Vega vegacap 62 User manual

Operating Instructions
VEGACAP 62
-two-wire
Document ID:
30007
Capacitive

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
2.5Safety label on the instrument . . . . . . . . . . . . . . . . . . 6
2.6CE conformity ............................. 6
2.7Safety instructions for Ex areas . . . . . . . . . . . . . . . . . 6
2.8Environmental instructions..................... 6
3Product description
3.1Configuration .............................. 7
3.2Principle of operation ........................ 8
3.3Operation................................. 9
3.4Storage and transport ........................ 9
4Mounting
4.1General instructions ......................... 11
4.2Mounting instructions ........................ 12
5Connect to power supply
5.1Prepare the connection....................... 16
5.2Connection procedure........................ 16
5.3Wiring plan,single chamber housing . . . . . . . . . . . . . 18
5.4Wiring plan -version IP 66/IP 68,1bar . . . . . . . . . . . 19
5.5Warm-up reaction........................... 19
6Set up
6.1General information ......................... 21
6.2Adjustment elements ........................ 21
7Maintenance and fault rectification
7.1Maintenance .............................. 23
7.2Remove interferences ........................ 23
7.3Exchange of the electronics module . . . . . . . . . . . . . 25
7.4Shortening of the probe . . . . . . . . . . . . . . . . . . . . . . 26
7.5Instrument repair ........................... 27
8Dismounting
8.1Dismounting steps .......................... 28
8.2Disposal ................................. 28
2VEGACAP 62 • - two-wire
Contents
30007-EN-090604

9Supplement
9.1Technical data ............................. 29
9.2Dimensions ............................... 33
Supplementary documentation
Information:
Supplementary documents appropriate to the ordered version come
with the delivery.You can find them listed in chapter "Product
description".
Instructions manuals for accessories and replacement parts
Tip:
To ensure reliable setup and operation of your VEGACAP 62,we offer
accessories and replacement parts.The associated documents are:
l30174 -Electronics module VEGACAP series 60
l34296 -Protective cover
l31088 -Flanges according to DIN-EN-ASME-JIS-GOST
VEGACAP 62 • - two-wire 3
Contents
30007-EN-090604

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.
4VEGACAP 62 • - two-wire
1About this document
30007-EN-090604

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
VEGACAP 62 is a sensor for level detection.
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.
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.
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 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 as well as all prevailing safety
regulations and accident prevention rules.
The instrument must only be operated in a technically flawless and
reliable condition.The operator is responsible for 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.
VEGACAP 62 • - two-wire 5
2For your safety
30007-EN-090604

2.5Safety label on the instrument
The safety approval markings and safety tips on the device must be
observed.
2.6CE conformity
This 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.
2.7Safety 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.
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 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"
6VEGACAP 62 • - two-wire
2For your safety
30007-EN-090604

3Product description
3.1Configuration
The scope of delivery encompasses:
lVEGACAP 62 point level sensor
lDocumentation
-this operating instructions manual
-Safety Manual -31813 "VEGACAP series 60 -Two-wire"
(optional)
-Supplementary instructions manual "Plug connector for level
sensors"(optional)
-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
The type label contains the most important data for identification and
use of the instrument:
lArticle number
lSerial number
lTechnical data
lArticle numbers,documentation
Scope of delivery
Components
Type label
VEGACAP 62 • - two-wire 7
3Product description
30007-EN-090604

The serial number allows you to access the delivery data of the
instrument via www.vega.com,"VEGA Tools"and "serial number
search".In addition to the type label outside,you can also find the
serial number on the inside of the instrument.
3.2Principle of operation
VEGACAP 62 is a point 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.
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 requirements on
installation.Hence,many different applications can be equipped with
VEGACAP 62.
Probe,measured product and 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 electronics module into a
switching command.
Application area
Functional principle
8VEGACAP 62 • - two-wire
3Product description
30007-EN-090604

Depending on your requirements,VEGACAP 62 with two-wire
electronics can be connected to different signal conditioning instru-
ments.Compatible signal conditioning instruments are listed in chapter
"Technical data".
The data for power supply are specified in chapter "Technical data".
3.3Operation
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:
lControl 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
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 appropriately dealt with.
Up to the time of installation,the packages must be left closed and
stored according to the orientation and storage markings on the
outside.
Unless otherwise indicated,the packages must be stored only under
the following conditions:
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"
Power supply
Packaging
Transport
Transport inspection
Storage
Storage and transport
temperature
VEGACAP 62 • - two-wire 9
3Product description
30007-EN-090604

lRelative humidity 20 …85 %
10 VEGACAP 62 • - two-wire
3Product description
30007-EN-090604

