Vega VEGAPULS 68 User manual
Operating Instructions
VEGAPULS 68
4 … 20 mA/HART - four-wire
Document ID: 29262
2
Contents
VEGAPULS 68 • 4 … 20 mA/HART - four-wire
29262-EN-160707
Contents
1 About this document
1.1 Function ........................................................................................................................... 4
1.2 Target group ..................................................................................................................... 4
1.3 Symbols used................................................................................................................... 4
2 For your safety
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 Safety label on the instrument .......................................................................................... 5
2.6 CE conformity................................................................................................................... 6
2.7 FulllmentofNAMURrecommendations ......................................................................... 6
2.8 FCC and IC conformity (only for USA/Canada) ................................................................ 6
2.9 Environmental instructions ............................................................................................... 6
3 Product description
3.1 Conguration.................................................................................................................... 8
3.2 Principle of operation...................................................................................................... 10
3.3 Packaging, transport and storage................................................................................... 10
3.4 Accessories and replacement parts ............................................................................... 11
4 Mounting
4.1 General instructions ....................................................................................................... 13
4.2 Mountingpreparations-Hornantenna........................................................................... 15
4.3 Mountingpreparations-Parabolicantenna.................................................................... 16
4.4 Mountinginstructions ..................................................................................................... 17
5 Connecting to power supply
5.1 Preparing the connection ............................................................................................... 26
5.2 Connection procedure.................................................................................................... 27
5.3 Wiring plan, double chamber housing ............................................................................ 28
5.4 Switch-on phase............................................................................................................. 30
6 Set up with the display and adjustment module PLICSCOM
6.1 Short description ............................................................................................................ 31
6.2 Insert display and adjustment module............................................................................ 31
6.3 Adjustment system......................................................................................................... 32
6.4 Setup steps .................................................................................................................... 33
6.5 Menuschematic............................................................................................................. 45
6.10 Saving the parameter adjustment data........................................................................... 47
7 Set up with PACTware and other adjustment programs
7.1 Connect the PC via VEGACONNECT ............................................................................ 48
7.2 Parameter adjustment with PACTware............................................................................ 49
7.3 ParameteradjustmentwithAMS™andPDM................................................................. 50
7.4 Saving the parameter adjustment data........................................................................... 51
8 Maintenanceandfaultrectication
8.1 Maintenance,cleaning ................................................................................................... 52
8.2 Rectify faults................................................................................................................... 52
8.3 Exchanging the electronics module................................................................................ 53
3
Contents
VEGAPULS 68 • 4 … 20 mA/HART - four-wire
29262-EN-160707
8.4 Software update ............................................................................................................. 54
8.5 How to proceed if a repair is necessary.......................................................................... 54
9 Dismount
9.1 Dismounting steps.......................................................................................................... 55
9.2 Disposal ......................................................................................................................... 55
10 Supplement
10.1 Technical data ................................................................................................................ 56
10.2 Dimensions .................................................................................................................... 62
10.3 Industrial property rights................................................................................................. 73
10.4 Trademark ...................................................................................................................... 73
Safety instructions for Ex areas
TakenoteoftheExspecicsafetyinstructionsforExapplications.
These instructions are attached as documents to each instrument
with Ex approval and are part of the operating instructions manual.
Editing status: 2016-07-07
4
1 About this document
VEGAPULS 68 • 4 … 20 mA/HART - four-wire
29262-EN-160707
1 About this document
1.1 Function
This operating instructions manual provides all the information you
need for mounting, connection and setup as well as important instruc-
tionsformaintenanceandfaultrectication.Pleasereadthisinforma-
tion 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 specialist
personnel.The contents of this manual should be made available to
these personnel and put into practice by them.
1.3 Symbols used
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.
SIL applications
This symbol indicates instructions for functional safety which must be
taken into account particularly for safety-relevant 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 • 4 … 20 mA/HART - four-wire
29262-EN-160707
2 For your safety
2.1 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.
2.2 Appropriate use
VEGAPULS 68 is a sensor for continuous level measurement.
Youcannddetailedinformationabouttheareaofapplicationin
chapter "Product description".
Operational reliability is ensured only if the instrument is properly
usedaccordingtothespecicationsintheoperatinginstructions
manual as well as possible supplementary instructions.
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-
traryconversionsormodicationsareexplicitlyforbidden.
2.3 Warning about incorrect use
Inappropriate or incorrect use of the instrument can give rise to
application-specichazards,e.g.vesseloverllordamagetosystem
components through incorrect mounting or adjustment.
