Bürkert LEVEL SWITCH 8110 User manual

Operating Instructions
LEVEL SWITCH 8110
-transistor (PNP)
With extended status indication

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
2.3Warning about incorrect use ................... 4
2.4General safety instructions .................... 4
2.5Safety label on the instrument .................. 5
2.6CE conformity ............................. 5
3Product description
3.1Configuration .............................. 6
3.2Principle of operation ........................ 7
3.3Operation................................. 7
3.4Storage and transport ........................ 8
4Mounting
4.1General instructions ......................... 9
4.2Instructions for installation ..................... 11
5Connecting to power supply
5.1Preparing the connection ..................... 13
5.2Wiring plan................................ 14
6Setup
6.1Indication of the switching status ................ 18
6.2Simulation ................................ 18
6.3Function chart ............................. 19
7Maintenance and fault rectification
7.1Maintenance .............................. 20
7.2Rectify faults .............................. 20
8Dismounting
8.1Dismounting steps .......................... 21
8.2Disposal ................................. 21
9Supplement
9.1Technical data ............................. 22
9.2Dimensions ............................... 26
Editing status:2013-03-18
2LEVEL SWITCH 8110 •With extended status indication
Contents
41764-EN-130410

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 specialist
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:Ifthis 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.
Battery disposal
This symbol indicates special information about the disposal of
batteries and accumulators.
LEVEL SWITCH 8110 •With extended status indication 3
1About 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 protective
equipment must always be worn.
2.2Appropriate use
The LEVEL SWITCH 8110 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 incorrect use
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.
During the entire duration of use,the user is obliged to determine the
compliance of the necessary occupational safety measures with the
current valid rules and regulations and also take note of new
regulations.
4LEVEL SWITCH 8110 •With extended status indication
2For your safety
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2.5Safety label on the instrument
The safety approval markings and safety tips on the device must be
observed.
2.6CE conformity
The device fulfills the legal requirements of the applicable EC
guidelines.By affixing the CE marking,we confirm successful testing
of the product.
You can find the conformity certificate in the download section of our
homepage.
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2For your safety
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3Product description
3.1Configuration
The scope of delivery encompasses:
lLEVEL SWITCH 8110 point level switch
lTest magnet
lDocumentation
-this operating instructions manual
-if necessary,certificates
The LEVEL SWITCH 8110 consists of the components:
lHousing with electronics
lProcess fitting with tuning fork
Fig.1:LEVEL SWITCH 8110
The nameplate contains the most important data for identification and
use of the instrument:
lArticle number
lSerial number
lTechnical data
lArticle numbers,documentation
Scope of delivery
Constituent parts
Type plate
6LEVEL SWITCH 8110 •With extended status indication
3Product description
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3.2Principle of operation
LEVEL SWITCH 8110 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 38 mm length,LEVEL SWITCH 8110 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,LEVEL SWITCH 8110 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.
Function monitoring
The electronics module of LEVEL SWITCH 8110 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 output is open (safe
condition).
The tuning fork is piezoelectrically energised and vibrates at its
mechanical resonance frequency of approx.1100 Hz.When the tuning
fork is submerged in the product,the frequency changes.This change
is detected by the integrated electronics module and converted into a
switching command.
LEVEL SWITCH 8110 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,a pump etc.).
The data for power supply are specified in chapter "Technical data".
3.3Operation
The switching status of LEVEL SWITCH 8110 can be checked with
closed housing (signal lamp). Products with a density >0.7g/cm³
(0.025 lbs/in³)can be detected.
Application area
Functional principle
Voltage supply
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3Product description
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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
based on ISO 4180.
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.
