Microlectra Dinel ULM-70 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
www.microlectra.nl
Microlectra bv.
Microlectra bv.
Augustapolder 12. 2992 SR Barendrecht. The Netherlands.
www.microlectra.nl [email protected]
Table of conTenTs
1 . Measuring principle .................................................................................................................3
2 . Range of applications..............................................................................................................3
3 . Variants of sensors..................................................................................................................3
4 . Dimensional drawings .............................................................................................................4
5 . Installation and putting into operation ..................................................................................4
6. Installation instructions ..........................................................................................................5
7. Electrical connection ...............................................................................................................9
8. Examples of ULM-70 connection ............................................................................................10
8.1 . Wiring diagram of the level meter with current output and PDU unit .................................10
8.2 . WiringdiagramofthelevelmeterwithcurrentoutputandPDUunit..............................
in versions for explosive areas ..........................................................................................11
8 .3 . WiringdiagramofthelevelmeterwithcurrentoutputandMGUunit................................13
8 .4 . WiringdiagramofthelevelmeterwithModbus/RS485andMGUunit ...........................13
8 .5 . WiringdiagramofthelevelmeterwithModbus/RS485andPDUunit ............................13
9 . Set-up elements .......................................................................................................................14
10. Status signalization................................................................................................................14
11 . Operation and setting ............................................................................................................15
10.1 . Basicconguration ..........................................................................................................15
10.2 . Servicesettings ...............................................................................................................18
10 .3 . Additionalfunctions .........................................................................................................20
12. HART® communication protocol ...........................................................................................22
13. Modbus® communication protocol........................................................................................23
14 . Order code ..............................................................................................................................23
15 . Accessories ............................................................................................................................23
16 . Safety, protection, compatibility and explosion proof .......................................................24
17 . Use, manipulation and maintenance....................................................................................24
18 . Marking of labels....................................................................................................................25
19 . Menu structure .......................................................................................................................27
20 . Specications.........................................................................................................................28
21 . Packing, shipping and storage .............................................................................................30
ULM–70 © Dinel
3
1 . Measuring principle
UltrasoniclevelmeterULM®is a compact measuring device consisting of two parts - main level me-
ter(thebodywithmeasuringelectronics)anddisplaymodule.Usingtheelectroacousticconverter,
the level meters transmit the sequence of ultrasonic pulses that spread towards the surface level.
Theconverterrecuperatesreectedacousticwavesthataresubsequentlyprocessedintheelec-
tronicmodule.Theintelligentevaluationblockltersoutinterferingsignals,comparesthecleaned
receivedsignalwiththefalsereectionmap(e.g. from mixers, ladders, reinforcement etc.) and
selectsasuitablereection(echo).Basedontheperiodduringwhichtheindividualpulsesspread
towardsthesurfacelevelandbackandbasedonthemeasuredtemperatureinthetank,theinstant
distancetothesurfaceleveliscalculated.Accordingtothelevelheight,thelevelmeteroutputisset
andthemeasuredvalueisdisplayedonthedisplay.
2 . range of applicaTions
Forcontinuousnon-contactlevelmeasurementofliquids(watersolutions,seweragewater,etc.),
mashandpastematerials(sediments,sticks,resinsetc.)inclosedoropenvessels,sumps,reser-
voirsandopenchannels.Incasethelevelofbulk-solidmaterialsismeasured,themeasurement
rangeisreduced.Thelevelmeterscancontinuouslymeasurelevelsofbulk-solidmaterialswith
a low concentration of dust particles. Consult the manufacturer on recommended use of the level
meterforbulk-solidmaterials.
3 . VarianTs of sensors
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
(overlling 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, plasticPVDFtransmitter,mechanical
connectionwiththreadG1".
ULM –70_–06 Measuring range from 0.25m to 6m, plasticPVDFtransmitter,mechanical
connectionwiththreadG1½".
ULM –70_–10 Measuring range from 0.4m to 10m, plasticPVDFtransmitter,mechanical
connection with thread G2¼".
ULM–70_–20 Measuring range from 0.5m to 20m, plasticPVDFtransmitter,mechanical
connectionwithaluminiumalloyange.
4
© Dinel ULM–70
4 . DiMensional Drawings
ULM–70_–02
Pg11 cable gland
Ground terminal
variant ULM-70 with protective
conductor
ULM–70_–06
ULM–70_–20
ULM–70_–10
This procedure includes the following three steps.
•insTallaTion
•elecTric connecTion
•seTTing
5 . insTallaTion anD puTTing inTo operaTion
ULM–70 © Dinel
5
Fig. 2: Level meter dead zone
m – Dead zone
(blind zone, blocking distance)
6 . InstallatIon InstructIons
•Install the level meter in the vertical positionintotheupperlidofthetankorreservoirusingaweld-
ingange,afasteningnutoraangesothatthelevel
meteraxiscanbeperpendiculartothesurfacelevelof
themeasuredliquid(Fig.1).
