Siemens SITRANS LVL200S User manual

Operating Instructions ·April 2008
SITRANS LVL200S

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
2.7SIL conformity . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.8Safety instructions for Ex areas . . . . . . . . . . . . 6
3Product description
3.1Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2Principle of operation. . . . . . . . . . . . . . . . . . . . 8
3.3Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.4Storage and transport . . . . . . . . . . . . . . . . . . . 9
4Mounting
4.1General instructions. . . . . . . . . . . . . . . . . . . . . 11
4.2Mounting instructions. . . . . . . . . . . . . . . . . . . . 14
5Connecting to power supply
5.1Preparing the connection . . . . . . . . . . . . . . . . . 16
5.2Connection procedure . . . . . . . . . . . . . . . . . . . 16
5.3Wiring plan,single chamber housing. . . . . . . . . 17
6Set up
6.1In general . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.2Adjustment elements . . . . . . . . . . . . . . . . . . . . 19
6.3Functional chart. . . . . . . . . . . . . . . . . . . . . . . . 20
7Maintenance and fault rectification
7.1Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.2Remove interferences . . . . . . . . . . . . . . . . . . . 22
7.3Exchange electronics. . . . . . . . . . . . . . . . . . . . 23
7.4Instrument repair . . . . . . . . . . . . . . . . . . . . . . . 23
8Dismounting
8.1Dismounting steps . . . . . . . . . . . . . . . . . . . . . . 24
2SITRANS LVL200SlRELAY (DPDT)
Content
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8.2Disposal ............................. 24
9Supplement
9.1Technical data. . . . . . . . . . . . . . . . . . . . . . . . . 25
9.2Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Supplementary documentation
Information:
Supplementary documents appropriate to the ordered version
come with the delivery.You can find them listed in chapter
"Product description".
Instructions manuals for accessories and replacement parts
Tip:
To ensure reliable setup and operation of your SITRANS
LVL200S,we offer accessories and replacement parts.The
associated documents are:
l33997 -Electronics module SITRANS LVL200
SITRANS LVL200SlRELAY (DPDT)3
Content
33836-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 LVL200SlRELAY (DPDT)
About this document
33836-EN-080421

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 LVL200Sis 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 LVL200SlRELAY (DPDT)5
For your safety
33836-EN-080421

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 LVL200Sis in CE conformity with EMC (89/336/
EWG), fulfils NAMUR recommendation NE 21 and is in CE
conformity with LVD (73/23/EG).
Conformity has been judged according to the following
standards:
lEMC:
-Emission EN 61326/A1:1998 (class B)
-Susceptibility EN 61326:1997/A1:1998
lLVD:EN 61010-1:1993
2.7SIL conformity
SITRANS LVL200Sfulfills the requirements to functional
safety according to IEC 61508/IEC 61511.You find further
information in the Safety Manual "SITRANS LVL200".
2.8Safety instructions for Ex areas
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 Ex-
approved instruments.
6SITRANS LVL200SlRELAY (DPDT)
For your safety
33836-EN-080421

3Product description
3.1Configuration
The scope of delivery encompasses:
lSITRANS LVL200Spoint level sensor
lDocumentation
-this operating instructions manual
-Safety Manual "Functional safety according to
IEC 61508 or IEC 61511 (SIL)"
-Ex-specific"Safety instructions"(with Ex-versions)
-if necessary,further certificates
SITRANS LVL200Sconsists of the following components:
lHousing cover
lHousing with electronics
lprocess fitting with tuning fork
1
2
3
Fig.1:SITRANS LVL200S
1Housing cover
2Housing with electronics
3Process fitting
The type label contains the most important data for identi-
fication and use of the instrument:
lArticle number
lSerial number
lTechnical data
lArticle numbers,documentation
Scope of delivery
Components
Type label
SITRANS LVL200SlRELAY (DPDT)7
Product description
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3.2Principle of operation
SITRANS LVL200Sis 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 LVL200Scan 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 LVL200Sis
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 LVL200Scontinuously
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
relay deenergises (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 LVL200Sis 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.).
Data for power supply are specified in chapter "Technical
data".
Area of application
Functional principle
Supply voltage
8SITRANS LVL200SlRELAY (DPDT)
Product description
33836-EN-080421

3.3Operation
With the factory setting,products with a density >0.07 g/cm³
(0.025 lbs/in³)can be measured.The instrument can be
adapted if products with lower density should be measured.
On the electronics module you will find the following indicating
and adjustment elements:
lSignal lamp for indication of the switching condition (green/
red)
lDIL switch for sensitivity adjustment
lMode adjustment for selection of the switching condition
(A/B)
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.In addition,the sensor is
provided with a protective cover of ABS.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
Packaging
Transport
Transport inspection
Storage
SITRANS LVL200SlRELAY (DPDT)9
Product description
33836-EN-080421

lStorage and transport temperature see "Supplement -
Technical data -Ambient conditions"
lRelative humidity 20 …85 %
Storage and transport
temperature
10 SITRANS LVL200SlRELAY (DPDT)
Product description
33836-EN-080421

