Vega VEGAPULS 68 User manual

Operating Instructions
Radar sensor for continuous level
measurement of bulk solids
VEGAPULS 68
HART and accumulator pack
Document ID: 40935

2
Contents
VEGAPULS 68 • HART and accumulator pack
40935-EN-181127
Contents
1 About this document ............................................................................................................... 4
1.1 Function ........................................................................................................................... 4
1.2 Target group ..................................................................................................................... 4
1.3 Symbols used................................................................................................................... 4
2 For your safety ......................................................................................................................... 5
2.1 Authorised personnel ....................................................................................................... 5
2.2 Appropriate use................................................................................................................ 5
2.3 Warning about incorrect use............................................................................................. 5
2.4 General safety instructions............................................................................................... 5
2.5 EU conformity................................................................................................................... 6
2.6 NAMUR recommendations .............................................................................................. 6
2.7 Radio license for Europe .................................................................................................. 6
2.8 Radio license for USA ...................................................................................................... 6
2.9 Radio license for Canada ................................................................................................. 7
2.10 Installation and operation in the USA and Canada ........................................................... 9
2.11 Environmental instructions ............................................................................................... 9
3 Product description ............................................................................................................... 10
3.1 Conguration.................................................................................................................. 10
3.2 Principle of operation...................................................................................................... 11
3.3 Packaging, transport and storage................................................................................... 12
3.4 Accessories and replacement parts ............................................................................... 12
4 Mounting................................................................................................................................. 14
4.1 General instructions ....................................................................................................... 14
4.2 Mounting preparations ................................................................................................... 15
4.3 Mounting preparations - Parabolic antenna.................................................................... 17
4.4 Mounting instructions ..................................................................................................... 18
5 Connecting to power supply................................................................................................. 31
5.1 Connection of the battery charger .................................................................................. 31
5.2 Wiring plan ..................................................................................................................... 31
5.3 Switch-on phase............................................................................................................. 32
6 Set up with the display and adjustment module ................................................................ 34
6.1 Insert display and adjustment module............................................................................ 34
6.2 Adjustment system......................................................................................................... 35
6.3 Measured value indication - Selection of national language........................................... 36
6.4 Parameter adjustment .................................................................................................... 37
6.5 Saving the parameterisation data................................................................................... 53
7 Setup with PACTware............................................................................................................. 54
7.1 Connect the PC.............................................................................................................. 54
7.2 Parameter adjustment .................................................................................................... 54
7.3 Saving the parameterisation data................................................................................... 55
8 Set up with other systems .................................................................................................... 56
8.1 DD adjustment programs ............................................................................................... 56
8.2 Field Communicator 375, 475 ........................................................................................ 56
9 Diagnosis, asset management and service ........................................................................ 57
9.1 Maintenance .................................................................................................................. 57

3
Contents
VEGAPULS 68 • HART and accumulator pack
40935-EN-181127
9.2 Measured value and event memory ............................................................................... 57
9.3 Asset Management function........................................................................................... 58
9.4 Rectify faults................................................................................................................... 61
9.5 Exchanging the electronics module................................................................................ 64
9.6 Software update ............................................................................................................. 64
9.7 How to proceed if a repair is necessary.......................................................................... 65
10 Dismount................................................................................................................................. 66
10.1 Dismounting steps.......................................................................................................... 66
10.2 Disposal ......................................................................................................................... 66
11 Supplement ............................................................................................................................ 67
11.1 Technical data ................................................................................................................ 67
11.2 Dimensions .................................................................................................................... 73
11.3 Industrial property rights................................................................................................. 81
11.4 Trademark ...................................................................................................................... 81
Safety instructions for Ex areas
TakenoteoftheExspecicsafetyinstructionsforExapplications.
These instructions are attached as documents to each instrument
with Ex approval and are part of the operating instructions.
Editing status: 2018-11-23

