SICK AG
Erwin-Sick-Str. 1
79183 Waldkirch, Germany
Germany
Legal notices
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Reproduction of this document or parts of this document is only permissible within
the limits of the legal determination of Copyright Law.
Any modication, expurgation, or translation of this document is prohibited without
the express written permission of SICK AG.
The trademarks stated in this document are the property of their respective owner.
These operating instructions provide important notes on how to use sensors from SICK AG.
Prerequisites for safe work are:
•Compliance with all safety notes and handling instructions supplied.
•Compliance with local work safety regulations and general safety regulations for
sensor applications.
The operating instructions are intended to be used by qualied personnel and electrical
specialists.
Note:
Read these operating instructions carefully before starting any work on the device,
in order to familiarize yourself with the device and its functions.
The instructions constitute an integral part of the product and are to be stored in the
immediate vicinity of the device so they remain accessible to sta at all times. Should
the device be passed on to a third party, these operating instructions should be handed
over with it.
These operating instructions do not provide information on operating the machine
in which the sensor is integrated. For information about this, refer to the operating
instructions of the particular machine.
1.2 Scope
These operating instructions serve to incorporate a sensor into a customer system.
Instructions are given by stages for all actions required.
These instructions apply to all available device variants of the sensor. For more detailed
information for the identication of the available device types, see “3.1.2 Type code”.
Available device variants are listed on the online product page:
bwww.sick.com
Various device variants are used as examples for commissioning, based on the default
parameter settings for the relevant device.
Simplied device name in the document: In the following, the sensor is referred to in
simplied form as LFP. Exceptions occur where a distinction between device variants is
required due to dierent technical features or functions. In this case, the complete type
designation (e.g. LFP Cubic) is used.
1.3 Explanation of symbols
Warnings and important information in this document are labeled with symbols.
The warnings are introduced by signal words that indicate the extent of the danger.
These warnings must be observed at all times and care must be taken to avoid
accidents, personal injury, and material damage.
DANGER
… indicates a situation of imminent danger, which will lead to a fatality or serious
injuries if not prevented.
The LFP is designed for both continuous level measurement and point level measurement
in nearly all liquids (a list of the possible media can be found in the appendix).
The sensor is not aected by changes in the properties of the liquids to be measured.
The LFP can be used in metal containers or bypass/immersion pipes. A coaxial tube is
required for use in plastic containers.
2.2 Incorrect use
Any use outside of the stated areas, in particular use outside of the technical
specications and the requirements for intended use, will be deemed incorrect use.
If the operator wishes to use the sensor in other conditions or in dierent environ-
ments, then the manufacturing service may issue an operating license in consultation
with the customer and in exceptional cases.
2.3 Limitation of liability
Applicable standards and regulations, the latest state of technological development,
and our many years of knowledge and experience have all been taken into account
when assembling the data and information contained in these operating instructions.
The manufacturer accepts no liability for damage caused by:
•Failing to observe the operating instructions
•Incorrect use
•Use by untrained personnel
•Unauthorized conversions
•Technical modications
•Use of unauthorized spare parts, consumables, and accessories
With special variants, where optional extras have been ordered, or owing to the latest
technical changes, the actual scope of delivery may vary from the features and illustrations shown here.
2.4 Modications and conversions
IMPORTANT
Modications and conversions to the sensor and/or the installation may result in
unforeseeable dangers.
Interrupting or modifying the sensor or SICK software will invalidate any warranty claims
against SICK AG. This applies in particular to opening the housing, even as part of
mounting and electrical installation.
Before technical modications to and expansions of the sensor, the prior written
2.5 Requirements for skilled persons and operating personnel
WARNING
Risk of injury due to insucient training.
Improper handling of the sensor may result in considerable personal injury and material
damage.
• All work must only ever be carried out by the stipulated persons.
The operating instructions state the following qualication requirements for the various
areas of work:
•Instructed personnel have been briefed by the operator about the tasks assigned
to them and about potential dangers arising from improper action.
