Siemens sitrans lc 300 User manual

Instruction Manual January 2004
LC 300
sitrans

© Siemens MilltronicsProcessInstruments Inc. 2004
Safety Guidelines
Warning notices must be observed to ensure personal safety as well as that of others, and to
protect the product and the connected equipment. These warning notices are accompanied
by a clarification of the level of caution to be observed.
Qualified Personnel
This device/system may only be set up and operated in conjunction with this manual.
Qualified personnel are only authorized to install and operate this equipment in accordance
with established safety practices and standards.
Warning: This product can only function properly and safely if it is correctly transported,
stored, installed, set up, operated, and maintained.
Note: Always use product in accordance with specifications.
Copyright Siemens Milltronics Process
Instruments Inc.2004.AllRights ReservedDisclaimer of Liability
This document is available in bound version and in
electronic version. We encourage users to
purchase authorized bound manuals, or to view
electronic versions as designed and authored by
Siemens Milltronics Process Instruments Inc.
Siemens Milltronics Process Instruments Inc. will
not be responsible for the contents of partial or
whole reproductions of either bound or electronic
versions.
While we have verified the contents of
this manual for agreement with the
instrumentation described, variations
remain possible. Thus we cannot
guarantee full agreement. The
contents of this manual are regularly
reviewed and corrections are included
in subsequent editions. We welcome
all suggestions for improvement.
Technical data subject to change.
MILLTRONICS®is a registered trademark of Siemens Milltronics Process Instruments Inc.
Contact SMPI Technical Publications at the following address:
Technical Publications
Siemens Milltronics Process Instruments Inc.
1954 Technology Drive, P.O. Box 4225
Peterborough, Ontario, Canada, K9J 7B1
Email: [e-mail]
For the libraryof SMPI instruction manuals, visitour Web site: www.siemens-milltronics.com

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Table of Contents
Table of Contents
Introduction to the SITRANS LC 300 ...............................................................................1
SITRANS LC 300 Applications ..............................................................................................................1
SITRANS LC 300 Features ...................................................................................................................1
SITRANS LC 300 Outputs .....................................................................................................................1
Safety Notes .............................................................................................................................................2
The Manual ...............................................................................................................................................2
Technical Specifications: LC 300 .....................................................................................4
Installation ...........................................................................................................................7
Location .....................................................................................................................................................7
Configuration and Dimensions ........................................................................................8
Rod Version with PFA jacket ................................................................................................................9
Cable Version .........................................................................................................................................10
Cable Tensile Strength .........................................................................................................................11
Shortening the Cable ...........................................................................................................................11
Mounting ............................................................................................................................12
Multiple units .........................................................................................................................................12
Wall Restriction .....................................................................................................................................12
Process Cautions .................................................................................................................................13
Interconnection .................................................................................................................14
Signal Amplifier/Power Supply ..........................................................................................................14
Connecting the LC 300 .........................................................................................................................14
Operation ............................................................................................................................15
Start Up ....................................................................................................................................................15
Position 0 .................................................................................................................................................16
Position 1 .................................................................................................................................................16
Position 2 .................................................................................................................................................16
Position 3 .................................................................................................................................................17
Position 4 .................................................................................................................................................18
Position 5 .................................................................................................................................................19
Recommissioning ..................................................................................................................................19
Maintenance ..........................................................................................................................................20
Unit Repair and Excluded Liability ....................................................................................................20
Appendix I: Application Notes .......................................................................................21
Application Notes ..................................................................................................................................21
Appendix II: Approvals ....................................................................................................22
Instrument Label: SITRANS LC 300 ..................................................................................................24
KEMA Certificates and Schedules ...................................................................................................25
Notes: ..................................................................................................................................32

