WIKA LSO.25 User Manual [en, de, es, fr]

Operating instructions Betriebsanleitung Mode d'emploi Manual de instrucciones
Messwandler Typ LSO.06 und Schaltverstärker Typ LSO.25
Transducteur de mesure type LSO.06 et relais amplicateur type LSO.25
Transductor modelo LSO.06 y amplicador de conmutación modelo LSO.25
GB
D
F
E
Switching amplier Transducer model LSO.25 model LSO.06
Operating instructions
GB
Models LSO.06, LSO.25 Page 3 - 34 Betriebsanleitung
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Typen LSO.06, LSO.25 Seite 35 - 66 Mode d'emploi
F
Types LSO.06, LSO.25 Page 67 - 98 Manual de instrucciones
E
Modelos LSO.06, LSO.25 Página 99 - 130
© WIKA Alexander Wiegand SE & Co. KG 2010
Prior to starting any work, read the operating instructions! Keep for later use!
Vor Beginn aller Arbeiten Betriebsanleitung lesen! Zum späteren Gebrauch aufbewahren!
Lire le mode d'emploi avant de commencer toute opération ! A conserver pour une utilisation ultérieure !
¡Leer el manual de instrucciones antes de comenzar cualquier trabajo! ¡Guardar el manual para una eventual consulta posterior!
2
WIKA operating instructions models LSO.06, LSO.25
13334603.01 09/2010 GB/D/F/E
Contents
Contents
1. General information 4
2. Safety 5
3. Specications 10
4. Design and function 13
5. Transport, packaging and storage 19
6. Commissioning, operation 20
7. Conguration 26
8. Notes for mounting and operating in hazardous areas 30
9. Maintenance, repair and cleaning 30
GB
10. Faults 32
11. Warranty 33
12. Dismounting, return and disposal 33
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WIKA operating instructions models LSO.06, LSO.25 3
1. General information
1. General information
GB
The instruments described in the operating instructions has been manufactured using state-of-the-art technology. All components are subject to stringent quality and environmental criteria during production. Our management systems are certied to ISO 9001 and ISO 14001.
These operating instructions contain important information on handling the instrument. Working safely requires that all safety instructions and work instructions are observed.
Observe the relevant local accident prevention regulations and general safety regulations for the instrument's range of use.
The operating instructions are part of the instrument and must be kept in the immediate vicinity of the instrument and readily accessible to skilled personnel at any time.
Skilled personnel must have carefully read and understood the operating instructions, prior to beginning any work.
The manufacturer‘s liability is void in the case of any damage caused by using the product contrary to its intended use, non-compliance with these operating instructions, assignment of insuciently qualied skilled personnel or unauthorised modications to the instrument
The general terms and conditions, contained in the sales documentation, shall apply.
Subject to technical modications.
Further information:
- Internet address: www.wika.de / www.wika.com
- Relevant data sheet: LM 31.10, LM 31.20
- Application consultant: Tel.: (+49) 9372/132-0 Fax: (+49) 9372/132-406 E-Mail: info@wika.de
Explanation of symbols
WARNING!
... indicates a potentially dangerous situation, which can result in serious injury or death, if not avoided.
CAUTION!
... indicates a potentially dangerous situation, which can result in light injuries or damage to equipment or the environment, if not avoided.
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1. General information / 2. Safety
Information
... points out useful tips, recommendations and information for ecient and trouble-free operation.
DANGER!
...identies hazards caused by electric power. Should the safety instructions not be observed, there is a risk of serious or fatal injury.
WARNING!
... indicates a potentially dangerous situation in a potentially explosive atmosphere, resulting in serious injury or death, if not avoided.
2. Safety
WARNING!
Before installation, commissioning and operation, ensure that the appropriate instrument has been selected in terms of measuring range, design and specic measuring conditions. Serious injuries and/or damage can occur should these not be observed.
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Further important safety instructions can be found in the individual chapters of these operating instructions.
