Page 1
Operating Instructions
OPTISWITCH 3300 C
with NAMUR output
Page 2
Contents
Contents
1 About this document
1.1 Function .............................
1.2 Target group ..........................
1.3 Symbolism used .......................
2 For your safety
2.1 Authorised personnel....................
2.2 Appropriate use........................
2.3 Warning about misuse ...................
2.4 CE conformity .........................
2.5 SIL conformity .........................
2.6 Safety instructions for Ex areas ............
3 Product description
3.1 Configuration..........................
3.2 Principle of operation ....................
3.3 Operation ............................
3.4 Storage and transport ...................
4 Mounting
4.1 General instructions.....................
4.2 Mounting instructions....................
4
4
4
5
5
5
5
6
6
7
7
8
9
10
11
5 Connecting to voltage supply
5.1 Preparing the connection .................
5.2 Connection steps.......................
5.3 Wiring plan, single chamber housing.........
6 Set up
6.1 General..............................
6.2 Adjustment elements ....................
6.3 Function chart .........................
6.4 Recurring function test ...................
7 Maintenance and fault rectification
7.1 Maintenance ..........................
7.2 Rectify faults ..........................
7.3 Exchange the electronics .................
7.4 Instrument repair .......................
8 Dismounting
8.1 Dismounting procedure ..................
8.2 Disposal .............................
2 OPTISWITCH 3300 C - with NAMUR output
16
16
17
20
20
21
22
25
25
26
28
29
29
31358-EN-060830
Page 3
9 Supplement
9.1 Technical data.........................
9.2 Dimensions ...........................
Contents
30
34
Supplementary operating instructions manuals
Information:
OPTISWITCH 3300 C is 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
3300 C, we offer accessories and replacement parts. The
associated documents are:
l Operating instructions manual "Oscillator"
l Operating instructions manual "Lock fitting"
31358-EN-060830
OPTISWITCH 3300 C - with NAMUR output 3
Page 4
About this document
1 About this document
1.1 Function
This operating instructions manual has all the information you
need for quick setup and safe operation. Please read this
manual before you start setup.
1.2 Target 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.
1.3 Symbolism 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.
l List
The dot set in front indicates a list with no implied sequence.
à Action
This arrow indicates a single action.
1 Sequence
Numbers set in front indicate successive steps in a procedure.
4 OPTISWITCH 3300 C - with NAMUR output
31358-EN-060830
Page 5
For your safety
2 For your safety
2.1 Authorised 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.
2.2 Appropriate use
OPTISWITCH 3300 C is a sensor for level detection.
Detailed information on the application range of OPTISWITCH
3300 C is available in chapter "Product description".
2.3 Warning 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.
2.4 General safety instructions
OPTISWITCH 3300 C 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.
2.5 CE conformity
OPTISWITCH 3300 C is 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:
l EMC:
- Emission EN 61326: 1997 (class B)
- Susceptibility EN 61326: 1997/A1:1998
l LVD: EN 61010-1: 2001
31358-EN-060830
OPTISWITCH 3300 C - with NAMUR output 5
Page 6
For your safety
2.6 SIL conformity
OPTISWITCH 3300 C fulfills the requirements of functional
safety according to IEC 61508/IEC 61511. You can find further
information in the supplementary instructions manual "Safety
Manual - Functional safety (SIL) OPTISWITCH 3XXX".
2.7 Safety instructions for Exareas
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 Exapproved instruments.
6 OPTISWITCH 3300 C - with NAMUR output
31358-EN-060830
Page 7
3 Product description
3.1 Configuration
Product description
Scope of delivery
Components
The scope of delivery encompasses:
l OPTISWITCH 3300 C level sensor
l Documentation
- this operating instructions manual
- Supplementary instructions manual "Plug connector for
level sensors" (optional)
- Ex specific safety instructions (with Ex versions), if
necessary further certificates
OPTISWITCH 3300 C consists of the following components:
l Housing cover
l Housing with electronics
l process fitting with tuning fork
1
2
3
Fig. 1: OPTISWITCH 3300 C with plastic housing
1 Housing cover
2 Housing with electronics
3 Process fitting
3.2 Principle of operation
Area of application
31358-EN-060830
OPTISWITCH 3300 C - with NAMUR output 7
OPTISWITCH 3300 C is a level sensor with tuning fork for level
detection.
Page 8
Product description
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
3300 C is virtually unaffected by the chemical and physical
properties of the bulk solid.