Transport must be carried out under consideration of the notes on the
transport packaging.Nonobservance of these instructions 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 chapter "Supplement -
Technical data -Ambient conditions"
lRelative humidity 20 …85 %
Packaging
Transport
Transport inspection
Storage
Storage and transport
temperature
8LEVEL SWITCH 8110 •With extended status indication
3Product description
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4Mounting
4.1General instructions
Make sure that all parts of the instrument coming in direct contact with
the process,especially the sensor element,process seal and process
fitting,are suitable for the existing process conditions,such as process
pressure,process temperature as well as the chemical properties of
the medium.
You can find the specifications in chapter "Technical data"and on the
nameplate.
In general,LEVEL SWITCH 8110 can be installed in any position.The
instrument only has to be mounted in such a way that the tuning fork is
at the height of the desired switching point.
Keep in mind that the swichting point can vary dependent on the
installation position.
The switching point refers to the medium water (1g/cm³/0.036 lbs/in³).
Please keep in mind that the switching point of the instrument shifts
when the medium has a density differing from water.
2
3
1
11 mm
(0.43")
34 mm
(1.34")
Fig.2:Mounting vertical
1Switching point in water
2Switching point with lower density
3Switching point with higher density
Suitability for the proc-
ess conditions
Switching point
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4Mounting
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2
1
Fig.3:Mounting horizontal
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 LEVEL SWITCH 8110 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 outdoor mounting as well as installation in
areas where high humidity is expected (e.g.through cleaning
processes)or on cooled or heated vessels.
Fig.4:Measures against moisture penetration
Do not hold LEVEL SWITCH 8110 on the tuning fork.
Moisture
Transport
10 LEVEL SWITCH 8110 •With extended status indication
4Mounting
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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.
4.2Instructions for installation
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 LEVEL SWITCH 8110.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.
30 mm
(1.18")
Fig.5:Adhesive products
Pressure/Vacuum
Handling
Adhesive products
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4Mounting
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IfLEVEL SWITCH 8110is mounted in the filling stream,unwanted
false measurement signals can be generated.For this reason,mount
LEVEL SWITCH 8110 at a position in the vessel where no
disturbances,e.g.from filling openings,agitators,etc., can occur.
To make sure the tuning fork of LEVEL SWITCH 8110 generates as
little resistance as possible to product flow,mount the sensor so that
the surfaces are parallel to the product movement.
Inflowing medium
Flows
12 LEVEL SWITCH 8110 •With extended status indication
4Mounting
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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
The instrument is connected with standard two-wire cable without
screen.If electromagnetic interference is expected which is above the
test values of EN 61326 for industrial areas,screened cable should be
used.
Use cable with round cross section.Depending on the plug
connection,you have to select the outer diameter of the cable
respectively so that the seal effect of the cable gland is ensured.
lValve plug ISO 4400,ø4.5…7mm
lValve plug ISO 4400 with IDC crimping technology,ø5.5…8mm
Use cable with a round wire cross section and tighten the cable gland.
When mounting outdoors,on cooled vessels or in moist areas in which
cleaning is made with steam or high pressure,the sealing of the cable
gland is very important.
Note safety instructions
Connection cable
Cable glands
LEVEL SWITCH 8110 •With extended status indication 13
5Connecting to power supply
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5.2Wiring plan
1 2
Fig.6:Overview of the connection versions
1M12 x1plug connection
2Valve plug ISO 4400
3Valve plug ISO 4400 with IDC method of termination
M12 x1plug connection
This plug connection requires a preconfectioned cable with plug.
Protection IP 66/IP 67.
Valve plug ISO 4400
For this plug version,standard cable with round wire cross-section can
be used.Cable diameter 4.5…7mm,protection IP 65.
Housing overview
Plug versions
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5Connecting to power supply
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1
4
5
6
7
8
9
10
2
3
Fig.7:Connection,valve plug ISO 4400
1Pressure screw
2Pressure disc
3Seal ring
4Fixing screw
5Seal washer
6Plug housing
7Plug insert
8Profile seal
9Control lamp
10 LEVEL SWITCH 8110
Valve plug ISO 4400 with IDC method of termination
For this plug version you can use standard cable with round wire
cross-section.The inner conductors do not have to be stripped.The
plug connects the conductors automatically when screwing in.Cable
diameter 5.5…8mm,protection IP 67.
