Vega EL 8 User manual

Operating Instructions
Conductive rod electrode
Conductive probe EL 8
Document ID: 32655

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Contents
Conductive probe EL 8 •
32655-EN-220324
Contents
1 About this document ............................................................................................................... 3
1.1 Function ........................................................................................................................... 3
1.2 Target group ..................................................................................................................... 3
1.3 Symbols used................................................................................................................... 3
2 For your safety ......................................................................................................................... 4
2.1 Authorised personnel ....................................................................................................... 4
2.2 Appropriate use................................................................................................................ 4
2.3 Warning about incorrect use............................................................................................. 4
2.4 General safety instructions............................................................................................... 4
2.5 Installation and operation in the USA and Canada ........................................................... 5
2.6 Safety instructions for Ex areas ........................................................................................ 5
2.7 Environmental instructions ............................................................................................... 5
3 Product description ................................................................................................................. 6
3.1 Conguration.................................................................................................................... 6
3.2 Principle of operation........................................................................................................ 7
3.3 Adjustment ....................................................................................................................... 7
3.4 Packaging, transport and storage..................................................................................... 7
4 Mounting................................................................................................................................... 9
4.1 General instructions ......................................................................................................... 9
4.2 Mounting instructions ....................................................................................................... 9
5 Connecting to power supply................................................................................................. 11
5.1 Preparing the connection ............................................................................................... 11
5.2 Wiring plan ..................................................................................................................... 11
6 Setup ....................................................................................................................................... 13
6.1 General information........................................................................................................ 13
7 Maintenanceandfaultrectication...................................................................................... 14
7.1 Maintenance .................................................................................................................. 14
7.2 Rectify faults................................................................................................................... 14
7.3 Shortening the probe...................................................................................................... 14
7.4 How to proceed if a repair is necessary.......................................................................... 14
8 Dismount................................................................................................................................. 16
8.1 Dismounting steps.......................................................................................................... 16
8.2 Disposal ......................................................................................................................... 16
9 Supplement ............................................................................................................................ 17
9.1 Technical data ................................................................................................................ 17
9.2 Dimensions .................................................................................................................... 18
9.3 Industrial property rights................................................................................................. 19
Editing status: 2022-03-11

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1 About this document
Conductive probe EL 8 •
32655-EN-220324
1 About this document
1.1 Function
This instruction provides all the information you need for mounting,
connection and setup as well as important instructions for mainte-
nance,faultrectication,theexchangeofpartsandthesafetyofthe
user. Please read this information before putting the instrument into
operation and keep this manual accessible in the immediate vicinity
of the device.
1.2 Target group
This operating instructions manual is directed to trained personnel.
Thecontentsofthismanualmustbemadeavailabletothequalied
personnel and implemented.
1.3 Symbols used
Document ID
This symbol on the front page of this instruction refers to the Docu-
ment ID. By entering the Document ID on www.vega.com you will
reach the document download.
Information, note, tip: This symbol indicates helpful additional infor-
mation and tips for successful work.
Note: This symbol indicates notes to prevent failures, malfunctions,
damage to devices or plants.
Caution: Non-observance of the information marked with this symbol
may result in personal injury.
Warning: Non-observance of the information marked with this symbol
may result in serious or fatal personal injury.
Danger: Non-observance of the information marked with this symbol
results in serious or fatal personal injury.
Ex applications
This symbol indicates special instructions for Ex applications.
• List
The dot set in front indicates a list with no implied sequence.
1 Sequence of actions
Numbers set in front indicate successive steps in a procedure.
Disposal
This symbol indicates special instructions for disposal.