• Themin.dimensional parameters to install the level
meterintoalidoraceilingofatankaregiveninFig.3.
•When installing in an open channel(reservoir,drain
etc.),installthelevelmeterontoabracketascloseas
possibletotheexpectedmax.level.
•Inconnectionwiththemeasurementprinciple,nosig-
nals reectedintheareaimmediatelyunderthelevel
metercanbeevaluated.The zone(Fig.2)determines
the min. distance possible between the level meter
and the highest surface level. The min. distances to
themediumaregiveninthechapter"Specications".
• It is necessary to install the level meter so that the
bin level cannot interfere with the dead zone when
lleduptothemaximum.Ifthemeasuredlevelinter-
fereswiththedeadzone,thelevelmeterwillnot
work
properly.
Fig. 1: Recommended installation in
the tank
Fig. 3: Installation distance from the tank wall
• If themaximum surfacelevel inthe tank interfereswiththe dead zone, thelevel meter has
tobemountedintoahigherinstallation neck.Inthisway,thetankcanbellednearlyupto
themaximumvolume.Theinnernecksurfacehastobeevenandsmooth(withoutedgesand
weldedjoints);theinneredgeshouldberoundedwheretheultrasonicwaveleavesthepipe.The
neckdiametershouldbeaslargeaspossiblebuttheneckheightshouldbeaslowaspossible.
RecommendeddimensionsoftheinputneckaregiveninFig.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 – Maximum reach
of the level meter
6
© Dinel ULM–70
•Iftheemittedacousticsignalofthelevelmeterisaffectedbynearobjects(roughnessonwalls
ofthetank,variouspartitions,mixersetc.),itisnecessarytomapfalsereectionsbyactivating
themode"TEACHING".Incaseofinstalledmixers,itisnecessarytoputthemixerstoposition
underthelevelmeter(directthemixerpaddletotheultrasonicsignalbeam)(Fig.5and6).
• Donotinstallthelevelmeterinorabovethellingpoint(Fig.7).
Fig. 5: False echo from obstacles in the tank Fig. 6: False echo from the mixer paddle
Fig. 7: Level meter installation outside the inuence of lling
•Incasethelevelofbulksolidsismeasured,the
measurementrangeisreducedDuetoabsorp-
tionofacousticwavesbyabulkmedium,short-
eningofthemeasuringrangeoccursbyupto
50% depending on the grain size. We therefore
recommend selecting a level meter with greater
range than the maximum range of measuring
the medium. It is also appropriate to use a di-
rectionalhorn(seeimage8),whichreducesthe
shorteningofthemeasuringrange,becauseit
betterconcentratesacousticenergywhilepre-
serving the same beam angle, and improves
the sensitivity when receiving the reected
echo. We recommend to consult the use with
the manufacturer.
Fig. 8: Level meter installation in silo or hopper
horn
adapter
ULM–70 © Dinel
7
!
!
• Scattering or attenuation of the
ultrasonic signal can result if the
surfacelevelhasbeenmoderate-
ly stirred or rippled(byamixer,
coming liquid etc.). It can result
in reduction of the measurement
rangeorunreliablefunctionofthe
levelmeter(Fig.10).
•Rotatingmixer blades can cause
thatthesurfaceisstirred,whichre-
sultsinfalsereectionsoftheultra-
sonic signal from the surface level
and unreliable operation of the
levelmeter(Fig.13).(obr.11).For a
rippled or swirling level, you can
use the directional horn to elimi-
nate scattering of the ultrasonic
signal.
• During lling, mixing and other processes, foam
can arise on the surface level of the measured liq-
uid. The foam considerably absorbs the ultrasonic sig-
nal which might cause malfunction of the level meter
(Fig. 9).For suchcases, itisnecessary tosetup"SENSI-
TIVITY"modeto"high"orcontactthemanufacturerifneed.
Incaseofathinlayeroffoam,itisalsopossibletousethe
directionalhornforimprovingreceiptofthereectedecho.
Fig. 9: Foam on the surface
Fig. 10: Moderately stirred
surface
Fig. 11: Intensely stirred surface
•If the level sensor is mounted to
bottlenecks and places with ba-
rriers,ornearunevenwallsorthe
lling area, where the transmissi-
on signal could be distorted, we
recommend using a guide tube
(acoustic horn).The tubemust be
made from a single material with a
smooth inner surface (see image
12a,12b).Theminimumtubedia-
metermusthavethedimension"b"
according to image 4 on page 5.
After installing, you must perform
theprocedure"LEARNING".We
recommend consulting with the
manufacture on the construction of
theguidetube.
Obr. 12a: Short guide tube
installation
ventilation
holes
sleeves for
mounting
Obr. 12b: Total guide tube
installation
8
© Dinel ULM–70
• Thelevelmetermustnotbeinstalledinplaceswithdirectso-
lar radiationandmustbeprotectedagainstweathereffects.
