 seconds until SAVED is displayed 5 When FILL H appears press SELECT 6 Using the UP and DOWN buttons set the Fill Height FILL H to the maximum fill height of the liqu...

Page 14: ...ppears press SELECT 3 When REV appears press SELECT 4 When EXIT appears press SELECT return to Top Level Menu LVU2800 Series is now in the Reverse mode To switch back to the Normal mode follow the ins...

Page 15: ...vel Menu How to set using Target Calibration Full Instead of measuring for Full tank the Full distance can be set automatically This method requires that the tank be Full or at the level that is consi...

Page 16: ...m 6 Avoid mounting in the center of a dome top tank 7 In cone bottom tank position the sensor over the deepest part of the tank Do not install at angle relative to the liquid Do not install within 3 o...

Page 17: ...educer bushing b Avoid tank adapter thread x thread styles and or pipe stops forward of the installed transducer c Always mount the tank adapter so the majority of fitting is outside the tank i Never...

Page 18: ...he plane of the flange such as the Banjo 1 Poly ANSI Flange series AF100 c Use a flange with a 2 thread and add a 2 to 1 reducer bushing to complete the installation 2 Flange w thread out of plane 2 F...

Page 19: ...er bushing to attach the LVU2800 Series to the pipe i With the LVU2810 series be sure to use a plastic reducing bushing 2 Thread x 1 Thread fitting or 2 Slip x 1 Thread fitting d The pipe length shoul...

Page 20: ...onfiguration back to the original factory settings Follow the instructions below to reset LVU2800 Series 1 From the main MENU level press SELECT when VALUES appears 2 When RESET appears press the SELE...

Page 21: ...sound pulses are not reaching the transducer First cycle power off and on waiting 5 seconds between the off and on states If problem persists check the installation fitting against the Installation in...

Page 22: ...22 of 23...

Page 23: ...23 of 23 M 5127 0312...

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