2.4 General safety instructions
This is a high-tech instrument requiring the strict observance of stand-
ard regulations and guidelines.The user must take note of the safety
instructionsinthisoperatinginstructionsmanual,thecountry-specic
installation standards as well as all prevailing safety regulations and
accident prevention rules.
Depending on the model, the emitting frequencies of all radar sensors
are either in the C or K band range.The low transmitting power lies far
below the internationally permitted limit values. When the instrument
is used correctly, it presents no danger to human health. It may be
operated without restriction outside of closed metallic vessels.
Theinstrumentmustonlybeoperatedinatechnicallyawlessand
reliable condition.The operator is responsible for trouble-free opera-
tion 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.
2.5 Safety label on the instrument
The safety approval markings and safety tips on the device must be
observed.
6
2 For your safety
VEGAPULS 68 • 4 … 20 mA/HART - four-wire
29262-EN-160707
2.6 CE conformity
ThedevicefullsthelegalrequirementsoftheapplicableECguide-
lines.ByaxingtheCEmarking,weconrmsuccessfultestingofthe
product.
YoucanndtheCECerticateofConformityinthedownloadsection
of our homepage.
Electromagnetic compatibility
The instruments 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 a
class A instrument according to EN 61326-1. If the instrument is used
inadierentenvironment,itselectromagneticcompatibilitywithother
devices must be ensured by suitable measures.
2.7 FulllmentofNAMURrecommendations
NAMURistheautomationtechnologyuserassociationintheprocess
industryinGermany.ThepublishedNAMURrecommendationsare
acceptedasthestandardineldinstrumentation.
ThedevicefullstherequirementsofthefollowingNAMURrecom-
mendations:
• NE 21 – Electromagnetic compatibility of equipment
• NE 43 – Signal level for malfunction information from measuring
transducers
• NE53–Compatibilityofelddevicesanddisplay/adjustment
components
For further information see www.namur.de.
2.8 FCCandICconformity(onlyforUSA/Canada)
VEGAPULS sensors with all antenna versions are FCC and IC ap-
proved:
• FCC ID: O6QPULS68
• IC: 3892A-PS68
ModicationsnotexpresslyapprovedbyVEGAwillleadtoexpiryof
the operating licence according to FCC.
VEGAPULS 68 is in conformity with part 15 of the FCC regulations.
Take note of the respective operating regulations:
• This device may not cause interference, and
• The device must be resistant to interference signals, including
such that may cause undesired operating states of the device
2.9 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.Theenvironmentmanagementsystemiscertiedaccording
to DIN EN ISO 14001.
7
2 For your safety
VEGAPULS 68 • 4 … 20 mA/HART - four-wire
29262-EN-160707
Pleasehelpusfullthisobligationbyobservingtheenvironmental
instructions in this manual:
• Chapter "Packaging, transport and storage"
• Chapter "Disposal"
8
3 Product description
VEGAPULS 68 • 4 … 20 mA/HART - four-wire
29262-EN-160707
3 Product description
3.1 Conguration
The scope of delivery encompasses:
• Radar sensor
• Documentation
– Quick setup guide VEGAPULS 68
– Instructions for optional instrument features
– Ex-specic"Safety instructions" (with Ex versions)
– Ifnecessary,furthercerticates
• DVD "Software", included therein
– PACTware/DTMCollection
– Driver software
Information:
In this operating instructions manual, the optional instrument features
are described.The respective scope of delivery results from the order
specication.
The VEGAPULS 68 consists of the components:
• Horn or parabolic antenna
• processtting(dependingontheversionangeorthread)
• Bulk solid
• Eachoptionallyavailablewithswivellingholder(onlywithange),
rinsingairconnection,reuxvalve
• Housing with electronics
• Housing cover, optionally available with display and adjustment
modulePLICSCOM
Thecomponentsareavailableindierentversions.
Scope of delivery
Constituent parts
9
3 Product description
VEGAPULS 68 • 4 … 20 mA/HART - four-wire
29262-EN-160707
1
2
3
4
Fig. 1: VEGAPULS 68 - horn antenna and swivelling holder
1 Housing cover with integrated PLICSCOM (optional)
2 Housing with electronics
3 Swivellingholderwithange
4 Horn antenna
Thetypelabelcontainsthemostimportantdataforidenticationand
use of the instrument:
• Instrument type
• Article and serial number device
• Article numbers, documentation
• Technicaldata:Approvals,antennatype,processtting,process
seal/temperature, signal output, voltage supply, protection, protec-
tion class
• SILidentication(withSILratingexworks)
With the serial number, you can access the delivery data of the instru-
ment via "www.vega.com", "VEGA Tools" and "Instrument search".