4Mounting
4.1General instructions
Make sure that all parts of the instrument exposed to the process,in
particular the sensor element,process 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.
In general the level switch 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.
Before beginning the welding work,remove the electronics module
from the sensor.By doing this,you avoid damage to the electronics
through inductive coupling.
With threaded versions,the housing must not be used to screw in the
instrument!Applying tightening forces on the housing can damage its
internal parts.
Use the hexagon for screwing in.
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.
Fig.3:Measures against moisture penetration
Suitability for process
conditions
Switching point
Welding work
Handling
Moisture
VEGACAP 62 • - two-wire 11
4Mounting
30007-EN-090604

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.
The max.permissible pressure is specified in chapter "Technical data"
or on the type label of the sensor.
If condensate forms on the vessel top,the run-offliquid can cause
bridging and hence faulty switchings.
For this reason,use a screening tube or a longer insulation.The length
depends on the amount of condensate and the drain-offbehaviour of
the product.
4.2Mounting instructions
Agitators,equipment vibration,etc., can cause the level switch to 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.
If the instrument is mounted in the filling stream,unwanted false
measurement signals can be generated.For this reason,mount the
instrument at a position in the vessel where no disturbances,e.g.from
filling openings,agitators,etc., can occur.
This applies particularly to instrument versions with a longer probe.
Transport
Pressure/Vacuum
Condensation
Agitators and fluidiza-
tion
Inflowing medium
12 VEGACAP 62 • - two-wire
4Mounting
30007-EN-090604

Fig.4:Inflowing medium
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 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/6
from the vessel wall.
Socket
Material cone
VEGACAP 62 • - two-wire 13
4Mounting
30007-EN-090604

d d
d
6
d
6
Fig.5:Filling and emptying centered
14 VEGACAP 62 • - two-wire
4Mounting
30007-EN-090604

d
d
6
1
2
3
Fig.6:Filling in the center,emptying laterally
1VEGACAP 62
2Discharge opening
3Filling opening
VEGACAP 62 • - two-wire 15
4Mounting
30007-EN-090604

5Connect to power supply
5.1Prepare the connection
Always keep in mind 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 operating voltage according 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 specified in chapter "Technical data".
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.
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
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 through the cable gland into the sensor
Note safety instructions
Take note of
safety instruc-
tions for Ex ap-
plications
Select power supply
Selecting connection
cable
Select connec-
tion cable for Ex
applications
16 VEGACAP 62 • - two-wire
5Connect to power supply
30007-EN-090604

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 If necessary,carry out a fresh adjustment
11 Screw the housing cover on
The electrical connection is finished.
Fig.7:Connection steps 5and 6
VEGACAP 62 • - two-wire 17
5Connect to power supply
30007-EN-090604

5.3Wiring plan,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
3Connection terminals
4Control lamp
For connection to a signal conditioning instrument.The sensor is
powered by the connected signal conditioning instrument.Further
information is available in chapter "Technical data","Ex-technical data"
are available in the "Safety information".
The wiring example is applicable for all suitable signal conditioning
instruments.
Housing overview
Electronics and connec-
tion compartment
Wiring plan
18 VEGACAP 62 • - two-wire
5Connect to power supply
30007-EN-090604

Take note of the operating instructions manual of the signal
conditioning instrument.Suitable signal conditioning instruments are
listed in chapter "Technical data".
1
Fig.10:Wiring plan
1Power supply
5.4Wiring plan -version IP 66/IP 68,1bar
+
-
1
2
Fig.11:Wire assignment,connection cable
1brown (+)and blue (-) to power supply or to the processing system
2Shielding
5.5Warm-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 instrument can
output briefly a fault message.
Wire assignment,con-
nection cable
VEGACAP 62 • - two-wire 19
5Connect to power supply
30007-EN-090604

10
I/mA
20,5
< 2,3
1,5 3 4,5 t/s
1
Fig.12:Warm-up reaction
1Measured value
20 VEGACAP 62 • - two-wire
5Connect to power supply
30007-EN-090604