It functions even when exposed to strong external vibration or
changing products.
Solid detection in water
If OPTISWITCH 3300 C was ordered for detection of solids in
water, the tuning fork is adjusted to the density of water. In the
air or when covered by water (density: 1 g/cm³/0.036 lbs/in)
OPTISWITCH 3300 C signals "uncovered". Only if the
vibrating element is also covered with solids (e.g. sand,
sludge, gravel etc.) will the sensor signal "covered".
Fault monitoring
The electronics of OPTISWITCH 3300 C continuously monitors the following criteria:
l Correct vibrating frequency
l Line 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.
Physical principle
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.
Power supply
OPTISWITCH 3300 C with NAMUR electronics can be
connected to different NAMUR amplifiers depending on your
requirements. The specifications for NAMUR amplifiers are
available in the "Technical data".
The exact range of the power supply is stated in the "Technical
data" in the "Supplement".
3.3 Operation
With the factory setting, products with a density of >0.02 g/cm³
(>0.0008 lbs/in³) can be measured. The instrument can also
be adapted to products with lower density >0.008 g/cm³
(>0.0003 lbs/in³).
8 OPTISWITCH 3300 C - with NAMUR output
31358-EN-060830
Page 9
Product description
On the electronics module you will find the following indicating
and adjustment elements:
l signal lamp for indication of the switching condition (yellow)
l potentiometer for adaptation to the product density
l Mode switch to select the switching condition (reverse
characteristics)
l Simulation key
3.4 Storage and transport
Packaging
Storage and transport tem-
perature
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.
l Storage and transport temperature see "Supplement -
Technical data - Ambient conditions"
l Relative humidity 20 … 85 %
31358-EN-060830
OPTISWITCH 3300 C - with NAMUR output 9
Page 10
Mounting
4 Mounting
4.1 General instructions
Switching point
Moisture
In general, OPTISWITCH 3300 C can 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 3300 C 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 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
Transport
Do not hold OPTISWITCH 3300 C on the vibrating element.
Especially with flange and tube versions, the sensor can be
damaged by the weight of the instrument.
Remove the protective cover just before mounting.
Pressure/Vacuum
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.
10 OPTISWITCH 3300 C - with NAMUR output
31358-EN-060830
Page 11
Mounting
Handling
Agitators and fluidization
The vibrating level switch is a measuring instrument and must
be treated accordingly. Bending the vibrating element will
destroy the instrument.
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.
4.2 Mounting 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 extension tube for OPTISWITCH 3300 C,
but check if you can mount a short level switch on the side of
the vessel in horizontal position.
Extreme vibration caused by the process or the equipment, e.
g. agitators or turbulence in the vessel e.g. from fluidization,
can cause the extension tube of OPTISWITCH 3300 C to
vibrate in resonance. This leads to increased stress on the
upper weld joint. Should a longer tube version be necessary,
you can provide a suitable support or guy directly above the
tuning fork to secure the extension tube.
This measure applies particularly to applications in Ex areas.
Make sure that the tube is not subjected to bending forces
through this measure.
Inflowing medium
If OPTISWITCH 3300 C is mounted in the filling stream,
unwanted switching signals may be generated. Mount OPTI-
SWITCH 3300 C at a location in the vessel where no disturbing
influence from e.g. filling openings, agitators etc. can occur.
This applies particularly to instrument types with long
extension tube.
31358-EN-060830
OPTISWITCH 3300 C - with NAMUR output 11
Page 12
Mounting
Fig. 3: Inflowing medium
Lock fitting
Socket
Material cone
OPTISWITCH 3300 C can be mounted with a lock fitting for
height adjustment. Take note of the pressure information of the
lock fitting.
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.
In silos for bulk solids, material cones can form and change the
switching point. Please keep this in mind when installing the
sensor in the vessel. We recommend selecting an installation
location where the vibrating fork detects an average value of
the material cone.
The tuning fork must be mounted at a location 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.
31358-EN-060830
12 OPTISWITCH 3300 C - with NAMUR output
Page 13
Mounting
d
6
d d
Fig. 4: Filling and emptying centered
d
6
6
d
1
2
d
3
Fig. 5: Filling in the center, emptying laterally
1 OPTISWITCH 3300 C
2 Emptying opening
3 Filling opening
31358-EN-060830
OPTISWITCH 3300 C - with NAMUR output 13
Page 14
Mounting
Flows
To minimise flow resistance caused by the tuning fork,
OPTISWITCH 3300 C should be mounted in such a way that
the surfaces of the blades are parallel to the product
movement.
