Vega vegacap 62 User manual

Operating Instructions
VEGACAP 62
with two-wire output

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 ......................... 5
2.6Safety information for Ex areas............. 6
2.7Manufacturer declaration ................. 6
2.8Environmental instructions ................ 7
3Product description
3.1Configuration.......................... 8
3.2Principle of operation .................... 8
3.3Adjustment ........................... 10
3.4Storage and transport ................... 10
4Mounting
4.1General instructions ..................... 11
4.2Mounting information .................... 12
5Connecting to power supply
5.1Preparing the connection ................. 15
5.2Connection procedure ................... 15
5.3Wiring plans,single chamber housing ........ 17
5.4Wiring plans,version IP 66/IP 68,(1bar)..... 18
5.5Start-up reaction ....................... 18
6Set up
6.1General.............................. 20
6.2Adjustment elements .................... 20
7Maintenance and fault rectification
7.1Maintenance .......................... 22
7.2Fault rectification ....................... 22
7.3Exchange of the electronics module ......... 23
7.4Instrument repair ....................... 25
2VEGACAP 62 -with two-wire output
Contents
30007-EN-060222

8Dismounting
8.1Dismounting procedure .................. 26
8.2Disposal ............................. 26
9Supplement
9.1Technical data......................... 27
9.2Dimensions ........................... 31
9.3Industrial property rights.................. 34
VEGACAP 62 -with two-wire output 3
Contents
30007-EN-060222

1About this document
1.1Function
This operating instructions manual has all the information you
need for quick setup and safe operation.Please read this
manual before you start setup.
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,warning,danger
This symbol informs you of a dangerous situation that could
occur.Ignoring this cautionary note can impair the person and/
or the instrument.
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.
4VEGACAP 62 -with two-wire output
About this document
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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 operator.For safety and warranty reasons,
any internal work on the instruments must be carried out only
by personnel authorised by the manufacturer.
2.2Appropriate use
VEGACAP 62 is a sensor for level detection.
Detailed information on the application range of VEGACAP 62
is available in chapter "Product description".
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
VEGACAP 62 is a high-tech instrument requiring the strict
observance of standard regulations and guidelines.The user
must take note of the safety instructions in this operating
instructions manual,the country-specific installation standards
(e.g.the VDE regulations in Germany)as well as all prevailing
safety regulations and accident prevention rules.
2.5CE conformity
VEGACAP 62 is in CE conformity with EMC (89/336/EWG)
and NSR (73/23/EWG).
Conformity has been judged acc.to the following standards:
lEMC:
-Emission EN 61326:2004 (class B)
-Susceptibiliy EN 61326:2004/Supplement A
lLVD:EN 61010-1:2001
VEGACAP 62 -with two-wire output 5
For your safety
30007-EN-060222

2.6Safety information 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.
2.7Manufacturer declaration
In conformity with DIN EN 60079-14/2004,para.5.2.3,point
c1,the capacitive probe VEGACAP 62 is suitable for use in
zone 2.
The operator must use the instrument correctly and follow the
specifications of the following documents:
lthis operating instructions manual
lthis manufacturer declaration (24645)
lthe applicable installation regulations
Max.increase of the surface temperature during operation:
40 K(individual components in the instrument)
With an ambient temperature of +70°C(+158°F)on the
housing and a process temperature of +70°C(+158°F), the
max.ambient temperature during operation is +110°C
(+230°F).
Measures for maintaining explosion protection during oper-
ation:
lOperate the instrument in the range of the specified
electrical limit values.Permissible supply voltage:see
"Technical data"
lMount and operate the instrument in such a way that no
ignition danger is expected by electrostatic charges.The
process fitting,the plastic-coated/covered probe part or the
housing are made of electrically non-conductive plastic
(depending on the version).
lMake sure that the seal is mounted correctly between
lower part of the housing and cover.Screw the cover on
tightly.
lMake sure that there is no explosive atmosphere,if you
want to operate the instrument with open cover
lMake sure that the cable gland is tight and strain-relieved.
The outer diameter of the connection cable must be
adapted to the cable gland.Tighten the pressure screw of
the cable gland carefully.
lCover unused openings for cable glands tightly
6VEGACAP 62 -with two-wire output
For your safety
30007-EN-060222

lMount the instrument in such a position that the sensor
cannot touch the vessel wall or vessel installations.Keep
the influences of product movements in the vessel in mind.
lThe surface temperature on the housing must not exceed
the ingnition temperature of the concerned explosive
atmosphere
This instrument was judged by a person that fulfils the
requirements acc.to DIN EN 60079-14.
2.8Environmental 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 man-
agement system is certified acc.to DIN EN ISO 14001.
Please help us fulfil this obligation by observing the environ-
mental instructions in this manual:
lChapter "Storage and transport"
lChapter "Disposal"
VEGACAP 62 -with two-wire output 7
For your safety
30007-EN-060222

