Vega VEGAFLEX 81 User manual

Quick setup guide
TDR sensor for continuous level and
interface measurement of liquids
VEGAFLEX 81
Foundation Fieldbus
Rod and cable probe
Document ID: 47589

2
Contents
VEGAFLEX 81 • Foundation Fieldbus
47589-EN-140324
Contents
1 For your safety
1.1 Authorised personnel ....................................................................................................... 3
1.2 Appropriate use................................................................................................................ 3
1.3 Warning about incorrect use............................................................................................. 3
1.4 General safety instructions............................................................................................... 3
1.5 CE conformity................................................................................................................... 3
1.6 NAMUR recommendations .............................................................................................. 4
1.7 Environmental instructions ............................................................................................... 4
2 Product description
2.1 Conguration.................................................................................................................... 5
3 Mounting
3.1 General instructions for use of the instrument .................................................................. 7
3.2 Mounting instructions ....................................................................................................... 7
4 Connecting to power supply
4.1 Connecting..................................................................................................................... 10
4.2 Wiring plan, single chamber housing.............................................................................. 11
4.3 Wiring plan, double chamber housing ............................................................................ 12
5 Set up with the display and adjustment module
5.1 Insert display and adjustment module............................................................................ 13
5.2 Parameter adjustment - Quick setup .............................................................................. 14
6 Supplement
6.1 Technical data ................................................................................................................ 17
Information:
This quick setup guide enables a quick setup of your instrument.
Youcanndfurtherinformationinthecorresponding,comprehensive
operating instructions. This manual is available on the supplied DVD
or in the download area under "www.vega.com".
Operating instructions VEGAFLEX 81 - Foundation Fieldbus -
Rod and cable probe: Document-ID 44218
Editing status of the quick setup guide: 2014-03-17

3
1 For your safety
VEGAFLEX 81 • Foundation Fieldbus
47589-EN-140324
1 For your safety
1.1 Authorised personnel
All operations described in this operating instructions manual must
be carried out only by trained specialist personnel authorised by the
plant operator.
During work on and with the device the required personal protective
equipment must always be worn.
1.2 Appropriate use
VEGAFLEX 81 is a sensor for continuous level measurement.
Youcannddetailedinformationabouttheareaofapplicationin
chapter "Product description".
Operational reliability is ensured only if the instrument is properly
usedaccordingtothespecicationsintheoperatinginstructions
manual as well as possible supplementary instructions.
1.3 Warning about incorrect use
Inappropriate or incorrect use of the instrument can give rise to
application-specichazards,e.g.vesseloverllordamagetosystem
components through incorrect mounting or adjustment.
1.4 General safety instructions
This is a state-of-the-art instrument complying with all prevailing
regulations and guidelines. The instrument must only be operated in a
technicallyawlessandreliablecondition.Theoperatorisresponsible
for the trouble-free operation of the instrument.
During the entire duration of use, the user is obliged to determine the
compliance of the necessary occupational safety measures with the
current valid rules and regulations and also take note of new regula-
tions.
The safety instructions in this operating instructions manual, the na-
tional installation standards as well as the valid safety regulations and
accident prevention rules must be observed by the user.
For safety and warranty reasons, any invasive work on the device
beyond that described in the operating instructions manual may be
carried out only by personnel authorised by the manufacturer. Arbi-
traryconversionsormodicationsareexplicitlyforbidden.
The safety approval markings and safety tips on the device must also
be observed.
1.5 CE conformity
ThedevicefulllsthelegalrequirementsoftheapplicableECguide-
lines.ByaxingtheCEmarking,weconrmsuccessfultestingofthe
product.
YoucanndtheCECerticateofConformityinthedownloadsection
of our homepage.

