VEGA Grieshaber KG PS60XS1 VEGAPULS 67/68 Tank Level Probing Radar User Manual FCC Part 15 209 TLPR Report
VEGA Grieshaber KG VEGAPULS 67/68 Tank Level Probing Radar FCC Part 15 209 TLPR Report
User Manual
Operating Instructions
VEGAPULS 68
4…20 mA/HART two-wire
Document ID:
36535
Radar
Contents
1About this document
1.1Function.................................. 4
1.2Target group .............................. 4
1.3Symbolism used............................ 4
2For your safety
2.1Authorised personnel ........................ 5
2.2Appropriate use ............................ 5
2.3Warning about misuse ....................... 5
2.4General safety instructions . . . . . . . . . . . . . . . . . . . . 5
2.5CE conformity ............................. 6
2.6Fulfillment of NAMUR recommendations . . . . . . . . . . 6
2.7Radio approval for Europe . . . . . . . . . . . . . . . . . . . . 6
2.8Radio approval for USA/Canada . . . . . . . . . . . . . . . . 6
2.9Environmental instructions..................... 6
3Product description
3.1Configuration .............................. 7
3.2Principle of operation ........................ 8
3.3Packaging,transport and storage ............... 8
3.4Accessories and replacement parts . . . . . . . . . . . . . . 9
4Mounting
4.1General instructions ......................... 11
4.2Mounting preparations -Horn antenna . . . . . . . . . . . . 11
4.3Mounting preparations -Parabolic antenna. . . . . . . . . 12
4.4Mounting instructions ........................ 13
5Connecting to power supply
5.1Preparing the connection ..................... 27
5.2Connection................................ 28
5.3Wiring plan,single chamber housing . . . . . . . . . . . . . 30
5.4Wiring plan,double chamber housing . . . . . . . . . . . . 30
5.5Wiring plan with double chamber housing Ex d . . . . . 31
5.6Wiring plan -version IP 66/IP 68,1bar . . . . . . . . . . . 32
5.7Switch on phase............................ 32
6Set up with the indicating and adjustment module
6.1Insert indicating and adjustment module. . . . . . . . . . . 33
6.2Adjustment system .......................... 34
6.3Parameter adjustment........................ 35
6.4Saving the parameter adjustment data . . . . . . . . . . . . 43
7Setup with PACTware
7.1Connecting the PC .......................... 44
7.2Parameter adjustment with PACTware . . . . . . . . . . . . 45
7.3Saving the parameter adjustment data . . . . . . . . . . . . 46
2VEGAPULS 68 •4…20 mA/HART two-wire
Contents
36535-EN-100607
8Set up with other systems
8.1DD adjustment programs ..................... 47
8.2Communicator 375,475 ...................... 47
9Diagnosis,fault rectification and service
9.1Maintenance .............................. 48
9.2Measured value and event memory . . . . . . . . . . . . . . 48
9.3Error messages according to NE 107 . . . . . . . . . . . . 49
9.4Rectify malfunctions ......................... 52
9.5Exchanging the electronics module . . . . . . . . . . . . . . 53
9.6Software update ............................ 53
9.7How to proceed in case of repair................ 54
10 Dismounting
10.1Dismounting steps .......................... 55
10.2Disposal ................................. 55
11 Supplement
11.1Technical data ............................. 56
11.2Dimensions ............................... 65
Safety instructions for Ex areas
Please note the Ex-specific safety information for installation and
operation in Ex areas.These safety instructions are part of the
operating instructions manual and come with the Ex-approved
instruments.
VEGAPULS 68 •4…20 mA/HART two-wire 3
Contents
36535-EN-100607
1About this document
1.1Function
This operating instructions manual provides all the information you
need for mounting,connection and setup as well as important
instructions for maintenance and fault rectification.Please read this
information before putting the instrument into operation and keep this
manual accessible in the immediate vicinity of the device.
1.2Target group
This operating instructions manual is directed to trained qualified
personnel.The contents of this manual should be made available to
these personnel and put into practice by them.
1.3Symbolism 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.
lList
The dot set in front indicates a list with no implied sequence.
àAction
This arrow indicates a single action.
1Sequence
Numbers set in front indicate successive steps in a procedure.
4VEGAPULS 68 •4…20 mA/HART two-wire
1About this document
36535-EN-100607
2For your safety
2.1Authorised 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.
2.2Appropriate use
VEGAPULS 68 is a sensor for continuous level measurement.
You can find detailed information on the application range in chapter
"Product description".
Operational reliability is ensured only if the instrument is properly used
according to the specifications in the operating instructions manual as
well as possible supplementary instructions.
2.3Warning about misuse
Inappropriate or incorrect use of the instrument can give rise to
application-specific hazards,e.g.vessel overfill or damage to system
components through incorrect mounting or adjustment.
2.4General 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 flawless 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 required occupational safety measures with the
current valid rules and regulations and also take note of new
regulations.
The safety instructions in this operating instructions manual,the
national 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.Arbitrary
conversions or modifications are explicitly forbidden.
The safety approval markings and safety tips on the device must also
be observed.
VEGAPULS 68 •4…20 mA/HART two-wire 5
2For your safety
36535-EN-100607
Depending on the instrument version,the emitting frequencies are in
the Cor Kband range.The low emitting frequencies are far below the
internationally approved limit values.When used correctly,there is no
danger to health.
2.5CE conformity
The device fulfills the legal requirements of the applicable EC
guidelines.By attaching the CE mark,VEGA provides a confirmation
of successful testing.You can find the CE conformity declaration in the
download area of www.vega.com.
2.6Fulfillment of NAMUR recommendations
The device fulfils the requirements of the concerned NAMUR
recommendation.You can find detailed information in the download
section under www.vega.com.
2.7Radio approval for Europe
The instrument is approved according to EN 302372-2:2006-08 for
use in closed vessels.
2.8Radio approval for USA/Canada
This device complies with Part 15 of the FCC Rules.Operation is
subject to the following two conditions:
lthis device may not cause harmful interference,and
lthis device must accept any interference received,including
interference that may cause undesired operation.
Changes or modifications not expressly approved by the manufacturer
could void the user`s authority to operate the equipment.
This device complies with IC RSS-210.
This device is only allowed to operate within closed tanks or containers
made of metal,concrete or glass-fiber reinforced plastic.
2.9Environmental 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 protection.
The environment management system is certified according to DIN
EN ISO 14001.
Please help us fulfil this obligation by observing the environmental
instructions in this manual:
lChapter "Packaging,transport and storage"
lChapter "Disposal"
6VEGAPULS 68 •4…20 mA/HART two-wire
2For your safety
36535-EN-100607
3Product description
3.1Configuration
The type label contains the most important data for identification and
use of the instrument:
2
1
12
11
5
3
6
4
7
8
9
10
Fig.1:Structure of the type label (example)
1Instrument type
2Product code
3Approvals
4Electronics
5Protection rating
6Measuring range
7Process temperature,process pressure
8Material,wetted parts
9Hardware and software version
10 Order number
11 Serial number of the instrument
12 ID numbers,instrument documentation
The serial number on the type label of the instrument allows you to
have the order data,operating instructions manuals,sensor data for
the service DTM as well as the test certificate (depending on the
instrument)displayed via www.vega.com,"VEGA Tools"and "serial
number search".
This operating instructions manual applies to the following instrument
versions:
lHardware from 2.0.1
lSoftware from 4.1.0
The scope of delivery encompasses:
lRadar sensor
lDocumentation
-this operating instructions manual
-Safety Manual (SIL)VEGAPULS 68 (optional)
Type label
Serial number
Scope of the operating
instructions manual
Scope of delivery
VEGAPULS 68 •4…20 mA/HART two-wire 7
3Product description
36535-EN-100607
-Operating instructions manual "Indicating and adjustment
module"(optional)
-Operating instructions "Radio module"(optional)
-Supplementary instructions manual "Heating for indicating and
adjustment module"(optional)
-Supplementary instructions manual "Plug connector for con-
tinuously measuring sensors"(optional)
-Ex-specific"Safety instructions"(with Ex versions)
-if necessary,further certificates
3.2Principle of operation
Aversion of VEGAPULS 68 is available for each area of application.
The version with horn antenna is particularly suitable for small silos
and vessels for measurement of virtually all bulk solids.The version
with parabolic antenna is particularly suitable for large silos and
vessels with up to 75 m(246 ft)measuring distance and for
measurement of bulk solids with low ε
r
value
The instrument is also suitable for applications in liquids.
The antenna of the radar sensor emits short radar pulses with a
duration of approx.1ns.These pulses are reflected by the product
and received by the antenna as echoes.The running 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
appropriate output signal and outputted as measured value.
3.3Packaging,transport and storage
Your instrument was protected by packaging during transport.Its
capacity to handle normal loads during transport is assured by a test
according to DIN EN 24180.
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 under 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
concealed defects must be reported.
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
Packaging
Transport
Transport inspection
Storage
8VEGAPULS 68 •4…20 mA/HART two-wire
3Product description
36535-EN-100607
Unless otherwise indicated,the packages must be stored only under
the following conditions:
lNot in the open
lDry and dust free
lNot exposed to corrosive media
lProtected against solar radiation
lAvoiding mechanical shock and vibration
lStorage and transport temperature see chapter "Supplement -
Technical data -Ambient conditions"
lRelative humidity 20 …85 %
3.4Accessories and replacement parts
The indicating and adjustment module PLICSCOM is used for
measured value indication,adjustment and diagnosis.It can be
inserted into the sensor and removed at any time.
You can find further information in the operating instructions "Indicating
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
such as PACTware with VEGA-DTM is required.
You can find further information in the operating instructions "Interface
adapter VEGACONNECT"(Document-ID 32628).
VEGADIS 61 is an external indicating and adjustment unit for sensors
with single chamber housing and double chamber housing Ex d.
It is suitable for measured value indication and adjustment of plics®
sensors and is connected to the sensor with an up to 50 m long,four-
wire,screened standard cable.
You can find further information in the operating instructions
"VEGADIS 61"(Document-ID 27720).
VEGADIS 62 is suitable for measured value indication and adjustment
of sensors with HART protocol.It is looped into the 4…20 mA/HART
signal cable.
You can find further information in the operating instructions
"VEGADIS 62"(Document-ID 36469).
