SOR Echosonix U11 Manual de instrucciones

Form 1186 (05.13) ©SOR Inc.

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U11 Loop Powered Transmitter

General Instructions

Registered Quality System to ISO 9001

Design and

specifications are

subject to change

without notice.

For latest revision, go to

www.sorinc.com

NOTE: If you suspect that a product is defective, contact the factory

or the SOR

Representative in your area for a return authorization

number (RMA). This product should only be installed by trained and competent personnel.

Table of Contents

Safety............................................ 2

Quick Start Installation Guide................ 2

Mounting the Transducer ..................... 4

Typical Mounting Guidelines................. 4

Installation on Solids ......................... 5

Wiring Instructions ............................ 6

Keypad Interface ............................... 7

LCD Display..................................... 8

Field Programming ............................ 9

User Dened Values..........................10

Menu Structure................................12

Dimensions ....................................14

Specications .................................16

Troubleshooting ...............................16

The U11 is a non-contact ultrasonic level-sensing device that operates from loop power. It

provides the following features for easier customer installation and operation:

Rugged, industrial design with cast aluminum explosion proof housing

Easy to use, plain English menus

All values entered in engineering units

4-20mA signal may easily be reversed to 20-4mA

Actual 4 and 20mA endpoints may be fine tuned

Choice of echo types – first, last and largest

Automated echo recognition for minor false echoes

Bin mapping to eliminate major false echoes

These instructions provide information for mounting, process

and electrical connections and field programming of the U11 loop

powered ultrasonic transmitter. The U11 incorporates a transducer

for sending and receiving an ultrasonic signal and an electronics

processing package. The ultrasonic signal is very powerful and may

cause hearing damage – refer to the safety instructions on page 2.

The electronics package is mounted on top of the transducer via a

permanent mechanical connection.

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Switch and Switch Chamber Installation

Safety

Prior to installation, review these instructions entirely. Transducer mounting location is

critical to proper operation. Most settings can be programmed prior to installation.

Electrical Safety

The U11 is an electrically powered transmitter. Common electrical safety procedures must

be followed when working with this equipment. All wiring should be per local and national

standards. Do not open the cover on an energized unit in an explosion proof atmosphere.

Do not handle circuit boards when energized.

Sound Protection

The U11 produces intense sound pulses. SOR recommends checking local safety

standards for applicable hearing protection regulation.

Do not aim the transducer of an operating U11 at anyone’s head. Permanent hearing

damage may result. Use proper hearing protection when using in an enclosed space.

Electrostatic Discharge (ESD) Handling Procedure

Our electronic instruments are designed to the highest quality standards. These products

use highly sensitive electronic components that are affected by static electricity, which is

present in most work environments. The following procedure is recommended to reduce

the possibility of component failure caused by static electricity damage.

Use a grounded wrist strap when installing or removing electronic boards. A grounded

workstation is recommended.

Ensure that all electrical connections are made and none are partial or floating. Ground

all equipment properly.

Quick Start Installation Guide



Install the transducer away from obstructions. It should not be mounted in the center of

domed or conical roof tanks. See page 4 for minimum mounting distance from tank walls.

1/3 Vessel Radius 1/3 Vessel Radius

Inlet Pipe

Form 1186 (05.13) ©SOR Inc.

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23 - 30 VDC

Power Supply

250Ω to 750Ω

Loop

Resistor

Blanking

(No detection)

4 or 20mA

(High Level)

Distance

(In Echo EL feature)

4 or 20mA

(Low Level)

Emptdst

(Farthest valid echo)

Low Level

High Level

100%



Wire the unit according to local and national safety codes. Power and

signal wiring must be run as a minimum. Refer to page 6 for

more wiring details.

NOTE: All values measured

and entered as a distance

from the top down.



Determine the values to be entered when programming the unit.

Calculate all high and low levels as the distance from the transducer

down to the target point.



Program the basic parameters in the Setup menu. Press CAL to access the Setup Menu.

See page 8 for details of the LCD display menu items and customer values.

NOTE: To change number values fast, hold down the arrow key.

Return to normal operation

Enter menus, change menu

selection, accept changes

Change numeric values and move between menu options

{

Distance

12.34 ft.

DistanceDistance

12.34 .12.34 .

cal run

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Typical Mounting Guidelines

The transducer may be mounted using either a flange or the standard 3” NPT fitting.