•Skilled personnel have the specialist training, skills, and experience, as well as
knowledge of the relevant regulations, to be able to perform tasks delegated to
them and to detect and avoid any potential dangers independently.
•Electricians have the specialist training, skills, and experience, as well as
knowledge of the relevant standards and provisions to be able to carry out work on
electrical systems and to detect and avoid any potential dangers independently.
In Germany, electrical specialists must meet the specications of the BGV A3 Work
Safety Regulations (e.g., Master Electrician). Other relevant regulations applicable
in other countries must be observed.
2SAFETY INFORMATION
The following qualications are required for various activities:
ActivitiesQualication
Mounting, maintenance
Electrical installation,
device replacement
Commissioning,
conguration
Operation of the device for
the particular application
• Basic practical technical training
• Knowledge of the current safety regulations in the workplace
• Practical electrical training
• Knowledge of current electrical safety regulations
• Knowledge of device control and operation in the particular
application concerned (e.g.conveying line)
• Basic knowledge of the control system in use
• Basic knowledge of the design and setup of the described
connections and interfaces
• Basic knowledge of data transmission
• Knowledge of device control and operation in the particular
area of application concerned (e.g. bottling plant)
• Knowledge of the software and hardware environment for the
particular application concerned (e.g. bottling plant)
2.6 Operational safety and particular hazards
Please observe the safety notes and the warnings listed here and in other chapters
of these operating instructions to reduce the possibility of risks to health and avoid
dangerous situations.
•Read the operating instructions prior to commissioning.
•These operating instructions are valid for devices with a rmware version higher
than V4.00.
•The LFP is not a safety component under the EU Machinery Directive.
•Observe national safety and work safety regulations.
•Wiring work and the opening and closing of electrical connections may only be
carried out when the power is switched o.
•The radiated power is far lower than that from telecommunication equipment.
According to current scientic research, the operation of this device can be
classied as safe and nonhazardous.
2.8 Repairs
Repair work on the sensor may be performed only by qualied and authorized
personnel from SICK AG. Interruptions or modications to the sensor on the part
of the customer will invalidate any warranty claims against SICK AG.
The sensor is operated using the display and operating buttons.
For a detailed description of the pushbuttons and their functions, see “8.1 Display and
pushbuttons”.
3.3 Product features and functions
3.3.1 Principle of operation
The LFP uses TDR (Time Domain Reectometry) technology.
This is a process to determine transit times of electromagnetic waves. The sensor
electronics generate a low-energy electromagnetic pulse, which is linked to and runs
along the probe.
If this pulse strikes the surface of the liquid to be measured, a portion of the pulse
is reected there and is conducted back up along the probe path to the electronics,
which then calculate the level based on the time dierence between the sent and the
received pulse.
The sensor can output this level as a continuous measured value (analog output) and
can also derive two and/or four freely positionable switching points from it (switching
outputs).
IO-Link communication is also available for the switching output (Q1),
see “8.1.3 IO-Link”.
The innovative TDR technology enables reliable level measurement which is largely
application-independent. The LFP is suitable for both continuous level measurement
and point level measurement in nearly all liquids.
The sensor is not aected by changes in the properties of the liquids to be measured.
The LFP can be used in metal containers or bypass/immersion pipes. A coaxial tube is
For your own safety, please read and observe the following notes:
IMPORTANT
Damage to the sensor due to improper transport.
• The device must be packaged for transport with protection against shock and damp.
• Recommendation: Use the original packaging as it provides the best protection.
• Transport should be performed by specialist sta only.
• The utmost care and attention is required at all times during unloading and
transportation on company premises.
• Note the symbols on the packaging.
• Do not remove packaging until immediately before you start mounting.
4.2 Transport inspection
Immediately upon receipt at the receiving work station, check the delivery for
completeness and for any damage that may have occurred in transit. In the case of
transit damage that is visible externally, proceed as follows:
4.3 Storage
•Do not accept the delivery or only do so conditionally.
•Note the scope of damage on the transport documents or on the transport
company's delivery note.
•File a complaint.