2.1 Intended use
The model LSO.06 transducer is used for limit value detection in liquids. The model LSO.25 switching amplier may be used in conjunction with the model LSO.06 transducer for overow control. The instruments are very robust and designed for rough operating conditions.
These instruments have been designed and built solely for the intended use described here, and may only be used accordingly.
The technical specications contained in these operating instructions must be observed. Improper handling or operation of the transducer and the switching amplier outside of its technical specications requires the instrument to be shut down immediately and inspect­ed by an authorised WIKA service engineer.
The manufacturer shall not be liable for claims of any type based on operation contrary to the intended use.
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WIKA operating instructions models LSO.06, LSO.25 5
2. Safety
2.2 Personnel qualication
WARNING!
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Skilled personnel
Skilled personnel are understood to be personnel who, based on their technical training, knowledge of measurement and control technology and on their experience and knowledge of country-specic regulations, current standards and directives, are capable of carrying out the work described and independently recognising potential hazards.
Special operating conditions require further appropriate knowledge, e.g. of aggressive media.
2.3 Additional safety instructions for instruments with ATEX approval
Risk of injury should qualication be insucient!
Improper handling can result in considerable injury and damage to equipment.
The activities described in these operating instructions may only be carried out by skilled personnel who have the qualications described below.
Keep unqualied personnel away from hazardous areas.
WARNING!
Non-observance of these instructions and their contents may result in the loss of explosion protection
Observe the European Use Directive (EN 60 079-10:1996 )
2.4 Special hazards
WARNING!
Observe the information given in the applicable type examination certicate and the relevant country-specic regulations for installation and use in potentially explosive atmospheres (e.g. IEC 60079-14, NEC, CEC). Non-observance can result in serious injury and/or damage to equipment.
For additional important safety instructions for insturments with ATEX approval see chapter "2.3 Additional safety instructions for instruments with ATEX approval".
WARNING!
For hazardous media such as oxygen, acetylene, ammable or toxic gases or liquids, and refrigeration plants, compressors, etc., in addition to all standard regulations, the appropriate existing codes or regulations must also be followed.
6 WIKA operating instructions models LSO.06, LSO.25
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2. Safety
WARNING!
To ensure safe working on the instrument, the operating company must ensure
that suitable rst-aid equipment is available and aid is provided whenever required.
that the operating personnel are regularly instructed in all topics regarding work safety, rst aid and environmental protection and knows the operating instructions and, in particular, the safety instructions contained therein.
DANGER!
Danger of death caused by electric current Upon contact with live parts, there is a direct danger of death.
Electrical instruments may only be installed and mounted by skilled electrical personnel.
Operation using a defective power supply unit (e.g. short circuit from the mains voltage to the output voltage) may result in life-threatening voltages on the instrument!
WARNING!
Residual media in dismounted instruments may result in a risk to people, the environment and the system. Take sucient precautionary measures.
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Do not use this instrument in safety or Emergency Stop devices. Incorrect use of the instrument can result in injury.
Should a failure occur, aggressive media with extremely high temperature and under high pressure or vacuum may be present at the instrument.
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WIKA operating instructions models LSO.06, LSO.25 7
2. Safety
2.5 Labelling / safety marks
Product label
GB
Transducer model LSO.06
Model
Switching amplier model LSO.25
For an explanation of symbols see page 9
Date of manufacture
19" plug-in card
In mounted case
For an explanation of symbols see page 9
Date of manufacture
Model
8 WIKA operating instructions models LSO.06, LSO.25
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2. Safety
Explanation of symbols
Before mounting and commissioning the instrument, ensure you read the operating instructions!
CE, Communauté Européenne
Instruments bearing this mark comply with the relevant European directives.
ATEX European Explosion Protection Directive
(Atmosphère = AT, explosible = Ex) Instruments bearing this mark comply with the requirements of the European Directive 94/9/EC (ATEX) on explosion protection.