Whether the unit is mounted on a flange or by threads, and whether it has a focusing cone

option or not, the end of the transducer assembly should always be mounted past the end

of the process connection assembly. The figures below illustrate proper mounting.

Minimum Mounting Distance

The transducer should be mounted so that the primary cone of

sound does not intersect the wall of the vessel. For best perfor-

mance the transducer should be mounted outside the “Minimum

Mounting Distance” shown below. When this is not possible,

consult the factory for recommendations. If the distance to the

sidewall is less than the “Minimum Mounting Distance” then

the unit may not be able to track the process properly.

Nozzle Mount Stand Pipe Mount

2” (50 mm)

Flush Mount Threaded Mount

Mounting the Transducer

Inlet Pipe

Enclosed Vessels

Tank geometry must be considered when mounting the transducer.

Certain types of vessels may create secondary echoes if the

transducer is not mounted correctly. The problem is primarily

with spherical vessels. This shape can refocus spent echoes

and cause false readings. Mounting the transducer in a

location that minimizes this effect can eliminate the problem.

Mount transducer away from

inlets and obstructions

Transducer mounting is critical. The transducer assembly both generates the sound pulse

and monitors the echoes. The ultrasonic pulses travel away from the face of the transducer

in a cone-shaped pattern. This area should be

free of obstructions and away from inlets.

The assembly should be in a position that

allows unobstructed access between

the transducer face and the process

to be measured.

Minimum

Mounting

Distance

1/3 Vessel1/3 Vessel

RadiusRadius

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For vessels taller than 40 feet (12m), use:

Minimum Distance = Vessel Height X 0.087

Minimum Mounting Distance

3 feet

(0.9 m)

4 feet

(1.2 m)

2 feet

(0.6 m)

1 feet

(0.3 m)

10 feet

(3 m)

20 feet

(6 m)

40 feet

(12 m)

30 feet

(9 m)

Minimum Mounting Distance

Vessel Height

Installation on Solids

The U11 is able to reliably read solids from any angle of repose and through dusty condi-

tions. The transducer should be mounted in a vertical position according to the guidelines

below. SOR does not recommend aiming the transducer unless absolutely required for the

process, or special measurement is required as seen below.

In solids applications the transducer is typically mounted 1/3 of the distance from the wall

of the vessel to its center. As solids pile up they form a cone. Mounting the transducer in

the position shown below gives a rough average of what the level would be if the surface

were flattened out. This is true for both conical piles and pits (created when material is

drawn from the bottom).

1 2

3 3

Inlet Pipe

Mount the transducer 1/3 of the vessel

radius in from the wall. Mount away from

inlet pipes, ladders, or other intrusions

that may create false echoes.

Transducer should be mounted vertical

pointing down towards the process.

The transducer needs to be aimed at the outfeed if level measurement

is required to the bottom of the vessel. The user must be aware that the

measured distance will be longer than the actual distance to the process

level due to the angle of aiming.

This mounting only holds true for round, cylindrical vessels

with a center inlet. In other shape vessels or where the inlet

is offset the transducer should be mounted according to the

user’s requirements.

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Form 1186 (05.13) ©SOR Inc.

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Wiring Instructions

The U11 transmitter is powered by a 24VDC loop circuit. The most common method of

powering the unit is from a self-powered DCS/PLC card.

The U11 is an electrically powered transmitter. Common electrical safety

procedures must be followed when working with this equipment. All wiring

should be per local and national standards. Do not open the cover on an

energized unit in an explosive atmosphere. Do not handle circuit boards

when energized.

23 - 30 VDC

Loop Powered

Supply

250 to 750Ω

Resistor

Socket for

power cable to

display board

Wire

release

levers



Remove the display board by removing the three screws around its outer perimeter.

DO NOT remove the four screws at the corners of the LCD display. Move the display

out of the way.



String the wires through the electrical connections and seal connections properly.



Attach wires by pressing down on the small plastic lever while pushing the bare wire

end into the terminal socket.

Wiring Diagram

The terminal block positions are labeled per the diagram below. Polarity must be observed

when wiring the U11.

Form 1186 (05.13) ©SOR Inc.

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Keypad Interface

The U11 does not require calibration, but is does require customer setup for each

installation. The units, display type, high and low levels must be set as a minimum. Other

parameters may be required or desired for your specific application. See Menu Structure

on pages 12 & 13 for detailed descriptions of parameter setup.