Note:
Complaints regarding defects should be led as soon as these are detected. Damage
claims are only valid before the applicable complaint deadlines.
Store the device under the following conditions:
•Recommendation: Use the original packaging.
•Do not store outdoors.
•Store in a dry area that is protected from dust.
•To ensure that any residual moisture present can escape, do not store
in airtight containers.
•Do not expose to any aggressive substances.
•Protect from sunlight.
•Avoid mechanical shocks.
14
•Storage temperature: see “12 Repair work”.
•Relative humidity: see “12 Repair work”.
•For storage periods of longer than 3 months, check the general condition
of all components and packaging on a regular basis.
The LFP is mounted vertically from above into the container or bypass, using its process
connection. The LFP level sensor has a G ¾ or ¾" NPT threaded connection. A minimum
connecting piece diameter in accordance with the diagrams below must be observed.
The LFP must be installed so that after mounting there is sucient distance to other tank
components (e.g. supply tubes, other measurement devices), the container wall or the
container bottom. These minimum distances are also specied in the diagrams.
The LFP can also be used in a metal immersion pipe or bypass. The installation
conditions are shown in the Figure on page 15.
Ensure that there is a good metallic connection between the LFP measuring device and
the tank/bypass. When operating the sensor, ensure that the ambient temperature is not
above or below the limits.
Insulating the sensor housing is not permitted for tanks with hot media.
When positioning the device, ensure that the sensor is not directly exposed to the lling ow.
The sensor housing can be rotated 360°, allowing for the cable outlet to be positioned
freely.
5MOUNTING
5.1.1 Installation in a container
Note:
The distances are identical for the sensor with remote amplier.
C A
Fig. 2: LFP Cubic
1 Mono-probe with metallic containers
Installation in the nozzle
D ≥ DN 25
Distance to container wall/container
bottom:
A ≥ 50 mm
B ≥ 10 mm
Distance to components built into the
container
≥ 100 mm
D
B
2 Coaxial tube in metallic and non-metallic
containers
C = In the case of a coaxial probe there
are no minimum distances from the container wall and built-in components to be
observed.
5.1.2 Installation in a metal immersion tube or metal bypass
D
B
Fig. 3: LFP Cubic
1 Centering
2 D ≥ DN 40
Distance to bypass/container bottom
B ≥ 10 mm
Centering: To prevent contact between the probe and the bypass pipe during
oscillations, the probe should be centered according to its length and depending on the
diameter of the bypass pipe. To do this, it is necessary to insert one or two centering
pieces, see “17 Accessories”.
See the operating instructions for the coaxial tube (8015674) at www.sick.com.
5.3 Shortening or replacing the probe rod/rope probe
If the probe rod or rope probe is too long for the application, it can be shortened to the
container height. In this case, you should not shorten the probe beyond its minimum
length of 100 mm. If the LFP is to be used in a hygienic application, then be sure that
the roughness of Ra≤0.8 µm is reestablished on the shortened machined surfaces of
the mono-probe.
5.3.1 Procedure
Shorten the probe rod and/or rope probe as desired. Adjust the new probe length in the
LFP, see “8.4.7 Conguring the probe length”. Ensure that this correction corresponds
to the probe length, because an incorrect value in the Length menu has a direct eect
on measurement accuracy and can lead to faults. The probe length L is set out in
Chapter “15 Dimensional drawings”.
The probe rod and/or the rope probe can be swapped. Use a suitable tool. If the system
experiences strong vibrations, secure the probe with thread-locking lacquer.
An incorrect supply voltage may result in damage to the equipment.
• Only operate the device using a protected low voltage and safe electrical insulation
as per protection class III.
IMPORTANT
Equipment damage or unpredictable operation due to working with live parts.
Working with live parts may result in unpredictable operation.
• Only carry out wiring work when the power is o.
• Only connect and disconnect electrical connections when the power is o.
6ELECTRICAL INSTALLATION
•The electrical installation must only be performed by electrically qualied personnel.
•Standard safety requirements must be met when working in electrical systems.