4
1 About this document
VEGAPULS 68 • HART and accumulator pack
40935-EN-181127
1 About this document
1.1 Function
This operating instructions provides all the information you need for
mounting, connection and setup as well as important instructions for
maintenance,faultrectication,theexchangeofpartsandthesafety
of the user. Please read this information before putting the instrument
into operation and keep this manual accessible in the immediate
vicinity of the device.
1.2 Target group
This operating instructions manual is directed to trained personnel.
Thecontentsofthismanualmustbemadeavailabletothequalied
personnel and implemented.
1.3 Symbols used
Document ID
This symbol on the front page of this instruction refers to the Docu-
ment ID. By entering the Document ID on www.vega.com you will
reach the document download.
Information, tip, note
This symbol indicates helpful additional information.
Caution: If this warning is ignored, faults or malfunctions can result.
Warning: If this warning is ignored, injury to persons and/or serious
damage to the instrument can result.
Danger: If this warning is ignored, serious injury to persons and/or
destruction of the instrument can result.
Ex applications
This symbol indicates special instructions for Ex applications.
• List
The dot set in front indicates a list with no implied sequence.
→ Action
This arrow indicates a single action.
1 Sequence of actions
Numbers set in front indicate successive steps in a procedure.
Battery disposal
This symbol indicates special information about the disposal of bat-
teries and accumulators.

5
2 For your safety
VEGAPULS 68 • HART and accumulator pack
40935-EN-181127
2 For your safety
2.1 Authorised personnel
All operations described in this documentation must be carried out
onlybytrained,qualiedpersonnelauthorisedbytheplantoperator.
During work on and with the device, the required personal protective
equipment must always be worn.
2.2 Appropriate use
The VEGAPULS 68 is a sensor for continuous level measurement.
Due to the integrated accumulator the instrument is particularly
suitable as a portable measuring system or test sensor for special
applications.
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.
2.3 Warning about incorrect use
Inappropriate or incorrect use of this product can give rise to applica-
tion-specichazards,e.g.vesseloverllthroughincorrectmounting
or adjustment. Damage to property and persons or environmental
contamination can result. Also, the protective characteristics of the
instrument can be impaired.
2.4 General safety instructions
This is a state-of-the-art instrument complying with all prevailing
regulations and directives. The instrument must only be operated in a
technicallyawlessandreliablecondition.Theoperatorisresponsi-
ble for the trouble-free operation of the instrument.When measuring
aggressive or corrosive media that can cause a dangerous situation
if the instrument malfunctions, the operator has to implement suitable
measures to make sure the instrument is functioning properly.
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.Forsafety
reasons,onlytheaccessoryspeciedbythemanufacturermustbe
used.

6
2 For your safety
VEGAPULS 68 • HART and accumulator pack
40935-EN-181127
To avoid any danger, the safety approval markings and safety tips on
the device must also be observed and their meaning read in this oper-
ating instructions manual.
Depending on the instrument version, the emitting frequencies are in
the C, K or W band range.The low emission power is far below the
internationally approved limit values. When used correctly, the device
poses no danger to health.
2.5 EU conformity
ThedevicefullsthelegalrequirementsoftheapplicableEUdirec-
tives.ByaxingtheCEmarking,weconrmtheconformityofthe
instrument with these directives.
YoucanndtheEUconformitydeclarationonourwebsiteunder
www.vega.com/downloads.
2.6 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lstherequirementsofthefollowingNAMURrecom-
mendations:
• NE 21 – Electromagnetic compatibility of equipment
• NE 43 – Signal level for fault information from measuring transduc-
ers
• 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.
2.7 Radio license for Europe
The instrument was tested according to the latest issue of the follow-
ingharmonizedstandards:
• EN 302372 - Tank Level Probing Radar
It is hence approved for use inside closed vessels in countries of the
EU.
Use is also approved in EFTA countries, provided the respective
standards have been implemented.
For operation inside of closed vessels, points a to f in annex E of
EN302372mustbefullled.
2.8 Radio license for USA
This approval is only valid for USA. Hence the following text is only
available in the English language.
This device complies with Part 15 of the FCC Rules. Operation is
subject to the following two conditions:
• This device may not cause interference, and

