Dinel ULM-70 Series User manual

Read carefully the instructions published in this manual before the rst use of the level meter. Keep the manual

at a safe place. The manufacturer reserves the right to implement changes without prior notice.

INSTRUCTION MANUAL

průmyslová elektronika

Ultrasonic level meters Ulm – 70

Firmware: v.2.0

Table of conTenTs

1 . Measuring principle .................................................................................................................3

2 . Range of applications..............................................................................................................3

3 . Features of variants .................................................................................................................3

4 . Dimensional drawings .............................................................................................................4

5 . Installation instructions ..........................................................................................................5

6 . Electrical connection ...............................................................................................................8

7 . Set-up elements .......................................................................................................................9

8 . Status signalization .................................................................................................................9

9 . Operation and setting ..............................................................................................................10

 9 .1 . Basicconguration ............................................................................................................10

 9 .2 . Advancedsettings .............................................................................................................12

 9 .3 . Additionalfunctions ...........................................................................................................15

10. HART® communication protocol ...........................................................................................18

11 . Order code ..............................................................................................................................18

12 . Accessories ............................................................................................................................18

13 . Safety, protection, compatibility and explosion proof .......................................................19

14 . Use, manipulation and maintenance....................................................................................19

15 . Marking of labels....................................................................................................................20

16 . Menu structure .......................................................................................................................22

17 . Specications.........................................................................................................................23

ULM–70 © Dinel, s.r.o.

1 . Measuring principle

UltrasoniclevelmeterULM®isacompactmeasuringdeviceconsistingoftwoparts-mainlevelme-

ter(thebodywithmeasuringelectronics)anddisplaymodule.Usingtheelectroacousticconverter,

thelevelmeterstransmitthesequenceofultrasonicpulsesthatspreadtowardsthesurfacelevel.

Theconverterrecuperatesreectedacousticwavesthataresubsequentlyprocessedintheelec-

tronicmodule.Theintelligentevaluationblockltersoutinterferingsignals,comparesthecleaned

receivedsignalwiththefalsereectionmap(e.g.frommixers,ladders,reinforcementetc.)and

selectsasuitablereection(echo).Basedontheperiodduringwhichtheindividualpulsesspread

towardsthesurfacelevelandbackandbasedonthemeasuredtemperatureinthetank,theinstant

distancetothesurfaceleveliscalculated.Accordingtothelevelheight,thelevelmeteroutputisset

andthemeasuredvalueisdisplayedonthedisplay.

2 . range of applicaTions

Forcontinuousnon-contactlevelmeasurementofliquids(watersolutions,seweragewater,etc.),

mashandpastematerials(sediments,sticks,resinsetc.)inclosedoropenvessels,sumps,reser-

voirsandopenchannels.Incasethelevelofbulk-solidmaterialsismeasured,themeasurement

rangeisreduced.Thelevelmeterscancontinuouslymeasurelevelsofbulk-solidmaterialswith

alowconcentrationofdustparticles.Consultthemanufactureronrecommendeduseofthelevel

meterforbulk-solidmaterials.

3 . feaTures of varianTs

All operations described in this instruction manual have to be carried out only by trained

personnel or an accredited person. Warranty and post warranty service must be exclusively

carried out by the manufacturer.

Improper use, installation or set-up of the level meter can result in crashes in the application

(overlling of the tank or damage of system components).

The manufacturer is not responsible for improper use, losses of work caused by either direct or

indirect damage, and for expenses incurred during installation or use of the level meter.

safeTy

ULM –70_ –02 Measuring range from 0.15m to 2m, plasticPVDFtransmitter,mechanical

connectionwiththreadG1".

ULM –70_–06 Measuring range from 0.25m to 6m, plasticPVDFtransmitter,mechanical

connectionwiththreadG1½".

ULM –70_–10 Measuring range from 0.4m to 10m, plasticPVDFtransmitter,mechanical

connectionwithHDPEpolyethyleneange(version"N")oraluminiumalloy

ange(version"Xi").

ULM–70_–20 Measuring range from 0.5m to 20m, plasticPVDFtransmitter,mechanical

connectionwithaluminiumalloyange.

4 . DiMensional Drawings

ULM–70_–02 ULM–70_–06

ULM–70N–10

ULM–70_–20

ULM–70Xi–10

Al alloy, DN65

Al alloy

HDPE, DN65

Pg11 cable gland

Ground terminal

ULM–70 © Dinel, s.r.o.