•Only switch on the supply voltage for the device when the connection tasks have
been completed and the wiring has been thoroughly checked.
•When using extension cables with open ends, ensure that bare wire ends do not
come into contact with each other (risk of short-circuit when supply voltage is
switched on!). Wires must be appropriately insulated from each other.
•Wire cross-sections in the supply cable from the customer's power system must be
designed in accordance with the applicable standards. In Germany, observe the
following standards: DIN VDE 0100 (Part 430) and DIN VDE 0298 (Part 4) and/or
DIN VDE 0891 (Part 1).
•Circuits connected to the device must be designed as SELV circuits
(SELV = Safety Extra Low Voltage).
•Protect the device with a separate fuse at the start of the supply circuit.
Instructions for laying data cables:
• Use screened data cables with twisted-pair wires.
• Implement the screening design correctly and completely.
• To avoid interference, e.g. from switching power supplies, motors, clocked drives,
and contactors, always use cables and layouts that are suitable for EMC.
• Do not lay cables over long distances in parallel with voltage supply cables and
motor cables in cable channels.
Subject to change without notice
The IP67 protection class for the device is only achieved under the following conditions:
•The cable connected at the M12 connection is screwed on.
If this is not done, the device does not fulll any specied IP enclosure rating!
The sensor is connected using a pre-assembled female cable connector with
M12 x 1 plug connector (5/8-pin). With the power switched o, plug the female
cable connector into the sensor and screw it tight.
Connect the cable according to its function. After the supply voltage is set up, the
sensor performs a self-test. Once installed, the sensor is ready for operation upon
completion of the self-test (< 5 s). The display shows the current measured value.
All lengths specied in the menu refer to the end of the probe and/or, for a congured
oset (for LFP Cubic see “8.4.7 Conguring the probe length”), to the tank bottom.
You can access the menu by pressing the Set pushbutton for at least three seconds.
8.1.1 Variants with two switching outputs
Q1 Q2
1000 mm
Arrow pushbuttons: Navigating in the menu and changing values
Set pushbutton: Saving and conrming
Esc pushbutton: Exiting the operating menu step-by-step
Note:
A bar graph above the unit symbol indicates the statuses of the switching outputs
when using millimeters as the unit. This display is not available when inches are
selected as the unit.
8.1.2 Variants with four switching outputs
Q1/2/3/4
1000 mm
Arrow pushbuttons: Navigating in the menu and changing values
Set pushbutton: Saving and conrming
Esc pushbutton: Exiting the operating menu step-by-step
For operation over IO-Link, an IODD le and a description of the available telegram
parameters are available for download at www.sick.com.
Subject to change without notice
8.2 Conguring the switching outputs
8.2.1 Switching hysteresis and window function
Depending on 2 or 4 output variants
Level
SP
RP
high
low
high
low
HNO
HNC
8OPERATION
If the level is uctuating around the
target value (e.g. ripple movement
during lling), the hysteresis keeps the
t
switching status of the outputs stable.
When the level is increasing, the
output switches when the respective
switching point (SP) is reached; if the
level sinks again, the output switches
back only after the reset switching
point (RP) has been reached.
Depending on 2 or 4 output variants
Level
The window function enables moni-
toring of a dened range. If the level
is between window high (FH) and
FH
FL
window low (FL), the output will be
active (normally open) and/or inactive
(normally closed).
t
The error status of the measuring
device reects the cable break
high
low
FNC
monitoring. During an error status,
the measuring device switches to
a safe state; i.e. the switching outputs
become inactive.
high
low
FNO
As far as the downstream signal
evaluation is concerned, this
corresponds to a cable break.
The LFP can automatically detect which signal is required based on the connected
output load.
The following rules apply:
•4 mA ... 20 mA < 500 ohms at Uv > 15 V
•4 mA ... 20 mA < 350 ohms at Uv > 12 V
•0 V ... +10 V > 750 ohms at Uv ≥ 14 V
Conguration
1. Access the QAMENU-TYP menu using the arrow and Set pushbuttons.
2. Set the QAMENU-TYP menu to Auto?.
Note:
Automated signal detection is only active when the device is switched on for the rst time.
