Vega VEGACAP 63 Wiring diagram

Supplementary instructions
Float for oil/water detection
for VEGACAP 63
Document ID:
31595
Capacitive

Contents
1About this document
1.1Function.................................. 3
1.2Target group .............................. 3
1.3Symbolism used............................ 3
2For your safety
2.1Authorised personnel ........................ 4
2.2Appropriate use ............................ 4
2.3Environmental instructions..................... 4
3Product description
3.1Structure ................................. 5
3.2Principle of operation ........................ 5
3.3Storage and transport ....................... 6
4Mounting
4.1General instructions ......................... 7
5Connect the sensor
5.1Preparing the connection ..................... 8
5.2Connection procedure........................ 8
6Setup
6.1Setup.................................... 9
7Maintenance
7.1Instrument repair ........................... 11
8Dismounting
8.1Dismounting steps .......................... 12
8.2Disposal ................................. 12
9Supplement
9.1Technical data ............................. 13
9.2Dimensions ............................... 14
2Float for oil/water detection •for VEGACAP 63
1Contents
31595-EN-100604

1About this document
1.1Function
This supplementary manual,together with the attached 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: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.
Exapplications
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.
Float for oil/water detection •for VEGACAP 63 3
1About this document
31595-EN-100604

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
The float for oil/water detection is part of a sensor.It is used for
detection of light liquids on water.
2.3Environmental 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 "Storage and transport"
lChapter "Disposal"
4Float for oil/water detection •for VEGACAP 63
2For your safety
31595-EN-100604

3Product description
3.1Structure
The scope of delivery encompasses:
lFloating body for a point level sensor
lNut G1½(plastic)
lAdapter with pin
lGround rod
lDocumentation
-This supplementary operating instructions
The instrument version "Point level sensor with float"consists of a float
and the point level sensor.
1
2
3
6
45
Fig.1:Components of the float probe
1Probe (mounted in the centre)
2Nut (plastic)
3Adapter (316L)with pin
4Electrode
5Ground electrode (screwed into the adapter)
6Float
3.2Principle of operation
The float is suitable for the following plics
®
sensors:
lVEGACAP 63
Scope of delivery
Constituent parts
Application area
Float for oil/water detection •for VEGACAP 63 5
3Product description
31595-EN-100604

The probe detects non-conductive light liquids (<1kg/dm³)on water,
e.g.in water or oil separating basins.
1
2
4
3
Fig.2:Measuring system for oil/water detection
1Cable holder for relief
2Inlet -Water/Oil mixture
3Oil layer
4Water
The measuring system floats on the water and due to the own weight
the electrode of the probe immerses up to a certain depth.
If there is e.g.oil on the water surface,the measuring system floats.
The immersion depth of the electrode in water reduces.Hence the
capacitance of the probe changes.The capacitance change is
converted into a switching command.
An oil layer can be already detected from a thickness of 4mm.
3.3Storage 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.
lStorage and transport temperature see chapter "Supplement -
Technical data -Ambient conditions"
lRelative humidity 20 …85 %
Functional principle
Packaging
Storage and transport
temperature
6Float for oil/water detection •for VEGACAP 63
3Product description
31595-EN-100604

4Mounting
4.1General instructions
To prevent the float from touching the vessel wall,it can be guided
vertically.
Use two thin vertical rods or two vertically strained wires at a distance
of 306 mm (12 in)which you lead through the holes in the float plate.
Fig.3:Guidance of the float
The connection cable can influence the float position of the measuring
system and therefore adulterate the measuring result.
If possible,use a light,flexible connection cable and fasten the cable
with a cable holder.In case of considerable height differences of the
float,you should use a light helix cable.
Product movements can influence the measurement.In this case,use
a signal conditioning instrument with adjustable damping to avoid
fluctuations of the measured value.
There is a danger of static charging on the plastic floating body.
Avoid friction
No dry cleaning
Do not mount in areas with flowing,non-conductive products
Guidance
Connection cable
Product movements
Static charges
Float for oil/water detection •for VEGACAP 63 7
4Mounting
31595-EN-100604

5Connect the sensor
5.1Preparing the connection
Follow the instructions in the operating instructions manual of the
sensor.
The connection cable can influence the floating position of the
measuring system.For this reason,use a light,flexible connection
cable and fasten the cable on a cable holder.
5.2Connection procedure
The electrical connection is described in the operating instructions of
the sensor.
8Float for oil/water detection •for VEGACAP 63
5Connect the sensor
31595-EN-100604

6Setup
6.1Setup
Setup is carried out according to the operating instructions manual of
the respective sensor.
Make sure that the measuring system is in the water for setup.
Tip:
If setup is not possible in the original vessel,then fill a suitable vessel
(øapprox.400 mm,height approx.150 mm)with water and place the
measuring system with float inside the vessel.The measuring result
can be transferred to the original vessel.
Proceed as follows:
1Connect probe and signal conditioning instrument
2Switch on power supply
3Turn the A/Bswitch on the signal conditioning instrument to
position B
The relay deenergizes if an oil layer is detected (safe condition)
0 10
5
521
on
1 2 43
5 6 7 8
9 10 11 12 13 14
on
min.
!
VEGATO R 621EX
0 10
5
1
2
Fig.4:Suitable signal conditioning instruments
1Potentiometer
2Relay control lamp
4Set potentiometer (1)to 0.The relay control lamp (2)lights.
5Turn the potentiometer (1)slowly clockwise until the relay control
lamp (2)extinguishes.
6Turn the potentiometer (1)very slowly anticlockwise until the relay
control lamp (2)lights.
Float for oil/water detection •for VEGACAP 63 9
6Setup
31595-EN-100604

Hence the measuring system is set very sensitively.An of oil layer
of 3-4mm is sufficient to switch the relay.
Information:
To make the measuring system less sensitive,you have to turn the
potentiometer anticlockwise.
The more the potentiometer is turned back,the higher the light liquid
layer has to be to switch the relay.
We recommend connecting the level switch in such a way that the
switching circuit is open when there is a level signal,line break or
failure (safe condition).
An open switch symbol corresponds hence in the following drawing to
the detection of a liquid.
A
C
1
2
B
Fig.5:Switching status of the measuring system
A No liquid present
B Water
C Oil layer on water
1Liquid level water
2Liquid level oil >4mm (>0.157 in)
10 Float for oil/water detection •for VEGACAP 63
6Setup
31595-EN-100604