Siemens SITRANS LVL100 User manual

Operating Instructions ·April 2008
SITRANS LVL100

Content
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 approval markings and safety tips . . . . . 6
2.6CE conformity . . . . . . . . . . . . . . . . . . . . . . . . . 6
3Product description
3.1Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2Principle of operation. . . . . . . . . . . . . . . . . . . . 8
3.3Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.4Storage and transport . . . . . . . . . . . . . . . . . . . 9
4Mounting
4.1General instructions. . . . . . . . . . . . . . . . . . . . . 10
4.2Mounting instructions. . . . . . . . . . . . . . . . . . . . 12
5Connecting to power supply
5.1Preparing the connection . . . . . . . . . . . . . . . . . 15
5.2Wiring plan . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6Set up
6.1Indication of the switching status . . . . . . . . . . . 18
6.2Function test . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.3Functional chart. . . . . . . . . . . . . . . . . . . . . . . . 19
7Maintenance and fault rectification
7.1Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.2Remove interferences . . . . . . . . . . . . . . . . . . . 20
7.3Exchange electronics. . . . . . . . . . . . . . . . . . . . 21
7.4Instrument repair . . . . . . . . . . . . . . . . . . . . . . . 23
8Dismounting
8.1Dismounting steps . . . . . . . . . . . . . . . . . . . . . . 24
8.2Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2SITRANS LVL100 lCONTACTLESS ELECTRONIC SWITCH
Content
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9Supplement
9.1Technical data. . . . . . . . . . . . . . . . . . . . . . . . . 25
9.2Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
SITRANS LVL100 lCONTACTLESS ELECTRONIC SWITCH 3
Content
33843-EN-080421

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
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 malfunc-
tions 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.
4SITRANS LVL100 lCONTACTLESS ELECTRONIC SWITCH
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 plant operator.
During work on and with the device the required personal
protection equipment must always be worn.
2.2Appropriate use
SITRANS LVL100 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.
SITRANS LVL100 lCONTACTLESS ELECTRONIC SWITCH 5
For your safety
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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.
2.5Safety approval markings and safety tips
The safety approval markings and safety tips on the device
must be observed.
2.6CE conformity
SITRANS LVL100 is in CE conformity with EMC (89/336/
EWG), fulfils NAMUR recommendation NE 21 and NE 23 and
is in CE conformity with NSR (73/23/EG).
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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3Product description
3.1Configuration
The scope of delivery encompasses:
lSITRANS LVL100 point level sensor
lTest magnet
lDocumentation
-this operating instructions manual
-if necessary,certificates
SITRANS LVL100 consists of the following components:
lHousing with electronics
lprocess fitting with tuning fork
Fig.1:SITRANS LVL100
The type label contains the most important data for identi-
fication and use of the instrument:
lArticle number
lSerial number
Scope of delivery
Components
Type label
SITRANS LVL100 lCONTACTLESS ELECTRONIC SWITCH 7
Product description
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lTechnical data
lArticle numbers,documentation
3.2Principle of operation
SITRANS LVL100 is a point level sensor with tuning fork for
level detection.
It is designed for industrial use in all areas of process
technology and can be used in liquids.
Typical applications are overfill and dry run protection.With a
tuning fork of only 40 mm length,SITRANS LVL100 can be
also mounted,e.g.in pipelines from DN 25.The small tuning
fork allows use in vessels,tanks and pipes.Thanks to its
simple and robust measuring system,SITRANS LVL100 is
virtually unaffected by the chemical and physical properties of
the liquid.
It functions even under difficult conditions such as turbulence,
air bubbles,foam generation,buildup,strong external vibration
or changing products.
Fault monitoring
The electronics module of SITRANS LVL100 continuously
monitors via frequency evaluation the following criteria:
lStrong corrosion or damage on the tuning fork
lloss of vibration
lLine break to the piezo drive
If a malfunction is detected or in case of power failure,the
electronics takes on a defined switching condition,i.e.the
contactless electronic switch opens (safe condition).
The tuning fork is piezoelectrically energised and vibrates at its
mechanical resonance frequency of approx.1200 Hz.The
piezos are fixed mechanically and are hence not subject to
temperature shock limitations.The frequency changes when
the tuning fork is covered by the medium.This change is
detected by the integrated oscillator and converted into a
switching command.