Fig. 2: Level meter dead zone

m – Dead zone

(blind zone, blocking distance)

5 . InstallatIon InstructIons

• Install the levelmeter in thevertical positionintotheupperlidofthetankorreservoirusing

aweldingange,afasteningnutoraangesothatthelevelmeteraxiscanbeperpendiculartothe

surfacelevelofthemeasuredliquid(Fig.1).

• Themin.dimensional parameterstoinstallthelevel

meterintoalidoraceilingofatankaregiveninFig.3.

• Wheninstallinginanopen channel(reservoir,drain

etc.),installthelevelmeterontoabracketascloseas

possibletotheexpectedmax.level.

• Inconnectionwiththemeasurementprinciple,nosig-

nalsreectedintheareaimmediatelyunderthelevel

metercanbeevaluated.The zone(Fig.2)determines

the min. distance possible between the level meter

andthehighestsurfacelevel.Themin.distancesto

themediumaregiveninthechapter"Specications".

• Itis necessary to installthe level meter sothat the

binlevelcannotinterferewiththe deadzonewhen

lled up to the maximum. If the measured level in-

terfereswiththedeadzone,thelevelmeterwill not

workproperly.

Fig. 1: Recommended installation in

the tank

Fig. 3: Installation distance from the tank wall

• If the maximum surface levelin thetank interferes with the dead zone, thelevel meter has

tobemountedintoahigherinstallation neck.Inthisway,thetankcanbellednearlyupto

themaximumvolume.Theinnernecksurfacehastobeevenandsmooth(withoutedgesand

weldedjoints);theinneredgeshouldberoundedwheretheultrasonicwaveleavesthepipe.The

neckdiametershouldbeaslargeaspossiblebuttheneckheightshouldbeaslowaspossible.

RecommendeddimensionsoftheinputneckaregiveninFig.4.

ULM–70–02 ; 10 d > 1/12 c

(min. 200 mm)

ULM–70–06 d > 1/8 c

(min. 200 mm)

ULM–70–20 d > 1/10 c

(min. 200 mm)

Fig. 4: Possible installation of the installation neck

a – Neck height

b – Neck width

m – Dead zone (blind zone, blocking dist.)

ULM–70–02 ; 06 a < 3 b

b > 100 mm

ULM–70–10 a < 1,5 b

b > 100 mm

ULM–70–20 a < 1,5 b

b > 150 mm

d – Distance from

the tank wall

c – Measurement

range of the level

meter

• During lling, mixing and other processes, foam

canariseonthesurfacelevelofthemeasuredliq-

uid.Thethickfoamconsiderablyabsorbstheultra-

sonicsignalwhichmightcausemalfunctionofthe

levelmeter(Fig.5).Forsuchcases,itisnecessary

tosetup"SENSITIVITY"modeto"high"orcontact

themanufacturerifneed.

• Iftheemittedacousticsignalofthelevelmeteris

affected by near objects (roughness on walls of

thetank,variouspartitions,mixersetc.),itisnec-

essary to map false reections by activating the

mode "TEACHING". In case of installed mixers,

itisnecessarytoputthemixerstopositionunder

thelevelmeter(directthemixerpaddletotheultra-

sonicsignalbeam).

Fig. 6: False echo from obstacles in the tank

Fig. 5: Thick foam on the surface

• Donotinstallthelevelmeterinorabovethellingpoint(Fig.8).

• Incasethelevelofbulk-solidmaterialsismeasured,themeasurementrangeisreduced.We

recommendtoconsulttheusewiththemanufacturer.

Fig. 7: False echo from the mixer paddle

Fig. 8: Level meter installation outside the inuence of lling

ULM–70 © Dinel, s.r.o.

Fig. 13: Intensely stirred surface

Fig. 10: Prevention to avoid intrusion of

humidity

Fig. 9: Solar radiation shielding cover

• The level meter must not be installed in places

withdirectsolar radiationandmustbeprotected

againstweathereffects.

• Iftheinstallationinplaceswithdirectsolarradia-

tionisinevitable,itisnecessarytomountashield-

ing coverabovethelevelmeter.

• Itissuitabletorunthecableunderacablebush-

ing(obliquelydowninslack)accordingtoFig.10

topreventpenetration of humidity.Thentherain

andcondensingwatercanowofffreely.