Youcanndtheserialnumberontheinsideoftheinstrumentaswell
as on the type label on the outside.
This operating instructions manual applies to the following instrument
versions:
• Hardware version < 2.0.0
• Softwareversion≤3.8
Type label
Scope of this operating
instructions manual
10
3 Product description
VEGAPULS 68 • 4 … 20 mA/HART - four-wire
29262-EN-160707
3.2 Principle of operation
VEGAPULS 68 is a radar sensor in K-band technology for continuous
level measurement of solids.
A version of VEGAPULS 68 is available for each area of application.
• The version with horn antenna is particularly suitable for measure-
ment of virtually all bulk solids in small silos and vessels.
• The version with parabolic antenna is particularly suitable for large
silos and vessels with up to 70 m (76 yd) measuring distance and
formeasurementofsolidswithlowdielectricgure.
VEGAPULS 68 is also suitable for applications in liquids.
The antenna of the radar sensor emits short radar pulses with a
durationofapprox.1ns.Thesepulsesarereectedbytheproduct
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.
Four-wire electronics with separate power supply.
Thesupplyvoltagerangecandierdependingontheinstrument
version.
Thedataforpowersupplyarespeciedinchapter"Technical data".
Measuredvaluetransmissioniscarriedoutviathe4…20mA/HART
output separate from power supply.
The backlight of the display and adjustment module is powered by
the sensor. The prerequisite for this is a supply voltage at a certain
level.Theexactvoltagespecicationsarestatedinchapter"Technical
data".
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.
Application area
Functional principle
Voltage supply
Packaging
Transport
Transport inspection
Storage
11
3 Product description
VEGAPULS 68 • 4 … 20 mA/HART - four-wire
29262-EN-160707
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 %
3.4 Accessories and replacement parts
ThedisplayandadjustmentmodulePLICSCOMisusedformeasured
value indication, adjustment and diagnosis. It can be inserted into the
sensor and removed at any time.
Youcanndfurtherinformationintheoperatinginstructions"Display
and adjustment module PLICSCOM" (Document-ID 27835).
The interface adapter VEGACONNECT enables the connection of
communication-capable instruments to the USB interface of a PC. For
parameter adjustment of these instruments, an adjustment software
suchasPACTwarewithVEGA-DTMisrequired.
Youcanndfurtherinformationintheoperatinginstructions"Interface
adapter VEGACONNECT" (Document-ID 32628).
The VEGADIS 81 is an external display and adjustment unit for VEGA
plics®sensors.
For sensors with double chamber housing the interface adapter
"DISADAPT" is also required for VEGADIS 81.
Youcanndfurtherinformationintheoperatinginstructions"VE-
GADIS 81" (Document-ID 43814).
VEGADIS 82 is suitable for measured value indication and adjustment
of sensors with HART protocol. It is looped into the 4 … 20 mA/HART
signal cable.
Youcanndfurtherinformationintheoperatinginstructions"VE-
GADIS 82" (Document-ID 45300).
The protective cover protects the sensor housing against soiling and
intense heat from solar radiation.
Youwillndadditionalinformationinthesupplementaryinstructions
manual "Protective cover" (Document-ID 34296).
Flangesareavailableindierentversionsaccordingtothefollowing
standards: DIN 2501, EN 1092-1, ANSI B 16.5, JIS B 2210-1984,
GOST 12821-80.
Youcanndadditionalinformationinthesupplementaryinstructions
manual "Flanges according to DIN-EN-ASME-JIS" (Document-ID
31088).
Storage and transport
temperature
PLICSCOM
VEGACONNECT
VEGADIS 81
VEGADIS 82
Protective cap
Flanges
12
3 Product description
VEGAPULS 68 • 4 … 20 mA/HART - four-wire
29262-EN-160707
Electronics module "VEGAPULS series 60" is a replacement part for
radarsensorsofVEGAPULSseries60.Adierentversionisavailable
for each type of signal output.
Youcanndfurtherinformationintheoperatinginstructions"Elec-
tronics module VEGAPULS series 60" (Document-ID 30176).
The antenna impedance cone is a replacement part used for optimum
transmission of microwaves and for sealing against the process.
Youndfurtherinformationinthemountinginstructions"Antenna
impedance cone VEGAPULS 62 and 68" (Document-ID 31381).
TheantennacoverscanberetrottedtotheVEGAPULS68radar
sensors.They prevent from dust accumulating on the antenna system.
Youndfurtherinformationinthemountinginstructions"Antenna cov-
ers VEGAPULS 68" (Document-ID 33543).