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5Connecting to power supply
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1 2 3 4
5
Fig.8:Connection,valve plug ISO 4400 with IDC crimping technology
1Compression nut
2Cable
3Seal ring
4Terminal insert
5Plug housing
For connection to binary inputs of a PLC.
Max. Min.
3
21
3
21
- +
RL
RL
- +
PA PA
Fig.9:Wiring plan,Transistor output with valve plug ISO 4400
PA Potential equalisation
R
L
Load resistance (contactor,relay,etc.)
Transistor output
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5Connecting to power supply
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RL
RL
1
4
2
3
1
4
2
3
-
Max. Min.
-
++
Fig.10:Wiring plan (housing), transistor output with M12 x1plug connection
1Brown
2White
3Blue
4Black
R
L
Load resistance (contactor,relay,etc.)
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5Connecting to power supply
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6Setup
6.1Indication of the switching status
The switching status of the electronics can be checked via the signal
lamps (LEDs)integrated in the upper part of the housing.
The signal lamps have the following meaning:
lGreen lights -voltage supply connected
lYellow lights -vibrating element covered
lRed lights briefly-function test during instrument start (for 0.5s)
lRed lights -shortcircuit or overload in the load circuit (sensor
output high-impedance)
lRed flashes -Error on the vibrating element or the electronics
(sensor output high impedance)
6.2Simulation
The LEVEL SWITCH 8110 has an integrated function for simulation of
the output signal which can be activated magnetically.Please proceed
as follows:
àHold the test magnet (accessory)against the circle symbol with
the label "TEST"on the instrument housing
Fig.11:Simulation of the output signal
The test magnet changes the current switching condition of the
instrument.You can check the change on the signal lamp.Please note
that all connected device are activated during the simulation.
IfLEVEL SWITCH 8110 does not switch over after several tests with
the test magnet,you have to check the plug connection and the
connection cable and try it 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 LEVEL SWITCH 8110 •With extended status indication
6Setup
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Caution:
It is absolutely necessary that you remove the test magnet from the
instrument housing after the simulation.
6.3Function chart
The following chart provides an overview of the switching conditions
depending on the set mode and the level.
Level Switching sta-
tus
Control lamp
Yellow -cover-
age
Control lamp
Green -voltage
indication
Control lamp
Red -fault sig-
nal
Mode max.closed
Mode max.open
Mode min.closed
Mode min.open
Failure any open any
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6Setup
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7Maintenance and fault rectification
7.1Maintenance
If the instrument is used properly,no special maintenance is required
in normal operation.
7.2Rectify faults
The operator of the system is responsible for taking suitable measures
to rectify faults.
LEVEL SWITCH 8110 offers maximum reliability.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.
Error Cause Rectification
Green signal lamp
off
Voltage supply
interrupted.
Check the voltage supply and the
cable connection
Electronics de-
fective
Exchange the instrument or send it in
for repair
Red signal lamp
lights (switching
output high-impe-
dance)
Error with the
electrical connec-
tion
Connect the instrument according to
the wiring plan
Shortcircuit or
overload
Check the electrical connection
Red signal lamp
flashes (switching
output high-impe-
dance)
Virbating fre-
quency out of
specification
Check the vibrating element on build-
up and remove it
Buildup on the vi-
brating element
Check the vibrating element and the
sensor if there is buildup and remove it
Vibrating element
damaged
Check if the vibrating element is
damage or extremely corroded
Depending on the reason for the fault and the measures taken,the
steps described in chapter "Set up"may have to be carried out again.
Reaction when malfunc-
tions occur
Failure reasons
Fault rectification
Checking the switching
signal
Reaction after fault rec-
tification
20 LEVEL SWITCH 8110 •With extended status indication
7Maintenance and fault rectification
41764-EN-130410