After this the function can be activated again in the QAMENU-TYP menu with Auto?.
8OPERATION
8.3.2 Current output 4 mA ... 20 mA
Conguration
1. Set the upper limit value (20 mA).
•Set the value in the QAMENU-QAHIGH menu to the level in mm
(e.g. 500 mm).
2. Set the lower limit value (4 mA).
•Set the value in the QAMENU-QALOW menu to the level in mm
(e.g. 10 mm).
3. Invert the signal.
The analog signal can be inverted in the QAPOL menu.
Set the parameter in the QxMENU-QAPOL menu to QA-INV.
•QA-NRM = Analog output signal as congured
•QA-INV = Analog output signal is inverted; QAHIGH 4 mA and
QALOW 20 mA
4. Select the electrical signal.
5. Set the parameter in the QxMENU-QATYP menu to 4 mA ... 20 mA.
8.3.3 Voltage output 0 V ... +10 V
Conguration
Subject to change without notice
1. Set the upper limit value (10 V).
•Set the value in the QAMENU-QAHIGH menu to the level in mm
(e.g. 500 mm).
•Set the value in the QAMENU-QALOW menu to the level in mm
3. Invert the signal.
The analog signal can be inverted in the QAPOL menu.
Set the parameter in the QxMENU-QAPOL menu to QA-INV.
•QA-NRM = Analog output signal as congured
•QA-Inv = Analog output signal is inverted: QAHIGH 0 V and QALOW 10 V
4. Select the electrical signal.
Set the parameter in the QxMENU-QATYP menu to 0 V ... +10 V.
8.4 Advanced functions
8.4.1 Expert mode
Expert mode must rst be set in order to activate special functions.
Logging into expert mode
(e.g. 10 mm).
1. Access the PASSW menu using the arrow pushbuttons.
2. Enter the password 000537 (LFP on the mobile keypad: L=5 / F=3 / P=7).
Expert mode may be locked again if the password is entered incorrectly or if the voltage
supply is disconnected.
8.4.2 Filtering measured values
Activating ltering
Smoothing of the measured value; e.g. in the case of ripples on level surfaces. For fast
level changes, the average of the measured values over X seconds is indicated.
bParameters in the Set lters menu.
The possible values are O, 400 ms, 600 ms, 1000 ms, 1400 ms, 2 s, 5 s, 10 s.
Maximum change of level (plausibility check)
For applications which cause level jumps as a result of signicant interference on the
LFP. Entry for the maximum level dynamic in the application and/or the maximum per-
missible change rate of the level.
1. Log in to expert mode; see “8.4.1 Expert mode”.
2. Reduce the parameter in the EXPRT-CONFIG-MaxCol menu.
AnySpd (50 cm/s) (default), 10 cm/s, 5 cm/s, 2 cm/s
36
Note:
• For MeasMd = HiSpd, any max. change rate is possible
1. Log in to expert mode; see “8.4.1 Expert mode”.
2. Dene the parameter in the EXPRT-Pulse-MaskZn menu.
Note:
This setting can be used only in pulse mode.
8.4.5 Selection of evaluation method
You can switch between pulse mode and foam mode as an evaluation method.
Depending on the selected mode, other evaluation algorithms are used.
Conguration
1. Log in to expert mode; see “8.4.1 Expert mode”.
2. In the EXPRT-Cong-Mode menu, select between Pulse and Foam.
The following rules apply:
•Mode = Pulse: The sensor measures either with or without AutCal.
•Mode = Foam: The sensor measures only with valid CalEmp+CalMed. If no valid
calibration is available, the CalPls message is displayed and the sensor enters
a safe state.
Note:
If AutCal is called up while the sensor is in foam mode, then AutCal is denied and
the error message !Denid is shown.
8.4.6 Testing the conguration
Testing outputs
Switching/analog outputs can be simulated. This makes it possible to check the wiring
and signal values on the connected systems, such as the PLC control, relay and lamps.