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Table of Contents

7ML19985HE01 SITRANS LC 300 – INSTRUCTION MANUAL Page 1
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Introduction
Introduction to the SITRANS LC 300
The SITRANS LC 300 is a cost-effective instrument for level measurement in high
accuracy applications such as the processing of food and beverages, pharmaceuticals,
detergents and pet food. It performs in liquids, bulk solids and slurries, including viscous
(conductive or non-conductive) materials, even in challenging environments involving
vapour and dust.
The LC 300 is a 2-wire instrument combining a sophisticated, yet easy-to-adjust,
microprocessor transmitter with field-proven Pointek CLS 300 probes.
The electronic component contains the measurement module (driver) and the
microprocessor module. This set of parts forms a calibrated pair, so that readout in pico
Farads (pF) is achieved. An optional safety barrier can be included in the electronic
component.
The probe comprises a measurement section and an active shield section that is a fixed
length. The probe is the primary system sensor, and it indicates the electrical capacitance
value of the measurement section relative to the environment (tank wall, stilling well, or
conductive material). This part of the probe connects to the capacitance detector in the
electronic transmitter.
SITRANS LC 300 Applications
• Food, beverages, and water
• Liquids, slurries, powders, granules, and solids
• Power industry (fly-ash)
SITRANS LC 300 Features
• NPT, BSPT, and JIS connections, DIN and ANSI flanges (other connections upon
request)
• Corrosion resistant construction, PFA, PEEKTM 1, and 316L stainless steel wetted
parts
• 25 m (82 ft) maximum insertion length
• Rugged shear and abrasion resistant probe
• Fully adjustable range: level, damping, diagnostics, etc.
• Field adjustable insertion length for probes without an insulation jacket
• Probe input ESD protection to 55 kV continuous discharge
• Field proven and patented Active-Shield technology and variable frequency
oscillator
SITRANS LC 300 Outputs
• 4 – 20 or 20 – 4 mA, 2–wire current loop circuit
• Isolated from the measurement circuit
• Current signalling according to NAMUR NE 43
1. PEEK is a registered trademark of Victrex plc.

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Introduction
SafetyNotes
Special attention must be paid to warnings and notes highlighted from the rest of the text
by grey boxes.
Safety marking symbols
The Manual
This manual will help you set up your LC 300 for optimum performance. We always
welcome suggestions and comments about manual content, design, and accessibility.
Please direct your comments to [e-mail]. For the complete
library of Siemens Milltronics manuals, go to www.siemens-milltronics.com.
WARNING: relates to a caution symbol on the product, and means
thatfailure to observe the necessary precautions can resultin
death, serious injury, and/or considerable material damage.
WARNING:meansthatfailuretoobservethenecessaryprecautions
can result in death, serious injury, and/or considerable material
damage.
CAUTION: means thatfailure to observe the necessary precautions can
result in considerable material damage.
Note: means important information about the product or that part of the instruction
manual.
Alternating Current
Direct Current
Earth (ground) Terminal
Protective Conductor Terminal
Notes:
• Please follow the installation and operating procedures for a quick, trouble-free
installation and to ensure the maximum accuracy and reliability of your Siemens
Milltronics instrument.
• This manual applies to the SITRANS LC 300 only.

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Introduction
Abbreviations and Identifications
Short form Long Form Description Units
CE / FM / CSA
Conformitè Europèene / Factory
Mutual / Canadian Standards
Association
safety approval
DCS Distributed Control System control room apparatus
Ex Explosion Proof
Exd Flame Proof
ESD Electrostatic Discharge
LRV Lower Range Value value for 0 % (in pF) 4 mA
PED Pressure Equipment Directive safety approval
pF pico Farads 10-12 Farad
PV Primary Variable measured value
Stilling Well Grounded metal tube with
openings
URV Upper Range Value value for 100% (in pF) 20 mA