4Mounting
4.1General instructions
In general,SITRANS LVL200Scan 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 markings (notches)that indicate the
switching point with vertical mounting.The switching point
refers to water with the basic setting of the sensitivity switch
≥0.7g/cm³(0.025 lbs/in³). When mounting SITRANS
LVL200S,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 -water 1g/cm³(0.036 lbs/in³). For products
<0.7g/cm³(0.025 lbs/in³)and >0.5g/cm³(0.018 lbs/in³)the
density switch must be set to ≥0.5g/cm³.
Keep in mind that foams with a density >0.45 g/cm³(0.016 lbs/
in³)are detected by the sensor.This can cause faulty
switchings particulary when used as dry run protection system.
2
3
14
Fig.2:Vertical mounting
1Switching point approx.13 mm (0.51 in)
2Switching point with lower density
3Switching point with higher density
4Switching point approx.27 mm (1.06 in)
Switching point
SITRANS LVL200SlRELAY (DPDT)11
Mounting
33836-EN-080421

1
2
Fig.3:Horizontal mounting
1Switching point
1
2
Fig.4:Horizontal installation (recommended installation position,especially for
adhesive products)
1Switching point
2Marking with screwed version on top,with flange versions directed to the
flange holes
With flange versions,the fork is directed as follows to the
flange holes.
Fig.5:Fork position with flange versions
Use the recommended cables (see chapter "Connecting to
power supply")and tighten the cable gland.
Moisture
12 SITRANS LVL200SlRELAY (DPDT)
Mounting
33836-EN-080421

You can give your SITRANS LVL200Sadditional 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.6:Measures against moisture penetration
Do not hold SITRANS LVL200Son the tuning fork.Particularly
with flange or tube versions,the tuning fork can be damaged
just by the weight of the instrument.Transport coated
instruments very carefully and avoid touching the tuning fork.
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 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.
Transport
Pressure/Vacuum
Handling
SITRANS LVL200SlRELAY (DPDT)13
Mounting
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4.2Mounting instructions
SITRANS LVL200Shas a defined thread starting point.This
means that every SITRANS LVL200Sis in the same fork
position after being screwed in.Remove therefore the supplied
seal from the thread of SITRANS LVL200S.This seal is not
required when using a welded socket with O-ring in front.
Keep in mind that this welded socket is not suitable for coated
instrument versions.
Screw SITRANS LVL200Scompletely into the welded socket.
The later position can be determined already before welding.
Mark the appropriate position of the welded socket.Before
welding,unscrew SITRANS LVL200Sand remove the rubber
ring from the welded socket.The welded socket has a marking
(notch). Weld the socket with the notch facing upward,or in
case of pipelines,aligned with the direction of flow.
1
Fig.7: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.On the screwed
version you will find a marking on the hexagon.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.
With flange versions,the fork is directed to the flange holes.
Welded socket
Adhesive products
14 SITRANS LVL200SlRELAY (DPDT)
Mounting
33836-EN-080421

When used in adhesive and viscous products,the tuning fork
should protrude into the vessel to avoid buildup.For that
reason,sockets for flanges and mounting bosses should be
avoided when mounting horizontally.
IfSITRANS LVL200Sis mounted in the filling stream,
unwanted false measurement signals can be generated.For
this reason,mount SITRANS LVL200Sat 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 LVL200Sshould be mounted in such a way that the
surfaces of the blades are parallel to the product movement.
Inflowing medium
Flows
SITRANS LVL200SlRELAY (DPDT)15
Mounting
33836-EN-080421

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
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.
Oscillator with relay output is designed in protection class 1.
To maintain this protection class,it is absolutely necessary that
the ground conductor be connected to the internal ground
terminal.Take note of the general installation regulations.As a
rule,connect SITRANS LVL200Sto vessel ground (PA), or in
case of plastic vessels,to the next ground potential.On the
side of the housing there is a ground terminal between the
cable entries.This connection serves to drain offelectrostatic
charges.InEx applications,the installation regulations for
hazardous areas must be given priority.
Data for power supply are specified in chapter "Technical
data".
SITRANS LVL200Sis connected with standard cable with
round cross section.An outer cable diameter of 5…9mm
(0.2…0.35 in)ensures the seal effect of the cable gland.
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
SITRANS LVL200S.
Take note of the corresponding installation regulations for Ex
applications.
5.2Connection procedure
With Ex instruments,the housing cover may only be opened if
there is no explosive atmosphere present.
Proceed as follows:
Note safety instructions
Take note of
safety instruc-
tions for Ex ap-
plications
Select power supply
Selecting connection
cable
Select connec-
tion cable for Ex
applications
16 SITRANS LVL200SlRELAY (DPDT)
Connecting to power supply
33836-EN-080421