GB
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WIKA operating instructions models LSO.06, LSO.25 9
3. Specications
3. Specications
3.1 Transducer model LSO.06
GB
General data
Measuring accuracy ±0.5 mm Ambient light max. 100 Lux Mounting position any
Weight
Standard version
High and low temperature version
1) ML = Measuring length
Design data
Medium temperature
Standard version
High and low temperature version
Ambient temperature -65 ... +95 °C Working pressure 0 ... 25 MPa (0 ... 250 bar) High pressure version 0 ... 50 MPa (0 ... 500 bar)
Materials
Sensor case
Light guide
Packing
Case
Ex ignition protection type II 1/2 G Ex ib op is IIC T5, T6
0.77 kg +9.3 g/cm ML
1.07 kg +9.3 g/cm ML
-65 ... +250 °C
-269 ... +400 °C
1.4571 (option: hastelloy, other materials on request) clad core glass (option: quartz, sapphire (only max. ML = 60 mm)) graphite stainless steel
T6: to 60 °C, T5: to 75 °C ZELM 10 ATEX 0440
1)
1)
Electrical data
Cable gland M20 x 1.5, Ex: blue Terminal connection 3 x 2.5 mm² Ingress protection IP 65 per EN 60529
For further specications see WIKA data sheet LM 31.10 and the order documentation.
10 WIKA operating instructions models LSO.06, LSO.25
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3. Specications
P-T Diagram
(Pressure / temperature limitation of application) for mounting connection G ½ A per DIN 910
High temperature version
Standard version
Low temperature version
Medium temperature in °C
Working pressure in bar
Derating Diagram
(Temperature limitation of application)
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High temperature version
Standard version
Medium temperature in °C
Ambient temperature in °C
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Low temperature version
WIKA operating instructions models LSO.06, LSO.25 11
3. Specications
3.2 Switching amplier model LSO.25
General data
GB
Functions
Monitoring
Weight
19" plug-in card
mounted case
Design data
Ambient temperature
19" plug-in card
mounted case
Ex ignition protection type II (2) G [Ex ib] IIC
Maximum external inductance L Maximum external capacitance C
U
0
I
0
P
0
Selectable alarm direction
On-delay and drop-out delay for signal relay, each adjustable up to approx. 8 s
Wire break signal circuit
Short-circuit signal circuit
Internal supply voltage, fail-safe
0.31 (0.36) kg
0.6 (0.73) kg
-25 ... +60 °C
-40 ... +40 °C
ZELM 10 ATEX 0441
max
0.5 mH 3 µF
max
≤ 9.6 V ≤ 149 mA ≤ 1.0 W
Electrical data
Supply voltage AC 230/115/120/24 V / DC 24 V Power consumption 2.8 VA/3 W
Outputs
Cable glands M16 x 1.5 / M20 x 1.5 Ex: blue Max. connection cross section 2.5 mm² Cable length 175 ... 600 m (0.5 ... 1.5 mm²)
Ingress protection
19" plug-in card
mounted case
For further specications see WIKA data sheet LM 31.20 and the order documentation.
12 WIKA operating instructions models LSO.06, LSO.25
Signal relay, SPDT, 250 V/3 A/100 VA
Failure relay, SPDT, 250 V/3 A/100 VA
IP 20 per EN 60529 IP 65 per EN 60529
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4. Design and function
4. Design and function
4.1 Description
The transducer is used for measuring liquid level limits. The conical tip of the sensor ensures really precise on-off performance level sensing. Its reaction is independent of various physical parameters of the liquid such as density, dielectric constant, conductivity, colour or refractive index. This allows the use for safe level switching as well as for precise level control applications. If there is any foam you even can decide whether to use the sensor for foam level or liquid level control, suppress­ing the influence of foam on switching.
If the sensor is supplied with a U-tip, it is able to sense changes in refractive index. So it can be used for example as an interface level switch for liquids.
