Instruction Manual November 2002

sitrans
LC 300
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 Disclaimer of Liability

Instruments Inc. 2002. All Rights Reserved

This document is available in bound version and in While we have verified the contents of
electronic version. We encourage users to this manual for agreement with the
purchase authorized bound manuals, or to view instrumentation described, variations
electronic versions as designed and authored by remain possible. Thus we cannot
Siemens Milltronics Process Instruments Inc. guarantee full agreement. The
Siemens Milltronics Process Instruments Inc. will contents of this manual are regularly
not be responsible for the contents of partial or reviewed and corrections are included
whole reproductions of either bound or electronic in subsequent editions. We welcome
versions. 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: techpubs@siemens-milltronics.com

For the library of SMPI instruction manuals, visit our Web site: www.siemens-milltronics.com

© Siemens Milltronics Process Instruments Inc. 2002

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
Appendix I: Application Notes ...........................................................................................................21
Application Notes ..................................................................................................................................21
Appendix II: Approvals ...........................................................................................................................22
Instrument Label: SITRANS LC 300 ..................................................................................................24
KEMA Certificates and Schedules ...................................................................................................25

1
2
Introduction to the SITRANS LC 300

Introduction
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,

mmmmm
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.

7ML19985HE01 SITRANS LC 300 – INSTRUCTION MANUAL Page 1

 Safety Notes
Special attention must be paid to warnings and notes highlighted from the rest of the text
by grey boxes.
Introduction

WARNING: relates to a caution symbol on the product, and means

mmmmm

that failure to observe the necessary precautions can result in

death, serious injury, and/or considerable material damage.

WARNING: means that failure to observe the necessary precautions

can result in death, serious injury, and/or considerable material
damage.

CAUTION: means that failure 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.

Safety marking symbols

Alternating Current
Direct Current

Earth (ground) Terminal

Protective Conductor Terminal

The Manual
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.

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 techpubs@siemens-milltronics.com. For the complete
library of Siemens Milltronics manuals, go to www.siemens-milltronics.com.

Page 2 SITRANS LC 300 – INSTRUCTION MANUAL 7ML19985HE01

Abbreviations and Identifications
Short form Long Form Description Units

Introduction
Conformitè Europèene / Factory
CE / FM / CSA Mutual / Canadian Standards safety approval

mmmmm
Association
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
Grounded metal tube with
Stilling Well
openings
URV Upper Range Value value for 100% (in pF) 20 mA

7ML19985HE01 SITRANS LC 300 – INSTRUCTION MANUAL Page 3

 Technical Specifications: LC 300
Power
• Supply voltage 9 – 32 Vdc any polarity, 2-wire current loop
(9V @ 22 mA)
• Measurement signal 4 – 20 mA or 20 – 4 mA

Environmental
Location indoor/outdoor
Altitude 2000 m max.
Specifications

Ambient temperature – 40 to 85°C (– 40 to 185°F)

mmmmm

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.

Page 4 SITRANS LC 300 – INSTRUCTION MANUAL 7ML19985HE01

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

Specifications
• position 2 Span value (URV) 100% of scale

mmmmm
• 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.

7ML19985HE01 SITRANS LC 300 – INSTRUCTION MANUAL Page 5

 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
Specifications

Depends on configuration
mmmmm

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.

Page 6 SITRANS LC 300 – INSTRUCTION MANUAL 7ML19985HE01

Installation

Location
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.

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).

Angle Horizontal

Installation

Vertical mmmmm

7ML19985HE01 SITRANS LC 300 – INSTRUCTION MANUAL Page 7

 Configuration and Dimensions
access lid to electronics and
operation buttons
electronics (power supply
and signal processing)
driver
safety barrier (not applicable
for General Purpose)
cable gland, aluminum enclosure (Type 4 /
½” NPT (x2) NEMA 4 / IP 65)

thermal isolator
(option)

100 mm (4")

PFA insulation 100 mm

125 mm (3.94")
(4.9") 170 mm
(6.7")

Rod, with or
5000 mm without PFA
(200") insulation

25000 mm
(985") max.
Configuration and Dimensions

cable / rope
with PFA jacket-9 mm (0.35")
without PFA jacket-6 mm (0.25")
mmmmm

ø 19 mm
(0.75")

tensile
weight

ø 32 mm
(1.26")

Page 8 SITRANS LC 300 – INSTRUCTION MANUAL 7ML19985HE01

Rod Version with PFA jacket
C

59 mm
(2.3")

76 mm
(3")
120 mm
(4.7")
lid

lid clip

½” NPT

electronics 145 mm
enclosure (5.7")

active shield
100 mm (3.94")

Configuration and Dimensions

mmmmm

300 to 5000 mm
(14 to 197")
probe

ø19 mm (0.75")

7ML19985HE01 SITRANS LC 300 – INSTRUCTION MANUAL Page 9

 Cable Version
C

59 mm (2.3")

76 mm
(3")
120 mm
lid (4.7")

lid clip

½” NPT

electronics 145 mm (5.7")

enclosure nominal

active shield
125 mm (4.92")

flexible extension
(customer
specified length)

cable
with PFA jacket-9 mm (0.35") 25000 mm
without PFA jacket-6 mm (0.24") (985") max.
Configuration and Dimensions

probe /
mmmmm

weight

250 mm
(9.85")

ø32mm
(1.26")

Page 10 SITRANS LC 300 – INSTRUCTION MANUAL 7ML19985HE01

Cable Tensile Strength
CAUTION: Do not exceed the tensile strength of the cable at 1900 kg /
4188 lbs.