1
2
Fig. 6: Orientation of the tuning fork in case of flow
1 Marking with screwed version
2 Direction of flow
Baffle protection against falling rocks
In applications such as grit chambers or settling basins for
coarse sediments, the vibrating element must be protected
against damage with a suitable baffle.
This baffle must be manufactured by you.
14 OPTISWITCH 3300 C - with NAMUR output
31358-EN-060830
Page 15
>125
Fig. 7: Baffle protection against damages
Mounting
31358-EN-060830
OPTISWITCH 3300 C - with NAMUR output 15
Page 16
Connecting to voltage supply
5 Connecting to voltage supply
5.1 Preparing the connection
Note safety instructions
Take note of safety
instructions for Ex
applications
Select power supply
Selecting the connection ca-
ble
Generally not the following safety instructions:
l Connect 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 according to the following diagrams.
Take note of the general installation regulations. As a rule,
connect OPTISWITCH 3300 C 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 off
electrostatic charges. In Ex 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".
OPTISWITCH 3300 C is connected with standard cable with
round cross-section. An outer cable diameter of 5 … 9 mm
(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
OPTISWITCH 3300 C.
Select connection
cable for Ex applications
Take note of the corresponding installation regulations for Ex
applications.
5.2 Connection steps
With Ex instruments, the housing cover may only be opened if
there is no explosive atmosphere present.
Proceed as follows:
1 Unscrew the housing cover
2 Loosen compression nut of the cable entry
16 OPTISWITCH 3300 C - with NAMUR output
31358-EN-060830
Page 17
Connecting to voltage supply
3 Remove approx. 10 cm (4 in) of the cable mantle, strip
approx. 1 cm (0.4 in) insulation from the ends of the
individual wires
4 Insert the cable into the sensor through the cable entry
5 Lift the opening levers of the terminals with a screwdriver
(see following illustration)
6 Insert the wire ends into the open terminals according to
the wiring plan
7 Press the opening lever of the terminals downward, you will
hear the terminal spring closing
8 Check the hold of the wires in the terminals by lightly
pulling on them
9 Tighten 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 back on
The electrical connection is hence finished.
Fig. 8: Connection steps 5 and 6
5.3 Wiring plan, single chamber housing
The following illustrations apply to the non-Ex as well as to the
EEx d version.
31358-EN-060830
OPTISWITCH 3300 C - with NAMUR output 17
Page 18
Connecting to voltage supply
Housing overview
Electronics and connection
compartment
44
1
Fig. 9: Material versions, single chamber housing
1 Plastic
2 Aluminium
3 Stainless steel
4 Filter element for pressure compensation
6
2 3
VB60N
NAMUR IEC 60947-5-6
Simulation
5
4
1
2
3
4
Fig. 10: Electronics and connection compartment
1 Potentiometer for switching point adaptation
2 DIL switch for characteristics reversal
3 Simulation key
4 Ground terminal
5 Screwed terminals
6 Control lamp
Wiring plan
For connection of the amplifier according to NAMUR
(IEC 60947-5-6, EN 50227). You find further information in the
"Technical data" in the "Supplement".
Further information you will find in the "Technical data" in the
"Supplement", "Ex technical data" are specified in the attached
"Safety instructions manual".
18 OPTISWITCH 3300 C - with NAMUR output
31358-EN-060830
Page 19
Connecting to voltage supply
++-
1 2
-
Fig. 11: Wiring plan, single chamber housing
External simulation key
In addition to the test key on the oscillator, you can connect an
external key to start the test procedure. Connect the key
according to the following wiring plan. In shipping condition,
terminals 3 and 4 are bridged.
For additional information see "Recurring function test".
+-
1234
2
+
3
-
1
Fig. 12: Wiring plan - External simulation key
1 NAMUR amplifier
2 Bridge
3 External simulation key
31358-EN-060830
OPTISWITCH 3300 C - with NAMUR output 19
Page 20
Set up
6 Set up
6.1 General
The numbers in brackets refer to the following illustrations.