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2 For your safety
VEGAPULS 68 • HART and accumulator pack
40935-EN-181127
• This device must accept any interference, including interference
that may cause undesired operation of the device
This device is approved for unrestricted use only inside closed, sta-
tionaryvesselsmadeofmetal,concreteandreinforcedberglass.
For operation outside of closed vessels, the following conditions must
befullled:
• This device shall be installed and maintained to ensure a verti-
cally downward orientation of the transmit antenna's main beam.
Furthermore, the use of any mechanism that does not allow the
main beam of the transmitter to be mounted vertically downward is
prohibited.
• Operation of the instrument with horn antennas ø 40 mm, ø 48 mm
and parabolic antenna (ø 245 mm) is only permitted within closed
vessels.
• Thisdeviceshallbeinstalledonlyatxedlocations.TheLPR
device shall not operate while being moved or while inside a mov-
ing container.
• Hand-held applications are prohibited.
• Marketing to residential consumers is prohibited.
Changesormodicationsnotexpresslyapprovedbythemanufac-
turer could void the user’s authority to operate this equipment.
2.9 Radio license for Canada
This approval is only valid for Canada. Hence the following texts are
only available in the English/French language.
This device complies with Industry Canada's license-exempt RSS
standards. Operation is subject to the following conditions:
• This device may not cause interference, and
• This device must accept any interference, including interference
that may cause undesired operation of the device
This device has been approved for both closed containers and open-
air environments with the following limitations:
• ClosedContainers:Forinstallationsutilizingatiltduringinstalla-
tion: This device is limited to installation in a completely enclosed
containermadeofmetal,concreteorreinforcedberglasstopre-
vent RF emissions, which can otherwise interfere with aeronauti-
cal navigation, the maximum approved tilt angle is 10°.
• Open Air Environment: For operation outside of closed vessels,
thefollowingconditionmustbefullled:Thisdeviceshallbe
installed and maintained to ensure a vertically downward orienta-
tion of the transmit antenna's main beam. Furthermore, the use of
any mechanism that does not allow the main beam of the transmit-
ter to be mounted vertically downward is prohibited.
• Operation of the instrument with horn antennas ø 40 mm, ø 48 mm
and parabolic antenna (ø 245 mm) is only permitted within closed
vessels.
The installation of the LPR/TLPR device shall be done by trained
installers, in strict compliance with the manufacture's instructions.