Conguration
Activate the Qx switching output
bSet the parameter in the QxMENU-SimQx menu to QxOn.
Additional options:
•QxO = switching output o
•QxNorm = switching output in measuring operation
38
•QxOn = switching output is active
Note:
The simulation is automatically deactivated if the supply voltage is interrupted.
bSet the parameter in the QAMENU-SimCur or SimVol menu to the desired signal
value.
Note:
The simulation is automatically deactivated if the supply voltage is interrupted.
Simulating the level
Even if there is no liquid in the container yet, it is possible to select a lling level in the
menu in order to test the sensor conguration. When simulating a level value, all outputs on the LFP are set according to the dened conguration. The function should not
be selected until a conguration is complete.
Conguration
8OPERATION
•SimCur for current output
•SimVol for voltage output
bSet the parameter to the desired lling level as a % in the SimLev menu.
Note:
• The level simulation refers to the probe length and/or container level
(probe length + oset) if an oset is congured.
• The simulation is only active when there are no error messages.
The simulation is automatically deactivated if the supply voltage is interrupted.
Parameter selection
•SimO: O
•Filling level 0%
•Filling level 25%
•Filling level 50%
•Filling level 75%
•Filling level 100%
8.4.7 Conguring the probe length
1. Log in to expert mode; see “8.4.1 Expert mode”.
Subject to change without notice
2. Access the EXPRT-Cong-Length menu using the arrow and Set pushbuttons.
3. Enter the probe length in the Length menu. Please note the dened probe length in
Chapter “15 Dimensional drawings”.
Note:
• HiSpd: max. length = 2005 mm, response time < 400 ms
• HiAcc: max. length = 6,005 mm, response time < 2,800 ms
Static interference signals in the tank generated by tubes, beams, couplings,
or a cleaning ball can be taught-in. The probe length provides the value for the
teach-in depth.
1. Log in to expert mode; see “8.4.1 Expert mode”.
2. Access the EXPRT-Pulse-CalRng menu using the arrow and Set pushbuttons.
3. Set the value range between 95 and 6005 mm.
Note:
• The value starts from the LFP process connection.
• The value should cover all interference signals.
• Maximum value = probe length – 100 mm.
• The AutCal must then be carried out, see “7 Commissioning”.
• The CalRng parameter should always correspond to the probe length for LFPs with
remote amplier.
8.4.9 Evaluating signal quality
Parameters describe the quality of the measuring signal.
bLog in to expert mode, see “8.4.1 Expert mode”.
SigQa1
Characteristic for the robustness of the EXPRT-Pulse-TrsHld setting.
Not active in foam mode. The displayed value is only valid if the sensor displays the
correct level value.
•Value range: 0% ... 100%
•Good signal: > 40% (a high pulse reserve is provided with the current
bMeasures: Reduce EXPRT-Pulse-TrsHld to increase SigQa1.
Note:
• Changing TrsHld will have an impact on SigQa2 and SigQa3.
• If a satisfactory SigQa1 value cannot be achieved by adjusting TrsHld in conjunction
with the SigQa values, the installation condition must be checked. Using a coaxial
tube improves signal detection, particularly in media with low DK values (e.g. oil).
This setting makes it possible to indicate the level value on the display in relation to
the tank bottom instead of the end of the probe. The actual container level is then
indicated on the display.
Conguration
1. Log in to expert mode; see “8.4.1 Expert mode”.
2. Set the oset in the EXPRT-Cong-Oset menu (0 mm … +3,000 mm).
8OPERATION
IA
L
O
M
IAE
Fig. 8: LFP Cubic
1 Level
2 QALOW/ QAHIGH
SPx/RPx
FHx/FI x
Can be set only in this zone
O: Oset
L: Probe length
M: Measurement length
IA: Inactive area at process connection
IAE: Inactive area at probe end
Subject to change without notice
Note:
If the oset parameter is changed, the SPx/RPx/FLx/FHx/QALOW/QAHIGH parameters
• Auto V = Qa operated with voltage output of 0 V … +10 V
• Auto A = Qa operated with current output of
4 mA … 20 mA
• Auto? = Automated signal detection based on the existing load resistance
During a menu query, either 4 mA ... 20 mA or
0 V ... +10 V is displayed.
QAFAILOutput behavior as per NE43 in the event of a fault (func-
tion only available when current output has been selected
under QATYP).