Function/Configuration
On the electronics module you will find the following indicating
and adjustment elements:
l Potentiometer for switching point adaptation (1)
l DIL switch for mode adjustment - min./max.(2)
l Simulation key (3)
l Signal lamp (6)
6.2 Adjustment elements
1
6
5
VB60N
NAMUR IEC 60947-5-6
Simulation
2
3
4
Fig. 13: Oscillator WE60N - NAMUR output
1 Potentiometer for switching point adaptation
2 DIL switch for characteristics reversal
3 Simulation key
4 Ground terminal
5 Screwed terminals
6 Control lamp
Switching point adaptation (1)
You can adapt the switching point to the solid with the
potentiometer. The switching point is preset and covered by a
label. It must only be modified in special cases.
By default, the potentiometer of OPTISWITCH 3300 C is set to
the right stop (>0.02 g/cm³ or >0.0008 lbs/in³). In case of very
20 OPTISWITCH 3300 C - with NAMUR output
31358-EN-060830
Page 21
Set up
light-weight solids, turn the potentiometer to the left stop
(>0.008 g/cm³ or >0.0003 lbs/in³). OPTISWITCH 3300 C will
thus be more sensitive and can detect light-weight solids more
reliably.
For instruments detecting solids in water, these values are not
applicable. The potentiometer is preset and must not be
changed.
Characteristics reversal (2)
Simulation key (3)
Signal lamp (6)
The characteristics reversal can be carried out with the DIL
switch. You can choose between falling characteristic curve
(switch position max.) and rising characteristic curve (switch
position min.). This allows you to output the desired current.
Modes
l min.-rising characteristic curve (High current when
immersed)
l max.-falling characteristics (Low current when immersed)
The NAMUR output can be switched over to falling or rising
characteristics (see also "Function chart").
The simulation key is located in a recess on the upper side of
the oscillator. Push the simulation key with a suitable object
(screwdriver, pen, etc.).
When the key is pushed, a line break between sensor and
processing unit is simulated. The signal lamp on the sensor
extinguishes. The measuring system must signal a fault and
take on a safe condition when the key is pushed.
Keep in mind that the connected (downstream) instruments will
be activated during operation. This allows you to check the
correct function of the measuring system.
Control lamp (LED) for indication of the switching condition
l yellow = High current >=2.2 mA
l dark = Low current <=1 mA
l yellow (flashing) = Failure <=1 mA
6.3 Function chart
OPTISWITCH 3300 C level switch
The following chart provides an overview of the switching
conditions depending on the adjusted mode and level.
31358-EN-060830
OPTISWITCH 3300 C - with NAMUR output 21
Page 22
Set up
Note:
The mode on the NAMUR amplifier must be set so that the
switching output goes to safe condition in case a fault
message is received (I <=1 mA).
Level Signal current -
Falling characteristics max.
Falling characteristics max.
Rising characteristics min.
Rising characteristics min.
Failure any <=1.0 mA
Sensor
>=2.2 mA
<=1.0 mA
>=2.2 mA
<=1.0 mA
Control lamp
flashes
6.4 Recurring function test
According to IEC 61508.
OPTISWITCH 3300 C is qualified in mode A (overfill
protection) for use in measuring chains of stage SIL2
according to IEC 61508 (redundant, stage SIL3).
SIL
The following instrument combinations meet the requirements
according to SIL:
OPTISWITCH 3300 C
l Oscillator VBE60N
Recurring function test
The recurring test according to IEC 61508 can be carried out
by pushing the simulation key on the oscillator or by briefly (>2
seconds) interrupting the cable to the sensor. The correct
22 OPTISWITCH 3300 C - with NAMUR output
31358-EN-060830
Page 23
Set up
sequence of the switching conditions must be monitored via
the switching amplifier as well as the connected systems. The
sensor must neither be removed nor response must be
triggered by filling the vessel. This applies to OPTISWITCH
3300 C with NAMUR oscillator VBE60N.
You can carry out the function test with the outputted current
values also directly with a safety PLC or a process control
system.
Simulation key on the electronics module
For measurement setups in conjunection with the NAMUR
oscillator VBE60N, a function test can be carried out. The
integration time must be set to 0.5 s. OPTISWITCH 3300 C
has an integrated simulation key. The simulation key is
lowered on the oscillator. Push the simulation key for >2
seconds.
If OPTISWITCH 3300 C is connected to an SPLC, you have to
interrupt the connection cable to the sensor for >2 seconds.
After releasing the simulation key or briefly interrupting the
connection cable to the sensor, you can check the complete
measuring system on correct function. A switching procedure
is simulated during the test.