Electronics module
Antenna impedance cone
Antenna covers
13
4Mounting
VEGAPULS 68 • 4 … 20 mA/HART - four-wire
29262-EN-160707
4 Mounting
4.1 General instructions
Select an installation position you can easily reach for mounting and
connectingaswellaslaterretrottingofadisplayandadjustment
module.The housing can be rotated by 330° without the use of any
tools.You can also install the display and adjustment module in four
dierentpositions(eachdisplacedby90°).
Warning:
With threaded versions, the housing must not be used to screw in the
instrument! Applying tightening forces on the housing can damage its
internal parts.
Use the recommended cables (see chapter "Connecting to power
supply") and tighten the cable gland.
You can give your instrument additional protection against moisture
penetration by leading the connection cable downward in front of the
cableentry.Rainandcondensationwatercanthusdraino.Thisap-
plies mainly to outdoor mounting as well as installation in areas where
high humidity is expected (e.g. through cleaning processes) or on
cooled or heated vessels.
Fig. 2: Measures against moisture ingress
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.
NPTthread
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.
Prior to setup you have to replace these protective caps with ap-
proved cable glands or close the openings with suitable blind plugs.
The reference plane for the measuring range of the sensors is the
loweredgeoftheangeorthesealsurfaceofthethread.
Installation position
Screwing in
Moisture
Cableentries-NPT
thread
Cable glands
Measuring range
14
4Mounting
VEGAPULS 68 • 4 … 20 mA/HART - four-wire
29262-EN-160707
1 32
100%
0%
4
Fig. 3: Measuring range (operating range), max. measuring distance and refer-
ence plane
1 full
2 empty (max. measuring distance)
3 Measuring range
4 Reference plane
Information:
If the medium reaches the antenna, buildup can form on it and cause
faulty measurements later on.
The emitted radar pulses of VEGAPULS 68 are electromagnetic
waves.They thus have electrical and magnetical components that are
perpendiculartoeachother.Thepolariationisdenedbythedirection
of the electrical component. With radar sensors, the polarisation can
beusedtoconsiderablyreducetheeectoffalseechoesbyturning
theinstrumentintheconnectionangeormountingboss.Theposi-
tion of the polarisation is marked on the instrument.
1
Fig. 4: Position of the polarisation of VEGAPULS 68
1 Marking hole
Polarisation
15
4Mounting
VEGAPULS 68 • 4 … 20 mA/HART - four-wire
29262-EN-160707
Makesurethatallpartsoftheinstrumentcomingindirectcontact
with the process, especially the sensor element, process seal and
processtting,aresuitablefortheexistingprocessconditions,such
as process pressure, process temperature as well as the chemical
properties of the medium.
Youcanndthespecicationsinchapter"Technical data" and on the
nameplate.
4.2 Mounting preparations - Horn antenna
VEGAPULS 68 is also available in versions where the antenna has a
biggerdiameterthantheprocesstting(thread,ange).Theantenna
mustthereforebedisconnectedfromtheprocessttingbeforemount-
ing. Proceed as follows:
1. Loosen the hexagon socket screws (3) on the antenna socket
withanAllenwrench(size3)
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
againstfallingo
4. Retighten the antenna with hexagon screws to the antenna
socket; torque max. 10 Nm (7.5 lbf ft)
Note:
The VEGAPULS 68 with rinsing air connection or antenna exten-
sion is provided with a notch on the antenna socket.This notch must
correspondtothemarkingonthehexagonoftheprocesstting(the
markingspeciesthepositionofthepolarisationoftheradarsignal).
4
3
5
1
2
Fig. 5: Dismounting of the horn antenna
1 Marking
2 Notch
3 Hexagon screws on the antenna socket
4 Antenna
Suitability for the process
conditions
16
4Mounting
VEGAPULS 68 • 4 … 20 mA/HART - four-wire
29262-EN-160707
4.3 Mounting preparations - Parabolic antenna
VEGAPULS 68 is also available in versions where the antenna has
adiameterlargerthantheprocesstting(thread,ange).Withsuch
versionstheantennamustbedisconnectedfromtheprocesstting
before mounting. Proceed as follows:
1. ClampVEGAPULS68withtheange,e.g.inabenchvice
2. Holdtheconnectionpiece(3)withawrench(spannersize22)on
theattenings
3. Loosencounternut(2)withspannersize36completelyinthe
direction antenna
4. Loosen compression nut (1) with a wrench SW 41 completely in
the direction of the antenna
5. Remove the parabolic antenna (4) axially
6. Mountsensorangeontheadapterangeandfastenittightly
7. Check if the O-ring seal is present on the connection piece and
make sure it is not damaged.