The PLICSMOBILE T 61 is an external GSM/GPRS radio unit for
transmission of measured values and for remote parameter adjust-
ment of plics®sensors.The adjustment is carried out via PACTware/
DTM by using the integrated USB connection.
Storage and transport
temperature
Indicating and adjust-
ment module
Interface adapter
External indicating and
adjustment unit
External indicating and
adjustment unit with
HART protocol
External radio unit
VEGAPULS 68 •4…20 mA/HART two-wire 9
3Product description
36535-EN-100607
You can find further information in the operating instructions
"PLICSMOBILE T 61"(Document-ID 32865).
The protective cover protects the sensor housing against soiling and
intense heat from solar radiation.
You will find additional information in the supplementary instructions
manual "Protective cover"(Document-ID 34296).
The electronics module VEGAPULS series 60 is a replacement part
for radar sensors of VEGAPULS series 60.Aseparate version is
available for each type of signal output.
You can find further information in the operating instructions
"Electronics module VEGAPULS series 60 "(Document-ID 36801).
Protective cover
Electronics module
10 VEGAPULS 68 •4…20 mA/HART two-wire
3Product description
36535-EN-100607
4Mounting
4.1General instructions
With instruments with threaded process fitting,suitable tools must be
applied for tightening the hexagon.
Warning:
The housing must not be used to screw the instrument in!Applying
tightening force can damage internal parts of the housing.
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
cable entry.Rain and condensation water can thus drain off.This
applies 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.
Make sure that all parts of the instrument exposed to the process,in
particular the antenna,seal and process fitting,are suitable for the
existing process conditions.These include above all the process
pressure,process temperature as well as the chemical properties of
the medium.
You can find the specifications in chapter "Technical data"or on the
type label.
4.2Mounting preparations -Horn antenna
The instrument is also available in versions where the antenna has a
bigger diameter than the process fitting (thread,flange). The antenna
must therefore be disconnected from the process fitting before
mounting.Proceed as follows:
1Loosen the hexagon screws (3)on the antenna socket with an
Allen wrench (size 3)
2Remove the antenna (4)
Note:
The plastic conemust not be pulled out of the antenna socket.
3Insert the antenna from below into the vessel socket and secure it
against falling off
4Retighten the antenna with hexagon screws to the antenna socket;
torque max.10 Nm(7.5lbf ft)
Screwing in
Moisture
Suitability for the pro-
cess conditions
VEGAPULS 68 •4…20 mA/HART two-wire 11
4Mounting
36535-EN-100607
Note:
The radar sensor with rinsing air connection or antenna extension is
provided with a notch on the antenna socket.This notch must
correspond to the marking on the hexagon of the process fitting (the
marking specifies the position of the polarisation level of the radar
signal).
3
4
1
2
Fig.2:Dismounting of the horn antenna
1Marking of the polarisation plane
2Notch at the antenna socket
3Hexagon screws on the antenna socket
4Antenna
4.3Mounting preparations -Parabolic antenna
The instrument is also available in versions where the antenna has a
diameter larger than the process fitting (thread,flange). With such
versions the antenna must be disconnected from the process fitting
before mounting.Proceed as follows:
1Clamp VEGAPULS 68 with the flange,e.g.in a bench vice
2Hold the connection piece (3)with a wrench (width across flats 22)
on the flattenings
3Loosen counter nut (2)completely with a wrench (width across
flats 36)in the antenna direction
4Loosen compression nut (1)completely with a wrench (width
across flats 41)in the antenna direction
5Remove the parabolic antenna (4)axially
6Mount sensor flange to the adapter flange and clamp it
7Check,if the O-ring seal is available on the connection piece and if
it is not damaged.
12 VEGAPULS 68 •4…20 mA/HART two-wire
4Mounting
36535-EN-100607
Note:
Adamaged O-ring seal must be replaced:FKM (Viton)article no.
2.28248,FFKM (Kalrez 6375)article no.2.27351
8Remount the parabolic antenna (4)
9Fasten compression nut (1)with a wrench (width across flats 41),
torque max.50 Nm
10 Fasten counter nut (2)with a wrench (width across flats 36), torque
max.40 Nm
Note:
Take note for the version with rinsing air connection that the holes in
the antenna and in the process fitting correspond.This ensures a
sufficient air flow (the air is led through the holes to the feed system.A
rinsing of the parabolic antenna in total is not intended).
1
2
3
4
Fig.3:Dismounting,parabolic antenna
1Compression nut
2Locknut
3Connection piece
4Parabolic antenna
4.4Mounting 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 level is the direction of the electrical wave
component.By turning the instrument in the connection flange or
mounting boss,the polarisation can be used to reduce the effects of
false echoes.
The position of the polarisation plane is marked on the process fitting
of the instrument.
Horn and parabolic an-
tenna
Polarisation plane
VEGAPULS 68 •4…20 mA/HART two-wire 13
4Mounting
36535-EN-100607
1
1
Fig.4:Position of the polarisation level
1Marking hole
Mount the sensor at least 200 mm (7.874 in)away from the vessel
wall.
1
> 200 mm
(7.87
")
Fig.5:Mounting of the radar sensor on round vessel tops
If you cannot keep this distance you should carry out a false echo
storage before setup.This applies mainly if buildup on the vessel wall
is expected.In this case,we recommend repeating a false echo
storage later with existing buildup.
Mounting should not be too close to the inflowing material as the
microwave signal will be interferred.The optimum mounting position is
on the opposite of the filling.To avoid strong pollution,the distance to
the filter or dust extraction must be as big as possible.
Mounting position
Inflowing medium
14 VEGAPULS 68 •4…20 mA/HART two-wire
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36535-EN-100607
Fig.6:Mounting of the radar sensor with inflowing medium
The socket piece should be dimensioned in such a way that the
antenna end protrudes slightly out of the socket.
ca. 10 mm
Fig.7:Recommended socket mounting
Socket
VEGAPULS 68 •4…20 mA/HART two-wire 15
4Mounting
36535-EN-100607
When using a swivelling holder,keep in mind that the distance
between antenna and socket gets smaller as the inclination of the
sensor increases.Additional false reflections may be generated which
can influence the measuring result at close range.
Fig.8:Distance between antenna and socket
If the medium has good reflective properties,VEGAPULS 68 can also
be mounted on a longer socket piece.Recommended values for
socket heights are specified in the following illustration.You must carry
out a false echo storage afterwards.
d
hmax.
Fig.9:Deviating socket dimensions
16 VEGAPULS 68 •4…20 mA/HART two-wire
4Mounting
36535-EN-100607
Socket diameter d Socket length h
40 mm 100 mm
50 mm 150 mm
80 mm 250 mm
100 mm 500 mm
150 mm 800 mm
Socket diameter d Socket length h
1½" 3.9in
2"5.9in
3"9.8in
4"19.7in
6"31.5in
Tip:
The instrument is also optionally available with an antenna extension.
The antenna length can be selected (either ex works or later)to allow
the antenna to protrude slightly out of the end of the mounting socket.
Due to the antenna extension however,disturbing reflections are
generated in the close-up range.This can lead to an increase in the
required minimum distance,especially with poorly reflecting media
such as plastic powder.In practice,a cleanly constructed mounting
socket,if necessary with rounded edges,introduces fewer disturbing
influences than an antenna extension.
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.
Orientation
VEGAPULS 68 •4…20 mA/HART two-wire 17
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36535-EN-100607
Fig.10:Orientation
If mounting in the center of the silo is not possible,the sensor can be
directed to the vessel center by means of an optional swivelling holder.
The following description gives an overview on the determination of
the necessary angle of inclination.
18 VEGAPULS 68 •4…20 mA/HART two-wire
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36535-EN-100607
d
a
α
Fig.11: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.
The following chart specifies the distance "a"between installation
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
40 1.4 2.8 4.2 5.6 7.1
45 1.6 3.1 4.7 6.3 7.9
VEGAPULS 68 •4…20 mA/HART two-wire 19
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36535-EN-100607
Distance d
(m)
2°4°6°8°10°
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 1.4m
from the vessel centre.
The necessary angle of inclination of 4°can be read out from this
chart.
Proceed as follows to adjust the angle of inclination with the swivelling
holder:
1Loosen terminal screw of the swivelling holder with a fork spanner
SW 13
2Direct the sensor,check angle of inclination
Information:
The max.angle of inclination of the swivelling holder is approx.15°
3Tighten the terminal screw,torque max.20 Nm.
Information:
The hexagon screws must not be loosened.
The mounting location of the radar sensor should be a place where no
other equipment or fixtures cross the path of the microwave signals.
Vessel installations,such as e.g.ladders,limit switches,heating
spirals,struts,etc., can cause false echoes and impair the useful echo.
Make sure when planning your measuring site that the radar sensor
has a "clear view"to the measured product.
In case of existing vessel installations,a false echo storage should be
carried out during setup.
If large vessel installations such as struts or supports cause false
echoes,these can be attenuated through supplementary measures.
Small,inclined sheet metal baffles above the installations scatter the
radar signals and prevent direct interfering reflections.
Vessel installations
20 VEGAPULS 68 •4…20 mA/HART two-wire
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36535-EN-100607
Fig.12:Cover smooth profiles with deflectors
If there are agitators in the vessel,a false signal suppression should be
carried out with the agitators in motion.This ensures that the interfering
reflections from the agitators are saved with the blades in different
positions.
Fig.13:Agitators
Large material heaps are detected with several sensors,which can be
mounted on e.g.traverse cranes.For this type of application,it is best
to orient the sensor toward the solid surface.Amutual infuence of the
sensors is not possible.
Agitators
Material heaps
VEGAPULS 68 •4…20 mA/HART two-wire 21
4Mounting
36535-EN-100607
Fig.14:Radar sensors on traverse crane
Information:
Keep in mind that for these applications,the sensors are designed for
relatively slow level changes.When using VEGAPULS 68 on a
movable bracket,the max.measuring rate must be observed (see
chapter "Technical data").
Instruments for a temperature range up to 250 °Cor up to 450 °Chave
a distance piece between process fitting and electronics housing.Ths
distance piece is used for thermal decoupling of the electronics
against high process temperatures.