•If the installation in places with direct solar radiation is inevi-
table,itisnecessarytomountashielding coverabovethe
levelmeter(Fig.13).
•Itissuitabletorunthecableunderacablebushing(obliquely
downinslack)according toFig.14toprevent penetration
of humidity.Then therainandcondensingwatercanow
offfreely.
• The cable bushing and connector have to be sufciently
tightenedtopreventpenetrationofhumidity.
• To lower the minimum distance to the measured medium,
a reection boardmadefromsolid,evenandsmoothmate-
rialcanbeinstalledtothelevelmeter.Thenthetankcanbe
llednearlyuptothemaximumheight.Thesolutionissuit-
ableforopentanksandreservoirs(Fig.15).
H + L = mrtvá zóna
Fig. 13: Solar radiation shielding
cover
Fig. 14: Prevention to avoid
intrusion of humidity Fig. 15: Reection board
ULM–70 © Dinel
9
7 . elecTrical connecTion
Thelevelmeterisconnectedtoconsequential(evaluating)devicewithasuitablecablewiththe
outerdiameterof6to8mmusingscrewterminalslocatedunderthedisplaymodule.Therecom-
mendedcrosssectionofcoresforthecurrentversion2x0,5÷0,75mm2and for the version with
Modbuscommunication2x2x0,25mm2 (twistedpair,
shielded).Pluspole(+U)isconnectedtotheterminal
(+),minuspole(0V)totheterminal(-)andtheshielding
(onlyforshieldedcables)totheterminal( ).Commu-
nicationwiresAandBofthelineRS-485(forversion
"M"-Modbus)areconnectedtotheterminalsAandB.
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
takeitoutcarefullybymildswingingup.
3. If you cannot grasp the module, you can use
a small screwdriver. Insert it as far as the seam and
usefromseveralsidestoslightlyliftthemodule.
4. Release the cable outlet and thread the stripped
supplycablein.
5. Connectthecabletothescrewterminalsaccord-
ingtothediagraminFig.17or18.Firmlytighten
theterminalsandthecableoutlet.
6. If the level meter with Modbus is involved as a
terminalforRS-485,werecommend(toavoidre-
ectionsontheline)toconnect120Ωtermination
resistor. This is done by moving a small lever of
theswitchmarked120ΩtotheONposition.Onthe
levelmetersconnected to thelineRS-485as an
intermediatedevice,theterminationresistorsare
notconnected(switchremainsoff).
7. Insert the display module back into the head so
thattheconnectorisproperlyconnected.
8. Slidesiliconesealonthethreadofthelevelmeter
body,thentightenthenutoftheupperlid.Connect
thecabletoconsequentialdevice.
display unit connector
Terminal block
metal clip
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, all level meters for explosive spaces (ULM–70Xi type) must be grounded. It
will be done using a screw placed on the head of the level meter under the cable outlet.
Fig. 17: Inside view of screw terminals of the level
meter with current output ULM-70_-_-_-I
Fig. 16: Wiring diagram of the level meter
with current output ULM-70 _-_-_- I
+ABIS
GND
ON
120
display unit connector
Terminal block
metal clip
120Ω switch
Fig. 18: Wiring diagram of the level
meter with Modbus ULM-70_-_-_-M
Fig. 19: Inside view of screw terminals of the level
meter with Modbus ULM-70_-_-_-M
10
© Dinel ULM–70
The supply 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.
It is also necessary to design and take measures to reduce the effects of static electricity
to a safe level in the wiring.
Installation in explosive atmospheres needs to be carried out in compliance with CSN EN
60079-14 (Electrical installations for explosive gaseous atmospheres – Part 14: Electrical
installations in dangerous areas other than mining) and possibly also in compliance with
other standards relating to the area concerned.
8 . exaMples of ulM-70 connecTion
PDU-420-W
(input 4 ... 20 mA )
(0V) -
ULM-70N-_ _-_-I
User manual - METER PDU-4xx-P
Figure 4.7. Terminals description (relay outputs, device with current output)
Figure 4.8. Terminals description (OC-type outputs)
Figure 4.9. Connection of 2-wire current converters
11
1 2 5 6 7 8 9
GND DATA+
DATA-
RS - 485
+Uo -
+24V +5%, -10%
Imax = 100mA
10 11 12 13 14 15
R1
3 4
optional ACTIVE
current output
-+
R2
n.c. n.c. n.c.
n.c.
GND
0/1 - 5V, 0/2 - 10V
0/4-20mA
++
(optional) (optional)
Power
supply
(depending on version)
16
31
17
32
18
33
19
34
20
35
1 2 5 6 7 8 9
GND DATA+
DATA-
RS - 485
+Uo -
+24V +5%, -10%
Imax = 100mA
10 11 12 13 14 15
3 4
OC1 OC2
- + + -
OC1 ÷ OC4: Umax = 30V DC,
Imax = 30mA, Pmax = 100mW
+ -
- +
OC3
OC4
(optional)
(optional)
n.c.
n.c.