3Product description
3.1Configuration
The scope of delivery encompasses:
lVEGACAP 62 level sensor
lDocumentation
-this operating instructions manual
-Ex specific safety instructions (with Ex versions), if
necessary further certificates
VEGACAP 62 consists of the following components:
lHousing cover
lHousing with electronics
lProcess fitting with electrode
1
2
3
Fig.1:VEGACAP 62 with plastic housing
1Housing cover
2Housing with electronics
3Process fitting
3.2Principle of operation
VEGACAP 62 is a level sensor with partly insulated capacitive
electrode for level detection.
VEGACAP 62 is very rugged and maintenance-free and can
be used in all areas of industrial process technology.
Partly insulated probes such as VEGACAP 62 are preferably
used in bulk solids.
Scope of delivery
Components
Area of application
8VEGACAP 62 -with two-wire output
Product description
30007-EN-060222

The level switch can also be used in non-conductive liquids
such as e.g.oil.
Typical applications are overfill and dry run protection.
The capacitive measuring principle places no special require-
ments on installation.Hence,many different applications can
be equipped with VEGACAP 62.
The instrument can also be used problem-free in adhesive
products.
The probe,the measured product and the vessel wall form an
electrical capacitor.The capacitance is influenced by three
main factors:
1
2
3
Fig.2:Functional principle -Plate capacitor
1Distance between the electrode surfaces
2Size of the electrode surfaces
3Type of dielectric between the electrodes
The probe and the vessel wall are the capacitor plates.The
measured product is the dielectric.Due to the higher dielectric
constant (DK value)of the product compared to air,the
capacitance increases as the probe is gradually covered.
The capacitance change is converted by the oscillator into a
switching command.
Depending on your requirements,VEGACAP 62 with two-wire
electronics can be connected to different signal conditioning
instruments.Compatible signal conditioning instruments are
listed under "Technical data".
The exact range of the voltage supply is specified in the
"Technical data"in the "Supplement".
Physical principle
Supply
VEGACAP 62 -with two-wire output 9
Product description
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3.3Adjustment
The probe can be adapted to the dielectric constant of the
product directly on the electronics module.
Aswitching command can be triggered when the probe is
covered or laid bare.
On the electronics module you will find the following indicating
and adjustment elements:
lSignal lamp for indication of the device status.
3.4Storage and transport
Your instrument was protected by packaging during transport.
Its capacity to handle normal loads during transport is assured
by a test acc.to DIN 55439.
The packaging of standard instruments consists of environ-
ment-friendly,recyclable cardboard.For special versions,PE
foam or PE foil is also used.Dispose of the packaging material
via specialised recycling companies.
lStorage and transport temperature see "Supplement -
Technical data -Ambient conditions"
lRelative humidity 20 …85 %
Packaging
Storage and transport tem-
perature
10 VEGACAP 62 -with two-wire output
Product description
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4Mounting
4.1General instructions
In general,VEGACAP 62 can be mounted in any position.The
instrument must be mounted in such a way that the probe is at
the height of the requested switching point.
With screwed versions,the housing must not be used for
screwing in!Tightening can cause damages on the locking
piston of the housing.
To screw in,use the hexagon above the thread.
Use the recommended cable (see chapter "Connecting to
power supply")and tighten the cable gland.
You can give your VEGACAP 62 additional protection against
moisture penetration by leading the connection cable down-
ward in front of the cable entry.Rain and condensation water
can thus drain off.This applies mainly to mounting outdoors,in
areas where moisture is expected (e.g.by cleaning processes)
or on cooled or heated vessels.
Fig.3:Measures against moisture penetration
Do not hold VEGACAP 62 on the probe.Especially with heavy
flange versions or long rod versions,the sensor can be
damaged simply by the weight of the instrument.
The process fitting must be sealed if there is gauge or low
pressure in the vessel.Before use,check if the seal material is
resistant against the measured product and the process
temperature.
Switching point
Handling
Moisture
Transport
Pressure/Vacuum
VEGACAP 62 -with two-wire output 11
Mounting
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4.2Mounting information
Due to agitators,vibrations or similar,the level switch can be
subjected to strong lateral forces.For this reason,do not use
an overly long probe for VEGACAP 62,but check if you can
mount a short level switch on the side of the vessel in
horizontal position.
Extreme vibration caused by the system,e.g.due to agitators
or turbulence in the vessel from fluidization can cause the
probe of VEGACAP 62 to vibrate in resonance.If a longer rod
version is necessary,you can secure the probe by fastening a
suitable insulating brace or guy directly above the end of the
rod.
IfVEGACAP 62 is mounted in the filling stream,unwanted
false measurements may be generated.Mount VEGACAP 62
at a location in the vessel where no disturbing influence from e.
g.filling openings,agitators,etc.can occur.
This applies particularly to instrument versions with a longer
probe.
Fig.4:Inflowing material
Agitators and fluidization
Inflowing material
12 VEGACAP 62 -with two-wire output
Mounting
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The probe should protrude into the vessel to avoid buildup.For
that reason,avoid using mounting bosses for flanges and
screwed fittings.This applies particularly to use with adhesive
products.
In silos with bulk solids,material cones can form which change
the switching point.Please keep this in mind when installing
the sensor in the vessel.We recommend selecting an
installation location where the probe detects the average value
of the material cone.
The measuring probe must be mounted in a way that takes the
arrangement of the filling and emptying apertures into account.
To compensate measurement errors caused by the material
cone in cylindrical vessels,the sensor must be mounted at a
distance of d/6from the vessel wall.
d d
d
6
d
6
Fig.5:Filling and emptying centered
Socket
Material cone
VEGACAP 62 -with two-wire output 13
Mounting
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d
d
6
1
2
3
Fig.6:Filling in the center,emptying laterally
1VEGACAP 62
2Emptying opening
3Filling opening
14 VEGACAP 62 -with two-wire output
Mounting
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5Connecting to power supply
5.1Preparing the connection
Always observe the following safety instructions:
lConnect only in the complete absence of line voltage
In hazardous areas you should take note of the appropriate
regulations,conformity and type approval certificates of the
sensors and power supply units.
Connect the power supply acc.to the following diagrams.Take
note of the general installation regulations.As a rule,connect
VEGACAP 62 to vessel ground (PA), or in case of plastic
vessels,to the next ground potential.On the side of the
instrument housing there is a ground terminal between the
cable entries.This connection serves to drain offelectrostatic
charges.InEx applications,the installation regulations for
hazardous areas must be given priority.
The data for power supply are stated in the "Technical data"in
the "Supplement".
VEGACAP 62 is connected with standard cable with round
wire cross section.An outer cable diameter of 5…9mm
(0.2…0.35 in)ensures the seal effect of the cable entry.
If cable with a different diameter or wire cross section is used,
exchange the seal or use an appropriate cable connection.
In hazardous areas,only use approved cable connections for
VEGACAP 62.
Take note of the corresponding installation regulations for Ex
applications.
5.2Connection procedure
With Ex instruments,the housing cover may only be opened if
there is no explosive atmosphere present.
Proceed as follows:
1Unscrew the housing cover
2Loosen compression nut of the cable entry
Note safety instructions
Take note of safety
instructions for Ex
applications
Select power supply
Select connection cable
Select connection
cable for Ex applica-
tions
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Connecting to power supply
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3Remove approx.10 cm (4in)of the cable mantle,strip
approx.1cm (0.4in)insulation from the ends of the
individual wires
4Insert the cable into the sensor through the cable entry
5Lift the opening levers of the terminals with a screwdriver
(see following illustration)
6Insert the wire ends into the open terminals according to
the wiring plan
7Press down the opening levers of the terminals,you will
hear the terminal spring closing
8Check the hold of the wires in the terminals by lightly
pulling on them
9Tighten the compression nut of the cable entry,the seal
ring must completely encircle the cable
10 Screw the housing cover back on
The electrical connection is finished.
Fig.7:Connection steps 5and 6
16 VEGACAP 62 -with two-wire output
Connecting to power supply
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5.3Wiring plans,single chamber housing
1
4
44
2 3
Fig.8:Material versions,single chamber housing
1Plastic (not with dust-Ex)
2Aluminium
3Stainless steel
4Filter element for pressure compensation or blind stopper with version IP 66/
IP 68,1bar
4
1
2
3
Fig.9:Electronics and connection compartment
1DIL switch for measuring range selection
2Ground terminal
3Terminals
4Control lamp
For connection to a signal conditioning instrument.The sensor
is powered by the connected signal conditioning instrument.
Further information is available in the "Technical data"in the
"Supplement",Ex-technical data are available in the supplied
safety information manual.
Housing overview
Electronics and connection
compartment
Wiring plan
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Connecting to power supply
30007-EN-060222