Principle of operation
Separation layer, U-tip
e.g. oil
e.g. water
Principle of operation
Level, conical tip
Gas Liquid
GB
Application range
High pressure
version with
heatsink
threaded
connection G ½ A
Medium temperature in °C
Standard pressure version
without heatsink
threaded connection
Working pressure in bar
High pressure
version with
heatsink
threaded
connection NPT ½
Medium temperature in °C
Working pressure in bar
All typs of transducers need a switching ampliers model LSO.25 for power supply and switch state signalling.
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WIKA operating instructions models LSO.06, LSO.25 13
4. Design and function
4.2 Instrument design
Each unit consists of a transducer and a controller (switch amplier). The transducer may be of one-piece or multi-part design. Ex types are generally constructed as multi-part
GB
types. Multi-part transducers can be equipped with a heat-sink to expand the temperature range.
4.2.1 Transducer model LSO.06
Without extension Fixed measuring length ML, no extension possible. Protection ngers are part of the sensor housing.
Light guide Ø 7
Sensor housing
*) 20 for high pressure sensor
Sensor body
With extension Measuring length ML from 50 to 960 mm. Extension tube screwed into sensor housing.
Preferential measuring lengths: 50, 60, 80, 90, 100, 120, 150, 200, 300, 600 and 800 mm
Values between these can be delivered using variable-length types
*) 20 for high pressure sensor
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4. Design and function
For increased temperature range Extended temperature range with heatsink. This may be combined with xed ML 25 mm and with extended types.
heatsink
*) 20 for high pressure sensor
Fitted with ange Design with ange from DN25 and from PN6 or ANSI, all forms of the sealing face. Explosion-protected instruments are usually seal-welded to the sensor component (in this case, the hexagon is omitted).
seal weld
alternative seal weld
GB
Insertion length EL = ML-ange thickness
EL from
sealing face
ange
ML from
sealing face
sensor
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WIKA operating instructions models LSO.06, LSO.25 15
4. Design and function
Designs for level and separation layer
GB
4.2.2 Switching amplier model LSO.25
19" plug-in card
Level measurement with conical tip and neck tube/thermowell, measuring length ML 50 ... 960 mm
Level measurement with conical tip, xed measuring length ML 25 mm, without neck tube
Separation layer measurement with U-tip, neck tube/thermowell, measuring length ML 50 ... 960 mm
Separation layer measurement with U-tip, xed measuring length ML 25 mm, without neck tube
time delay on time delay o
Trans-
time delay
Fuse
16 WIKA operating instructions models LSO.06, LSO.25
ducer
Failure
Signal
Supply
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4. Design and function
For explosion protected version please note the following
The amplier is designed as a plug-in card for a 19" plug-in card. The plug-in card alone doesn't fulll the ingress protection IP 20 in accordance with EN 60529: 1991. It only is intended for the installation into a suitable rack which guarantees the minimum ingress protection IP 20. Not used plug-in places have if necessary to be covered with blind plates. The distances and tracking distances particularly are between the individual plug-in cards as well as the intrinsic safe and not intrinsic safe circuits, the requirements on the wiring as well as the excess temperature and the dissipation power converted in the assemblies are to take into account according to ers are provided with an encoding system. It has to be made sure that the counter-strip is executed availably and identically in the 19" rack.
Default coding
Supply voltage version
AC 230 V B-C-D-E-F-G-H-J 1 AC 115/120 V A, C-D-E-F-G-H-J 2 AC 24 V A-B, D-E-F-G-H-J 3 DC 24 V A-B-C, E-F-G-H-J 4
Encoder-strip rack,
provided at these positions with coding pins
EN 60079-11:2007
. To avoid mistakes, the switch ampli-
Encoder-strip plug-in card,
provided at these positions with one coding pin
:
Encoder-strip plug-in card
GB
Encoder-strip rack
Example: AC 230 V supply voltage version
We exclusively recommend the use of suitable racks for the guarantee of the requirements to WIKA.