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2 For your safety
VEGAPULS 68 • HART and accumulator pack
40935-EN-181127
Thisdeviceshallbeinstalledonlyatxedlocations.TheLPRdevice
shall not operate while being moved or while inside a moving con-
tainer.
Hand-held applications are prohibited.
Marketing to residential consumers is prohibited.
The use of this device is on a "no-interference, no-protection" basis.
That ist, the user shall accept operatings of high-powered radaar in
the same frequency band which may interfere with or damage this
device.
However, devices found to interfere with primary licensing operations
will be required to be removed at the user's expense.
The installer/user of this device shall ensure that it is at least 10 km
from the Dominion Astrophysical Radio Observatory (DRAO) near
Penticton, British Columbia. The coordinates of the DRAO are latitude
49°19′15″Nandlongitude119°37′12″W.Fordevicesnotmeeting
this 10 km separation (e.g., those in the Okanagan Valley, British Co-
lumbia,) the installer/user must coordinate with, and obtain the written
concurrence of, the Director of the DRAO before the equipment can
be installed or operated.The Director of the DRAO may be contacted
at 250-497-2300 (tel.)or 250-497-2355 (fax). (Alternatively, the Man-
ager, Regulatory Standards, Industry Canada, may be contacted.)
Le présent appareil est conforme aux CNR d’Industrie Canada ap-
plicables aux appareils radio exempts de licence. L’exploitation est
autorisée aux conditions suivantes :
• L’appareil ne doit pas produire de brouillage; et
• L’utilisateur de l’appareil doit accepter tout brouillage radioélect-
rique subi, même si le brouillage est susceptible d’en compromet-
tre le fonctionnement.
Cet appareil est homologué pour une utilisation dans les cuves fer-
mées et les environnements ouverts avec les restrictions suivantes :
• Cuves fermées : Pour les installations impliquant une inclinaison
lors de l'installation : cet appareil ne doit être installé que dans une
cuve totalement fermée en en métal, en béton ou en matière plas-
tiqerenforcéedebresdeverre,pourempêcherlesémissionsRF
susceptibles d'interférer avec la navigation aéronautique. L'angle
d'inclinaison maximum autorisé est de 10°.
• Environnement ouvert : Pour l'utilisation hors des cuves fermées,
la condition suivante doit être remplie : L'appareil doit être installé
et entretenu de manière à garantir une orientation verticale vers
le bas du faisceau principal de l’antenne émettrice. De plus,
l’utilisation de tout mécanisme ne permettant pas l’orientation ver-
ticale vers le bas du faisceau principal de l’émetteur est interdite
• Il est uniquement autorisé d'exploiter l'appareil avec les antennes
cônes ø 40 mm, ø 48 mm et parabolique (ø 245 mm) dans des
boîtiers fermés.
L’installationd’undispositifLPRouTLPRdoitêtreeectuéepardes
installateursqualiés,enpleineconformitéaveclesinstructionsdu
fabricant.

9
2 For your safety
VEGAPULS 68 • HART and accumulator pack
40935-EN-181127
Cetappareilnedoitêtreinstalléqu'àdesemplacementsxes.
L’appareil LPR ne doit pas être utilisé pendant qu’il est en train d’être
déplacé ou se trouve dans un conteneur en mouvement.
Les applications portables sont interdites.
La vente à des particuliers est interdite
Ce dispositif ne peut être exploité qu'en régime de non-brouillage
et de non-protection, c'est-à-dire que l'utilisateur doit accepter que
des radars de haute puissance de la même bande de fréquences
puissent brouiller ce dispositif ou même l'endommager. D'autre part,
les capteurs de niveau qui perturbent une exploitation autorisée par
licence de fonctionnement principal doivent être enlevés aux frais de
leur utilisateur.
La personne qui installe/utilise ce capteur de niveau doit s'assurer
qu'il se trouve à au moins 10 km de l'Observatoire fédéral de radio-
astrophysique (OFR) de Penticton en Colombie-Britannique. Les
coordonnéesdel'OFRsont:latitudeN49°19′15″,longitudeO119°
37′12″.Lapersonnequiinstalle/utiliseundispositifnepouvantre-
specter cette distance de 10 km (p. ex. dans la vallée de l'Okanagan
[Colombie-Britannique]) doit se concerter avec le directeur de
l'OFRand’obtenirdesapartuneautorisationécriteavantque
l'équipement ne puisse être installé ou mis en marche. Le directeur de
l'OFR peut être contacté au 250-497-2300 (tél.) ou au 250-497-2355
(fax). (Le Directeur des Normes réglementaires d'Industrie Canada
peut également être contacté).
2.10 Installation and operation in the USA and
Canada
This information is only valid for USA and Canada. Hence the follow-
ing text is only available in the English language.
Installations in the US shall comply with the relevant requirements of
the National Electrical Code (ANSI/NFPA 70).
Installations in Canada shall comply with the relevant requirements of
the Canadian Electrical Code.
2.11 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lthisobligationbyobservingtheenvironmental
instructions in this manual:
• Chapter "Packaging, transport and storage"
• Chapter "Disposal"