4
1 For your safety
VEGAFLEX 81 • Foundation Fieldbus
47589-EN-140324
Electromagnetic compatibility
Instrumentsinfour-wireorEx-d-iaversionaredesignedforuseinan
industrial environment. Nevertheless, electromagnetic interference
from electrical conductors and radiated emissions must be taken into
account, as is usual with class A instruments according to EN 61326-
1.Iftheinstrumentisusedinadierentenvironment,theelectromag-
netic compatibility to other instruments must be ensured by suitable
measures.
1.6 NAMUR recommendations
NAMUR is the automation technology user association in the process
industry in Germany.The published NAMUR recommendations are
acceptedasthestandardineldinstrumentation.
ThedevicefulllstherequirementsofthefollowingNAMURrecom-
mendations:
• NE 21 – Electromagnetic compatibility of equipment
• NE 43 – Signal level for malfunction information from measuring
transducers
• NE53–Compatibilityofelddevicesanddisplay/adjustment
components
• NE107–Self-monitoringanddiagnosisofelddevices
For further information see www.namur.de.
1.7 Environmental instructions
Protection of the environment is one of our most important duties.
That is why we have introduced an environment management system
with the goal of continuously improving company environmental pro-
tection.Theenvironmentmanagementsystemiscertiedaccording
to DIN EN ISO 14001.
Pleasehelpusfulllthisobligationbyobservingtheenvironmental
instructions in this manual:
• Chapter "Packaging, transport and storage"
• Chapter "Disposal"

5
2 Product description
VEGAFLEX 81 • Foundation Fieldbus
47589-EN-140324
2 Product description
2.1 Conguration
Thetypelabelcontainsthemostimportantdataforidenticationand
use of the instrument:
2
1
13
14
15
16
12
11
5
3
6
4
7
8
9
10
Fig. 1: Layout of the type label (example)
1 Instrument type
2 Product code
3 Approvals
4 Power supply and signal output, electronics
5 Protection rating
6 Probe length
7 Process and ambient temperature, process pressure
8 Material, wetted parts
9 Hardware and software version
10 Order number
11 Serial number of the instrument
12 Symbol of the device protection class
13 ID numbers, instrument documentation
14 Reminder to observe the instrument documentation
15 NotiedauthorityforCEmarking
16 Approval directives
The type label contains the serial number of the instrument. With it
youcanndthefollowinginstrumentdataonourhomepage:
• Product code (HTML)
• Delivery date (HTML)
• Order-specicinstrumentfeatures(HTML)
• Operating instructions and quick setup guide at the time of ship-
ment (PDF)
• Order-specicsensordataforanelectronicsexchange(XML)
• Testcerticate(PDF)-optional
Go to www.vega.com, "VEGATools" and "Instrument search". Enter
the serial number.
Alternatively, you can access the data via your smartphone:
• Download the smartphone app "VEGATools" from the "Apple App
Store" or the "GooglePlayStore"
Type label
Serial number - Instru-
ment search

6
2 Product description
VEGAFLEX 81 • Foundation Fieldbus
47589-EN-140324
• ScantheDataMatrixcodeonthetypelabeloftheinstrumentor
• Enter the serial number manually in the app

7
3 Mounting
VEGAFLEX 81 • Foundation Fieldbus
47589-EN-140324
3 Mounting
3.1 General instructions for use of the instrument
Protect your instrument against moisture penetration through the fol-
lowing measures:
• Use the recommended cable (see chapter "Connectingtopower
supply")
• Tighten the cable gland
• Turn the housing in such a way that the cable gland points down-
ward
• Loop the connection cable downward in front of the cable gland
This applies particularly to:
• Outdoor mounting
• Installationsinareaswherehighhumidityisexpected(e.g.through
cleaning processes)
• Installations on cooled or heated vessels
3.2 Mounting instructions
Mount VEGAFLEX 81 in such a way that the distance to vessel instal-
lations or to the vessel wall is at least 300 mm (12 in). In non-metallic
vessels, the distance to the vessel wall should be at least 500 mm
(19.7 in).
During operation, the probe must not touch any installations or the
vessel wall. If necessary, fasten the probe end.
In vessels with conical bottom it can be advantageous to mount the
sensor in the center of the vessel, as measurement is then possible
nearly down to the lowest point of the bottom. Keep in mind that
measurement all the way down to the tip of the probe may not be pos-
sible.Theexactvalueofthemin.distance(lowerdeadband)isstated
in chapter "Technicaldata".
Fig. 2: Vessel with conical bottom
Protection against mois-
ture
Installation position