Information:
The distance piece must only be incorporaed up to max.50 mm in the
vessel installation.Only then,a reliable temperature decoupling is
guaranteed.
Mounting in the vessel
insulation
22 VEGAPULS 68 •4…20 mA/HART two-wire
4Mounting
36535-EN-100607
max. 50 mm
(1.97")
1
2
3
Fig.15:Mounting of the instrument with insulated vessels.
1Electronics housing
2Distance piece
3Vessel insulation
For level measurements in concrete silos,the sensors are often
mounted in protective boxes.These boxes can be for example
metallic,closed subsurface enclosures.
Minimal amounts of stray radiation from the sensor can be reflected
and strengthened by the walls of the subsurface enclosures.In the
case of sensors with plastic housings,this can lead to coupling
disturbances.This is avoided by using a sensor with of aluminium or
stainless steel housing.
1 2
Fig.16:Mounting of the instrument in an subsurface enclosure
1Subsurface enclosure
2Concrete bottom
Installation in subsur-
face enclosures
VEGAPULS 68 •4…20 mA/HART two-wire 23
4Mounting
36535-EN-100607
The silo walls of multiple chamber silos are often made of profile walls,
such as e.g.profile sheeting,to ensure the required stability.If the
radar sensor is mounted very close to a heavily structured vessel wall,
considerable false reflections can be generated.Hence the sensor
should be mounted at a large distance from the separating wall.The
optimal mounting position is on the outer wall of the silo with the sensor
directed towards the emptying aperture in the silo center.
Fig.17:Installation of VEGAPULS 68 in multiple chamber silos
Mounting in multiple
chamber silo
24 VEGAPULS 68 •4…20 mA/HART two-wire
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36535-EN-100607
Fig.18:Orientation of VEGAPULS 68 for emptying in the silo center
To avoid strong buildup and dust in the antenna system,the sensor
should not be mounted directly at the dust extraction of the vessel.
In case of extreme dust in the antenna system,VEGAPULS 68 is
available with purging air connection.The air is distributed via
channels in the antenna system and keeps it virtually free of dust.
Fig.19:Purging air connection with horn antenna
Dust layers
VEGAPULS 68 •4…20 mA/HART two-wire 25
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36535-EN-100607
Fig.20:Purging air connection with parabolic antenna
The practice has shown that a pressure of approx.0.2…1bar
provides a sufficient air flow (see diagram in chapter "Technical data",
"Purging air connection".
26 VEGAPULS 68 •4…20 mA/HART two-wire
4Mounting
36535-EN-100607
5Connecting to power supply
5.1Preparing the connection
Always keep in mind the following safety instructions:
lConnect only in the complete absence of line voltage
lIf overvoltages are expected,install overvoltage arresters
Power supply and current signal are carried on the same two-wire
cable.The voltage supply range can differ depending on the
instrument version.
The data for power supply are specified in chapter "Technical data".
Provide a reliable separation between the supply circuit and the mains
circuits according to DIN VDE 0106 part 101.
Keep in mind the following additional influences on the operating
voltage:
lOutput voltage of the power supply unit can be lower under
nominal load (with a sensor current of 20.5mAor 22 mAin case of
fault message)
lInfluence of additional instruments in the circuit (see load values in
chapter "Technical data")
The signal conditioning instruments VEGAMET and VEGASCAN have
digital sensor recognition.When connecting VEGAPULS 68,an up-to-
date software version of the signal conditioning instrument is required
for the signal conditioning instrument.For a software update go to
"Software"under "www.vega.com/downloads".
The instrument is connected with standard two-wire cable without
screen.If electromagnetic interference is expected which is above the
test values of EN 61326 for industrial areas,screened cable should be
used.
Use cable with round cross-section.Acable outer diameter of 5…9mm
(0.2…0.35 in)ensures the seal effect of the cable gland.If you are
using cable with a different diameter or cross-section,exchange the
seal or use a suitable cable gland.
We generally recommend the use of screened cable for HART
multidrop mode.
With plastic housing,the NPT cable gland or the Conduit steel tube
must be screwed without grease into the threaded insert.
Max.torque for all housings see chapter "Technical data"
Safety instructions
Voltage supply
Connection to signal
conditioning instru-
ments
Connection cable
Cable gland ½NPT
VEGAPULS 68 •4…20 mA/HART two-wire 27
5Connecting to power supply
36535-EN-100607
If screened cable is necessary,connect the cable screen on both ends
to ground potential.In the sensor,the screen must be connected
directly to the internal ground terminal.The ground terminal on the
outside of the housing must be connected to the potential equalisation
(low impedance).
If potential equalisation currents are expected,the connection on the
processing side must be made via a ceramic capacitor (e.g.1nF,
1500 V). The low frequency potential equalisation currents are thus
suppressed,but the protective effect against high frequency interfer-
ence signals remains.
Warning:
Within galvanic plants as well as vessels with cathodic corrosion
protection there are considerable potential differences.Considerably
equalisation currents can be caused via the cable scrren when the
screen is earthed on both ends.To avoid this,the cable screen must
only connected to ground potential on one side of the switching
cabinet in such applications.The cable screen must not be connected
to the internal ground terminal in the sensor and the outer ground
terminal on the housing not to the potential equalisation!
Information:
The metal parts of the instrument (antenna,transmitter,concentric
tube,etc.) are conductive connected with the inner and outer ground
terminal on the housing.This connection exists either directly metallic
or with instruments with external electronics via the screen of the
special connection cable.You can find specifications to the potential
connections within the instrument in chapter "Technical data".
5.2Connection
The connection of the voltage supply and the signal output is carried
out via the spring-loaded terminals in the housing.
The connection to the indicating and adjustment module or to the
interface adapter is carried out via contact pins in the housing.
Proceed as follows:
1Unscrew the housing cover
2If an indicating and adjustment module is installed,remove it by
turning it slightly to the left.
3Loosen compression nut of the cable entry
4Remove approx.10 cm (4in)of the cable mantle,strip approx.
1cm (0.4in)of insulation from the ends of the individual wires
Cable screening and
grounding
Connection technology
Connection procedure
28 VEGAPULS 68 •4…20 mA/HART two-wire
5Connecting to power supply
36535-EN-100607
5Insert the cable into the sensor through the cable entry
Fig.21:Connection steps 5and 6
6Insert the wire ends into the terminals according to the wiring plan
Information:
Solid cores as well as flexible cores with cable end sleeves are
inserted directly into the terminal openings.In case of flexible cores
without end sleeves,press the terminal head with a small screwdriver;
the terminal opening is freed.When the screwdriver is released,the
terminal closes again.
7Check the hold of the wires in the terminals by lightly pulling on
them
8Connect the screen to the internal ground terminal,connect the
outer ground terminal to potential equalisation
9Tighten the compression nut of the cable entry.The seal ring must
completely encircle the cable
10 Screw the housing cover on
The electrical connection is finished.
Information:
The terminal block is pluggable and can be removed from the
electronics.For this purpose,lift the terminal block with a small
screwdriver and pull it out.When inserting the terminal block again,
you should hear it snap in.
VEGAPULS 68 •4…20 mA/HART two-wire 29
5Connecting to power supply
36535-EN-100607
5.3Wiring plan,single chamber housing
The following illustration applies to the non-Ex as well as to the Ex-ia
version.
5
12
+
( ) (-)
6 7 8
4...20mA
2
3
4
1
Fig.22:Electronics and connection compartment with single chamber housing
1Voltage supply/Signal output
2For indicating and adjustment module or interface adapter
3For external indicating and adjustment unit
4Ground terminal for connection of the cable screen
5.4Wiring plan,double chamber housing
The following illustrations apply to the non-Ex as well as to the Ex-ia
version.
5 6 7 8
4...20mA
2
12
+
( ) (-)
11
Fig.23:Electronics compartment,double chamber housing
1Internal connection to the connection compartment
2For indicating and adjustment module or interface adapter
Electronics and connec-
tion compartment
Electronics compart-
ment
30 VEGAPULS 68 •4…20 mA/HART two-wire
5Connecting to power supply
36535-EN-100607
Information:
The connection of an external indicating and adjustment unit is not
possible with this double chamber housing.
4...20mA
2
3
12
+
( ) (-)
1
Fig.24:Connection compartment,double chamber housing
1Voltage supply/Signal output
2For indicating and adjustment module or interface adapter
3Ground terminal for connection of the cable screen
5.5Wiring plan with double chamber housing Ex d
5 6 7 8
12
+
( ) (-)
31
2
4...20mA
Fig.25:Electronics compartment,double chamber housing
1Internal connection to the connection compartment
2For indicating and adjustment module or interface adapter
3Internal connection to the plug connector for external indicating and
adjustment unit (optional)
Connection compart-
ment
Electronics compart-
ment
VEGAPULS 68 •4…20 mA/HART two-wire 31
5Connecting to power supply
36535-EN-100607
4...20mA
2
12
+
( ) (-)
1
Fig.26:Connection compartment double chamber housing Ex d
1Voltage supply/Signal output
2Ground terminal for connection of the cable screen
5.6Wiring plan -version IP 66/IP 68,1bar
+
-
1
2
Fig.27:Wire assignment fix connected connection cable
1brown (+)and blue (-) to power supply or to the processing system
2Shielding
5.7Switch on phase
After connecting the instrument to power supply or after a voltage
recurrence,the instrument carries out a self-check for approx.30
seconds:
lInternal check of the electronics
lIndication of the instrument type,the software version as well as
the measurement loop name
lOutput signal jumps to the adjusted error current until a plausible
measured value is found
Then the corresponding current is outputted to the signal cable.The
value corresponds to the actual level as well as the settings already
carried out,e.g.factory setting.
Connection compart-
ment
Wire assignment con-
nection cable
32 VEGAPULS 68 •4…20 mA/HART two-wire
5Connecting to power supply
36535-EN-100607
6Set up with the indicating and adjustment
module
6.1Insert indicating and adjustment module
The indicating and adjustment module can be inserted into the sensor
and removed again at any time.It is not necessary to interrupt the
power supply.
Proceed as follows:
1Unscrew the housing cover
2Place the indicating and adjustment module in the desired position
on the electronics (you can choose any one of four different
positions -each displaced by 90°)
3Press the indicating and adjustment module onto the electronics
and turn it to the right until it snaps in.