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WIKA operating instructions models LSO.06, LSO.25 17
4. Design and function
Alternatively the coding can take place directly in the female connector (rack side) and the associated male connector (switching amplier side) after the following coding plan:
GB
The coding pin is inserted with a tool captive in the appropriate place in the female connector and at the opposite side in the male connector is a drilling.
In mounted case
time delay on time delay o
trans-
ducer
M20 x 1.5 or
time delay
Failure
Signal
Fuse
Supply
75 high
M16 x 1.5
4.3 Scope of delivery
Cross-check scope of delivery with delivery note.
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5. Transport, packaging and storage
5. Transport, packaging and storage
5.1 Transport
Check instrument for any damage that may have been caused by transport. Obvious damage must be reported immediately.
5.2 Packaging
Do not remove packaging until just before mounting. Keep the packaging as it will provide optimum protection during transport (e.g. change in installation site, sending for repair).
5.3 Storage Permissible conditions at the place of storage:
Storage temperature: -25 ... +70 °C
Humidity: 35 ... 85 % relative humidity (no condensation)
Avoidance of exposure to the following factors:
Direct sunlight or proximity to hot objects
Mechanical vibration, mechanical shock (putting it down hard)
Soot, vapour, dust and corrosive gases
Potentially explosive environments, ammable atmospheres
Store the instrument in its original packaging in a location that fullls the conditions listed above. If the original packaging is not available, package and store the instrument as described below:
1. Wrap the instrument in an antistatic plastic lm.
2. Place the instrument, along with shock-absorbent material, in the packaging.
3. If stored for a prolonged period of time (more than 30 days), place a bag, containing a desiccant, inside the packaging.
GB
WARNING!
Before storing the instrument (following operation), remove any residual media. This is of particular importance if the medium is hazardous to health, e.g. caustic, toxic, carcinogenic, radioactive, etc.
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WIKA operating instructions models LSO.06, LSO.25 19
6. Commissioning, operation
6. Commissioning, operation
Before the installation a check of the function can be carried out. The device attached
GB
provisionally and the glass tip are one and from dived to this for the test in a glass with liquid (adjustment if necessary, see chapter "7.2 Adjustment with CAL").
WARNING!
The electrical connection only be carried out by qualied skilled personnel. Observe the appropriate VDE regulations.
6.1 Installation instructions transducer model LSO.06
The sensors may be installed in any direction, i. e. from top, bottom, sideways or inclined.
In some special applications it is recommended to use following hints:
High viscosity: sideways or from bottom
Dry Running protection for pumps:
Overll prevention devices: usually vertically from above
Vertical installation
if the pipes to or from the pump are installed horizontally use top mounting for fast detection of liquid
Installation model LSO.06 from top with ange connection e. g. as overow control.
Insertion length EL from sealing face ange
DIN anges from DN25 PN6
ANSI anges
The sealing forms are freely selectable
Explosion-protected version:
Flanges seal-welded with the transducer
sensor component
If seal-welded: no hexagon on sensor
component
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6. Commissioning, operation
Lateral installation
Sieb
6.2 Mechanical installation
6.2.1 Transducer model LSO.06
CAUTION!
Carried out work only after a complete pressure balance. Take corresponding safety and environmental protective measures.
Model LSO.06 built-in to pipe or tank wall laterally, here, for example, as dry-run protection into the suction or pressure line of a pump, slightly oset from the centre and provided with a screen so that it is unaect­ed by gas bubbles.
In the model LSO.06 used here, the measurement length ML is xed at 25 mm.
GB
The glass tip should have a distance of at least 10 mm to an opposite wall after assembly having been carried out. This minimum distance can vary depending on geometry and surface composition of the wall (e.g. with electropolished pipes 20 ... 30 mm).
Screw directly into the corresponding threaded coupling using a metallic seal or, with the anged version, connect with a ange (observe DIN/ANSI).
CAUTION!