GND
0/1 - 5V, 0/2 - 10V
0/4-20mA
++
(optional)
(optional)
Power
supply
(depending on version)
16
31
17
32
18
33
19
34
20
35
5 6
24V DC
- +
+ -
+
-
+
-
internally connected
16
31
17
32
18
33
19
34
20
35
16
31
17
32
18
33
19
34
20
35
ULM-70N-_ _-_-I
connectedinternally
PDU-4xx-P
(input 4 ... 20 mA )
8 .1 . Wiring diagram of the level meter With current output and pdu unit
(+U) + (+U) + (0V) -
connectedinternally
User manual - METER SRP-N118
a) b)
Figure 4.2. Recommended dimensions of cable stripping
a) for big connectors (1 to 6), b) for small connectors (7 to 13, 15 to 17)
Figure 4.3. Method of connecting cables to the clamping connectors
All connections must be made while power supply is disconnected !
Figure 4.4. Terminals description (relay outputs)
9
!
+Uo -
n.c.
R1 R2
GND
0/1 - 5V
0/2 - 10V
0/4 - 20mA
+
+
GND
GND
DATA+
151617
12 11 10 9 8 713
14 1
2
3
4
5
6
DATA-
RS - 485
(option) (option)
Power supply
(depending
on version)
24V (+5%, -10%)
Imax = 100 mA
PE
n.c.
5 mm
max. 1.6 mm
6 mm
max. 2 mm
Connection of PDU-420-W is valid for rmware version 6.00 or higher. The older versions (up to version
5.99), the level meter output +U is connected to the terminal 7 and the output 0V to the terminal 10.
ULM–70 © Dinel
11
8 .2 . Wiring diagram of the level meter With current output
and pdu unit in versions for explosive areas
(+U) +
(0 V) –
ULM-70Xi-_ _-_-I
IRU-420-I
explosive
area
User manual - METER SRP-N118
a) b)
Figure 4.2. Recommended dimensions of cable stripping
a) for big connectors (1 to 6), b) for small connectors (7 to 13, 15 to 17)
Figure 4.3. Method of connecting cables to the clamping connectors
All connections must be made while power supply is disconnected !
Figure 4.4. Terminals description (relay outputs)
9
!
+ Uo -
n.c.
R1 R2
GND
0/1 - 5V
0/2 - 10V
0/4 - 20mA
+
+
GND
GND
DATA+
151617 12 11 10 9 8 71314 1
2
3
4
5
6
DATA-
RS - 485
(option) (option)
Power supply
(depending
on version)
24V (+5%, -10%)
Imax = 100 mA
PE
n.c.
5 mm
max. 1.6 mm
6 mm
max. 2 mm
PDU-420-W-230V
(input 4 ... 20 mA )
Connection of PDU-420-W is valid for rmware version 6.00 or higher. The older versions (up to
version 5.99), the terminal 9 of the IRU unit is connected to the terminal 10 of the PDU unit and the
terminal 10 of the IRU unit is connected to the terminal 11 of the PDU unit.
non-explosive
area
User manual - METER SRP-N118
a) b)
Figure 4.2. Recommended dimensions of cable stripping
a) for big connectors (1 to 6), b) for small connectors (7 to 13, 15 to 17)
Figure 4.3. Method of connecting cables to the clamping connectors
All connections must be made while power supply is disconnected !
Figure 4.4. Terminals description (relay outputs)
9
!
+Uo -
n.c.
R1 R2
GND
0/1 - 5V
0/2 - 10V
0/4 - 20mA
+
+
GND
GND
DATA+
151617 12 11 10 9 8 71314 1
2
3
4
5
6
DATA-
RS - 485
(option) (option)
Power supply
(depending
on version)
24V (+5%, -10%)
Imax = 100 mA
PE
n.c.
5 mm
max. 1.6 mm
6 mm
max. 2 mm
L
N
230 V AC
12
© Dinel ULM–70
User manual - METER SRP-94
Double numeration means, that depending on device version, particular
terminal can be marked according to the top or bottom number.
Figure 4.6. Terminals description (relay outputs)
Figure 4.7. Terminals description (OC-type outputs)
11
GND DATA +
DATA-
RS - 485
+Uo -
+24V +5%, -10%
Imax = 100mA
1 2 5 6 7 8 9
10 11 12 13 14 15
3 4
31 32 33 34 35
OC1 OC2
- +
OC1 ÷ OC4: Umax = 30V DC,
Imax = 30mA, Pmax = 100mW
OC3
OC4
+ - + -
+ -
(optional) (optional) (optional)
(optional)
Power
supply
(depending on version)
n.c. n.c.
GND
0/1 - 5V, 0/2 - 10V
0/4-20mA
++
Power
supply
(depending on version)
GND DATA+
DATA-
RS - 485
+ Uo -
+24V +5%, -10%
Imax = 100mA
1 2 5 6 7 8 9
10 11 12 13 14 15
3 4
31 32 33 34 35
R1 R2 R3
R4
(optional) (optional) (optional)
(optional)
n.c. n.c.