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Specifications
TechnicalSpecifications: LC300
Power
• Supply voltage 9 – 32 Vdc any polarity, 2-wire current loop
(9 V @ 22 mA), max. resistance value 550 Ω @ 24 V DC
• Measurement signal 4 – 20 mA or 20 – 4 mA
Environmental
Location indoor/outdoor
Altitude 2000 m max.
Ambient temperature – 40 to 85°C (– 40 to 185°F)
Relative humidity suitable for outdoors (Type 4 / NEMA 4 / IP 65
enclosure)
Installation category II
Pollution degree 4
Performance
Measurement range 0 to 3300 pF
Minimum span 3.3 pF
Measurement frequency 600 kHz max.
Accuracy < 0.5% of actual measurement value
Non-linearity and reproducibility < 0.4% full scale and actual measurement value
Temperature stability max. temperature drift of 0.25% of actual capacitance
value
Safety - current signalling according to NAMUR NE 43, signal
3.8 to 20.5, fault ≤3.6 or ≥ 21 mA (22 mA)
- probe input ESD protected to 55 kV
- inputs/outputs fully galvanically isolated
- polarity-insensitive current loop
- wiring connections max. 2.5 mm2, PED / 97 / 23 / EC
Diagnostics1- primary variable (PV) out of measurement limits
- failure in measurement circuit
- memory check sum
- system watch dog
1. See Fault Values on page 18 for detailed descriptions of Diagnostic messages.

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Specifications
Outputs
Current loop
• continuous signal 4 to 20 mA / 20 to 4 mA
User Interface
Display
• local LCD 4–digit (each digit can be 0 to 9 or limited alpha
characters)
Function rotary switch
• position 0 Actual measurement value (in pF)
• position 1 Zero value (LRV) 0% of scale
• position 2 Span value (URV) 100% of scale
• position 3 Actual mA signal and system fault setting according to
NAMUR NE 43
• position 4 Diagnostic information/Software revision
• position 5 Damping
Electrodes
Process connections
• threaded connections AISI 316 L stainless steel, NPT/BSPT/JIS, ¾”, 1”, 1 ¼”
and 1 ½” rod probe connection, 1 ¼” and 1 ½” rope
probe connection
• flat-faced flanges AISI 316 L stainless steel, ANSI (1” to 4”), DIN (NW25
to NW100)1
Probe diameter
• rod probes 19 mm/0.75 inch (with or without PFA jacket)
• rope probe version 9 mm/ 0.35 inch, with PFA jacket
6 mm/ 0.24 inch, without PFA jacket
Probe lengths
• rod version: min. 300 mm (12") - max. 5000 mm (197")
• rope/Cable version: min. 500 mm (20") - max. 25000 mm (984")
Active Shield length
• rod version: 100 mm
• rope/cable version: 125 mm
Max. tensile load (rope/cable version)
• 1900kg (4188 lbs)
1. Other process connections available on request. See Probe: Standard on page 9,
or Probe: Cable on page 10.

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Specifications
Max. horizontal tensile load
• 30 Nm (Rod version)
Wetted Parts
AISI 316L/PEEKTM/PFA1
Enclosure (Electronics)
• construction aluminium, epoxy coated
• ingress protection Type 4 / NEMA 4 / IP65
• cable inlet 2 X ½” NPT
Weight
Depends on configuration
Process Conditions
Pressure range2-1 to 35 barg (-14.6 to 511 psig)
Temperature range -40 to 200° C (-40 to 392° F)
Min. dielectric constant (>r): 1.5
Approvals*
• CE, CENELEC, FM, CSANRTL/C, ATEX
• Lloyd’s Register of Shipping, categories ENV1, ENV2, and ENV5
*Please verify against device nameplate.
1. For a chemical resistance list for PFA/PEEK, contact your local distributor.
2. See the Pressure/Temperature Curve in Appendix I: Application Notes on
page 21.

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Installation
Installation
Location
The SITRANS LC 300 as supplied in the standard probe lengths is normally mounted on
the vessel top or through the tank wall at the detection level (if used as Point Level
switch).
The cable version is designed for top mounting. The cable suspends vertically so that it
reaches into the process at the desired detection level (high or low detection alarm).
Notes:
• Installation shall only be performed by qualified personnel and in accordance
with local governing regulations.
• This product is susceptible to electrostatic shock. Follow proper grounding
procedures.
Angle Horizontal
Vertical