I/mA
2,2
1
3 4,5 t/s
Fig. 14: Flow chart of the function test
1 Full signal
2 Empty signal
1
2
Check if all the switching conditions occur in the correct
sequence and the stated time period. If this is not the case,
there is a fault in the measuring system. Keep in mind that
connected instruments are activated during the function test.
This allows you to check the correct function of the measuring
system.
31358-EN-060830
OPTISWITCH 3300 C - with NAMUR output 23
Page 24
Set up
Test procedure
1. Low Current
(approx. 3 s)
2. High Current
(approx. 1.5 s)
3. Return to the actual operating condition
(after releasing the simulation key)
Sensor current
approx. 1 mA energized currentless
approx.
2.2 mA
Level relay
amplifier overfill protection
currentless energized
Level relay
amplifier dry run
protection
Signal lamp
amplifier overfill protection
Signal lamp
amplifier dry run
protection
Note:
When used in measuring chains according to IEC 61508,
mode B (dry run protection) is not permitted.
You can carry out the function test with the outputted current
values also directly with a safety PLC or a process control
system.
Signal
lamp sensor
24 OPTISWITCH 3300 C - with NAMUR output
31358-EN-060830
Page 25
Maintenance and fault rectification
7 Maintenance and fault rectification
7.1 Maintenance
When used as directed in normal operation, OPTISWITCH
3300 C is completely maintenance free.
7.2 Rectify faults
Causes of malfunction
Fault rectification
Checking the switching signal
OPTISWITCH 3300 C offers maximum reliability. Nevertheless
faults can occur during operation. These may be caused by the
following, e.g.:
l Sensor
l Process
l Power supply
l Signal processing
The first measure to be taken is to check the output signal. In
many cases, the causes can be determined this way and the
faults rectified.
? OPTISWITCH 3300 C signals "covered" when the vibrating
element is not submerged (overfill protection)
? OPTISWITCH 3300 C signals "uncovered" when the
vibrating element is submerged (dry run protection)
l Supply voltage too low
à Check the power supply
l Electronics defective
à Push the characteristics reversal switch. If the instru-
ment then changes the mode, the instrument may be
mechanically damaged. Should the switching function
in the correct mode still be faulty, return the instrument
for repair.
à Push the characteristics reversal switch. If the instru-
ment then does not change the mode, the oscillator
may be defective. Exchange the oscillator.
à Check if there is buildup on the vibrating element, and if
so, remove it.
l Unfavourable installation location
à Mount the instrument at a location in the vessel where
no dead zones or mounds can form.
à Check if the vibrating element is covered by buildup on
the socket.
31358-EN-060830
OPTISWITCH 3300 C - with NAMUR output 25
Page 26
Maintenance and fault rectification
l Wrong characteristics selected
à Set the correct characteristics on the characteristics
reversal switch (overfill protection; dry run protection).
Wiring should be carried out according to the quiescent
current principle.
? Signal lamp flashes yellow
l Fault in the electronics
à Exchange the electronics
? Signal lamp flashes yellow
l instrument defective
à Exchange instrument or return instrument for repair
7.3 Exchange the electronics
In general, all oscillators of series WE60 can be interchanged.
If you want to use an oscillator with a different signal output,
you can download the corresponding operating instructions
manual from our homepage under Downloads.
With EEx d instruments, the housing cover must only be
opened if there is no explosive atmosphere.
Proceed as follows:
1 Switch off power supply
2 Unscrew the housing cover
3 Lift the opening levers of the terminals with a screwdriver
4 Pull the connection cables out of the terminals
5 Loosen the two screws with a screw driver (Torx size T10
or slot 4)
26 OPTISWITCH 3300 C - with NAMUR output
31358-EN-060830
Page 27
Maintenance and fault rectification
1
2
Fig. 15: Loosen the screws
1 Electronics module
2 Screws (2 pcs.)
6 Remove the old oscillator
7 Compare the new oscillator with the old one. The type label
of the oscillator must correspond to that of the old
oscillator. This applies particularly to instruments used in
hazardous areas.
8 Compare the settings of the two oscillators. Set the
adjustment elements of the new oscillator to the same
setting of the old one.
Information:
Make sure that the housing is not rotated during the electronics
exchange. Otherwise the plug may be in a different position
later.
9 Insert the oscillator carefully. Make sure that the plug is in
the correct position.
10 Tighten the two screws with a screwdriver (Torx size T10
or slot 4).