8
3 Mounting
VEGAFLEX 81 • Foundation Fieldbus
47589-EN-140324
Plastic vessel/Glass vessel
The guided microwave principle requires a metallic surface on the
processtting.Therefore,inplasticvessels,etc.,useaninstru-
mentversionwithange(fromDN50)orplaceametalsheet
(ø>200mm/8in)beneaththeprocessttingwhenscrewingitin.
Makesurethattheplatehasdirectcontactwiththeprocesstting.
When installing rod or cable probes in vessels without metal walls,
e.g.inplasticvessels,themeasuredvaluecanbeinuencedby
strongelectromagneticelds(emittedinterferenceaccordingto
EN61326:classA).Inthiscase,useaprobewithcoaxialversion.
1 2
Fig. 3: Installation in non-metallic vessel
1 Flange
2 Metal sheet
Ifpossible,avoidsockets.Mountthesensorushwiththevesseltop.
If this is not possible, use short sockets with small diameter.
Higher sockets or sockets with a bigger diameter can generally be
used.They can, however, increase the upper blocking distance (dead
band). Check if this is relevant for your measurement.
In such cases, always carry out a false signal suppression after instal-
lation.Youcanndfurtherinformationunder"Setup procedure".
Type of vessel
Socket

9
3 Mounting
VEGAFLEX 81 • Foundation Fieldbus
47589-EN-140324
h
d
dh
DN40 ... DN150
> DN150 ... DN200
150
100
_
<
_
<
Fig. 4: Mounting socket
Whenweldingthesocket,makesurethatthesocketisushwiththe
vessel top.
1 2
Fig.5:Socketmustbeinstalledush
1 Unfavourable installation
2 Socketush-optimuminstallation

10
4 Connecting to power supply
VEGAFLEX 81 • Foundation Fieldbus
47589-EN-140324
4 Connecting to power supply
4.1 Connecting
The voltage supply and signal output are connected via the spring-
loaded terminals in the housing.
Connection to the display and adjustment module or to the interface
adapter is carried out via contact pins in the housing.
Information:
The terminal block is pluggable and can be removed from the
electronics. To do this, lift the terminal block with a small screwdriver
and pull it out. When reinserting the terminal block, you should hear it
snap in.
Proceed as follows:
1. Unscrew the housing cover
2. If a display and adjustment module is installed, remove it by turn-
ing it slightly to the left.
3. Loosen compression nut of the cable entry gland
4. Removeapprox.10cm(4in)ofthecablemantle,stripapprox.
1 cm (0.4 in) of insulation from the ends of the individual wires
5. Insert the cable into the sensor through the cable entry
Fig.6:Connectionsteps5and6-Singlechamberhousing
Connection technology
Connection procedure

11
4 Connecting to power supply
VEGAFLEX 81 • Foundation Fieldbus
47589-EN-140324
Fig.7:Connectionsteps5and6-Doublechamberhousing
6. Insert the wire ends into the terminals according to the wiring plan
Information:
Solidcoresaswellasexiblecoreswithwireendsleevesareinsert-
eddirectlyintotheterminalopenings.Incaseofexiblecoreswithout
end sleeves, press the terminal from above with a small screwdriver,
the terminal opening is then free. When the screwdriver is released,
the terminal closes again.
Youcanndfurtherinformationonthemax.wirecross-sectionunder
"Technicaldata/Electromechanicaldata"
7. Check the hold of the wires in the terminals by lightly pulling on
them
8. Connect the screen to the internal ground terminal, connect the
outer ground terminal to potential equalisation
9. Tighten the compression nut of the cable entry gland. The seal
ring must completely encircle the cable
10. Reinsert the display and adjustment module, if one was installed
11. Screw the housing cover back on
Theelectricalconnectionisnished.
4.2 Wiring plan, single chamber housing
Thefollowingillustrationappliestothenon-Ex,Ex-iaandEx-dver-
sion.