Assemble the transducer with caution and care, particularly respected on the break risk of the glass. Take measures for the protection of the trans­ducer head if a lateral load has to be expected. The operating company has to provide the suitable choice of the seal diameters and materials. The torque corresponds in the pipe line engineering for usual values. Install the transducer unstressedly.
The transducer may not be charged at the side under any fuss when installing and in the built-in condition at the sensor head (see chapter "9.2 Repair"). When screwing into a connection thread do not use the sensor head for turning.
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WIKA operating instructions models LSO.06, LSO.25 21
6. Commissioning, operation
Pressure and leage test
Every device is subjected to a pressure examination in the work. If in the plant still a strength examination (system pressure examination) be required, pressure may not
GB
exceed the examining pressure means 1.5 times the indicated pressure on the type plate and the ange.
CAUTION!
For all examinations and uses, in principle, these are indicated on the type plate authoritatively!
6.2.2 Switching amplier model LSO.25 (in makrolon housing)
Prepare mounting holes (see gure below)
Detach the clear cover from the housing
Insert mounting screws from cover side into the mounting holes
Tighten the mounting screws
mounting
holes
6.3 Electrical connection
WARNING!
For the electrical connection, comply with all relevant regulations.
The transducer and switching amplier connections are both marked with the colors WS (white) respective 2d, BR (brown) respective 4d and GN (green) respective 6d. Connect them according to the connection plan.
22 WIKA operating instructions models LSO.06, LSO.25
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6. Commissioning, operation
The cable must not be shielded, however, should not be laid directly besides strong electrical interference sources either. Including line resistance, contact resistance goes the maximum line length and with that by the following table the maximum:
Wire cross section
in mm²
0.5 175 6.3
0.75 300 7.2
1.0 400 7.2
1.5 600 7.2
A complete resistance of 9 Ω, inclusive of contact resistances, should not be exceeded since otherwise a failure signal is carried out.
In addition, for the explosion-protected version, a max. inductance of L
≤ 0.5 mH and a max. capacitance of Ca ≤ 3 µF must be observed (incl.
a
switching amplier values).
Connection diagram transducer and switching amplier
Ex zone 0/1 Safe area
Wiring length
in m
Wiring resistance
in Ω
GB
Switching amplier model LSO.25
Transducer
model LSO.06
Signal Failure
The instrument can
be connected to
earth.
For the explosion-protected version, a light-blue cable or one marked light-blue must be installed from the switching amplier to the transducer (intrinsically safe circuit). The switching amplier is located in the non-hazardous area and the measuring body of the transducer in a Zone 1 area.
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WIKA operating instructions models LSO.06, LSO.25 23
6. Commissioning, operation
6.3.1 Transducer model LSO.06
GB
Earthing
Earth can be connected at the internal earthing screw (is not necessary for intrinsic safety) or the connection is carried out via the metallic contact of the screwing thread with the container.
6.3.2 Switching amplier model LSO.25 19" plug-in card
male plug per DIN 41612
Male plug-connection side
row
Mounted case
screw terminals
Transd.Failure
Transd.
FailureSignal
Signal
Supply
Supply
24 WIKA operating instructions models LSO.06, LSO.25
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6. Commissioning, operation
6.4 Connection supply
First check, if the existing supply voltage agrees with the voltage version of the switching amplier should be checked rst (see marking on the circuit board).
230 V ~ LSO.25-X1X 115/120 V ~ LSO.25-X2X 24 V ~ LSO.25-X3X 24 V = LSO.25-X4X
24 V = without potential separation LSO.25-X7X (only for standard)
At the plastic case version the line terminals "supply" is marked with the operating voltage in addition and it is the connection to see directly from the imprint. Carry out the connection in accordance with "Connection diagram transducer and switching amplier" on page 22.