11 Insert the wire ends into the open terminals according to
the wiring plan
12 Press the opening lever of the terminals downward, you will
hear the terminal spring closing
13 Check the hold of the wires in the terminals by lightly
pulling on them
14 Check the tightness of the cable entry. The seal ring must
completely encircle the cable.
15 Screw the housing cover back on
The electronics exchange is now finished.
31358-EN-060830
OPTISWITCH 3300 C - with NAMUR output 27
Page 28
Maintenance and fault rectification
7.4 Instrument repair
If a repair is necessary, please proceed as follows:
You can download a return form from our website
krohne-mar.com/fileadmin/media-lounge/PDF-Download/
Specimen_e.pdf.
By doing this you help us carry out the repair quickly and
without having to call back for needed information.
l Print and fill out one form per instrument
l Clean the instrument and pack it damage-proof
l Attach the completed form and possibly also a safety data
sheet to the instrument
http://www.
28 OPTISWITCH 3300 C - with NAMUR output
31358-EN-060830
Page 29
Dismounting
8 Dismounting
8.1 Dismounting procedure
Warning:
Before dismounting, be aware of dangerous process conditions such as e.g. pressure in the vessel, high temperatures,
corrosive or toxic products etc.
Take note of chapters "Mounting" and "Connecting to power
supply" and carry out the listed steps in reverse order.
With Ex instruments, the housing cover may only be opened if
there is no explosive atmosphere present.
8.2 Disposal
The instrument consists of materials which can be recycled by
specialised recycling companies. We use recyclable materials
and have designed the electronic modules to be easily
separable.
WEEE directive 2002/96/EG
This instrument is not subject to the WEEE directive 2002/96/
EG and the respective national laws (in Germany, e.g.
ElektroG). Pass the instrument directly on to a specialised
recycling company and do not use the municipal collecting
points. These may be used only for privately used products
according to the WEEE directive.
Correct disposal avoids negative effects to persons and
environment and ensures recycling of useful raw materials.
Materials: see "Technical data"
If you cannot dispose of the instrument properly, please
contact us about disposal methods or return.
31358-EN-060830
OPTISWITCH 3300 C - with NAMUR output 29
Page 30
Supplement
9 Supplement
9.1 Technical data
General data
Material 316L corresponds to 1.4404 or 1.4435
Materials, wetted parts
- Process fitting - thread 316L
- Process fitting - flange 316L
- Process seal Klingersil C-4400
- Tuning fork 316L
- Extension tube ø 43 mm (1.7 in) 316L
Materials, non-wetted parts
- Housing Plastic PBT (Polyester), Alu die-casting pow-
der-coated, 316L
- Seal ring between housing and
housing cover
- Ground terminal 316L
Weight
- with plastic housing 1500 g (53 oz)
- with Aluminium housing 1950 g (69 oz)
- with stainless steel housing 2300 g (81 oz)
- Extension tube approx. 2000 g/m (21.5 oz/ft)
NBR (stainless steel housing), silicone (
plastic housing)
Alu/
Sensor length 0.3 … 6 m (1 … 20 ft)
Output variable
Output Two-wire NAMUR output
Current consumption
- Falling characteristics (max.) >=2.2 mA uncovered/<=1 mA covered
ising characteristics (min.) <=1 mA uncovered/>=2.2 mA covered
- R
- Fault signal <=1 mA
Necessary processing system NAMUR processing system according to
IEC 60947-5-6 (EN 50227/DIN 19234)
Modes (NAMUR output adjustable to falling or rising characteristics)
- min. rising characteristics (High current when im-
mersed)
- max. falling characteristics (Low current when im-
mersed)
30 OPTISWITCH 3300 C - with NAMUR output