10
3 Product description
VEGAPULS 68 • HART and accumulator pack
40935-EN-181127
3 Product description
3.1 Conguration
Thetypelabelcontainsthemostimportantdataforidenticationand
use of the instrument:
2
1
15
13
14
12
11
5
3
6
4
7
8
10
9
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 Measuring range
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 Data matrix code for VEGA Tools app
13 Symbol of the device protection class
14 ID numbers, instrument documentation
15 Reminder to observe the instrument documentation
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", "Search". Enter the serial number.
Alternatively, you can access the data via your smartphone:
• Download the VEGA Tools app from the "Apple App Store" or the
"Google Play Store"
• Scan the Data Matrix code on the type label of the instrument or
• Enter the serial number manually in the app
Type label
Serial number - Instru-
ment search

11
3 Product description
VEGAPULS 68 • HART and accumulator pack
40935-EN-181127
This operating instructions manual applies to the following instrument
versions:
• Hardware version from 2.1.0
• Software version from 4.5.3
The scope of delivery encompasses:
• Radar sensor with integrated accumulator
• Battery charger
• Mountingstrapwithxingmaterial(optional)
• Documentation
– Quick setup guide VEGAPULS 68
– Instructions for optional instrument features
– Ex-specic"Safety instructions" (with Ex versions)
– Ifnecessary,furthercerticates
Information:
The optional instrument features are described in the operating
instructions manual.The respective scope of delivery results from the
orderspecication.
3.2 Principle of operation
The VEGAPULS 68 is a radar sensor for continuous measurement of
bulk solids also under arduous process conditions and large measur-
ing ranges. It the ideal solution for level measurement in high silos,
largebunkers,stonecrushersandmeltingfurnaces.Withdierent
antenna versions and materials, this sensor is the optimum solution
for virtually all applications and processes.
The instrument is also suitable for applications in liquids.
Dependentontheapplicationrange,dierentversionsareused:
• Small silos and vessels, measurement of virtually all bulk solids:
Horn antenna
• Largesilosandvessels,measurementofbulksolidswithlowεr
value: Parabolic antenna
• Liquids: Parabolic antenna
Theinstrumentcanbeusedwithproductswithanεrvalue≥1.5.The
actually achievable value depends on the measuring conditions and
the antenna system.
The antenna of the radar sensor emits short radar pulses with a
durationofapprox.1ns.Thesepulsesarereectedbytheproduct
and received by the antenna as echoes. The transit time of the radar
pulses from emission to reception is proportional to the distance and
hence to the level.The determined level is converted into an appropri-
ate output signal and outputted as measured value.
The instrument is powered via an integrated accumulator.This allows
operation of the instrument independently of the mains or a control
system. To achieve a longer battery lifetime, the instrument is preset
to HART multidrop. This puts a load of only 4 mA current on the ac-
cumulator.
Scope of this operating
instructions
Scope of delivery
Application area
Functional principle
Voltage supply

12
3 Product description
VEGAPULS 68 • HART and accumulator pack
40935-EN-181127
3.3 Packaging, transport and storage
Your instrument was protected by packaging during transport. Its
capacity to handle normal loads during transport is assured by a test
based on ISO 4180.
The packaging of standard instruments consists of environment-
friendly, recyclable cardboard. For special versions, PE foam or PE
foil is also used. Dispose of the packaging material via specialised
recycling companies.
Transport must be carried out in due consideration of the notes on the
transport packaging. Nonobservance of these instructions can cause
damage to the device.
The delivery must be checked for completeness and possible transit
damage immediately at receipt. Ascertained transit damage or con-
cealed defects must be appropriately dealt with.
Up to the time of installation, the packages must be left closed and
stored according to the orientation and storage markings on the
outside.
Unless otherwise indicated, the packages must be stored only under
the following conditions:
• Not in the open
• Dry and dust free
• Not exposed to corrosive media
• Protected against solar radiation
• Avoiding mechanical shock and vibration
• Storage and transport temperature see chapter "Supplement -
Technical data - Ambient conditions"
• Relative humidity 20 … 85 %
With instrument weights of more than 18 kg (39.68 lbs) suitable and
approved equipment must be used for lifting and carrying.
3.4 Accessories and replacement parts
The display and adjustment module PLICSCOM is used for measured
value indication, adjustment and diagnosis. It can be inserted into the
sensor or the external display and adjustment unit and removed at
any time.
The integrated Bluetooth module (optional) enables wireless adjust-
ment via standard adjustment devices:
• Smartphone/tablet (iOS or Android operating system)
• PC/notebook with Bluetooth USB adapter (Windows operating
system)
Youcanndfurtherinformationintheoperatinginstructions"Display
and adjustment module PLICSCOM" (Document-ID 36433).
The interface adapter VEGACONNECT enables the connection of
communication-capable instruments to the USB interface of a PC. For
Packaging
Transport
Transport inspection
Storage
Storage and transport
temperature
Lifting and carrying
PLICSCOM
VEGACONNECT

