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8

 

of

 

23

 

 

WIRING

 

(continued)

 

Step

 

Four

 

General

 

notes

 

for

 

electrical

 

connections,

 

usage

 

and

 

safety:

 

 

Where

 

personal

 

safety

 

or

 

significant

 

property

 

damage

 

can

 

occur

 

due

 

to

 

a

 

spill,

 

the

 

installation

 

must

 

have

 

a

 

redundant

 

backup

 

safety

 

system

 

installed.

 

 

Wiring

 

should

 

always

 

be

 

completed

 

by

 

a

 

licensed

 

electrician.

 

 

Supply

 

voltage

 

should

 

never

 

exceed

 

28

 

VDC.

 

 

The

 

sensor

 

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

 

Hazardous

.

 

Voltage

 

Output

 

LVU2800

 

Series

 

can

 

be

 

used

 

as

 

a

 

0

 

to

 

5

 

or

 

0

 

to

 

10

 

VDC

 

output

 

device.

  

A

 

resistor

 

will

 

need

 

to

 

be

 

added

 

to

 

the

 

circuit

 

to

 

enable

 

a

 

voltage

 

output

 

(refer

 

to

 

the

 

wiring

 

diagram

 

below).

  

 

0

5

 

VDC

 

output

 

o

 

Add

 

a

 

250

 

Ohm

 

resistor

 

o

 

Actual

 

output

 

will

 

be

 

0.8

 

to

 

5

 

VDC

 

 

0

10

 

VDC

 

output

 

o

 

Add

 

a

 

500

 

Ohm

 

resistor

 

o

 

Actual

 

output

 

will

 

be

 

2

 

to

 

10

 

VDC

 

 

 

 

 

Содержание LVU2800 Series

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

Страница 2: ...2 of 23...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 22: ...22 of 23...

Страница 23: ...23 of 23 M 5127 0312...

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