GND
0/1 - 5V, 0/2 - 10V
0/4-20mA
++
16
31
(+U) +
(0 V) –
ULM-70Xi-_ _-_-I
IRU-420-I
PDU-4xx-P-230V
(input 4 ... 20 mA )
User manual - METER SRP-94
Double numeration means, that depending on device version, particular
terminal can be marked according to the top or bottom number.
Figure 4.6. Terminals description (relay outputs)
Figure 4.7. Terminals description (OC-type outputs)
11
GND DATA +
DATA-
RS - 485
+Uo -
+24V +5%, -10%
Imax = 100mA
1 2 5 6 7 8 9
10 11 12 13 14 15
3 4
31 32 33 34 35
OC1 OC2
- +
OC1 ÷ OC4: Umax = 30V DC,
Imax = 30mA, Pmax = 100mW
OC3
OC4
+ - + -
+ -
(optional) (optional) (optional)
(optional)
Power
supply
(depending on version)
n.c. n.c.
GND
0/1 - 5V, 0/2 - 10V
0/4-20mA
++
Power
supply
(depending on version)
GND DATA+
DATA-
RS - 485
+Uo -
+24V +5%, -10%
Imax = 100mA
1 2 5 6 7 8 9
10 11 12 13 14 15
3 4
31 32 33 34 35
R1 R2 R3
R4
(optional) (optional) (optional)
(optional)
n.c. n.c.
GND
0/1 - 5V, 0/2 - 10V
0/4-20mA
++
16
31
explosive
area
non-explosive
area
User manual - METER PDU-4xx-P
Figure 4.7. Terminals description (relay outputs, device with current output)
Figure 4.8. Terminals description (OC-type outputs)
Figure 4.9. Connection of 2-wire current converters
11
1 2 5 6 7 8 9
GND DATA+
DATA-
RS - 485
+Uo -
+24V +5%, -10%
Imax = 100mA
10 11 12 13 14 15
R1
3 4
optional ACTIVE
current output
-+
R2
n.c. n.c. n.c.
n.c.
GND
0/1 - 5V, 0/2 - 10V
0/4-20mA
++
(optional) (optional)
Power
supply
(depending on version)
16
31
17
32
18
33
19
34
20
35
1 2 5 6 7 8 9
GND DATA+
DATA-
RS - 485
+Uo -
+24V +5%, -10%
Imax = 100mA
10 11 12 13 14 15
3 4
OC1 OC2
- + + -
OC1 ÷ OC4: Umax = 30V DC,
Imax = 30mA, Pmax = 100mW
+ -
- +
OC3
OC4
(optional)
(optional)
n.c.
n.c.
GND
0/1 - 5V, 0/2 - 10V
0/4-20mA
++
(optional)
(optional)
Power
supply
(depending on version)
16
31
17
32
18
33
19
34
20
35
5 6 24V DC
- +
+ -
+
-
+
-
internally connected
16
31
17
32
18
33
19
34
20
35
16
31
17
32
18
33
19
34
20
35
User manual - METER SRP-N118
a) b)
Figure 4.2. Recommended dimensions of cable stripping
a) for big connectors (1 to 6), b) for small connectors (7 to 13, 15 to 17)
Figure 4.3. Method of connecting cables to the clamping connectors
All connections must be made while power supply is disconnected !
Figure 4.4. Terminals description (relay outputs)
9
!
+Uo -
n.c.
R1 R2
GND
0/1 - 5V
0/2 - 10V
0/4 - 20mA
+
+
GND
GND
DATA+
151617 12 11 10 9 8 71314 1
2
3
4
5
6
DATA-
RS - 485
(option) (option)
Power supply
(depending
on version)
24V
(+5%, -10%)
Imax = 100 mA
PE
n.c.
5 mm
max. 1.6 mm
6 mm
max. 2 mm
L
N
230 V AC
ULM–70 © Dinel
13
(+U) +
(0 V) -
ULM-70N-_ _-_-I
MGU-800
(with module IUI4)
8 .3 . Wiring diagram of the level meter With current output and mgu unit
12 13 14 18 19
AB +_
S
RS 485 - Master +24V DC
Imax=120 mA
(A) YE
(B) GN
(0V) WH
(+U) BN
Cab.Sh.
ULM-70N-_ _-_-M
(A) YE
(B) GN
(0V) WH
(+U) BN
Cab.Sh.
MGU-800
(without additional modules)
8 .4 . Wiring diagram of the level meter With modbus / rs485 and mgu unit
8 .5 . Wiring diagram of the level meter With modbus / rs485 and pdu unit
ULM-70N-_ _-_-M
14
© Dinel ULM–70
ESC OK
www.dinel.cz
Ultrasonic Level Meter ULM-70
ESC OK
1745
TEmm
10 . 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. 19).