4Screw housing cover with inspection window tightly back on
Removal is carried out in reverse order.
The indicating and adjustment module is powered by the sensor,an
additional connection is not necessary.
Fig.28:Insert indicating and adjustment module
Note:
If you intend to retrofit the instrument with an indicating and adjustment
module for continuous measured value indication,a higher cover with
an inspection glass is required.
Mount/Dismount indica-
ting and adjustment mo-
dule
VEGAPULS 68 •4…20 mA/HART two-wire 33
6Set up with the indicating and adjustment module
36535-EN-100607
6.2Adjustment system
1
2
Fig.29:Indicating and adjustment elements
1LC display
2Adjustment keys
l[OK]key:
-Move to the menu overview
-Confirm selected menu
-Edit parameter
-Save value
l[->]key:
-Presentation change measured value
-Select list entry
-Select editing position
l[+]key:
-Change value of the parameter
l[ESC]key:
-interrupt input
-Jump to next higher menu
The sensor is adjusted via the four keys of the indicating and
adjustment module.The LC display indicates the individual menu
items.The functions of the individual keys are shown in the above
illustration.Approx.10 minutes after the last pressing of a key,an
automatic reset to measured value indication is triggered.Any values
not confirmed with [OK]will not be saved.
Key functions
Adjustment system
34 VEGAPULS 68 •4…20 mA/HART two-wire
6Set up with the indicating and adjustment module
36535-EN-100607
6.3Parameter adjustment
With the parameter adjustment,the instrument is adapted to the
application conditions.The parameter adjustment is carried out via an
adjustment menu.
Information:
In this operating instructions manual,the instrument-specific param-
eters are described.Further general parameters are described in the
operating instructions manual "Indicating and adjustment module".
The main menu is divided into five areas with the following functions:
Setup:Settings,for example,to measurement loop name,medium,
application,vessel,adjustment,signal output
Display:Language setting,settings for the measured value indication
as well as lighting
Diagnosis:Information,for example to the instrument status,pointer,
reliability,simulation,echo curve
Further settings:Unit,false signal suppression,linearisation curve,
reset,date/time,reset,HART mode
Info:Instrument name,hardware and software version,calibration
date,instrument features
In the main menu point "Setup",the individual submenu points should
be selected subsequently and provided with the correct parameters to
ensure the optimum adjustment of the measurement.The procedure is
described in the following.
Setup
Setup
Each medium has different reflection properties.With liquids,further
interfering factors are fluctuation product surface and foam generation.
With bulk solids,these are dust generation,material cone and
additional echoes from the vessel wall.
To adapt the sensor to these different measuring conditions,the
selection "Liquid"or "Bulk solid"should be made in this menu item.
Main menu
Setup/Medium
VEGAPULS 68 •4…20 mA/HART two-wire 35
6Set up with the indicating and adjustment module
36535-EN-100607
Through this selection,the sensor is adapted perfectly to the product
and measurement reliability,particularly in products with poor
reflective properties,is considerably increased.
Enter the requested parameters via the appropriate keys,save your
settings with [OK]and jump to the next menu item with the [ESC]and
the [->]key.
In addition to the medium,also the application or the application place
can influence the measurement.
With this menu item,the sensor can be adapted to the applications.
The adjustment possibilities depend on the selection "Liquid"or "Bulk
solid"under "Medium".
The following options are available when "Liquid"was selected:
Caution:
If in the vessel,there is a separation of liquids with different ε
r
value,for
example by condensation,the radar sensor can detect under certain
circumstances only the medium with the higher dielectric value.Keep
in mind that interfaces can cause faulty measurements.
If you want to measure the total height of both liquids reliably,please
contact our service department or use an instrument specially
designed for interface measurement.
Setup/Application
36 VEGAPULS 68 •4…20 mA/HART two-wire
6Set up with the indicating and adjustment module
36535-EN-100607
The selection "Standpipe"opens a new window in which the inner
diameter of the applied standpipe is entered.
The following options are available when "Bulk solid"is selected:
Through this selection,the sensor is adapted optimally to the
application or the location and measurement reliability under the
various basic conditions is increased considerably.
Enter the requested parameters via the appropriate keys,save your
settings with [OK]and jump to the next menu item with the [ESC]and
the [->]key.
With this selection,the operating range of the sensor is adapted to the
vessel height and the reliability with different frame conditions is
increased considerably.
Independent from this,the min.adjustment must be carried out.
Enter the requested parameters via the appropriate keys,save your
settings with [OK]and jump to the next menu item with the [ESC]and
the [->]key.
Also the vessel form can influence the measurement apart from the
medium and the application.To adapt the sensor to these measure-
ment conditions,this menu item offers you different options for vessel
bottom and ceiling in case of certain applications.
Setup/Vessel height,
measuring range
Setup/Vessel form
VEGAPULS 68 •4…20 mA/HART two-wire 37
6Set up with the indicating and adjustment module
36535-EN-100607
Enter the requested parameters via the appropriate keys,save your
settings with [OK]and jump to the next menu item with the [ESC]and
the [->]key.
As a radar sensor is a distance measuring instrument,the distance
from the sensor to the product surface is measured.To have the real
product level displayed,an allocation of the measured distance to the
percentage height must be made.To carry out this adjustment,the
distance is entered with full and empty vessel.If these values are not
known,an adjustment with the distance values,e.g.10 %and 90 %is
also possible.Starting point for these distance specifications is always
the seal surface of the thread or flange.By means of these settings,
the real level is calculated.
The real product level during this adjustment is not important,because
the min./max.adjustment is always carried out without changing the
product level.These settings can be made ahead of time without the
instrument having to be installed.
Proceed as follows:
1Select the menu item "Setup"with [->]and confirm with [OK].Now
select with [->]the menu item "Min.adjustment"and confirm with
[OK].
2Edit the percentage value with [OK]and set the cursor to the
requested position with [->].
3Set the requested percentage value with [+]and save with [OK].
The cursor jumps now to the distance value.
4Enter the suitable distance value in m for the empty vessel (e.g.
distance from the sensor to the vessel bottom)corresponding to
the percentage value.
5Save settings with [OK]and move with [ESC]and [->]to the max.
adjustment.
Setup/Adjustment
Setup/Min.adjustment
38 VEGAPULS 68 •4…20 mA/HART two-wire
6Set up with the indicating and adjustment module
36535-EN-100607
Proceed as follows:
1Select with [->]the menu item max.adjustment and confirm with
[OK].
2Prepare the percentage value for editing with [OK]and set the
cursor to the requested position with [->].
3Set the requested percentage value with [+]and save with [OK].
The cursor jumps now to the distance value.
4Enter the appropriate distance value in m (corresponding to the
percentage value)for the full vessel.Keep in mind that the max.
level must lie below the min.distance to the antenna edge.
5Save settings with [OK]
Further settings
The following circumstances cause interfering reflections and can
influence the measurement:
lHigh sockets
lVessel installations such as struts
lAgitators
lBuildup or welded joints on vessel walls
Note:
Afalse signal suppression detects,marks and saves these false
signals so that they are no longer taken into account for level
measurement.
This should be done with a low level so that possible interfering
reflections can be detected.
Proceed as follows:
1Select the menu item "Additional settins"with [->]and confirm with
[OK].With [->]you have to select the menu item "False signal
suppression"and confirm with [OK].
Setup/Max.adjustment
Further set-
tings/False sig-
nal suppression
VEGAPULS 68 •4…20 mA/HART two-wire 39
6Set up with the indicating and adjustment module
36535-EN-100607
2Confirm again with [OK].
3Confirm again with [OK]and select with [->]"Create new".
4Confirm again with [OK]and enter the actual distance from the
sensor to the product surface.
5All interfering signals in this section are detected by the sensor
and stored after confirming with [OK].
Note:
Check the distance to the product surface,because if an incorrect (too
large)value is entered,the existing level will be saved as false signal.
The filling level would then no longer be detectable in this area.
Alinearization is necessary for all vessels in which the vessel volume
does not increase linearly with the level -e.g.in a horizontal cylindrical
or spherical tank -and 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.By activating the appropriate curve,
the volume percentage of the vessel is displayed correctly.If the
volume should not be displayed in percent but e.g.in l or kg,a scaling
can be also set in the menu item "Display".
Further settings/Linear-
ization curve
40 VEGAPULS 68 •4…20 mA/HART two-wire
6Set up with the indicating and adjustment module
36535-EN-100607
Enter the requested parameters via the appropriate keys,save your
settings and jump to the next menu item with the [ESC]and [->]key.
Caution:
If the instrument is used as part of an overfill protection system
according to WHG (Water Resources Act), please note the following:
If a linearisation curve is selected,the measuring signal is no longer
compulsorily linear proportional to the level.This must be taken into
consideration by the user,particularly when adjusting the switching
point on the level switch.
With a reset,all settings despite a few exceptions will be reset.The
exceptions are:PIN,language,lighting,SIL and HART mode.
The following reset functions are available:
Delivery status:Restoring the parameter settings at the time of
shipment from the factory incl.the order-specific settings.Acreated
false signal suppression,user-programmable linearization curve as
well as the measured value memory will be deleted.
Basic settings:Resetting the parameter settings incl.special and
laboratory parameters to the default values of the respective instru-
ment.Acreated false signal suppression,user programmable
linearization curve as well as the measured value memory will be
deleted.
Setup:Resetting of the parameter settings to the default values of the
respective instrument in the menu item Setup.Order-related settings
remain but are not taken over into the current parameters.User-
generated false signal suppression,user-programmed linearization
curve,measured value memory as well as event memory remain
untouched.The linearization is set to linear.
False signal suppression:Deleting a previously created false signal
suppression.The false signal suppression created in the factory
remains active.
Additional settings -Re-
set
VEGAPULS 68 •4…20 mA/HART two-wire 41
6Set up with the indicating and adjustment module
36535-EN-100607
Peak values distance:Resetting the measured min.and max.
distances to the actual measured value.
The following table shows the default values of the instrument.