Pin assignment of plug-in card
d 28 (c28) = N (-) d 30 (c30) = L (+)
6.5 Connection relay
The signals "signal" and "failure" are provided for per a relay with change over contacts. These are potential-free and can be used for every arbitrary application. At the mounting case version the connections can be seen directly from the imprint on the pcboard.
GB
Pin assignment of plug-in card
Failure Signal Contact
4/d18 1/d24 NO 5/d16 2/d22 NC 6/d14 3/d20 root
6.6 Function control
After wiring been carried out and checked the supply can be switched on. One of the yellow LED's should come on now. By pressing the button "test" at closed switch S2 (time delay turned o) one of the two yellow LED shines approx. 1 s. After this the other yellow LED is ashing as long as the test button remains pressed. This shows that wiring and switch ampliers are all right. If this should not be the case, follow the justage instructions see chapter "7.2 Adjustment with CAL".
Please observe the actions to be taken in the event of any faults that may occur, see chapter "10. Troubleshooting".
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WIKA operating instructions models LSO.06, LSO.25 25
7. Conguration
7. Conguration
7.1 Setting of fail-safe direction with switch S1
GB
Switch S1 is a wire-hook switch which may be shortened by soldering or permanent opened by cutting the switch wire.
High alarm: - S1 open,
- Signal relay released if sensor tip is immersed Low alarm: - S1 closed
- Signal relay released if sensor tip is dry Factory setting: - S1 open
Fault eect to dry/immersed
Operating status S1 Yellow LED
immersed
Immersed
sensor tip in medium with higher refractive index
open H High alarm
closed
ashing o released
permanent on o energized L Low alarm
Dry
sensor tip in medium with lower refractive index
open H High alarm
closed
o permanent on energized
o ashing released L Low alarm
Yellow LED dry
Signal relay
time delay on time delay o
Trans-
ducer
M20 x 1.5 or
time delay
Failure
Signal
Fuse
Supply
75 high
M16 x 1.5
26 WIKA operating instructions models LSO.06, LSO.25
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7. Conguration
7.2 Adjustment with CAL
This is only required at the rst putting into operation or after the wiring to compensate for all variable inuences of the measuring equipment.
Calibrate only when the sensor tip is in the medium with higher refractive index, e. g.:
Level liquid/gas = in the liquid
Separation layer e. g. water/oil = in oil
The photo transistor voltage can be measured between "GN" and "WS" of the transducer connection with a voltage instrument (Ri ≥ 10 MOhm Messbereich 10 V=).
Voltage between GN / WS in V
1)
dry
Level (conical tip) 0.2 - 1.0
1) do not adjust, only check this value
2) 0.2 V at short measuring lengths and clean conical tip, up to 1.0 V at larger measuring lengths and dirty conical tip.
3) adjust this value in the immersed condition only, the switching quality of the system transducer/ switching amplier can be inuenced by variation of this value:
approx. 4.5 V = less drop sensitive, foam insensitive
approx. 5.0 V = normal low viscous, clean application, no inuence of temperature uctuations of the medium up to ±25 °C
approx. 5.5 V = at strong temperature uctuations of the medium up to ±40 °C
approx. 6.0 V = detektion of condensation, foam (must have stable, reproducible qualitiy)
2)
immersed
3)
4.5 - 6
GB
Voltage between GN / WS in V
dry
(lower refractive index)
Separation layer (U-tip)
4) do not adjust, only check this value
5) the tension takes o two media and at this measuring of the refractive index dierence can there­fore vary strongly.
6) adjust this value only when the sensor tip is immersed from the medium with higher refractive index.The switching quality of the system sensor/amplier can be inuenced by variation of this value.
To get a stable measuring it should be tried to adjust a dierence as big as possible between these two values
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0.2 - 3.0
5)
4)
immersed
(higher refractive index)
6)
4.5 - 6
WIKA operating instructions models LSO.06, LSO.25 27
7. Conguration
7.3 Justage of time delay
The switch S2 is a wire-hook switch and is to or switch o the delay of the signal relay which separated is adjustable for relay energize and release, e.g. at restless surface or
GB
strong fumigations or formations of bubbles in the liquid.