13
3 Product description
VEGAPULS 68 • HART and accumulator pack
40935-EN-181127
parameter adjustment of these instruments, the adjustment software
PACTware with VEGA-DTM is required.
Youcanndfurtherinformationintheoperatinginstructions"Interface
adapter VEGACONNECT" (Document-ID 32628).
The protective cover protects the sensor housing against soiling and
intense heat from solar radiation.
Youwillndadditionalinformationinthesupplementaryinstructions
manual "Protective cover" (Document-ID 34296).
Screwedangesareavailableindierentversionsaccordingtothe
following standards: DIN 2501, EN 1092-1, BS 10, ASME B 16.5,
JIS B 2210-1984, GOST 12821-80.
Youcanndadditionalinformationinthesupplementaryinstructions
manual "Flanges according to DIN-EN-ASME-JIS".
Electronics module "VEGAPULS series 60" is a replacement part for
radarsensorsofVEGAPULSseries60.Adierentversionisavailable
for each type of signal output.
Youcanndfurtherinformationintheoperatinginstructions"Elec-
tronics module VEGAPULS series 60" (Document-ID 36801).
The supplementary electronics "Power pack" is a replacement part for
sensors with integrated accumulator.
Youcanndfurtherinformationintheoperatinginstructions"Sup-
plementary electronics for 4 … 20 mA/HART and power pack"
(Document-ID 41033).
The antenna impedance cone is a replacement part used for optimum
transmission of microwaves and for sealing against the process.
Youndfurtherinformationintheoperatinginstructions"Antenna
impedance cone VEGAPULS 62 and 68" (Document-ID 31381).
Protective cover
Flanges
Electronics module
Supplementary electron-
ics for power pack
Antenna impedance cone

14
4 Mounting
VEGAPULS 68 • HART and accumulator pack
40935-EN-181127
4 Mounting
4.1 General instructions
Ondeviceswithathreadedtting,thehexagonontheprocesstting
must be tightened with a suitable wrench.
See chapter "Dimensions"forwrenchsize.
Warning:
The housing or the electrical connection may not be used for screw-
ing in! Tightening can cause damage, e. g. to the rotation mechanism
of the housing.
Protect your instrument against moisture ingress through the following
measures:
• Use a suitable connection cable (see chapter "Connecting to
power supply")
• Tighten the cable gland or plug connector
• Whenmountinghorizontally,turnthehousingsothatthecable
gland or plug connector point downward
• Lead the connection cable downward in front of the cable entry or
plug connector.
This applies mainly to outdoor installations, in areas where high
humidity is expected (e.g. through cleaning processes) and on cooled
or heated vessels.
To maintain the housing protection, make sure that the housing lid is
closed during operation and locked, if necessary.
Makesurethatthedegreeofcontaminationspeciedinchapter
"Technical data" meets the existing ambient conditions.
Make sure before mounting that all parts of the instrument exposed to
the process are suitable for the existing process conditions.
These are mainly:
• Active measuring component
• Processtting
• Process seal
Process conditions in particular are:
• Process pressure
• Process temperature
• Chemical properties of the medium
• Abrasionandmechanicalinuences
Youcannddetailedinformationontheprocessconditionsinchapter
"Technical data" as well as on the type label.
The instrument is suitable for standard and extended ambient condi-
tions acc. to IEC/EN 61010-1.
Screwing in
Protection against mois-
ture
Suitability for the process
conditions
Suitability for the ambient
conditions