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2 For your safety
Conductive probe EL 8 •
32655-EN-220324
2 For your safety
2.1 Authorised personnel
All operations described in this documentation must be carried out
onlybytrained,qualiedpersonnelauthorisedbytheplantoperator.
During work on and with the device, the required personal protective
equipment must always be worn.
2.2 Appropriate use
The EL 8 is a sensor for point level detection.
Youcannddetailedinformationabouttheareaofapplicationin
chapter " Product description".
Operational reliability is ensured only if the instrument is properly
usedaccordingtothespecicationsintheoperatinginstructions
manual as well as possible supplementary instructions.
For safety and warranty reasons, any invasive work on the device
beyond that described in the operating instructions manual may be
carried out only by personnel authorised by the manufacturer. Arbi-
traryconversionsormodicationsareexplicitlyforbidden.
2.3 Warning about incorrect use
Inappropriate or incorrect use of this product can give rise to applica-
tion-specichazards,e.g.vesseloverllthroughincorrectmounting
or adjustment. Damage to property and persons or environmental
contamination can result. Also, the protective characteristics of the
instrument can be impaired.
2.4 General safety instructions
This is a state-of-the-art instrument complying with all prevailing
regulations and directives.The instrument must only be operated in a
technicallyawlessandreliablecondition.Theoperatorisresponsi-
ble for the trouble-free operation of the instrument. When measuring
aggressive or corrosive media that can cause a dangerous situation
if the instrument malfunctions, the operator has to implement suitable
measures to make sure the instrument is functioning properly.
The safety instructions in this operating instructions manual, the na-
tional installation standards as well as the valid safety regulations and
accident prevention rules must be observed by the user.
For safety and warranty reasons, any invasive work on the device
beyond that described in the operating instructions manual may be
carried out only by personnel authorised by the manufacturer. Arbi-
traryconversionsormodicationsareexplicitlyforbidden.Forsafety
reasons,onlytheaccessoryspeciedbythemanufacturermustbe
used.
To avoid any danger, the safety approval markings and safety tips on
the device must also be observed.

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2 For your safety
Conductive probe EL 8 •
32655-EN-220324
2.5 Installation and operation in the USA and
Canada
This information is only valid for USA and Canada. Hence the follow-
ing text is only available in the English language.
Installations in the US shall comply with the relevant requirements of
the National Electrical Code (ANSI/NFPA 70).
Installations in Canada shall comply with the relevant requirements of
the Canadian Electrical Code.
2.6 Safety instructions for Ex areas
For applications in explosion-proof areas (Ex), only devices with cor-
respondingExapprovalmaybeused.ObservetheEx-specicsafety
instructions.These are an integral part of the operating instructions
and are enclosed with every device with Ex approval.
2.7 Environmental instructions
Protection of the environment is one of our most important duties.
That is why we have introduced an environment management system
with the goal of continuously improving company environmental pro-
tection.Theenvironmentmanagementsystemiscertiedaccording
to DIN EN ISO 14001.
Pleasehelpusfullthisobligationbyobservingtheenvironmental
instructions in this manual:
• Chapter " Packaging, transport and storage"
• Chapter " Disposal"

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3 Product description
Conductive probe EL 8 •
32655-EN-220324
3 Product description
3.1 Conguration
The scope of delivery encompasses:
• EL 8 point level switch
• Documentation
– This operating instructions manual
The EL 8 consists of the components:
• Housing
• Processttingwithelectrode
1
2
Fig. 1: Conductive rod electrode EL 8
1 Housing
2 Processtting
To create a measuring system you need one conductive probe and a
VEGATOR 131 or 132 controller
The type label contains the serial number of the instrument. With it
youcanndthefollowinginstrumentdataonourhomepage:
• Product code (HTML)
• Delivery date (HTML)
• Order-specicinstrumentfeatures(HTML)
• Operating instructions and quick setup guide at the time of ship-
ment (PDF)
• Order-specicsensordata
Move to " www.vega.com"andenterinthesearcheldtheserial
number of your instrument.
Alternatively, you can access the data via your smartphone:
• Download the VEGA Tools app from the " Apple App Store" or the
" Google Play Store"
• Scan the DataMatrix code on the type label of the instrument or
• Enter the serial number manually in the app
Scope of delivery
Constituent parts
Serial number - Instru-
ment search