No time delay: Close S2 or shorten by soldering With time delay: Time to energize relay ( _↑ ) with P1 as required (0 ... 8 s) adjust
Release time ( ↓_ ) with P1 as required (0 ... 8 s) adjust Factory settings: S2 open, P1 and P2 middle position (ca. 3 ... 4 s)
7.4 TEST Procedure
Test expiry when pressing the test button:
Test button pressed Test button released
S1 open
S2 openS2 closedS2 openS2 closed Sensor tip Transducer immersed
S1 closed
S1 open
S1 closed
S1 open
Sensor tip Transducer dry
S1 closed
S1 open
S1 closed
LED o LED ashes LED permanent on
Legend: BEN = immersed TRO = dry tD = delay time to adjust with P1 and P2
28 WIKA operating instructions models LSO.06, LSO.25
13334603.01 09/2010 GB/D/F/E
7. Conguration
Conditions:
P1 and P2 middle position, ca. 3 - 4 s time delay if P2 is open
Transducer correct connected and in function
No failure present
The time delay is, with S2 open, = switched on, must suciently be pushed for a long time the button so that the complete test can go o. No test can go o, the alarm was already entitled taken there is with S1 open, S2 open and sensor tip immersed. The same applies S1 closed, S2 open and sensor tip dry. Failure, LED red and a yellow one ashes, can go o no test at.
The test function makes possible a checking the measuring chain switching amplier separately and e.g. post-connected signal amplier, signaling devices, control devices or a correction device at a connected and operating transducer and a reliable information gives about the proper function of the circuit board.
7.5 Operating characteristics relay SIGNAL
see table "Fault effect to dry/immersed", page 25
7.6 Operating characteristics relay FAILURE
The relay failure is energized in the normal operation and releases under the following conditions (fail safe behavior):
The supply voltage breakes down (>100 ms)
The internal supply voltage for the intrinsic safe circuit breakes down
Short circuit (BR-WS) or interruption to infrared-LED (BR)
Short circuit (GN-WS) or interruption to phototransistor (GN)
Behavior
of the LED's see table
"Fault eect to dry/immersed", page 25
GB
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WIKA operating instructions models LSO.06, LSO.25 29
8. Notes for mounting and operating ... / Maintenance, ...
8. Notes for mounting and operating in hazardous areas
Zone 0 for Transducer model LSO.06
GB
If medium touched parts consist of titanium, the operator has to take care that no metallic ttings can beat to the sensor parts and therefore could trigger a blow spark in the contain­er. Perhaps a protection cage has to be attached outside the container around the sensor head.
Ambient temperatures
If the transducer is installed vertically, the operating company has to provide it, the max. temperatures indicated in the technical data do not exceed at all over, for Ex version T6: +60 °C and T5: +75 °C.
CAUTION!
When a fault occurs, the repair should be by the manufacturer or by the system operator and approved by a factory expert.
9. Maintenance, repair and cleaning
9.1 Maintenance
As a rule, these instruments are maintenance-free. Stronger pollution is in the plant, however, recommends himself to make a maintenance instruction. Perhaps this can conne himself to an electrical measuring of the voltage between GN and WS of the transducer:
Immersed (BEN) in the rule 5 V *)
Dry (TRO) in the rule 0,2 ... 1 V *)
*) see table page 26 (separation layer) and table page 30
Repairs must only be carried out by the manufacturer. At broken glass send in the transducer for repair see chapter "12.2 Return".
9.2 Repair
For repairs, only spare parts recommended by us are to be used. Repairs must be agreed upon with us in writing, otherwise our warranty and responsibility will become void.
Transducer
It is not expected that the plant operator will carry out any repairs himself. If the system operator wants to carry out a repair, at his own, he must obtain permission from the manufacturer.
30 WIKA operating instructions models LSO.06, LSO.25
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