Depending on the instrument version,not all menu items are available
or differently assigned:
Menu Menu item Default value
Setup Measurement
loop name
Sensor
Medium Liquid/Water
Bulk solids/Crushed stones,gravel
Application Storage tank
Silo
Vessel form Vessel bottom,dished boiler end
Vessel top,dished boiler end
Vesell height/
Measuring range
Recommended measuring range,see
"Technical data"in the supplement
Min.adjustment Recommended measuring range,see
"Technical data"in the supplement
Max.adjustment 0,000 m(d)
Damping 0.0s
Current output
mode
4…20 mA,<3.6mA
Current output
Min./Max.
Min.current 3.8mA,max.current
20.5mA
Lock operation Released
Display Language According to order
Displayed value Distance
Display unit m
Scaling size Volume
l
Scaling 0.00 lin %,0l
100.00 lin %,100 l
Lighting Switched off
Further settings Distance unit m
Temperature unit °C
Probe length Length of the standpipe Ex factory
42 VEGAPULS 68 •4…20 mA/HART two-wire
6Set up with the indicating and adjustment module
36535-EN-100607
Menu Menu item Default value
Linearisation cur-
ve
linear
HART mode Standard
Address 0
6.4Saving the parameter adjustment data
It is recommended noting the adjusted data,e.g.in this operating
instructions manual and archive them afterwards.They are hence
available for multiple use or service purposes.
If the instrument is equipped with an indicating and adjustment
module,the data in the sensor can be saved in the indicating and
adjustment module.The procedure is described in the operating
instructions manual "Indicating and adjustment module"in the menu
item "Copy sensor data".The data remain there permanently even if
the sensor power supply fails.
The following data or settings for adjustment of the indicating and
adjustment module are saved:
lAll data of the menu "Setup"and "Display"
lIn the menu "Additional settings"the items "Distance unit,
temperature unit and linearization"
lThe values of the user programmable linearization curve
The function can be also used to transfer settings from one instrument
to another instrument of the same type.If it is necessary to exchange a
sensor,then the indicating and adjustment module is inserted into the
replacement instrument and the data are also written into the sensor
via the menu item "Copy sensor data".
VEGAPULS 68 •4…20 mA/HART two-wire 43
6Set up with the indicating and adjustment module
36535-EN-100607
7Setup with PACTware
7.1Connecting the PC
3
1
2
Fig.30:Connection of the PC directly to the sensor via the interface adapter
1USB cable to the PC
2Interface adapter VEGACONNECT 4
3Sensor
Information:
The interface adapter VEGACONNECT 3or additional previous
versions are not suitable for connection to the sensor.
Via the interface adapter
directly on the sensor
44 VEGAPULS 68 •4…20 mA/HART two-wire
7Setup with PACTware
36535-EN-100607
1
2 4
3
OPEN
TWIST
USB
LOCK
Fig.31:Connecting the PC via HART to the signal cable
1Sensor
2HART resistance 250 Ω (optional depending on processing)
3Connection cable with 2mm pins and terminals
4Processing system/PLC/Voltage supply
5Interface adapter,for example VEGACONNECT 4
Note:
With power supply units with integrated HART resistance (internal
resistance approx.250 Ω), an additional external resistance is not
necessary.This applies,e.g.to the VEGA instruments VEGATRENN
149A,VEGAMET 381,VEGAMET 391.Common Ex separators are
also usually equipped with a sufficient current limitation resistance.In
such cases,the interface converter can be connected parallel to the
4…20 mAcable (in the previous illustration dashed).
7.2Parameter adjustment with PACTware
As an alternative to the indicating and adjustment module,the sensor
can also be configured via a Windows PC.For this purpose,the
configuration software PACTware and a suitable instrument driver
(DTM)according to the FDT standard are required.The actual
PACTware version as well as all available DTMs are compiled in a
DTM Collection.Furthermore the DTMs can be integrated in other
frame applications according to the FDT standard.
Note:
To ensure that all instrument functions are supported,you should
always use the latest DTM Collection.Furthermore,not all described
functions are included in older firmware versions.The latest instrument
software can be also downloaded from our homepage.Adescription of
the update procedure is also available in the Internet.
Further setup steps are described in the operating instructions manual
"DTM Collection/PACTware"attached to each DTM Collection and
which can also be downloaded from the Internet.Detailed descriptions
are available in the online help of PACTware and the DTMs.
Via the interface adapter
and HART
Prerequisites
VEGAPULS 68 •4…20 mA/HART two-wire 45
7Setup with PACTware
36535-EN-100607
Fig.32:Example of a DTM view
All device DTMs are available as a free-of-charge standard version
and as a full version that must be purchased.In the standard version,
all functions for complete setup are already included.An assistent for
simple project configuration simplifies the adjustment considerably.
Saving/printing the project as well as import/export functions are also
part of the standard version.
In the full version there is also an extended print function for complete
project documentation as well as a save function for measured value
and echo curves.In addition,there is a tank calculation program as
well as a multiviewer for display and analysis of the saved measured
value and echo curves.
The standard version is available as a free-of-charge download under
http://www.vega.com.The full version is available on CD from the
agency serving you.
7.3Saving the parameter adjustment data
We recommend documenting or saving the parameter adjustment data
via PACTware.That way they are available for multiple use or service
purposes.
Standard/Full version
46 VEGAPULS 68 •4…20 mA/HART two-wire
7Setup with PACTware
36535-EN-100607
8Set up with other systems
8.1DD adjustment programs
Device descriptions as Enhanced Device Description (EDD)are
available for DD adjustment programs such as for example AMS™
and PDM.
Afree-of-charge download of these files is available via Internet.Move
via www.vega.com and "Downloads"to "Software".
8.2Communicator 375,475
Device descriptions for the instrument are available as DD or EDD for
parameter adjustment with the Field Communicator 375 or 475.
Afree-of-charge download of these files is available via Internet.Move
via www.vega.com and "Downloads"to "Software".
VEGAPULS 68 •4…20 mA/HART two-wire 47
8Set up with other systems
36535-EN-100607
9Diagnosis,fault rectification and service
9.1Maintenance
When the device is used correctly,no maintenance is required in
normal operation.
9.2Measured value and event memory
The instrument has an integrated measured value memory with time
stamp.Up to 100,000 measured values can be saved in the sensor in
a ringing memory.Each entry contains date/time as well as the
respective measured value.
Stored values are for exmaple sensor value,level,current value,
reliability and electronics temperature.The data remain even in case of
voltage interruption.
Via a PC with PACTware/DTM or the control system with EDD,the
requested values and recording conditions are stipulated.Data are
also read our or reset.
The instrument has an integrated event memory with time stamp.Up to
500 events which cannot be deleted are stored in the sensor.Each
entry contains date/time,event time,event description and value.
Event types are for example modification of a parameter,status and
error messages as well as switch on and switch offtimes.The data
remain also in case of voltage interruption.
The data are read out via a PC with PACTware/DTM or the control
system with EDD.
The instrument has an integrated echo curve memory in which echo
curves can be stored for diagnosis purposes.The echo curves are
stored with date and time as well as the corresponding echo data.The
data remain even in case of voltage interruption.The memory is
divided ito two sections:
Echo curve of the setup:here you can store the echo curve as a
reference during setup.This echo curve can be used for example to
detect changes of the installation conditions or buildup on the antenna.
Echo curve memory:in this memory section up to 10 echo curves
can be stored in the sensor in a ring buffer.
Via a PC with PACTware/DTM or the control system with EDD,the
requested values and recording conditions are stipulated.Data are
also read out or reset.The echo curve during the setup can be stored
alternatively also via the indicating and adjustment module.
Measured value memory
Event memory
Echo curve memory
48 VEGAPULS 68 •4…20 mA/HART two-wire
9Diagnosis,fault rectification and service
36535-EN-100607
9.3Error messages according to NE 107
The instrument has a self-monitoring and diagnosis according to
NE 107 and VDI/VDE 2650.The following status messages can be
outputted:
Failure:Due to a malfunction in the instrument,a failure message is
outpuuted.This status message is activated in the delivery status and
cannot be deactivated by the user.
Function check:The instrument is in operation,the measured value is
temporarily invalid (for example during simulation). This status
message is activatedin the delivery status and cannot be deactivated
by the user.
Out of specification:The measured value is unstable because the
instrument specification was exceeded (for example electronics
temperature). This status messae is deactivated in the delivery status
and must be activated via PACTware/DTM and PC.
Maintenance:Due to external influences,the instrument function is
limited.The measurement is influence,however the measured value is
still valid.Plan instrument for maintenance because failure must be
expected in the near future (for example due to buildup). This status
message is activated in the delivery status and must be activated via
PACTware/DTM and PC.
Error codes and text messages are dispayed via the indicating and
adjustment module,PACTware/DTM as well as EDD in the control
system.Information to the error statstics is displayed in the menu
diagnosis under Device status"in the indicating and adjustment
module as well as PACTware/DTM.
The following table shows the codes and text messages of the status
message "Failure"and provides information on causes as well as
corrective measures.
Code
Text mes-
sage
Cause Removal
F013
no measured
value availab-
le
lSensor does not detect an
echo during operation
lAntenna system contami-
nated or defective
lCheck or correct installa-
tion and/or parameter ad-
justment
lClean or exchange process
component or antenna
F017
Adjustment
span too small
lAdjustment not within spe-
cification
lChange adjustment accor-
ding to the limit values
(difference between min.
and max.≥10 mm)
Failure (failure)
VEGAPULS 68 •4…20 mA/HART two-wire 49
9Diagnosis,fault rectification and service
36535-EN-100607
Code
Text mes-
sage
Cause Removal
F025
Error in the li-
nearization
table
lIndex markers are not
continuously rising,for
examle unlogical value
pairs
lCheck linearization table
lDelete table/Create new
F036
No operable
software
lFailed or interrupted soft-
ware update
lRepeat software update
lCheck electronics version
lExchange the electronics
lSend instrument for repair
F040
Error in the
electronics
lHardware defect lExchange the electronics
lSend instrument for repair
F080 lGeneral software error lSeparate operating voltage
briefly
F105
Determine
measured va-
lue
lThe instrument is still in the
start phase,the measured
value could not yet be
determined
lWait for the warm-up phase
lDuration depending on the
version and parameter ad-
justment up to approxima-
tely 3min.