Symbol "T" 1) Lighting permanently – "TEACHING" mode activation.
Symbol "E" 1) Lighting intermittently – correct echo receiving (of the reected signal) from
the measured surface level.
Symbol
ESC OK
www.dinel.cz
Ultrasonic Level Meter ULM-70
ESC OK
1745
TEmm
1) Lighting permanently – level meter is locked against unauthorized settings by
a password. You must enter the correct password to unlock it (see page 19).
Level meter locked
Ultrasonic transmitter
Upper lid nut
Cable gland
Control buttons
OLED display Label
9 . seT-up eleMenTs
Button
• Set-upmodeaccess
• Conrmationofselectediteminthemenu
• Movethecursorintheline
• Savingofset-updata
Button
• Moveinthemenu
•Change of values
Button
•Cancelling of carried out changes
• Shiftonelevelup
Echo receiving
Units
Teaching
mode activation
Display
of measured values
Set-up elements
Fig. 20: Full view of the level meter
ESC OK
www.dinel.cz
Ultrasonic Level Meter ULM-70
ESC OK
1745
TEmm
ULM–70 © Dinel
15
STARTING
Dinel®
11 . operaTion anD seTTing
Setthelevelmeterusing3buttonsplacedonthedisplaymodule
(seeChapterSet-upelements).After5min.ofinactivity,thelevel
meterautomaticallyreturnsbacktothemeasurementmode.Ifthe
password is active, the level meter will be also locked. The val-
uesthathavenotbeenconrmedusingthebutton willnotbe
saved!Afterthemeter is locked, you cannot change the setting!
Whenyouattempttoedit,thewords"NOPASSWORD"willappear
onthedisplay.Howtounlockthelevelmeterisgivenonpage16.
Afterconnectionofthesupplyvoltagetothelevelmeterthedisplay
showsthelogo"Dinel"andthetext"Starting"(approx.15s).Then,
thelevelmetergoestothemeasuringmodeandthedisplayshows
the current measured value.
MIN LEVEL and MAX LEVEL
Youcanfreelydenetheminimum / maximum distance from the front surface of the level
meter(item"LEVEL"forcurrents4/20mA).The"DISPLAY"isintendedtosetthevaluedisplayed
onthedisplay.Settingtheunitsisdoneinthe"UNITS".
Ifinthebottomofthedisplayappears(whenenteringthevalues)theinscription"OUTOFLIMITS",
thevaluespeciedfortheitem"LEVEL"isoutsidethemeasuringrangeofthelevelmeter.Ifthe
inscription"SPANTOOSMALL"isshown,itmustbespeciedalargerspanbetweenMinandMax
values.Formoreinformation,seechapter"Specications".
Thedecimalpointpositionoftheitem'LEVEL'isrmlyset(accordingtotheselectedunits),inthe
item"DISPLAY"itisfreelyadjustable
11 .1 . basic configuration
Aftertherststartofthelevelmeteritisnecessarytoperformthe
basicconguration(settingofthemeasuringrange,choiceofunits
and possibly damping). The settings are accessible in the basic
menubypressing the"BASICSETTINGS".
UNITS
LEVEL: mm
DISPLAY: %
TEMPERATURE °C
MIN LEVEL
MAX LEVEL
UNITS
DAMPING
SENSITIVITY
TEACHING
MIN ACTUAL LEVEL
02870mm
OUTPUT: 04.00mA
LEVEL: 06000mm
DISPLAY: 00000%
MAX ACTUAL LEVEL
02870mm
OUTPUT: 20.00mA
LEVEL: 00250mm
DISPLAY: 00100%
ACTUAL LEVEL: Actual distance to level
OUTPUT: current 4 mA / 20 mA
LEVEL: Denition of the min / max level
DISPLAY: The value showed on the display
MIN LEVEL
MAX LEVEL
UNITS
DAMPING
SENSITIVITY
TEACHING
BASIC SETTINGS
SERVICE
DIAGNOSTIC
CLONE SETTINGS
PASSWORD
LANGUAGE
INFO
16
© Dinel ULM–70
UNITS
LEVEL: mm
DISPLAY: %
TEMPERATURE °C
DAMPING
05
UNITS
Levelmetercanprocessandconvertalargenumberofdifferentphysical values. The setting is
doneintheitem"UNITS".
LEVEL: Unit selection (mm, cm, m, in, ft)
DISPLAY: The unit showed on the display
(%, mm, cm, m, in, ft, l, hl, m3, gal, bbl, mA)
TEMPERATURE: Temperature unit (°C, °F)
DAMPING
Settingthe response time of the measurements. Thefunctionisusefulforsuppressingleveluc-
tuations,wavesandrapidchangesofthelevel.The reaction time will depend on the exponential
function.Dampingwithadeneddelayinsecondsrepresentsthetimewhenexponentialreaches
2/3ofitsmaximumvalue.