The wiring example is applicable for all suitable signal
conditioning instruments.
Take note of the operating instructions manual of the signal
conditioning instrument.Suitable signal conditioning instru-
ments are listed in the "Technical data".
1
Fig.10:Wiring plan
1Voltage supply
5.4Wiring plans,version IP 66/IP 68,(1bar)
+
-
1
2
Fig.11:Wire assignment,connection cable
1br (+)and bl (-) for power supply or to the processing system
2Screen
5.5Start-up reaction
After connecting to voltage supply or after a voltage
recurrence,the instrument passes a certain switch on routine.
By lowering the current value when switching on,the instru-
ment can output briefly a fault message.
Wire assignment,connection
cable
18 VEGACAP 62 -with two-wire output
Connecting to power supply
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10
I/mA
20,5
< 2,3
1,5 3 4,5 t/s
1
Fig.12:Start-up reaction
1Measured value
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Connecting to power supply
30007-EN-060222

6Set up
6.1General
The numbers in brackets refer to the following illustrations.
On the electronics module you will find the following indicating
and adjustment elements:
lDIL switch for measuring range selection
lControl lamp
Note:
As a rule,always set the mode with the mode switch of the
signal conditioning instrument before starting setup VEGACAP
62.The switching output will change if you set the mode switch
afterwards.This could possibly trigger other connected
instruments or devices.
6.2Adjustment elements
4
1
2
3
Fig.13:Oscillator -two-wire output
1DIL switch for measuring range selection
2Ground terminal
3Terminals
4Control lamp
Afailure can be displayed when the housing is closed (only
plastic housing), see "Function chart".
Function/Configuration
20 VEGACAP 62 -with two-wire output
Set up
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