SITRANS LVL100 is a compact instrument,i.e.it can be
operated without external evaluation system.The integrated
electronics evaluates the level signal and outputs a switching
signal.With this switching signal,a connected device can be
operated directly (e.g.a warning system,aPLC,a pump etc.).
Area of application
Functional principle
Supply voltage
8SITRANS LVL100 lCONTACTLESS ELECTRONIC SWITCH
Product description
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Data for power supply are specified in chapter "Technical
data".
3.3Operation
The switching status of SITRANS LVL100 can be checked with
closed housing (signal lamp). Products with a density >0.7g/
cm³(0.025 lbs/in³)can be detected.
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 environ-
ment-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 instruc-
tions 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 "Supplement -
Technical data -Ambient conditions"
lRelative humidity 20 …85 %
Packaging
Transport
Transport inspection
Storage
Storage and transport
temperature
SITRANS LVL100 lCONTACTLESS ELECTRONIC SWITCH 9
Product description
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4Mounting
4.1General instructions
In general,SITRANS LVL100 can be installed in any position.
The instrument simply has be mounted in such a way that the
tuning fork is at the height of the desired switching point.
The tuning fork has lateral marking (notches), marking the
switching point with vertical mounting.The switching point
refers to water (1g/cm³/0.036 lbs/in³). When mounting
SITRANS LVL100,make sure that this marking is at the height
of the requested switching point.Keep in mind that the
switching point of the instrument is shifted if the medium has a
density other than water.
2
3
1
13mm
(33/64")
13mm
(33/64")
Fig.2:Vertical mounting
1Switching point approx.13 mm (0.51 in)
2Switching point with lower density
3Switching point with higher density
Switching point
10 SITRANS LVL100 lCONTACTLESS ELECTRONIC SWITCH
Mounting
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1
2
Fig.3:Horizontal mounting
1Switching point
2Switching point (recommended mounting position,particularly for adhesive
products)
Use the recommended cables (see chapter "Connecting to
power supply")and tighten the cable gland.
You can give your SITRANS LVL100 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.4:Measures against moisture penetration
Do not hold SITRANS LVL100 on the tuning fork.
Moisture
Transport
SITRANS LVL100 lCONTACTLESS ELECTRONIC SWITCH 11
Mounting
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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.
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 the instrument in!
Applying tightening force can damage internal parts of the
housing.
Use the hexagon above the thread for screwing in.
4.2Mounting instructions
For welded socket with O-ring in front and welding marking.
SITRANS LVL100 has a defined thread outlet.This means that
every SITRANS LVL100 is in the same position after being
screwed in.Remove therefore the supplied flat seal from the
thread of SITRANS LVL100.This flat seal is not required when
using a welded socket with front-flush seal.
Before welding,unscrew SITRANS LVL100 and remove the
rubber ring from the welded socket.
The welded socket has a marking (notch). For horizontal
mounting,weld the socket with the notch facing upward or
downward;in pipelines aligned with the direction of flow.
Pressure/Vacuum
Handling
Welded socket
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Mounting
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1
Fig.5:Marking on the welded socket
1Marking
In case of horizontal mounting in adhesive and viscous
products,the surfaces of the tuning fork should be vertical in
order to reduce buildup on the tuning fork.The position of the
tuning fork is indicated by a marking on the hexagon of
SITRANS LVL100.With this,you can check the position of the
tuning fork when screwing it in.When the hexagon touches the
seal,the thread can still be turned by approx.half a turn.This
is sufficient to reach the recommended installation position.
In adhesive and viscous products,the surfaces of the tuning
fork should protrude into the vessel to avoid buildup.Therefore
sockets for flanges and mountings bosses should not exceed
a certain length.
30mm
(1 3/16")
Fig.6:Adhesive products
Adhesive products
SITRANS LVL100 lCONTACTLESS ELECTRONIC SWITCH 13
Mounting
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IfSITRANS LVL100 is mounted in the filling stream,unwanted
false measurement signals can be generated.For this reason,
mount SITRANS LVL100 at a position in the vessel where no
disturbances,e.g.from filling openings,agitators,etc., can
occur.
To minimise flow resistance caused by the tuning fork,
SITRANS LVL100 should be mounted in such a way that the
surfaces of the blades are parallel to the product movement.