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Configuration and Dimensions
Configuration and Dimensions
access lid to electronics and
operation buttons
electronics (power supply
and signal processing)
driver
safety barrier (not applicable
for General Purpose)
aluminum enclosure (Type 4 /
NEMA 4 / IP 65)
cable gland,
½” NPT (x2)
thermal isolator
(option)
100 mm (4")
PFA insulation
125mm
(4.9") 170mm
(6.7")
25000 mm
(985") max.
cable / rope
with PFA jacket-9 mm (0.35")
without PFA jacket-6 mm (0.25")
tensile
weight
ø 32 mm
(1.26")
ø 19 mm
(0.75")
5000 mm
(200")
Rod, with or
without PFA
insulation
100 mm
(3.94")

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Configuration and Dimensions
Rod Version with PFA jacket
C
59 mm
(2.3")
76 mm
(3") 120 mm
(4.7")
lid
lid clip
½” NPT
electronics
enclosure
active shield
100 mm (3.94")
probe
ø19 mm (0.75")
300 to 5000 mm
(14 to 197")
145 mm
(5.7")

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Configuration and Dimensions
Cable Version
C
59 mm (2.3")
76 mm
(3") 120 mm
(4.7")
lid
lid clip
½” NPT
electronics
enclosure
active shield
125 mm (4.92")
145 mm (5.7")
nominal
flexible extension
(customer
specified length)
cable
with PFA jacket-9 mm (0.35")
without PFA jacket-6 mm (0.24")
250 mm
(9.85")
probe /
weight
ø32mm
(1.26")
25000mm
(985") max.

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Configuration and Dimensions
Cable Tensile Strength
Always confirm that the load carrying capability of the silo/tank roof is sufficient to
withstand the actual force on the cable conditions, especially where the force will be, or
could be, as great as 1900 kg / 4188 lbs. A cable (rope) probe with a PFA jacket reduces
the amount of possible product build-up on the probe as well as the tensile force on the
cable.
Shortening the Cable
Methods
• An angle grinder (preferably with a disc suitable for stainless steel)
or
• Wire cutters (suitable for piano cable Ø6 – 9mm).
Procedure
1. Loosen the three set screws and pull weight from the cable.
2. Grind/cut the cable to the required length, and then remove rough edges from the
cable.
3. Ensure that cable strands are properly seated in the lay of the cable (i.e. no wire
strands sticking outside the normal cable profile). Make sure ALL strands are
properly seated before continuing the assembly.
4. Push the weight onto the cable while simultaneously rotatingitcounter-clockwise
around the cable. Make sure that no cable strands are pushed out of their position
in the cable and that the cable is fully inserted.
5. Re-fasten the weight by tightening the three set screws.
CAUTION: Do not exceed the tensile strength of the cable at 1900 kg /
4188 lbs.

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Mounting
Mounting
Multiple units
Wall Restriction
End View Side View
500 mm (20") min
500 mm (20") min
500 mm (20") min
Sensors must be 500 mm (20") apart. Mount diagonally if vertical space is restricted.
50 mm (2") min 50 mm
(2") min
Notes:
• These drawings are not to scale.
• Distance applies to standard version.

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Mounting
Process Cautions
Caution: Keep unit out of path of falling
material.
Caution: Consider material surface
configuration when installing unit.
500 mm
(20") min
Caution: Protect probe from falling
material. Caution: Tensile load must not exceed probe or vessel rating.
Note:Buildup of material in active shield area does not affect the instrument.