F125
Unpermissible
electronics
temperature
lTemperature of the elect-
ronics in the not specified
section
lCheck ambient temperatu-
re
lIsolate electronics
lUse instrument with higher
temperature range
F260
Error in the
calibration
lError in the calibration car-
ried out in the factory
lError in the EEPROM
lExchange the electronics
lSend instrument for repair
F261
Error in the
configuration
lError during setup
lFalse signal suppression
faulty
lError when carrying out a
reset
lRepeat setup
lRepeat reset
F264
Installation/S-
etup error
lAdjustment not within the
vessel height/measuring
range
lMax.measuring range of
the instrument not suffici-
ent
lCheck or correct installa-
tion and/or parameter ad-
justment
lUse an instrument with
bigger measuring range
F265
Measurement
function dis-
turbed
lSensor does no longer
carry out a measurement
lOperating voltage too low
lCheck operating voltage
lCarry out a reset
lSeparate operating voltage
briefly
50 VEGAPULS 68 •4…20 mA/HART two-wire
9Diagnosis,fault rectification and service
36535-EN-100607
The following table shows the codes and text messages of the status
message "Function check"and provides information on causes as well
as corrective measures.
Code
Text mes-
sage
Cause Removal
C700
Simulation
lSimulation active lFinish simulation
lWait for the automatic end
after 60 mins.
The following table shows the codes and text messages of the status
message "Out of specification"and gives instructions for the reason
and removal.
Code
Text mes-
sage
Cause Removal
S600
Unpermissible
electronics
temperature
lTemperature of the elect-
ronics in the not specified
section
lCheck ambient temperatu-
re
lIsolate electronics
lUse instrument with higher
temperature range
The following table shows the codes and text messages of the status
message "Maintenance"and provides information on causes as well
as corrective measures.
Code
Text mes-
sage
Cause Removal
M500
Error with the
reset delivery
status
lWith the reset to delivery
status,the data could not
be restored
lRepeat reset
lLoad XML file with sensor
data into the sensor
M501
Error in the
non-active li-
nearization
table
lHardware error EEPROM lExchange the electronics
lSend instrument for repair
M502
Error in the
diagnosis me-
mory
lHardware error EEPROM lExchange the electronics
lSend instrument for repair
Function check
Out of specification
Maintenance (mainte-
nance requirement)
VEGAPULS 68 •4…20 mA/HART two-wire 51
9Diagnosis,fault rectification and service
36535-EN-100607
Code
Text mes-
sage
Cause Removal
M503
Reliability too
low
lThe echot/noise ratio is the
small for a reliable measu-
rement
lCheck installation and pro-
cess conditions
lClean the antenna
lChange polarisation direc-
tion
lUse instrument with higher
sensitivity
M504
Error on an
device inter-
face
lHardware defect lCheck connections
lExchange the electronics
lSend instrument for repair
9.4Rectify malfunctions
The operator of the system is responsible for taking suitable measures
to remove interferences.
The first measures to be taken are to check the output signal as well as
to evaluate the error messages via the indicating and adjustment
module.Further comprehensive diagnostics can be carried out on a
PC with the software PACTware and the suitable DTM.In many cases,
the causes can be determined this way and faults rectified.
Connect a handmultimeter in the suitable measuring range according
to the wiring plan.The following table describes possible errors in the
current signal and helps to remove them:
Error Cause Removal
4…20 mAsignal
not stable
Level fluctuations Set damping via the indicating and
adjustment module
4…20 mAsignal
missing
Electrical con-
nection faulty
Check connection according to chap-
ter "Connection steps"and if ne-
cessary,correct according to chapter
"Wiring plan"
Voltage supply
missing
Check cables for breaks;repair if
necessary
Operating voltage
too low or load
resistance too
high
Check,adapt if necessary
Reaction when malfunc-
tions occur
Fault rectification
Checking the 4…20 mA
signal
52 VEGAPULS 68 •4…20 mA/HART two-wire
9Diagnosis,fault rectification and service
36535-EN-100607
Error Cause Removal
Current signal
greater than 22 mA
or less than
3.6mA
Oscillator in the
sensor defective
Exchange the instrument or send it in
for repair
Depending on the failure reason and measures taken,the steps
described in chapter "Set up"must be carried out again,if necessary.
However,should these measures not be successful,call the VEGA
service hotline in urgent cases under the phone no.+49 1805 858550.
The hotline is available to you 7days a week round-the-clock.Since
we offer this service world-wide,the support is only available in the
English language.The service is free of charge,only the standard
telephone costs will be charged.
9.5Exchanging the electronics module
If the electronics module is defective,it can be replaced by the user.
InEx applications only one instrument and one electronics module with
respective Ex approval may be used.
If there is no electronics module available on site,the electronics
module can be ordered via the agent serving you.The electronics
modules are adapted to the respective sensor and differ in the signal
output or the voltage supply.
The new electronics module must be loaded with the default settings
of the sensor.These are the options:
lIn the factory
lOr on site by the user
In both cases,the serial number of the sensor is needed.The serial
numbers are stated on the type label of the instrument,inside the
housing as well as on the delivery note.
When loading on site,first of all the order data must be downloaded
from the Internet (see operating instructions manual "Oscillator").
9.6Software update
The following components are required to update the sensor software:
lSensor
lVoltage supply
lInterface adapter VEGACONNECT 4
lPC with PACTware
Reaction after fault rec-
tification
24 hour service hotline
VEGAPULS 68 •4…20 mA/HART two-wire 53
9Diagnosis,fault rectification and service
36535-EN-100607
lCurrent sensor software as file
Caution:
Keep in mind that a software update can lead to expiry of the
approvals.You can find detailed information on our homepage www.
vega.com.
At"www.vega.com/downloads"go to "Software".Select under "plics
sensors and instruments"the respective instrument series and
software version.Load the zip file via the right mouse key with "Save
target as"e.g.on the desktop of your PC.Extract all files available in
the zip file,e.g.to the desktop.
Connect the sensor to power supply and provide connection from the
PC to the instrument via the interface adapter.Start PACTware and
move via the menu Project to the VEGA project assistant.Select
"USB"and "Set instruments online".Provide connection to the sensor
via "Start"until the message "Search complete"is displayed.
Move in the PACTware menu bar to "Instrument data","Additional
functions"and "Software update".PACTware now checks the actual
hardware and software version of the sensor and displays the data.
This process takes approx.60 s.
Push the button "Update software"and select the previously extracted
XML file.Then the software update can be started.The additional files
are installed automatically.Depending on the sensor,this procedure
lasts approximately 15 min.
9.7How to proceed in case of repair
If a repair is necessary,please proceed as follows:
You can download a return form (23 KB)from our Internet homepage
www.vega.com under:"Downloads -Forms and certificates -Repair
form".
By doing this you help us carry out the repair quickly and without
having to call back for needed information.
lPrint and fill out one form per instrument
lClean the instrument and pack it damage-proof
lAttach the completed form and,if need be,also a safety data
sheet outside on the packaging
lPlease ask the agency serving you for the address of your return
shipment.You can find the competent agency on our website
www.vega.com.
Load sensor software to
PC
Prepare update
Load software into sen-
sor
54 VEGAPULS 68 •4…20 mA/HART two-wire
9Diagnosis,fault rectification and service
36535-EN-100607
10 Dismounting
10.1Dismounting steps
Warning:
Before dismounting,be aware of dangerous process conditions such
as e.g.pressure in the vessel,high temperatures,corrosive or toxic
products etc.
Take note of chapters "Mounting"and "Connecting to power supply"
and carry out the listed steps in reverse order.
10.2Disposal
The instrument consists of materials which can be recycled by
specialised recycling companies.We use recyclable materials and
have designed the electronics to be easily separable.
WEEE directive 2002/96/EG
This instrument is not subject to the WEEE directive 2002/96/EG and
the respective national laws.Pass the instrument directly on to a
specialised recycling company and do not use the municipal collecting
points.These may be used only for privately used products according
to the WEEE directive.
Correct disposal avoids negative effects to persons and environment
and ensures recycling of useful raw materials.
Materials:see chapter "Technical data"
If you have no possibility to dispose of the old instrument
professionally,please contact us concerning return and disposal.
VEGAPULS 68 •4…20 mA/HART two-wire 55
10 Dismounting
36535-EN-100607
11 Supplement
11.1Technical data
General data
316Lcorresponds to 1.4404 or 1.4435
Materials,wetted parts
-Process fitting 316L,Hastelloy C22,Monell Alloy
-Process seal On site (instruments with thread:Klingersil C-4400
is attached)
-Antenna 316L,Hastelloy C22,Tantalum,316Lelectropol-
ished,stainless steel investment casting 1.4848,
Monell Alloy,316L Safecoat coated
-Antenna impedance cone PTFE (TFM 1600 PTFE), PP,PEEK,ceramic
(99.7%Al
2
O
3
)
-seal,antenna system FKM (Viton), FFKM (Kalrez 6375), FFKM (Kal-
rez 2035), FFKM (Kalrez 6230 -FDA), graphite
(99.9%)
Materials,non-wetted parts
-Housing plastic plastic PBT (Polyester)
-Aluminium die-casting housing Aluminium die-casting AlSi10Mg,powder-coated -
basis:Polyester
-Stainless steel housing 316L
-Seal between housing and housing
cover
NBR (stainless steel housing,investment casting),
silicone (Aluminium/plastic housing,stainless steel
housing,electro-polished)
-Inspection window in housing cover
(optional)
Polycarbonate
-Ground terminal 316L
Process fittings
-Pipe thread,cylindrical (ISO 228 T1)G¾A,G1½A,G2A
-American pipe thread,tapered 1½NPT,2NPT
-Flanges DIN from DN 25,ANSI from 1"
Weights
-Instrument (depending on housing,
process fitting and antenna)
approx.2…17.2kg (4.409 …37.92 lbs)
-Antenna extension 1.6kg/m(1.1lbs/ft)
Length antenna extension max.5.85 m(19.19 ft)
Torque for NPT cable glands and Conduit tubes
-Housing plastic max.10 Nm(7.376 lbf ft)
-Aluminium/Stainless steel housing max.50 Nm(36.88 lbf ft)
56 VEGAPULS 68 •4…20 mA/HART two-wire
11 Supplement
36535-EN-100607
Input variable
Measured variable The measured quantity is the distance between
process fitting of the sensor and product surface.