31358-EN-060830
Page 31
Supplement
Ambient conditions
Ambient temperature on the housing -40 … +80 °C (-40 … +176 °F)
Storage and transport temperature -40 … +80 °C (-40 … +176 °F)
Process conditions
Parameter Limit level of solids
Process pressure -1 … 16 bar/-100 … 1600 kPa (-14.5 … 232 psi)
2
16 bar
(232psi)
6 bar
(87psi)
-50˚C
(-58˚F)
Fig. 16: Process pressure - Product temperature
1 Product temperature
2 Process pressure
0˚C
(32˚F)
50˚C
(122˚F)
100˚C
(212˚F)
150˚C
(302˚F)
200˚C
(392˚F)
250˚C
(482˚F)
1
OPTISWITCH 3300 C of 316L -50 … +150 °C (-58 … +302 °F)
Process temperature (thread or flange
-50 … +250 °C (-58 … +482 °F)
temperature) with temperature adapter
(option)
31358-EN-060830
OPTISWITCH 3300 C - with NAMUR output 31
Page 32
Supplement
2
80˚C
(176˚F)
40˚C
(104˚F)
0˚C
(32˚F)
-50˚C
(-58˚F)
-40˚C
(-40˚F)
Fig. 17: Ambient temperature - Product temperature
1 Product temperature
2 Ambient temperature
3 Temperature range with temperature adapter
50˚C
(122˚F)
100˚C
(212˚F)
150˚C
(302˚F)
3
200˚C
(392˚F)
250˚C
(482˚F)
1
Density
- Standard >0.02 g/cm³ (0.0007 lbs/in³)
- adjustable >0.008 g/cm³ (0.0003 lbs/in³)
Electromechanical data
Cable entry/plug
1)
- Single chamber housing l 1x cable entry M20x1.5 (cable-ø 5 … 9 mm),
1x blind stopper M20x1.5
or:
l 1x closing cap ½ NPT, 1x blind plug ½ NPT
or:
l 1x plug (depending on the version), 1x blind
plug M20x1.5
Spring-loaded terminals for wire cross-section up to 1.5 mm²
(0.0023 in²)
Adjustment elements
Mode switch
- min. rising characteristics (High current when im-
mersed)
- max. falling characteristics (Low current when im-
mersed)
1)
Depending on the version M12x1, according to DIN 43650, Harting, Amphenol-Tuchel, 7/8" FF.
32 OPTISWITCH 3300 C - with NAMUR output
31358-EN-060830
Page 33
Supplement
Potentiometer for switching point adap-
0.02 … 0.1 g/cm³ (0.0007 … 0.036 lbs/in³)
tation
Simulation key simulation of a line break between sensor and
processing unit
Voltage supply
Supply voltage (standard characteristics)
Open-circuit voltage U
Shortcircuit current I
for connection to amplifier according to NAMUR IEC 60947-5-6, approx. 8.2 V
approx. 8.2 V
0
approx. 8.2 mA
U
Electrical protective measures
Protection IP 66/IP 67
Overvoltage category III
Protection class II
Approvals
2)
ATEX II 1G, 1/2G, 2GEExiaIIC T6 + ATEX II 1/2 DIP66 T
ATEX II 1/2G, 2GEExd d IIC T6
ATEX II 1/2 DIP66 T
3)
2)
Deviating data in Ex applications: see separate safety instructions.
3)
See temperature statements in the safety instructions manual
31358-EN-060830
OPTISWITCH 3300 C - with NAMUR output 33
Page 34
/
/
/
M20x1,5
½
/
½
/
½
Supplement
9.2 Dimensions
OPTISWITCH 3300 C
~ 69mm
23
(2
/32")
Fig. 18: Housing versions
1 Plastic housing
2 Stainless steel housing
3 Aluminium housing
ø 77mm
1
(3
/32")
M20x1,5
~ 116mm
9
/16")
(4
ø 84mm
(3
5
/16")
4
1
4
~ 69mm
23
/32")
(2
2
4
M20x1,5
ø 77mm
1
(3
/32")
4
4
34 OPTISWITCH 3300 C - with NAMUR output
31358-EN-060830
Page 35
Supplement
")
64
/
19
33mm
")
64
/
55
22mm
(
L
(1
G1½A
ø 43mm (1 11/16")
")
32
/
29
150mm (5
Fig. 19: OPTISWITCH 3300 C, threaded version G1½ A
L = Sensor length, see "Technical data"
31358-EN-060830
OPTISWITCH 3300 C - with NAMUR output 35
Page 36
Supplement
Fig. 20: Temperature adapter
")
64
/
1
178mm (7
ø 34mm (1 11/32")
36 OPTISWITCH 3300 C - with NAMUR output
31358-EN-060830
Page 37
Supplement
31358-EN-060830
OPTISWITCH 3300 C - with NAMUR output 37
Page 38
Supplement
38 OPTISWITCH 3300 C - with NAMUR output
31358-EN-060830
Page 39
Supplement
31358-EN-060830
OPTISWITCH 3300 C - with NAMUR output 39
Page 40
Subject to change without notice
31358-EN-060830
Loading...