1Unscrew the housing cover
2Loosen compression nut of the cable entry
3Remove approx.10 cm (4in)of the cable mantle,strip
approx.1cm (0.4in)insulation from the ends of the
individual wires
4Insert the cable through the cable gland into the sensor
5Open the terminals with a screwdriver
6Insert the wire ends into the open terminals according to
the wiring plan
7Tighten the terminals with a screwdriver
8Check the hold of the wires in the terminals by lightly
pulling on them
9Tighten the compression nut of the cable entry.The seal
ring must completely encircle the cable
10 Screw the housing cover on
The electrical connection is finished.
5.3Wiring plan,single chamber housing
The following illustrations apply to the non-Ex as well as to the
EEx-d version.
SITRANS LVL200SlRELAY (DPDT)17
Connecting to power supply
33836-EN-080421

3
5
1
2
4
R
2 0 - 2 5 3 V A C
2 0 - 7 2 V D C
A
B
L N
1 2 3 4 5 6 7 8
0,5g/cm3
0,7g/cm3
3 4 5 6 7 8
+
Fig.8:Electronics and connection compartment,single chamber housing
1Control lamp
2DIL switch for mode adjustment
3DIL switch for switching point adaptation
4Ground terminal
5Connection terminals
We recommend connecting SITRANS LVL200Sin such a way
that the switching circuit is open when there is a level signal,
line break or failure (safe condition).
The relays are always shown in non-operative condition.
1
2
3
1 2 3 4 5 6
+
L1
-
N
78
Fig.9:Wiring plan,single chamber housing
1Relay output
2Relay output
3Voltage supply
Electronics and connec-
tion compartment
Wiring plan
18 SITRANS LVL200SlRELAY (DPDT)
Connecting to power supply
33836-EN-080421

6Set up
6.1In general
The numbers in brackets refer to the following illustrations.
In the basic setting,products with a density >0.7g/cm³
(0.025 lbs/in³)can be detected.For products with lower
density,you have to set the switch to >0.5g/cm³(0.018 lbs/
in³).
On the electronics module you will find the following indicating
and adjustment elements:
lControl lamp for indication of the switching condition (1)
lDIL switch for mode adjustment -A/B(2)
lDIL switch for sensitivity adjustment (3)
Note:
For test purposes,immerse the tuning fork of SITRANS
LVL200Salways in liquids.Do not test the function of
SITRANS LVL200Swith the hand.This can damage the
sensor.
6.2Adjustment elements
12345678
1
2
3
Fig.10:Oscillator SWE60R-Relay output
1Signal lamp (LED)
2DIL switch for mode adjustment
3DIL switch for sensitivity adjustment
Function/Configuration
SITRANS LVL200SlRELAY (DPDT)19
Set up
33836-EN-080421

Control lamp for indication of the switching status.
lgreen =relay energized
lred =relay deenergized
lred (flashing)=failure
With the mode adjustment (A/B)you can change the switching
condition of the relay.You can set the required mode
according to the "Function chart"(A-max.detection or
overflow protection,B-min.detection or dry run protection).
With this DIL switch (3)you can set the switching point to
liquids having a density between 0.5and 0.7g/cm³(0.018 and
0.025 lbs/in³). With the basic setting,liquids with a density of
>0.7g/cm³(0.025 lbs/in³)can be detected.In liquids with
lower density,you must set the switch to >0.5g/cm³(0.018 lbs/
in³). The specifications for the position of the switching point
relate to water -density value 1g/cm³(0.036 lbs/in³). In
products with a different density,the switching point will shift in
the direction of the housing or tuning fork end depending on
the density and type of installation.
Keep in mind that foams with a density >0.45 g/cm³(0.016 lbs/
in³)are detected by the sensor.This can cause faulty
switchings particulary when used as dry run protection system.
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 A
Overflow protection
53 4
(8)(6) (7)
Relay energized Green
Mode A
Overflow protection
53 4
(8)(6) (7)
Relay deenergized Red
Mode B
Dry run protection
53 4
(8)(6) (7)
Relay energized Green
Signal lamp (1)
Mode adjustment (2)
Sensitivity adjustment
(3)
20 SITRANS LVL200SlRELAY (DPDT)
Set up
33836-EN-080421