• Thecablebushingandconnectorhavetobesuf-

ciently tightenedtopreventpenetrationofhu-

midity.

• To lower the minimum distance to the measured

medium, a reection boardmadefromsolid,

evenandsmoothmaterialcanbeinstalledtothe

levelmeter.Thenthetankcanbellednearlyup

tothemaximumheight.Thesolutionissuitablefor

opentanksandreservoirs.

• Scatteringorattenuationoftheultrasonicsignal

canresultif thesurfacelevelhas been moder-

ately stirredorrippled(byamixer,comingliq-

uid etc.). It can result in reduction of the meas-

urementrangeorunreliablefunctionofthelevel

meter(Fig.12).

• Rotatingmixer bladescancausethatthesurface

is stirred, whichresults infalsereections of the

ultrasonicsignalfromthesurfacelevelandunreli-

ableoperationofthelevelmeter(Fig.13).

Fig. 12: Moderately stirred surface

Fig. 11: Reection board

H + L = Dead zone

(blind zone, blocking dist.)

Electrical connection must be done in de-energized state!

With regard to possible occurrence of electrostatic charge on non-conductive parts of

the level meter for explosive areas (ULM–70Xi–_ _–I), level meters must be grounded with

ground terminal! It will be done using a screw placed on the head of the level meter under

the cable bushing.

The voltage source should be preferably realized as a stabilized power supply unit with safe voltage from

18 to 36 V DC (18 ÷ 30 V DC for Xi version), which can be a part of the evaluation or display device.

In case of strong electromagnetic interferences (EMI), parallel cable ducting with power lines, or when

cable length exceeds 30 m we recommended to use shielded cable.

6 . elecTrical connecTion

The ultrasonic level meter is designed to be connected to supply unit or to controller through

acablewiththeouterdiameterof6÷8mm (recommendedcross-sectionofcores0.5 ÷0.75

mm2)bymeansofboltedclipsplacedunderdisplaymodule.Connectthepluspole(+U)tothe

terminal(+),theminuspoleto0Vtotheterminal

(-)andtheshieldingtotheterminal( )(onlyfor

shieldedcables).

Procedure to connect the cable to the level

meter:

1. Unscrewthenutoftheuppertransparentlid.

2. Take the upper edge of the display module

andtakeitoutcarefullybymildswingingup.

3. Ifyoucannotgraspthemodule,youcanuse

a small screwdriver. Insert it as far as the

seamandusefromseveralsidestoslightly

liftthemodule.

4. Release the cable bushing and thread the

strippedsupplycablein.

5. Connect the cable into the bolted clips ac-

cordingtothediagraminFig.14.

6. Assemblethelevelmeterandconnectthe

cabletothesequentialunit.

Fig. 14: Connection diagram of the level meter

Fig. 15: Internal view of terminal block

Display unit connector

Terminal block

Metal clip

ULM–70 © Dinel, s.r.o.

8 . sTaTus signalizaTion

1) symbol appears in the lower left corner of the display

display function

"NO ECHO" Lighting intermittently – the level meter is not able to receive echo for a long

time. Incorrect installation of the level meter

"DEAD ZONE" Lighting intermittently – the measured level is in the "dead zone" of the level

meter or the ultrasonic converter is dirty.

"NO PASSWORD" It will appear in the item "MENU" – the level meter is protected using a pass-

word against unauthorised setting. Enter the correct password (see p. 17).

Symbol "T" 1) Lighting permanently – "TEACHING" mode activation.

Symbol "E" 1) Lighting intermittently – correct echo receiving (of the reected signal) from

the measured surface level.

Symbol "L" 1) Lighting permanently – level meter is locked against unauthorized settings by

a password. You must enter the correct password to unlock it (see page 16).

Level meter locked

Ultrasonic transmitter

Upper lid nut

Cable gland

Control buttons

OLED display Label

Fig. 16: Full view of ultrasonic level meter

7 . seT-up eleMenTs

Button

• Set-upmodeaccess

• Conrmationofselectediteminthemenu

• Movethecursorintheline

• Savingofset-updata

Button

• Moveinthemenu

• Changeofvalues

Button

• Cancellingofcarriedoutchanges

• Shiftonelevelup

Echo receiving

Units

Teaching

mode activation

Display

of measured values

Set-up elements

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