The damping time can be set in the interval
from 0 to 99 s.
1. To enter to the menu press thesamebuttontoselect"BASICSETTINGS".Then,using
and select"UNITS".
2. Nowthemenuitem"UNITS"isshown. Bypressingthe and buttonmakethesettingsof
individual items.
3. Bypressing buttonsavethedata.Bynextpressesofthebutton leave the menu. The
level meter returns to measurement mode.
1. To enter to the menu press thesamebuttontoselect"BASICSETTINGS".Then,using
and select"DAMPING".
2. Nowthemenuitem"DAMPING"isshown. Bypressingthe and buttonmakethesettings
of individual items.
3. Bypressing buttonsavethedata.Bynextpressesofthebutton leave the menu. The
level meter returns to measurement mode.
1. To enter to the menu press thesamebuttontoselect"BASICSETTINGS". Then,using
and select "MINLEVEL"or"MAXLEVEL".
2. Nowitisshowntheitem"MINLEVEL"("MAXLEVEL").Bypressing and set the output cur-
rent"OUTPUT",thedistanceforthedenedcurrent"LEVEL"thevalueonthedisplay "DISPLAY".
3. Bypressing buttonsavethe data.Bynextpressesofthebutton leave the menu. The
level meter returns to measurement mode.
MIN LEVEL
MAX LEVEL
UNITS
DAMPING
SENSITIVITY
TEACHING
MIN LEVEL
MAX LEVEL
UNITS
DAMPING
SENSITIVITY
TEACHING
ULM–70 © Dinel
17
You can set the sensitivity in three degrees:
LOW – MEDIUM – HIGH.
SENSITIVITY
Thesettingisdenedinthreestepsofthelevelmetersensitivity.
"LOW" – Low sensitivity in case of surrounding interferences affecting the measurement.
"MEDIUM" – Medium sensitivity (suitable for most applications).
"HIGH" – Enhanced sensitivity for measured mediums partly absorbing the ultrasonic signal (bulk solids, foams)
If there are no above obstacles in the tank, it is
not necessary to start this mode.
TEACHING
The mode serves for suppressing false reectionsresultingfromreectionoftheultrasonic
signalfromroughnessesonwallsofthetank,variouspartitions,mixersorotherobstacles.The
sensorstartingthismodedetectsfalsereectionsandsavetheminthememory.Thenthesefalse
reectionswillnotaffectthesubsequentmeasurement(theyaremasked).
Before starting the mode it is necessary to empty the tank as much as possible (prefer-
ably completely).
1. To enter to the menu press thesamebuttontoselect"SERVICE".Then,using and
select"TEACHING".
2. Nowitisshowntheitem"TEACHING".Bypressing setthevalue"LEVELDISTANCE"(dis-
tancetothelevel)–supposeddistancefromthefaceofthesensortothemediumlevel.Ifthe
distancetothelevelisnotpreciselyknown,enteravalueratherlower(inthetoleranceeldas
showninFig.19).
3. Afterenteringthe"SETLEVELDISTANCE"bypressing buttonthesystemstarts"teaching"
(falsereectionmapping).Duringthemapping,thedisplayshowsashingsign"RUNNING".
4. Themappingoffalseechoescanbecompletedwhenyouseetheinscription"PressOKtostop"
andyoupress .
5. Theprocedureiscompletelynishedwhenyoucanseetheinscription"DONE".Itisthenpos-
sibletoexitthemenubyrepeatedpressingthebutton .
SENSITIVITY
MEDIUM
TEACHING
SET LEVEL DISTANCE:
06000 mm
START
MIN LEVEL
MAX LEVEL
UNITS
DAMPING
SENSITIVITY
TEACHING
MIN LEVEL
MAX LEVEL
UNITS
DAMPING
SENSITIVITY
TEACHING
TEACHING
SET LEVEL DISTANCE:
06000 mm
RUNNING
TEACHING
SET LEVEL DISTANCE:
06000 mm
DONE
PRESS ESC TO EXIT
The mode "TEACHING" will stop automati-
cally after ca. 1000 measurements.
TEACHING
SET LEVEL DISTANCE:
06000 mm
RUNNING
PRESS OK TO STOP
If during the scanning of the tank in the bottom of the display appears
the dialog "press OK to stop" (see gure) the level meter already found
no further obstacles and "TEACHING" mode may be terminated. If it is
not terminated, the level meter is still ready for the possible presence
of obstacles (e.g. paddles of the agitator). Once it registers a further
obstacle, the dialogue disappears and the obstacle is erased. This
process may be repeated up to 1000 cycles. After this the "TEACHING" mode is automatically stopped.
18
© Dinel ULM–70
Incaseofinstalledmixers,itisnecessary to posi-
tion the mixers under the level meter (direct the
mixerbladetotheultrasonicsignalbeam).