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Interconnection
Interconnection
Signal Amplifier/Power Supply
The SITRANS LC 300 uses a switched power supply circuit that makes the most efficient
use of the available power present on the terminals. If the signal current is low (4 mA),
the terminal voltage will increase due to a voltage drop of other components in the loop,
and if the signal current is high (20 mA), the terminal voltage will decrease.
Loosen the lid clip and remove the enclosure cover to access connectors and electronics.
The identification label is on the inside of the enclosure.
Connecting the LC 300
1. Loosen the retaining lid clip and remove the enclosure cover.
2. Loosen the cable gland and thread the cable through it.
3. Connect the power/signal conductor wires to the current-loop terminal blocks (any
polarity). The loop voltage must be between 9 and 32 Vdc.
4. Ground the enclosure by connecting the housing and the process connection with
either the stilling well and/or the tank wall, using the ground lug near the bottom of
the housing.
5. Check that all connections are secure.
6. Replace enclosure cover and tighten retaining lid clip.
WARNING: The sensor terminal block connects the electronics to the
measurement module, providing the supply voltage and receiving the frequency
signal from the measurement. The user should not alter these connections.
K1
RED (+)
BLACK (0)
ORANGE (S)
SENSOR
CURRENT-LOOP
SIGNAL
UP/+ BUTTON DOWN/- BUTTON
MENU/FUNCTION
SELECTOR
0
S1
K3
B2B1
FOR FACTORY
SOFTWARE
UPDATE USE ONLY
4-20 mA (2-wire)
current-loop
measurement signal
for factory
software update
use only
menu/function
selector up / + button down / - button

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Operation
Operation
Start Up
The LC 300 user interface comprises the display (LCD), the 6-position rotary switch, and
two push-buttons. Select a menu using the rotary switch; select and/or alter a readout or
value using the push-buttons.
The rotary switch can be set from 0 to 5. Each position represents a menu. The position
wraps from 5 to 0.
The LCD (Liquid Crystal Display) displays settings altered by the rotary switch and the
push-buttons.
Menu Functions
When you turn the rotary switch, the LCD shows the new menu selection for about 1
second followed by the data for that selection. When you alter a read-out or value, a
colon (:) is displayed when the debounce delay timer has expired and the new value has
been accepted.
Positions 0 (Primary Variable in pF) and 3 (corresponding loop-current values in mA) are
the recommended positions during normal operation.
Rotary
Switch
Position
01 2 3 4 5
Display Read PV
(pF)
Read LRV (pF)
(0% level)
Read URV (pF)
(100% level)
Read mA loop-
current Diagnostics Damping
Up button Increase LRV Increase URV Set fault protection
setting to 22 mA
Product
Version
Increase
Damping
Down
button Decrease LRV Decrease URV Set fault protection
setting to 3.6 mA
Decrease
Damping
Both
buttons Set LRV from PV Set URV from PV Disable fault
protection
Reset/
Acknowledge
Fault
Set Damping
to 1.0 0
rotary switch up button down button

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Operation
Position 0
Position 1
Position 2
Display • LCD displays the PV (Primary Variable) in pF.
• In case of a system fault, the display alternates between PV value
and Flt. View the fault details in menu 4.
• Pressing either or both push-buttons in menu 0 has no effect.
Display • LCD displays the LRV (Lower Range Value) in pF, occurring when the
range is at 0% and the loop-current is set to 4 mA.
Up
Button
• Pressing Up button for less than 1 second adjusts the LRV in the
current step size (initially 0.01 pF).
• Holding the Up or Down buttons for more than 1 second increases
the step size to 0.1 pF. If you continue to hold the button, the step size
increases to 10, 100, and 1000 (displayed as 1E3). When no button is
pressed for 4 seconds, the step size decreases to the next smallest
value. At each step size, press the buttons for less than 1 second to
adjust the value.
Down
Button
• Pressing Down button for less than 1 second decreases the LRV in
the current step size (initially 0.01 pF).
• When held for more than 1 second, the Down Button will increase
the step size by 0.1, 10, 100, and 1000. When no button is pressed for 4
seconds, the step size decreases to the next smallest value.
Both
Buttons
• Pressing both buttons for more than 1 second sets the LRV to the
current PV value.
Display • LCD displays the URV (Upper Range Value) in pF, occurring when the
range is at 100% and the loop-current is set to 20 mA.
Up
Button
• Pressing Up button for less than 1 second adjusts the URV in the
current step size (initially 0.01 pF).
• Holding the Up or Down buttons for more than 1 second increases
the step size to 0.1 pF. If you continue to hold the button, the step size
increases to 10, 100, and 1000 (displayed as 1E3). When no button is
pressed for 4 seconds, the step size decreases to the next smallest
value. At each step size, press the buttons for less than 1 second to
adjust the value.