The reference plane is the seal surface on the
hexagon or the lower side of the flange.
3
42
1
Fig.33:Data of the input variable
1Reference plane
2Measured variable,max.measuring range
3Antenna length
4Useful measuring range
Max.measuring range 75 m(246.1ft)
Recommended meas.range depending on the antenna diameter
-ø40 mm (1.575 in)up to 15 m(49.21 ft)
-ø48 mm (1.89 in)up to 20 m(65.62 ft)
-ø75 mm (2.953 in)up to 40 m(131.2ft)
-ø95 mm (3.74 in)up to 50 m(164 ft)
-Parabolic antenna up to 75 m(246.1ft)
Output variable
Output signal 4…20 mA/HART
Cycle time measuring cycle approx.
-Standard electronics 0.5s
-Electronics with increased sensitivity 1s
Signal resolution 0.3µA
Residual ripple ±0.4µA
Failure signal current output (adjustable)mA-value unchanged 20.5mA,22 mA,<3.6mA
Max.output current 22 mA
Starting current ≤3.6mA;≤10 mAfor 5ms after switching on
VEGAPULS 68 •4…20 mA/HART two-wire 57
11 Supplement
36535-EN-100607
Load see load diagram under Power supply
Damping (63 %of the input variable)0…999 s,adjustable
HART output values according to HART 7.01)
-PV (Primary Value)Distance to the level
-SV (Secondary Value)Level as percentage value
-TV (Third Value)Linearised percentage value
-QV (Fourth Value)Scaled measured value
Resolution,digital <1mm (0.039 in)
Accuracy (similar to DIN EN 60770-1)
Process reference conditions according to DIN EN 61298-1
-Temperature +18 …+30 °C(+64 …+86 °F)
-Relative humidity 45 …75 %
-Air pressure 860 …1060 mbar/86 …106 kPa(12.5…15.4psig)
Installation reference conditions
-Min.distance to installations >200 mm (7.874 in)
-Reflector Corner reflector
-False reflections Largest false echo 20 dBsmaller than the useful
echo
Deviation with liquids See following diagrams
1,0 m (3.28 ft)
10 mm (0.394 in)
2 mm (0.079 in)
- 2 mm (- 0.079 in)
- 10 mm (- 0.394 in)
0
1 2 3
Fig.34:Deviation under reference conditions
1Reference plane
2Antenna edge
3Recommended measuring range
Reproducibility ≤ ±1mm
Deviation with bulk solids The values are considerably application-depend-
ent.Firm specifications are hence not possible.
1)Default values,can be assigned individually
58 VEGAPULS 68 •4…20 mA/HART two-wire
11 Supplement
36535-EN-100607
Deviation under EMC influence ≤ ±30 mm
Variables influencing measurement accuracy
Temperature drift ±0.03 %/10 Krelating to the 16 mAspan max.
±0.3%
Temperature drift -Digital output ±3mm/10 Krelating to the max.measuring range
or max.10 mm
Deviation on the current output by analogue/
digital conversion
<±15 µA
Deviation on the current output by strong,
high frequency electromagnetic fields within
EN 61326
<±100 µA
Additional deviation through strong,high
frequency electromagnetic fields acc.to EN
61326
<±50 mm
Characteristics and performance data
Frequency K-band (26 GHz technology)
Beam angle2)
-Horn antenna ø40 mm (1.575 in)22°
-Horn antenna ø48 mm (1.89 in)18°
-Horn antenna ø75 mm (2.953 in)10°
-Horn antenna ø95 mm (3.74 in)8°
-Parabolic antenna 4°
Step response time3)>1s(dependent on the parameter setting)
Max.level change 1m/min.
Emitted HF power of the antenna system
-Pulse peak power <10 mW
-Pulse duration <2ns
-Average power <25 µW
-Average power with 1m distance <1µW/cm²
Ambient conditions
Ambient,storage and transport temperature -40 …+80 °C(-40 …+176 °F)
Process conditions
For the process conditions,you also have to note the specifications on the type label.Always the
lowest value is applicable.
2)Outside the specified beam angle,the energy of the radar signal has a level
of -3dB(50 %)
3)Time span after a sudden level change until the output signal has taken for
the first time 90 %of the final value (IEC 61298-2).
VEGAPULS 68 •4…20 mA/HART two-wire 59
11 Supplement
36535-EN-100607
Seal Antenna impedance co-
ne
Process temperature (measured on the process
fitting)
FKM (Viton)PFFE -40 …+130 °C(-40 …+266 °F)
PFFE -20 …+200 °C(-4…+392 °F)
PP -40 …+80 °C(-40 …+176 °F)
PEEK -40 …+200 °C(-40 …+392 °F)
FFKM (Kalrez 6375)PFFE -20 …+130 °C(-4…+266 °F)
PFFE -20 …+200 °C(-4…+392 °F)
PP -15 …+80 °C(+5…+176 °F)
PEEK -20 …+250 °C(-4…+482 °F)
FFKM (Kalrez 2035)PFFE -15 …+130 °C(5…+266 °F)
PTFE -15 …+200 °C(5…+392 °F)
PEEK -15 …+210 °C(5…+410 °F)
FFKM (Kalrez 6230)PFFE -15 …+130 °C(5…+266 °F)
PTFE -15 …+200 °C(5…+392 °F)
PEEK -15 …+250 °C(5…+482 °F)
Graphite Ceramic -200 …+450 °C(-328 …+842 °F)
Vessel pressure -horn antenna
-Antenna impedance cone PTFE -1…40 bar/-100 …4000 kPa(-14.5…580 psi)
-Antenna impedance cone PEEK -1…100 bar/-100 …10000 kPa(-14.5…1450 psi)
-Antenna impedance cone ceramic -1…160 bar/-100 …16000 kPa(-14.5…2320 psi)
Vessel pressure -parabolic antenna -1…6bar/-100 …6000 kPa(-14.5…870 psi)
Vessel pressure relating to the flange nom-
inal stage
see supplementary instructions manual "Flanges
according to DIN-EN-ASME-JIS"
Vibration resistance4)
-Horn antenna mechanical vibrations with 4g and 5…100 Hz
-Parabolic antenna mechanical vibrations with 1g and 5…100 Hz
Data on rinsing air connection
Pressure max.6bar (87.02 psig)
Air quantity without reflux valve
-0.2bar (2.9psig)2.0m
3
/h
-0.5bar (7.25 psig)3.5m
3
/h
4)Tested according to the guidelines of German Lloyd,GL directive 2.
60 VEGAPULS 68 •4…20 mA/HART two-wire
11 Supplement
36535-EN-100607
-1bar (14.5psig)4.5m
3
/h
-1.5bar (21.76 psig)5m
3
/h
-2bar (29.0psig)5.5m
3
/h
Thread G⅛A
Catch
-with non-ExDust protection cover of PE
-with ExThreaded plug of 316Ti
Reflux valve -unmounted (as option with non-Ex version,included in the scope of delivery with Ex
version)
-Material 316Ti
-Seal FKM (Viton), FFKM (Kalrez 6375)
-for tube diameter 6mm
-opening pressure 0.5bar (7.25 psig)
-Nominal pressure stage PN 250
Electromechanical data -version IP 66/IP 67 and IP 66/IP 68;0.2bar
Cable entry/plug5)
-Single chamber housing l1x cable gland M20 x1.5(cable:ø5…9mm),
1x blind stopper M20 x1.5
or:
l1x closing cap M20 x1.5;1x blind stopper
M20 x1.5
or:
l1x closing cap ½NPT,1x blind plug ½NPT
or:
l1x plug (depending on the version), 1x blind
stopper M20 x1.5
-Double chamber housing l1x cable entry M20 x1.5(cable:ø5…9mm),
1x blind stopper M20 x1.5;1x blind stopper
M16 x1.5or optional6)1x plug M12 x1for
external indicating and adjustment unit
or:
5)Depending on the version M12 x1,according to ISO 4400,Harting,7/8"FF.
6)Only with Ex d version
VEGAPULS 68 •4…20 mA/HART two-wire 61
11 Supplement
36535-EN-100607
l1x closing cap ½NPT,1x blind stopper
½NPT,1x blind stopper M16 x1.5or
optionally7)1x plug M12 x1for external
indicating and adjustment unit
or:
l1x plug (depending on the version), 1x blind
stopper M20 x1.5;1x blind stopper M16 x1.5
or optionally8)1x plug M12 x1for external
indicating and adjustment unit
Spring-loaded terminals for wire cross-section
-Massive wire,cord 0.2…2.5mm²(AWG 24 …14)
-Cord with cable end sleeve 0.2…1.5mm²(AWG 24 …16)
Electromechanical data -version IP 66/IP 68 (1bar)
Cable entry
-Single chamber housing 1xIP 68 cable gland M20 x1.5;1x blind stopper
M20 x1.5
-Double chamber housing 1xIP 68 cable gland M20 x1.5;1x blind stopper
M20 x1.5;1x blind stopper M16 x1.5
Connection cable
-Wire cross-section 0.5mm²(AWG 20)
-Wire resistance <0.036 Ω/m
-Tensile strength <1200 N(270 lbf)
-Standard length 5m(16.4ft)
-Max.length 1000 m(3280 ft)
-Min.bending radius 25 mm (0.984 in)with 25 °C(77 °F)
-Diameter approx.8mm (0.315 in)
-Colour -standard PE Black
-Colour -standard PUR Blue
-Colour -Ex-version Blue
Indicating and adjustment module
Voltage supply and data transmission through the sensor
Indication LC display in dot matrix
Adjustment elements 4keys
Protection rating
-unassembled IP 20
-mounted into the sensor without cover IP 40
Materials
7)Only with Ex d version
8)Only with Ex d version
62 VEGAPULS 68 •4…20 mA/HART two-wire
11 Supplement
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-Housing ABS
-Inspection window Polyester foil
Integrated clock
Date format Day.Month.Year
Time format 12 h/24 h
Time zone Ex factory CET
Electronics temperature measurement
Resolution 1°C(1.8°F)
Accuracy ±1°C(1.8°F)
Voltage supply
Operating voltage
-Non-Ex instrument 9.6…36 V DC
-Ex-ia instrument 9.6…30 V DC
-Ex-d-ia instrument 14 …36 V DC
Operating voltage with lighted indicating and adjustment module
-Non-Ex instrument 16 …36 V DC
-Ex-ia instrument 16 …30 V DC
-Ex-d-ia instrument 20 …36 V DC
Interpolation protection Available
Permissible residual ripple -Non-Ex,Ex-ia instrument
-for 9.6V
<UN
<14 V≤0.7V
eff
(16 …400 Hz)
-for 18 V
<UN
<36 V≤1.0V
eff
(16 …400 Hz)
Permissible residual ripple -Ex-d-ia instrument
-for 18 V
<UN
<36 V≤1V
eff
(16 …400 Hz)
Load see diagram
VEGAPULS 68 •4…20 mA/HART two-wire 63
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1200
927
500
750
250
12 18
16
9,6 14 2015,1 22 24 26 28 30 32 34 36
Ω
V
1
4
2
3
Fig.35:Voltage diagram
1HART load
2Voltage limit Ex-ia instrument
3Voltage limit non-Ex/Ex-d instrument
4Operating voltage
Electrical protective measures
Protection,depending on housing version
-Plastic housing IP 66/IP 67
-Aluminium housing,stainless steel
housing -investment casting,stainless
steel housing -electro-polished
IP 66/IP 68 (0.2bar)9)
-Aluminium and stainless housing,in-
vestment casting (optionally available)
IP 66/IP 68 (1bar)
Overvoltage category III
Protection class II
Approvals
Depending on the version,instruments with approvals can have different technical data.