Note:Iftherearesignicantobstaclesintheupper
half of the tank, multiple false reections can
occur especially in closed tanks. In such cases
itisnecessarytoreducethelevelinthetankas
muchsepossibletocorrectlymaskthesepossible
multiplefalsereections.
1/2 of Tank
Obstacles
Tolerance zone for
"LEVEL DISTANCE" value
MEDIUM TEMPERATURE
The level meter is equipped with automatic temperature compensation. If for instance in
the tank there is a difference of 10°C between the temperature of the measured material (me-
dium) and the temperature at the mounting site of the level meter (see the mode "DIAGNOS-
TICS, page 20), the measuring accuracy will be reduced by around 1% of the set range. If
this function is activated, this temperature difference can be compensated. If in the tank (open
channel)isabigdifferencebetweenthetemperatureofthemeasuredmedium(liquid)andtem-
peratureinthe placeofinstallationof theULM(seemode, "DIAGNOSTICS"page20),itis ad-
vised to improve the precision of the measurement by the zone temperature compensation.
Otherwise,thismodeisnot necessary to run.
MEDIUM TEMPERATURE
FAILURE MODE
HART
FACTORY DEFAULT
RESET
MEDIUM TEMPERATURE
YES
+20°C
Inactive compensation (initial state), the
word "NO" appears on the display.
See the "UNITS" menu for temperature unit
selection (°C or °F).
Afterstartofthezone temperature compensationmodeitisnecessarytosetthetemperature
of the surface of the medium. The level meter then calculates the average value from the medium
temperature and the temperature at the installation place of the level meter. With such an average
temperatureitcountsincalculatingofthevelocityofacousticwavespropagationandfordetermina-
tion of the level position.
Level Distance
NO ECHO: Current in case of echo loss
DEAD ZONE: Dead zone current
The values can be set in three steps:
3.75 mA, 22 mA and LAST (last measured data).
FAILURE MODE
It denes the output current of the level meter when the measured medium level is in the dead zone
("DEADZONE")oroutsidethemeasurementrangeincaseofecholoss("NOECHO").
FAILURE MODE
NO ECHO: 3.75 mA
DEAD ZONE: 22 mA
11 .2 . services settings
In the supplemented conguration, you can set parameters of
sensitivity, mapping of false reections, temperature difference
compensation, behaviour in case of fault conditions or HART®
communication.Here,youcansetthesensorintotheinitialstate
orresetitaswell.Thesettingsareaccessibleinthebasicmenu
undertheitem"SERVICE".
BASIC SETTINGS
SERVICE
DIAGNOSTIC
CLONE SETTINGS
PASSWORD
INFO
MEDIUM TEMPERATURE
FAILURE MODE
HART
FACTORY DEFAULT
RESET
Fig. 21: Level distance zone
ULM–70 © Dinel
19
HART
HART® mode(pointtopoint,multidrop)andmultidropmodeaddress setting.Upto15unitscanbe
connectedtoonetwo-wiredcableinthemultidropmode.
In case of the address "00", the point to point
mode is enabled. The range from "01" to "15" is
reserved for addresses in the multidrop mode.
After you press the button "RUNNING"
will be displayed for about 3 sec. After the
initial values are set, "DONE" will be appear
on the display.
FACTORY DEFAULT
To reset the initial values ofthelevelmetersetbythemanufacturer,pressthebutton (see the
Factorydefaulttable,p.28).
RESET
Complete restartofthelevelmeter.Thesameeffecthasalsoashort-timeinterruptionofthesupply
voltage.Toenabletheresetting,pressthebutton
.
FACTORY DEFAULT
ARE YOU SURE?
FACTORY DEFAULT
RUNNING
FACTORY DEFAULT
DONE
PRESS ESC TO EXIT
RESET
ARE YOU SURE?
During the restart process, "RUNNING" will
be displayed. Then the level meter will be
automatically turned off and on.
MODBUS
ThisitemispartofamenuwithModbusoutputlevelmeterULM-70_-_-_-M.Modbusmodeis
intendedforthesettingsofthelevelModbusaddresses,baudrateandparitysettings.
MODBUS
ADDRESS: 001
BAUD RATE: 9600
FORMAT: 8N1
ADDRESS: 1 to 247 (default 1)
BAUD RATE: 4800, 9600, 19200
(default 9600)
FORMAT : 8N1, 8O1, 8E1, 8N2 (default 8N1)
data:
parita:N– non parity
O– odd parity
E– even parity
8– number of bits
FORMAT: number of stop bits:1
2
MEDIUM TEMPERATURE
FAILURE MODE
HART
FACTORY DEFAULT
RESET
HART
00
POLLING ADDRESS
MEDIUM TEMPERATURE
FAILURE MODE
MODBUS
FACTORY DEFAULT
RESET
MEDIUM TEMPERATURE
FAILURE MODE
MODBUS
FACTORY DEFAULT
RESET
MEDIUM TEMPERATURE
FAILURE MODE
MODBUS
FACTORY DEFAULT
RESET
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