KROHNE OPTISWITCH 3000 C User manual

Operating Instructions
OPTISWITCH 3000 C
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
2.4CE conformity ......................... 5
3Product description
3.1Configuration.......................... 6
3.2Principle of operation.................... 6
3.3Operation ............................ 7
3.4Storage and transport ................... 7
4Mounting
4.1General instructions..................... 9
4.2Mounting instructions.................... 10
5Connecting to voltage supply
5.1Preparing the connection ................. 13
5.2Connection steps....................... 13
5.3Wiring plan,single chamber housing......... 14
6Set up
6.1General.............................. 16
6.2Adjustment elements .................... 17
6.3Function chart ......................... 18
7Maintenance and fault rectification
7.1Maintenance .......................... 20
7.2Rectify faults .......................... 20
7.3Exchange the electronics ................. 21
7.4Instrument repair ....................... 22
8Dismounting
8.1Dismounting procedure .................. 23
8.2Disposal ............................. 23
9Supplement
9.1Technical data......................... 24
2OPTISWITCH 3000 C-with two-wire output
Contents
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9.2Dimensions ........................... 26
9.3Certificates ........................... 27
Supplementary operating instructions manuals
Information:
OPTISWITCH 3000 Cis available in different versions.
Depending on the selected version,supplementary operating
instructions manuals may also come with the shipment.The
supplementary operating instructions manuals are listed in
section "Product description.
Operating instructions manuals for accessories and
replacement parts
Tip:
To ensure reliable setup and operation of your OPTISWITCH
3000 C,we offer accessories and replacement parts.The
associated documents are:
lOperating instructions manual "Oscillator"
OPTISWITCH 3000 C-with two-wire output 3
Contents
30061-EN-060830

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: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.
4OPTISWITCH 3000 C-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
OPTISWITCH 3000 Cis a sensor for level detection.
Detailed information on the application range of OPTISWITCH
3000 Cis 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
OPTISWITCH 3000 Cis 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
OPTISWITCH 3000 Cis in CE conformity with EMC (89/336/
EWG), fulfils NAMUR recommendation NE 21 and is in CE
conformity with LVD (73/23/EWG).
Conformity has been judged according to the following
standards:
lEMC:
-Emission EN 61326:1997 (class B)
-Susceptibility EN 61326:1997/A1:1998
lLVD:EN 61010-1:2001
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For your safety
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3Product description
3.1Configuration
The scope of delivery encompasses:
lOPTISWITCH 3000 Clevel sensor
lDocumentation
-this operating instructions manual
-Supplementary instructions manual "Plug connector for
level sensors"(optional)
OPTISWITCH 3000 Cconsists of the following components:
lHousing cover
lHousing with electronics
lprocess fitting with tuning fork
1
2
3
Fig.1:OPTISWITCH 3000 Cwith plastic housing
1Housing cover
2Housing with electronics
3Process fitting
3.2Principle of operation
OPTISWITCH 3000 Cis a level sensor with tuning fork for level
detection.
It is designed for industrial use in all areas of process
technology and is preferably used for bulk solids.
Typical applications are overfill and dry run protection.Thanks
to its simple and robust measuring system,OPTISWITCH
3000 Cis virtually unaffected by the chemical and physical
properties of the bulk solid.
It functions even when exposed to strong external vibration or
changing products.
Scope of delivery
Components
Area of application
6OPTISWITCH 3000 C-with two-wire output
Product description
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Fault monitoring
The electronics of OPTISWITCH 3000 Ccontinuously mon-
itors the following criteria:
lCorrect vibrating frequency
lLine break to the piezo drive
If one of these faults is detected,the electronics signals this via
adefined current to the signal conditioning instrument.The
connection cable to the vibrating element is also monitored.
The tuning fork is piezoelectrically energised and vibrates at its
mechanical resonance frequency of approx.150 Hz.When the
tuning fork is submerged in the product,the vibration
amplitude changes.This change is detected by the integrated
oscillator and converted into a switching command.
Depending on your requirements,OPTISWITCH 3000 Cwith
two-wire electronics can be connected to different signal
conditioning instruments.Compatible signal conditioning in-
struments are listed under "Technical data".
The exact range of the power supply is stated in the "Technical
data"in the "Supplement".
3.3Operation
OPTISWITCH 3000 Ccan detect products with a density
>0.08 g/cm³(>0.003 lbs/in³).
On the electronics module you will find the following indicating
and adjustment elements:
lsignal lamp for indication of the switching condition (green/
red)
lmode switch for selection of the output current
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 55439.
The packaging of standard instruments consists of environ-
ment-friendly,recyclable cardboard.In addition,the sensor is
provided with a protective cover of cardboard.For special
versions PE foam or PE foil is also used.Dispose of the
packaging material via specialised recycling companies.
Physical principle
Power supply
Packaging
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Product description
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lStorage and transport temperature see "Supplement -
Technical data -Ambient conditions"
lRelative humidity 20 …85 %
Storage and transport tem-
perature
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Product description
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4Mounting
4.1General instructions
In general,OPTISWITCH 3000 Ccan be mounted in any
position.The instrument must be mounted in such a way that
the vibrating element is at the height of the requested switching
point.
Use the recommended cables (see chapter "Connecting to
power supply")and tighten the cable gland.
You can give your OPTISWITCH 3000 Cadditional 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 mounting
outdoors,in areas where moisture is expected (e.g.by
cleaning processes)or on cooled or heated vessels.
Fig.2:Measures against moisture penetration
Do not hold OPTISWITCH 3000 Con the vibrating element.
The sensor can be damaged by the weight of the instrument.
Remove the protective cover just before mounting.
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 stated in the "Technical
data"in the "Supplement"or on the type label of the sensor.
The vibrating level switch is a measuring instrument and must
be treated accordingly.Bending the vibrating element will
destroy the instrument.
Switching point
Moisture
Transport
Pressure/Vacuum
Handling
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Mounting
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Warning:
The housing must not be used to screw in the instrument!
Applying tightening force on the housing can damage its
internal mechanical parts.
To screw in,use the hexagon above the thread.
4.2Mounting instructions
The vibrating element 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.
Mount the instrument in such a way that the tuning fork does
not protrude directly into the filling stream.
20°
a. b.
Fig.3:Horizontal mounting
aConvex mounting
bConcave mounting
If such an installation location should be necessary,mount a
suitable protective sheet above or in front of the vibrating
element -see illustration a.).
In abrasive solids,mounting according to illustration b.has
proven.Aspout forms in the concave protective sheet
preventing wear of the protective sheet.
Socket
Filling opening
10 OPTISWITCH 3000 C-with two-wire output
Mounting
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