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4 Mounting
VEGAPULS 68 • HART and accumulator pack
40935-EN-181127
Metric threads
In the case of instrument housings with metric thread, the cable
glands are screwed in at the factory. They are sealed with plastic
plugs as transport protection.
You have to remove these plugs before electrical connection.
NPT thread
In the case of instrument housings with self-sealing NPT threads, it is
not possible to have the cable entries screwed in at the factory. The
free openings for the cable glands are therefore covered with red dust
protection caps as transport protection.The dust protection caps do
notprovidesucientprotectionagainstmoisture.
Prior to setup you have to replace these protective caps with ap-
proved cable glands or close the openings with suitable blind plugs.
4.2 Mounting preparations
The instrument is also available in versions with an antenna whose
diameterislargerthantheprocesstting(thread,ange).Insuch
casestheantennamustbedisconnectedfromtheprocesstting
before mounting.
Proceed as follows:
1. Loosen the hexagon socket screws (3) on the antenna socket
withanAllenwrench(size3)
2. Remove the antenna (4)
Note:
The plastic cone may not be pulled out of the antenna socket.
3. Insert the antenna from below into the vessel socket and secure it
againstfallingo
4. Retighten the antenna with hexagon screws to the antenna
socket; max. torque see chapter "Technical data"
Note:
The radar sensor with rinsing air connection or with antenna exten-
sionhasanotchontheantennasocketforpolarization.Thisnotch
mustbealignedwiththemarkingontheprocesstting.
Cable glands
Horn antenna

16
4 Mounting
VEGAPULS 68 • HART and accumulator pack
40935-EN-181127
4
3
5
1
2
Fig. 2: Dismounting of the horn antenna
1 Markingontheprocesstting
2 Marking at the antenna socket
3 Screw locking device
4 Hexagon socket screws
5 Antenna
Caution:
A secure hold of the antenna is only ensured with the untwist guard.
The untwist guards inserted on site must hence be used again.
Depending on temperature range and antenna material, these are
spring rings according to DIN 217 or wedge lock washers according
to DIN 25 201.
Proceed as follows:
1. ClampVEGAPULS68withtheange,e.g.inabenchvice
2. Holdtheconnectionpiece(1)withawrenchontheatsurfaces
(widthacrossats22mm)
3. Loosen counter nut (3) completely with a wrench (width across
ats36mm)inthedirectionoftheantenna
4. Loosen compression nut (2) completely with a wrench (width
acrossats41mm)inthedirectionoftheantenna
5. Remove the parabolic antenna (4) axially
6. Mountsensorangeontheadapterangeandfastenittightly
7. Check if the O-ring seal is present on the connection piece and
make sure it is not damaged.
Note:
A damaged O-ring seal must be replaced: FKM (SHS FPM 70C3
GLT),FFKM(Kalrez6375)
8. Remount the parabolic antenna (4)
9. Fastencompressionnut(2)withawrench(widthacrossats41),
max. torque see chapter "Technical data"
10. Fastencounternut(3)withawrench(widthacrossats36),max.
torque see chapter "Technical data"
Parabolic antenna