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3 Product description
Conductive probe EL 8 •
32655-EN-220324
3.2 Principle of operation
EL 8 is a point level sensor with partly insulated conductive electrode
for level detection.
EL 8 is very rugged and can be used in all areas of industrial process
technology.
The level switch can be used in conductive liquids such as e.g. water.
Typicalapplicationsareoverllanddryrunprotection.
The conductive measuring principle places no special requirements
oninstallation.Hence,manydierentapplicationscanbeequipped
with EL 8.
Conductive probes detect the product resistance when their elec-
trodes are covered by the product.
The switching signal is determined by the length or mounting position
of the respective electrode.
Alowalternatingcurrentowsthroughtheelectrodes,ismeasuredfor
amplitude and phase position by the electronics of the controller and
converted into a switching command.
EL 8 is operated with an external processing unit. The connected
controller powers EL 8 and provides a switching signal. A connected
device can be activated directly with this switching command (e.g. a
warning system, a PLC, a pump, etc.).
Youcanndtheexactrangeofthevoltagesupplyinchapter"Techni-
cal data" in the operating instructions manual of the controller.
3.3 Adjustment
The probe does not have its own electronics.The measurement is
carried out via the connected controller.
3.4 Packaging, transport and storage
Your instrument was protected by packaging during transport. Its
capacity to handle normal loads during transport is assured by a test
based on ISO 4180.
The packaging of standard instruments consists of environment-
friendly, recyclable cardboard. For special versions, PE foam or PE
foil is also used. Dispose of the packaging material via specialised
recycling companies.
Transport must be carried out in due consideration of the notes on the
transport packaging. Nonobservance of these instructions can cause
damage to the device.
The delivery must be checked for completeness and possible transit
damage immediately at receipt. Ascertained transit damage or con-
cealed defects must be appropriately dealt with.
Area of application
Functional principle
Voltage supply
Packaging
Transport
Transport inspection

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3 Product description
Conductive probe EL 8 •
32655-EN-220324
Up to the time of installation, the packages must be left closed and
stored according to the orientation and storage markings on the
outside.
Unless otherwise indicated, the packages must be stored only under
the following conditions:
• Not in the open
• Dry and dust free
• Not exposed to corrosive media
• Protected against solar radiation
• Avoiding mechanical shock and vibration
• Storage and transport temperature see chapter " Supplement -
Technical data - Ambient conditions"
• Relative humidity 20 … 85 %
With instrument weights of more than 18 kg (39.68 lbs) suitable and
approved equipment must be used for lifting and carrying.
Storage
Storage and transport
temperature
Lifting and carrying

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4 Mounting
Conductive probe EL 8 •
32655-EN-220324
4 Mounting
4.1 General instructions
In general the level switch can be mounted in any position.The instru-
ment must be mounted in such a way that the probe is at the height of
the requested switching point.
The probe is provided with a special hexagon for tightening. Due to
the hexagon shape, the housing itself can be used to screw the instru-
ment in.
Thewrenchsizeisstatedinchapter"Supplement" under " Dimen-
sions".
Use the recommended cables (see chapter " Connecting to voltage
supply") and keep the opening for the cable as small as possible.
You can give your EL 8 additional protection against moisture pene-
tration by leading the connection cable downward in front of the cable
gland.Rainandcondensationwatercanthusdraino.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.
Do not hold EL 8 on its electrode rods. Particularly with long rod ver-
sions, the sensor can be damaged by the weight of the instrument.
Theprocessttingmustbesealedifthereisgaugeorlowpressure
in the vessel. Before use, check if the sealing material is resistant
against the measured product and the process temperature.
Themax.permissiblepressureisspeciedinchapter"Technical
data" or on the type label of the sensor.
4.2 Mounting instructions
Due to agitators, equipment vibration or similar, the level switch can
be subjected to strong lateral forces.
Extreme vibration caused by the system, e.g. due to agitators or
turbulenceinthevesselfromuidisation,cancausetheprobeofEL
8 to vibrate in resonance. If a longer rod version is necessary, you can
secure the probe by fastening a suitable isolated brace or guy directly
above the end of the rod.
Switching point
Handling
Moisture
Transport
Pressure/Vacuum
Agitatorsanduidization

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4 Mounting
Conductive probe EL 8 •
32655-EN-220324
1
2
1
2
Fig. 2: Fasten the probe
1 Measuring probe
2 Plastic sleeve at the probe end or laterally mounted
IfEL8ismountedinthellingstream,unwantedfalsemeasurement
signals can be generated. For this reason, mount EL 8 at a position in
thevesselwherenodisturbances,e.g.fromllingopenings,agitators,
etc., can occur.
This applies particularly to instrument versions with a longer probe.
Fig.3:Inowingmedium
The probe should protrude into the vessel to avoid buildup. For that
reason,avoidusinghighmountingbossesforscrew-inttings.This
applies particularly to use in adhesive products.
Make sure that the mechanical connection of the probe to the vessel
iselectricallyconductivetoensuresucientgrounding.
Use conductive seals, such as those made of copper or lead, etc.
Insulatingmeasures,suchascoveringthethreadwithTeontape,
can interrupt the necessary electrical connection with metal vessels.
For this reason, ground the probe on the vessel or use a conductive
seal material.
Inowingmedium
Nozzle
Ground connection