Note:
AdamagedO-ringsealmustbereplaced:FKMarticleno.2.28248,
FFKM(Kalrez6375)articleno.2.27351
8. Remount the parabolic antenna (4)
9. Tighten compression nut (1) with SW 41, torque max. 50 Nm
10. Tighten counter nut (2) with SW 36, torque max. 40 Nm.
Note:
Take note for VEGAPULS 68 with rinsing air connection that the holes
intheantennaandintheprocessttingcorrespond.Thisensuresa
sucientairow(theairisledthroughtheholestothefeedsystem.A
rinsing of the parabolic antenna in total is not intended).
1
2
3
4
Fig. 6: Dismounting, parabolic antenna
1 Compression nut
2 Counter nut
3 Connection piece
4 Parabolic antenna
17
4Mounting
VEGAPULS 68 • 4 … 20 mA/HART - four-wire
29262-EN-160707
4.4 Mounting instructions
The illustrations with the following mounting instructions show a
VEGAPULS 68 with horn antenna.The mounting instructions apply
analogously also to the version with parabolic antenna.
Mountthesensoratleast200mm(7.874in)awayfromthevessel
wall.
> 200 mm
(7.87
")
Fig. 7: Installation position
1 Reference plane
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.
To measure as much of the vessel volume as possible, the sensor
should be aligned so that the measuring beam reaches the lowest
level in the vessel. In a cylindrical silo with conical outlet, the easiest
way is to mount the instrument in the center of the silo.
Horn and parabolic
antenna
Installation position
Orientation
18
4Mounting
VEGAPULS 68 • 4 … 20 mA/HART - four-wire
29262-EN-160707
r
rr...
/
13
/
12
Fig. 8: Orientation
If mounting in the centre of the silo is not possible, the sensor can be
directed to the vessel center by using the optional swivelling holder.
The following description shows a simple way to determine the
required angle of inclination.
19
4Mounting
VEGAPULS 68 • 4 … 20 mA/HART - four-wire
29262-EN-160707
d
a
α
Fig. 9: Proposal for installation after orientation VEGAPULS 68
The angle of inclination depends on the vessel dimensions. It can be
easily checked with a suitable level or water leve on the sensor.
Tip:
VEGA recommends the adjusting aid from VEGA line of accessory.
This is a round, direction-independent water level which is simply
place to the sensor housing.
Thefollowingtablespeciesthedistance"a"betweeninstallation
position and vessel centre dependent on the measuring distance for
inclination angles of 2° … 10°.
Distance d
(m)
2° 4° 6° 8° 10°
2 0.1 0.1 0.2 0.3 0.4
4 0.1 0.3 0.4 0.6 0.7
6 0.2 0.4 0.6 0.8 1.1
8 0.3 0.6 0.8 1.1 1.4
10 0.3 0.7 1.1 1.4 1.8
15 0.5 1.0 1.6 2.1 2.6
20 0.7 1.4 2.1 2.8 3.5
25 0.9 1.7 2.6 3.5 4.4
30 1.0 2.1 3.2 4.2 5.3
35 1.2 2.4 3.7 4.9 6.2
20
4Mounting
VEGAPULS 68 • 4 … 20 mA/HART - four-wire
29262-EN-160707
Distance d
(m)
2° 4° 6° 8° 10°
40 1.4 2.8 4.2 5.6 7.1
45 1.6 3.1 4.7 6.3 7.9
50 1.7 3.5 5.3 7 8.8
55 1.9 3.8 5.8 7.7 9.7
60 2.1 4.2 6.3 8.4 10.6
65 2.3 4.5 6.8 9.1 11.5
70 2.4 4.9 7.4 9.8 12.3
Example:
In a vessel 20 m high, the installation position of the sensor is 1.4 m
from the vessel centre.
The necessary angle of inclination of 4° can be read out from this
table.
Proceed as follows to adjust the angle of inclination with the swivelling
holder:
1. Loosen terminal screw of the swivelling holder with a fork spanner
SW 13
2. Align the sensor, check angle of inclination
Information:
The max. angle of inclination of the swivelling holder is approx. 15°
3. Tighten the terminal screw, torque max. 15 Nm.
Information:
The hexagon screws must not be loosened.
Mountingshouldnotbetooclosetotheinowingmaterialasthe
microwave signal will be interferred.The optimum mounting position is
ontheoppositeofthelling.Toavoidstrongpollution,thedistanceto
thelterordustextractionmustbeasbigaspossible.
Inowingmedium
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11
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