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4 Mounting
VEGAPULS 68 • HART and accumulator pack
40935-EN-181127
Note:
On the version with rinsing air connection, make sure that the holes
intheantennaandintheprocessttingcoincide.Thisensuresasuf-
cientairow(theairisledthroughtheholestothefeedsystem.A
rinsing of the whole parabolic antenna is not intended).
1
2
3
4
Fig. 3: Dismounting, parabolic antenna
1 Connection piece
2 Compression nut
3 Counter nut
4 Parabolic antenna
4.3 Mounting preparations - Parabolic antenna
The instrument is also available in versions where the antenna has
adiameterlargerthantheprocesstting(thread,ange).Withsuch
versionstheantennamustbedisconnectedfromtheprocesstting
before mounting. Proceed as follows:
1. ClampVEGAPULS68withtheange,e.g.inabenchvice
2. Holdtheconnectionpiece(1)withawrenchontheatsurfaces
(widthacrossats22mm)
3. Loosen counter nut (3) completely with a wrench (width across
ats36mm)inthedirectionoftheantenna
4. Loosen compression nut (2) completely with a wrench (width
acrossats41mm)inthedirectionoftheantenna
5. Remove the parabolic antenna (4) axially
6. Mountsensorangeontheadapterangeandfastenittightly
7. Check if the O-ring seal is present on the connection piece and
make sure it is not damaged.
Note:
A damaged O-ring seal must be replaced: FKM (SHS FPM 70C3
GLT),FFKM(Kalrez6375)
8. Remount the parabolic antenna (4)
9. Fastencompressionnut(2)withawrench(widthacrossats41),
max. torque see chapter "Technical data"
10. Fastencounternut(3)withawrench(widthacrossats36),max.
torque see chapter "Technical data"

18
4 Mounting
VEGAPULS 68 • HART and accumulator pack
40935-EN-181127
Note:
On the version with rinsing air connection, make sure that the holes
intheantennaandintheprocessttingcoincide.Thisensuresasuf-
cientairow(theairisledthroughtheholestothefeedsystem.A
rinsing of the whole parabolic antenna is not intended).
1
2
3
4
Fig. 4: Dismounting, parabolic antenna
1 Connection piece
2 Compression nut
3 Counter nut
4 Parabolic antenna
4.4 Mounting instructions
The illustrations with the following mounting instructions show a radar
sensor with horn antenna.The mounting instructions apply analo-
gously also to the version with parabolic antenna.
The emitted radar impulses of the radar sensor are electromagnetic
waves.The polarisation is the direction of the electrical wave compo-
nent.Byturningtheinstrumentintheconnectionangeormounting
boss,thepolarisationcanbeusedtoreducetheeectsoffalse
echoes.
Thepositionofthepolarisationismarkedontheprocessttingofthe
instrument.
12
Fig. 5: Position of the polarisation
1 Marking with screwed version
2 Markingwithangeversion
Mount the sensor at least 200 mm (7.874 in) away from the vessel
wall.
Horn and parabolic
antenna
Polarisation
Installation position

19
4 Mounting
VEGAPULS 68 • HART and accumulator pack
40935-EN-181127
200 mm
(7.87
")
Fig. 6: Mounting the radar sensor on the vessel top
If you cannot maintain this distance, you should carry out a false
signal suppression during setup. This applies particularly if buildup on
the vessel wall is expected. In such cases, we recommend repeating
the false signal suppression at a later date with existing buildup.
Mountingshouldnotbetooclosetotheinowingmaterialasthe
microwave signal will be interferred.The optimum mounting position is
ontheoppositeofthelling.Toavoidstrongpollution,thedistanceto
thelterordustextractionmustbeasbigaspossible.
Fig.7:Mountingoftheradarsensorwithinowingmedium
Withbulksolidssiloswithlateralpneumaticlling,mountingshould
notbeinthellingstreamasthemicrowavesignalwillbeinterferred.
Theoptimummountingpositionisnexttothelling.Toavoidstrong
pollution,thedistancetothelterordustextractionmustbeasbigas
possible.
Inowingmedium

20
4 Mounting
VEGAPULS 68 • HART and accumulator pack
40935-EN-181127
Fig.8:Mountingoftheradarsensorwithinowingmedium
The socket piece should be dimensioned in such a way that the
antenna end protrudes slightly out of the socket.
Mounting socket