Inflowing medium
Flows
14 SITRANS LVL100 lCONTACTLESS ELECTRONIC SWITCH
Mounting
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5Connecting to power supply
5.1Preparing the connection
Always keep in mind the following safety instructions:
lConnect only in the complete absence of line voltage
SITRANS LVL100 is connected with standard cable with round
cross section.Select the outer diameter of the cable
respectively so that the seal effect of the cable gland is
ensured.
lValve plug DIN 43650,ø4.5…7mm
Use cable with a round wire cross section and tighten the
cable gland.
When mounting outdoors,on cooled vessels or in humid
areas,in which cleaning is carried out e.g.with steam or high
pressure,it is particularly important to seal the cable gland.
5.2Wiring plan
Valve plug DIN 43650
For this plug version,standard cable with round wire cross-
section can be used.Cable diameter 4.5…7mm,protection
IP 65.
Note safety instructions
Selecting connection
cable
Cable gland
Plug
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Connecting to power supply
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1
4
5
6
7
8
9
10
2 3
Fig.7:Connection,valve plug DIN 43650
1Pressure screw
2Pressure disc
3Seal ring
4Fixing screw
5Seal washer
6Plug housing
7Plug insert
8Profile seal
9Control lamp
10 SITRANS LVL100
We recommend connecting SITRANS LVL100 in such a way
that the switching circuit is open when there is a level signal,
line break or failure (safe condition).
Warning:
The instrument must not be operated without an intermediately
connected load,because the electronics would be destroyed if
connected directly to the mains.It is not suitable for connection
to low voltage PLC inputs.
For direct control of relays,contactors,magnet valves,warning
lights,horns etc.
Domestic current is temporarily lowered below 1mAafter
switching offthe load so that contactors,whose holding current
is lower than the constant domestic current of the electronics
(3mA), are reliably switched off.
Contactless electronic
switch
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Connecting to power supply
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RL RL
3
2
1
3
2
1
N- L1+L1+ N-
Max. Min.
PE PE
Fig.8:Wiring plan,contactless electronic switch with valve plug DIN 43650
PE Protective ground
RL Load resistance (contactor,relay,etc.)
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Connecting to power supply
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6Set up
6.1Indication of the switching status
The switching status of the electronics can be checked on the
upper part of the housing.
6.2Function test
SITRANS LVL100 has an integrated test switch which can be
activated magnetically.Proceed as follows to test the instru-
ment:
àHold the test magnet (accessory)to the magnet symbol on
the instrument housing
Fig.9:Function test
The test magnet changes the current switching condition of the
instrument.You can check the change on the signal lamp.
Please note that the connected instruments are activated
during the test.
IfSITRANS LVL100 does not switch over after several tests
with the test magnet,you have to check the plug connection
and the connection cable and test the instrument again.If there
is no switching function,the electronics will be defective.In this
case you have to exchange the electronics or return the
instrument to our repair department.
18 SITRANS LVL100 lCONTACTLESS ELECTRONIC SWITCH
Set up
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Caution:
It is absolutely necessary that you remove the test magnet
after the test from the instrument housing.
6.3Functional chart
The following chart provides an overview of the switching
conditions depending on the adjusted mode and level.
Level Switching status Control lamp
Mode max.Switch closed Green
Mode max.Switch open Red
Mode min.Switch closed Green
Mode min.Switch open Red
Failure any Switch open flashes red
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Set up
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7Maintenance and fault rectification
7.1Maintenance
When used in the correct way,no special maintenance is
required in normal operation.
7.2Remove interferences
The operator of the system is responsible for taken suitable
measures to remove interferences.
Amaximum of reliability is ensured.Nevertheless,faults can
occur during operation.These may be caused by the following,
e.g.:
lSensor
lProcess
lVoltage supply
lSignal 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.
?Control lamps off
lVoltage supply interrupted.
àCheck the voltage supply and the cable connection
àExchange the electronics module
?Signal lamp flashes red
lThere was no load connected when connecting to
power supply
àConnect the instrument correctly
àCheck if the tuning fork is damage or extremely
corroded
?The signal lamp flashes alternately red and green
lShortcircuit or overload
àCheck the electrical connection
Depending on the failure reason and measures taken,the
steps described in chapter "Set up"must be carried out again,
if necessary.
Reaction when malfunc-
tions occur
Causes of malfunction
Fault rectification
Checking the switching
signal
Reaction after fault rec-
tification
20 SITRANS LVL100 lCONTACTLESS ELECTRONIC SWITCH
Maintenance and fault rectification
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