12
4 Connecting to power supply
VEGAFLEX 81 • Foundation Fieldbus
47589-EN-140324
12
( ) (-)
1
5
0
1
0
1
+678
Bus
2
3
4
5
Fig.8:Electronicsandterminalcompartment,singlechamberhousing
1 Voltage supply, signal output
2 Contactpinsforthedisplayandadjustmentmoduleorinterfaceadapter
3 Simulation switch ("1" = mode for simulation release)
4 Forexternaldisplayandadjustmentunit
5 Groundterminalforconnectionofthecablescreen
4.3 Wiring plan, double chamber housing
Thefollowingillustrationsapplytothenon-ExaswellastotheEx-ia
version.
Bus
5
12
+
( ) (-)
678
2
3
4
1
Fig.9:Terminalcompartment,doublechamberhousing
1 Voltage supply, signal output
2 Fordisplayandadjustmentmoduleorinterfaceadapter
3 Forexternaldisplayandadjustmentunit
4 Groundterminalforconnectionofthecablescreen
Information:
Theuseofanexternaldisplayandadjustmentunitandadisplayand
adjustment module in parallel in the connection compartment is not
supported.
Electronics and terminal
compartment
Terminal compartment

13
5 Set up with the display and adjustment module
VEGAFLEX 81 • Foundation Fieldbus
47589-EN-140324
5 Set up with the display and adjustment
module
5.1 Insert display and adjustment module
The display and adjustment module can be inserted into the sensor
andremovedagainatanytime.Youcanchooseanyoneoffourdier-
ent positions - each displaced by 90°. It is not necessary to interrupt
the power supply.
Proceed as follows:
1. Unscrew the housing cover
2. Place the display and adjustment module in the requested posi-
tion onto the electronics and turn to the right until it snaps in
3. Screw housing cover with inspection window tightly back on
Removal is carried out in reverse order.
The display and adjustment module is powered by the sensor, an ad-
ditional connection is not necessary.
Fig.10:Installingthedisplayandadjustmentmoduleintheelectronicscompart-
ment of the single chamber housing

14
5 Set up with the display and adjustment module
VEGAFLEX 81 • Foundation Fieldbus
47589-EN-140324
1 2
Fig.11:Insertionofthedisplayandadjustmentmoduleintothedoublechamber
housing
1 In the electronics compartment
2 Intheconnectioncompartment(withEx-d-iaversionnotpossible)
Note:
Ifyouintendtoretrottheinstrumentwithadisplayandadjustment
module for continuous measured value indication, a higher cover with
an inspection glass is required.
5.2 Parameter adjustment - Quick setup
To quickly and easily adapt the sensor to the application, select
the menu item "Quick setup" in the start graphic on the display and
adjustment module.
Youcannd"Extendedadjustment"inthenextsub-chapter.
Application
In this menu item, you can select the application.You can choose
between level measurement and interface measurement.You can
also choose between measurement in a vessel or in a bypass or
standpipe.
Medium - dielectric constant
Inthismenuitem,youcandenethetypeofmedium(product).
Quick setup
General information
Level measurement