• 3.5 mA = Analog current output is set to 3.5 mA in the
event of a fault.
• 21.5 mA = Analog current output is set to 21.5 mA in
the event of a fault.
SimCurSee “8.4.6 Testing the conguration”.
SimVolSee “8.4.6 Testing the conguration”.
DspValSetting the display.
• Distan = The display shows the distance in mm in
relation to the end of the probe.
• QaPerc = The display shows the ll level in % in relation
to the QA analog output with the corresponding QAHIGH
and QALOW thresholds.
• QaBarG = The display shows a bar graph in relation to
the QA analog output with the corresponding QAHIGH
and QALOW thresholds.
• QaSign = The display shows the current QA output value
in mA or V.
• QxSign = The display shows the output states.
FilterSee “8.4.2 Filtering measured values”.
SimLevSee “8.4.6 Testing the conguration”.
RstFacResetting the set parameters to the factory settings.
EXPRTSee “8.4.1 Expert mode”.
LockSee “8.4.11 Activating the display lock”.
UnitSee “8.4.12 Selecting the display unit (millimeter/inch)”.
OsetSee “8.4.13 Setting the oset”.
ModeSee “8.4.5 Selection of evaluation method”.
MaxColSee “8.4.2 Filtering measured values”.
MeasMdMeasuring mode.
• HiSpd: max. length = 2,005 mm,
response time < 400 ms
• HiAcc: max. length = 6,005 mm,
response time < 2,800 ms,
(more stable measured values, recommended for
liquids with low DKs and where TrsHld is < 70)
• mode-1: not supported; deactivates current AutCal/
foam calibration
TrsHldThis value describes a factor which determines how strong
AutoTnSee “8.4.3 Automated adjustment of the interference
CalRngCalibration range.
an echo has to be in order to be recognized by the device.
The value range lies between 20% and 500%. The default
is 100% in this case. Only shown if password entered.
• 20% = high sensitivity
• 100% = standard
• 500% = low sensitivity
signal limit”.
• Value range: 95 mm … 6005 mm
Range starting from the process connection in which
static interference signals (coupling sections, welds, spray
balls, etc.) are hidden during the AutCal process. During
the AutCal process, there must not be any medium in the
dened area of +200 mm.
See “8.4.8 Teaching in static interference signals”.
MaskZnSee “8.4.4 Blanking the interference signals in the
masked zone”.
MaskTrSee “8.4.4 Blanking the interference signals in the
When measuring the foam surface, it may be necessary to
reduce the limit. If the sensor displays a limit value that is
too low, it is necessary to reduce the limit.
ResetResets the values for CalEmp and CalMed.
ProbeSpecial settings.
Length • See “7.3 Foam commissioning (with factory settings)”
(LFP Cubic).
CblLenSee “8.4.10 Changing the coaxial cable length”.
TypeChoosing between rod and rope.
InfoSensor information.
FrmVerShows the rmware version.
SerNoShows the serial number.
CalStaDisplays the status of the tank calibration.
The LFP is maintenance-free. We recommend doing the following regularly:
bChecking the probe for contamination.
bChecking the screw connections and plug connections
12.2 Returns
Rinse o and/or clean removed devices before returning them in order to protect
our employees and the environment from dangers posed by residue from measured
materials. Faulty devices can only be examined when accompanied by a completed
return form. A declaration of this type includes information about all materials which
have come into contact with the device, including those which were used for testing purposes, operation, or cleaning. The return form is available on our website
(www.sick.com).
For 5-pin versions: 20% of the probe length measured from the end of the probe
For 8-pin versions: 60% of the probe length measured from the end of the probe