All setup is done through the four-button display panel. The diagram below shows the

buttons and describes their function. The display panel also includes an indicator light for

the sensing pulse to verify operation of the unit.

NOTE: When changing numerical values, hold down the arrow button to make the value

change faster. The longer the button is held, the faster the value will change. Release the

arrow button and press again to return to normal rate of change.

Factory

test port

RUN button

used to exit

menus and

return to

normal

operation

CAL button

used to enter menus

and select/save menu choices

UP and DOWN

arrow buttons

used to move

between menu options

and change values

Pulse indicator light LCD Display

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Form 1186 (05.13) ©SOR Inc.

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LevelLevel

26.83f26.83f

LevelLevel

28,70f28,70f

EngUnitsEngUnits

FeetFeet

Gn 9%Gn 9%

26.8026.80

LCD Display

Normal Operation

In normal operation the top line of the LCD shows the Material Display Mode selected in

the menu setup - Space or Material %. The second line displays the actual level status. The

unit can always be returned to normal operation by pressing the RUN button.

Normal Operation screen - display type on top line,

level reading on bottom line.

When the decimal changes to a comma,

the U11 has lost echo and is trying to recover it.

Programming Mode

In programming mode the top line of the display indicates what feature is being pro-

grammed. The bottom line shows the current choice for that feature. Move from feature to

feature using the arrow keys and press CAL to select and change that feature.

Programming feature shown on top line, user choices/values

shown on bottom line.

Troubleshooting Mode

When the unit is in normal operation, troubleshooting information is displayed by pressing

the up arrow key. The top line of the LCD changes to the troubleshooting information, the

lower line continues to display the level reading.

Troubleshooting data displayed on top line, level reading on

bottom line.

Every U11 comes with 2-line 16-character LCD display. This serves as a display of process

level and an interface for setting up the unit. There are three LCD display modes: normal

operation, troubleshooting and programming.

INDICATOR MEANING

. (Decimal) Normal operation

, (Comma) Recover mode – echo lost

: (Colon) Hold Mode – false echo found

outside of window

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“CAL” Button

The CAL button is used to enter the menus and select menu options to

change. Press CAL from normal operation to enter the password screen.

Enter the password using the arrow keys (factory default is 0) and press CAL

to go to the menus. When the proper menu item is selected using the arrow

buttons, press CAL again to access that feature and make changes.

Field Programming

The U11 menus are accessible through the four-button keypad on the display board.

Information is displayed on the 2-line LCD, with the program feature shown on the top line

and the current setting displayed on the bottom line. All button functions are consistent for

all models and menus.

Units in Hazardous Locations – Prior to programming, make sure that the

work area is declassied before removing the explosion proof cover to

program the unit. Failure to do so could result in severe personal injury or

substantial property damage.

The and arrow buttons are used to change user values

and move between menu items. When changing numeric values,

hold the arrow button down and the values will change faster

the longer it is held. When the button is released and pressed

again the numbers will change at a slower rate.

cal

run

“RUN” Button

The RUN button returns the unit to normal operation mode. This button will

exit the menus at any point, saving the current selected options and entering

normal operation using all changes made in the menus.

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User Dened Values

Several user-defined values must be entered for each application. The figure on page 11

illustrates these values and how they should be determined. It is important to remember

that all distance values are measured from the sensor down.

Blanking Every ultrasonic transmitter has a dead zone near the transducer where it cannot

measure level. In the U11 this is called the Blanking. The blanking is normally automatic

but may be set to a specific value if required for the application. If the user defined blanking

is shorter than the distance required by the automatic blanking, the U11 defaults to the

automatic value.

4 or 20mA Endpoints The range of the U11 is determined by setting the distance from the

transducer to the 4 and 20mA endpoints. An output of 20-4mA can be obtained by setting

the 4mA point at the top and the 20mA point at the bottom. These values are entered in

engineering units (feet or meters).

Distance The Echo Elimination* feature requires a Distance value to be entered. This is

the maximum distance to eliminate false echoes. When used, this value should be set

slightly higher than the low level of the process so that it does not eliminate the bottom

of the range. *USE THIS FEATURE ONLY WHEN REQUIRED!

Empty Distance (EmpyDst) The empty distance defines the farthest echo the U11 will

accept. This eliminates the possibility of reading a secondary echo that appears to be below

the bottom of the vessel. The Emptdst value should be set slightly farther than the end of

the measured range so it will not blank out the bottom of the process.

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