15
5 Set up with the display and adjustment module
VEGAFLEX 81 • Foundation Fieldbus
47589-EN-140324
Max. adjustment
Inthismenuitem,youcanenterthemax.adjustmentforthelevel.
Enter the appropriate distance value in m (corresponding to the
percentage value) for the full vessel. The distance refers to the sensor
referenceplane(sealsurfaceoftheprocesstting).Keepinmindthat
themax.levelmustliebelowthedeadband.
Min. adjustment
In this menu item, you can enter the min. adjustment for the level.
Enter the suitable distance value in m for the empty vessel (e.g.
distancefromtheangetotheprobeend)correspondingtotheper-
centage value. The distance refers tot he sensor reference plane (seal
surfaceoftheprocesstting).
Dielectric constant - upper medium
Inthismenuitem,youcandenethetypeofmedium(product).
Max. adjustment
Inthismenuitem,youcanenterthemax.adjustmentforthelevel.
Enter the appropriate distance value in m (corresponding to the
percentage value) for the full vessel. The distance refers to the sensor
referenceplane(sealsurfaceoftheprocesstting).Keepinmindthat
themax.levelmustliebelowthedeadband.
Min. adjustment
In this menu item, you can enter the min. adjustment for the level.
Enter the suitable distance value in m for the empty vessel (e.g.
distancefromtheangetotheprobeend)correspondingtotheper-
centage value. The distance refers tot he sensor reference plane (seal
surfaceoftheprocesstting).
Max. adjustment - Interface
Carryoutthemax.adjustmentfortheinterface.
To do this, enter the percentage value and the suitable distance value
in m for the full vessel.
Min. adjustment - Interface
Carry out the min. adjustment for the interface.
To do this, enter the percentage value and the suitable distance value
in m for the empty vessel.
Interface measurement

16
5 Set up with the display and adjustment module
VEGAFLEX 81 • Foundation Fieldbus
47589-EN-140324
Linearization
Alinearizationisnecessaryforallvesselsinwhichthevesselvolume
doesnotincreaselinearlywiththelevel-e.g.ahorizontalcylindri-
cal or spherical tank, when the indication or output of the volume is
required.Correspondinglinearizationcurvesarepreprogrammed
for these vessels.They represent the correlation between the level
percentage and vessel volume.
Thelinearizationappliesforthemeasuredvalueindicationandthe
current output. By activating the suitable curve, the percentage vessel
volume is displayed correctly.
False signal suppression
Highsocketsandinternalvesselinstallationscauseinterferingreec-
tionsandcaninuencethemeasurement.
A false signal suppression detects, marks and saves these false
signals so that they are no longer taken into account for the level and
interface measurement.We generally recommend carrying out a false
signal suppression to achieve the best possible accuracy.This should
be done with the lowest possible level so that all potential interfering
reectionscanbedetected.
Enter the actual distance from the sensor to the product surface.
All interfering signals in this section are detected by the sensor and
stored.
The instrument carries out an automatic false signal suppression
as soon as the probe is uncovered.The false signal suppression is
always updated.
Linearization

17
6 Supplement
VEGAFLEX 81 • Foundation Fieldbus
47589-EN-140324
6 Supplement
6.1 Technical data
Electromechanical data - version IP 66/IP 67 and IP 66/IP 68; 0.2 bar
Cable gland M20x1.5or½NPT
Wire cross-section (spring-loaded terminals)
ƲMassive wire, cord 0.2 … 2.5 mm² (AWG 24 … 14)
ƲStranded wire with end sleeve 0.2 … 1.5 mm² (AWG 24 … 16)
Voltage supply
Operating voltage
Ʋ Non-Exinstrument 9 … 32 V DC
Ʋ Non-Exinstrument 9 … 32 V DC
Ʋ Ex-iainstrument-Powersupply
FISCO model
9 … 17.5 V DC
Ʋ Ex-iainstrument-Powersupply
ENTITY model
9 … 24 V DC
Ʋ Ex-dinstrument 14 … 32 V DC
Powersupplyby/max.numberofsensors
ƲFieldbus max.32(max.10withEx)

18
Notes
VEGAFLEX 81 • Foundation Fieldbus
47589-EN-140324

19
Notes
VEGAFLEX 81 • Foundation Fieldbus
47589-EN-140324

Printing date:
VEGA Grieshaber KG
Am Hohenstein 113
77761 Schiltach
Germany
47589-EN-140324
All statements concerning scope of delivery, application, practical use and operat-
ing conditions of the sensors and processing systems correspond to the information
available at the time of printing.
Subject to change without prior notice
© VEGA Grieshaber KG, Schiltach/Germany 2014
Phone [phone]
Fax [phone]
E-mail: [email protected]
www.vega.com