For these instruments,the corresponding approval documents have to be taken into account.
These are part of the delivery or can be downloaded under www.vega.com via "VEGA Tools"and
"serial number search"as well as via "Downloads"and "Approvals".
9)The prerequisites for maintaining the protection rating are a suitable cable
as well as correct mounting.
64 VEGAPULS 68 •4…20 mA/HART two-wire
11 Supplement
36535-EN-100607
11.2Dimensions
The following dimensional drawings represent only an extract of the
possible versions.Detailed dimensional drawings can be downloaded
on www.vega.com under "Downloads"and "Drawings".
Housing plastic
~ 69 mm
(2.72")
ø 79 mm
(3.03")
112 mm (4.41")
M20x1,5/
½ NPT
~ 84 mm (3.31")
M16x1,5
112 mm (4.41")
M20x1,5/
½ NPT
12
ø 79 mm
(3.31")
1Single chamber version
2Double chamber version
Aluminium housing
21
ø 86 mm (3.39")
~ 116 mm (4.57")
116 mm (4.57")
M20x1,5
M20x1,5/
½ NPT
~ 87 mm (3.43")
M16x1,5
ø 86 mm
(3.39")
120 mm (4.72")
M20x1,5/
½ NPT
1Single chamber version
2Double chamber version
VEGAPULS 68 •4…20 mA/HART two-wire 65
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Aluminium housing in protection rating IP 66/IP 68 (1bar)
120 mm (4.72")
~ 105 mm (4.13")
116 mm (4.57")
~ 150 mm (5.91")
ø 84 mm (3.31") ø 84 mm
(3.31")
M20x1,5/
½ NPT
M16x1,5
2
M20x1,5M20x1,5
1
1Single chamber version
2Double chamber version
Stainless steel housing
~ 69 mm
(2.72")
ø 79 mm
(3.11")
117 mm (4.61")
M20x1,5/
½ NPT
~ 59 mm
(2.32")
ø 80 mm
(3.15")
112 mm (4.41")
M20x1,5/
½ NPT
~ 87 mm (3.43")
ø 86 mm
(3.39")
120 mm (4.72")
M20x1,5/
½ NPT
M16x1,5
321
1Single chamber version,electropolished
2Single chamber version,precision casting
2Double chamber version,precision casting
66 VEGAPULS 68 •4…20 mA/HART two-wire
11 Supplement
36535-EN-100607
Stainless steel housing in protection rating IP 66/IP 68,1bar
117 mm (4.61")
~ 103 mm
(4.06") ø 77 mm
(3.03")
120 mm (4.72")
~ 105 mm (4.13")
ø 84 mm
(3.31")
~ 93 mm
(3.66") ø 80 mm
(3.15")
112 mm (4.41")
M20x1,5/
½ NPT
M20x1,5
3
M20x1,5/
½ NPT
M16x1,5
21
1Single chamber version,electropolished
2Single chamber version,precision casting
2Double chamber version,precision casting
VEGAPULS 68 •4…20 mA/HART two-wire 67
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VEGAPULS 68 -horn antenna in threaded version
mm
inch
38 mm (1.50")
22 mm (0.87")
22 mm (0.87")
SW 46 mm
(1.81")
8.50"
16.93"
3.94" ø1.58"
ø1.89"
ø2.95"
ø3.74"
4.72"
x y
100 ø40
120 ø48
216 ø75
430 ø95
1½"
2"
3"
4"
x y
1½"
2"
3"
4"
x
y
G1½A / 1½ NPT
x
y
2 1
144 mm (5.67")
Fig.41:Radar sensor with horn antenna in threaded version
1Standard
2With temperature adapter up to 250 °C
68 VEGAPULS 68 •4…20 mA/HART two-wire
11 Supplement
36535-EN-100607
VEGAPULS 68 -horn antenna in flange version
x
y
21
165 mm (6.5")
260 mm (10.24")
60 mm
(2.36")
mm inch
8.50"
16.93"
3.94" ø1.58"
ø1.89"
ø2.95"
ø3.74"
4.72"
xy
100 ø40
120 ø48
216 ø75
430 ø95
1½"
2"
3"
4"
xy
1½"
2"
3"
4"
Fig.42:Radar sensor with horn antenna in flange version
1Standard
2With temperature adapter up to 250 °C/450 °C
VEGAPULS 68 •4…20 mA/HART two-wire 69
11 Supplement
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VEGAPULS 68 -horn antenna and swivelling holder
mm
inch
20 mm
(0.79")
20 mm
(0.79")
3.94" ø 1.58"
ø 1.89"
ø 2.95"
ø 3.74"
4.72"
8.50"
16.93"
x
y
x
y
1
x y
100 ø 40
120 ø 48
216 ø 75
430 ø 95
1½"
2"
3"
4"
x y
1½"
2"
3"
4"
40 mm
(1.58")
146 mm (5.75")
2
max. 15°
(0.59")
Fig.43:Radar sensor with horn antenna and swivelling holder
1Standard
2With temperature adapter up to 250 °C
70 VEGAPULS 68 •4…20 mA/HART two-wire
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36535-EN-100607
VEGAPULS 68 -parabolic antenna and swivelling holder
130 mm (5.12")
ø 243 mm (9.57")
1
40 mm
(1.58")
max. 15°
(0.59")
120 mm (4.72")
2
Fig.44:Radar sensor with parabolic antenna and swivelling holder
1Standard
2With temperature adapter up to 200 °C
VEGAPULS 68 •4…20 mA/HART two-wire 71
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11.3Industrial property rights
VEGA product lines are global protected by industrial property rights.
Further information see http://www.vega.com.
Only in U.S.A.: Further information see patent label at the sensor
housing.
VEGA Produktfamilien sind weltweit geschützt durch gewerbliche
Schutzrechte.
Nähere Informationen unter http://www.vega.com.
Les lignes de produits VEGA sont globalement protégées par des
droits de propriétéintellectuelle. Pour plus d'informations, on pourra
se référer au site http://www.vega.com.
VEGA lineas de productos están protegidas por los derechos en el
campo de la propiedad industrial. Para mayor información revise la
pagina web http://www.vega.com.
Линии продукции фирмы ВЕГА защищаются по всему миру
правами на интеллектуальную собственность.Дальнейшую
информацию смотрите на сайте http://www.vega.com.
VEGA系列产品在全球享有知识产权保护。
进一步信息请参见网站<http://www.vega.com>。
11.4Trademark
All the brands as well as trade and company names used are property
of their lawful proprietor/originator.
72 VEGAPULS 68 •4…20 mA/HART two-wire
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INDEX
A
Accessory
-External indicating and adjustment unit 9
-External radio unit 9
-Indicating and adjustment module 9
-Interface adapter 9
-Protective cover 10
Adjustment 38
-Max. adjustment 39
-Min. adjustment 38
Adjustment system 34
Agitator 21
Application
-Bulk solid 37
-Liquid 36
-Standpipe 37
C
Cable entry 27
Check signal 52
Connection cable 27
Connection procedure 28
Connection technology 28
D
DD (Device Description)47
Default values 42
E
Echo curve memory 48
EDD (Enhanced Device Description)47
Electronics and connection compartment with
single chamber housing 30
Electronics compartment,double chamber hou-
sing 30-31
Event memory 48
F
Fault rectification 52
Functional principle 8
G
Gating out of false signals 39
Grounding 28
H
HART resistor 45
K
Key function 34
L
Linearisation curve 40
M
Main menu 35
Measured value memory 48
Medium
-Bulk solid 35
Moisture 11
N
NAMUR NE 107
-Failure 49
-Function check 51
-Maintenance 51
-Out of specication 51
O
Overfill protection according to WHG 41
P
Polarisation plane 13
Potential equalisation 28
R
Reflection properties 36
Replacement parts
-Electronics module 10
Reset 41
S
Serial number 7
Service hotline 53
Shielding 28
Status messages 49
Subsurface enclosure 23
T
Type label 7
V
Vessel form 37
Vessel height 37
Vessel installations 20
VEGAPULS 68 •4…20 mA/HART two-wire 73
Index
36535-EN-100607
Vessel insulation 22
Voltage supply 27
74 VEGAPULS 68 •4…20 mA/HART two-wire
Index
36535-EN-100607
VEGAPULS 68 •4…20 mA/HART two-wire 75
Index
36535-EN-100607
VEGA Grieshaber KG
AmHohenstein 113
77761 Schiltach
Germany
Phone +49 7836 50-0
Fax +49 7836 50-201
E-mail:info@de.vega.com
www.vega.com
Printing date:
ISO 9001
All statements concerning scope of delivery,application,
practical use and operating conditions of the sensors and
processing systems correspond to the information avail-
able at the time of printing.
©VEGA Grieshaber KG,Schiltach/Germany 2010
Subject to change without prior notice 36535-EN-100607