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 rotating it counter-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.

Configuration and Dimensions

mmmmm

7ML19985HE01 SITRANS LC 300 – INSTRUCTION MANUAL Page 11

 Mounting
Multiple units
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.

Wall Restriction

Notes:
Mounting

50 mm (2") min
50 mm • These drawings are not to scale.
mmmmm

(2") min • Distance applies to standard version.

Page 12 SITRANS LC 300 – INSTRUCTION MANUAL 7ML19985HE01

Process Cautions
Caution: Keep unit out of path of falling Caution: Consider material surface
material. configuration when installing unit.

Caution: Protect probe from falling Caution: Tensile load must not
material. exceed probe or vessel rating.

500 mm
(20") min

Note: Buildup of material in active shield area does not affect the instrument.
Mounting
mmmmm

7ML19985HE01 SITRANS LC 300 – INSTRUCTION MANUAL Page 13

 Installation.fm Page 14 Thursday, December 5, 2002 8:38 AM

Interconnection Interconnection

Signal Amplifier/Power Supply

mmmmm

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.
ORANGE (S)
BLACK (0)
RED (+)

K1
SENSOR

K3
4-20CURRENT-LOOP
mA (2-wire)
forFOR
factory
FACTORY current-loop
SIGNAL
software update
SOFTWARE measurement signal
useUPDATE
only USE ONLY

B1 B2
0

S1

menu/function
MENU/FUNCTION
selector
SELECTOR upUP/+
/ + button
BUTTON down / - button
DOWN/- BUTTON

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.

Page 14 SITRANS LC 300 – INSTRUCTION MANUAL 7ML19985HE01

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.

Operation
mmmmm
rotary switch up button down button

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
Rotary
Switch 0 1 2 3 4 5
Position
Read PV Read LRV (pF) Read URV (pF) Read mA loop-
Display (pF) (0% level) (100% level) current
Diagnostics Damping

Set fault protection Product Increase

Up button Increase LRV Increase URV
setting to 22 mA Version Damping
Down Set fault protection Decrease
Decrease LRV Decrease URV
button setting to 3.6 mA Damping

Both Reset/
Disable fault Set Damping
Set LRV from PV Set URV from PV Acknowledge
buttons protection
Fault
to 1.00

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.

7ML19985HE01 SITRANS LC 300 – INSTRUCTION MANUAL Page 15

 Position 0
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.

Position 1
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.
Operation

Up • Pressing Up button for less than 1 second adjusts the LRV in the
mmmmm

Button 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 • Pressing Down button for less than 1 second decreases the LRV in
Button 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 • Pressing both buttons for more than 1 second sets the LRV to the
Buttons current PV value.

Position 2
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 • Pressing Up button for less than 1 second adjusts the URV in the
Button 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.

Page 16 SITRANS LC 300 – INSTRUCTION MANUAL 7ML19985HE01

 Down • Pressing Down button for less than 1 second decreases the URV in
Button 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 • Pressing both buttons for more than 1 second sets the URV to the
Buttons current PV value.

Position 3
Position 3 displays the Analog signal as it is set for the loop current. The Up and Down
buttons set the system fault protection settings (according to NAMUR NE 43). System

Operation
fault protection is used by D.C.S. equipment to determine whether or not the LC 300 is

mmmmm
presenting a reliable signal.
When a system fault occurs:
Position 3 Fault Current Signal to
Menu 3 LCD Display Menu 0 reading
Protection Setting D.C.S
C:Hi 22 mA 22 mA pF reading
C:Lo 3.6 mA 3.6 mA alternating with FLT
C:An mA value at time of fault none pF reading

Display • LCD shows the Analog Signal as it is set for the loop-current in mA.
Normal primary variables would give mA values between 3.8 mA
(lower saturation point) and 20.5 mA (upper saturation point).
• When the reading goes above the URV or below the LRV but still
within the measurement range of the unit, it will remain at 20.5 or 3.8
respectively until the level returns between URV and LRV.

Up • Pressing the Up button for less than 1 second shows the system fault
Button protection setting.
• Holding the Up button for longer than 1 second will change the fault
protection setting to C:Hi.1

Down • Pressing the Down button for less than 1 second shows the system
Button fault protection setting.
• Holding the Down button for longer than 1 second will change the
fault protection setting to C:Lo.

Both • Pressing both buttons for more than 1 second disables the system
Buttons fault protection and the LCD will read C:An.
1.
System errors that would trigger a fault are a checksum error, an absence
of measurement signal, or a primary variable beyond 1.66 pF (low) or
3300 pF (high).

7ML19985HE01 SITRANS LC 300 – INSTRUCTION MANUAL Page 17

 Position 4
Display • LCD shows diagnostic information. A correctly operating device
shows 0.00 on the LCD. See chart below for explanation of system
fault values.

Up • LCD shows revision information. Please note this information when

Button calling Siemens Milltronics representatives for assistance.

Both • Holding both buttons for more than 1 second will try to reset the error
Buttons status. The LCD reads 0.00 when the status has been successfully
reset. Monitor the LC 300 more closely after a diagnostic error has
occurred.
Operation

Fault values
mmmmm

128 The device is in calibration mode. The measurement values and the
loop-current setting may no longer be trusted.

64 A checksum error has occurred in the program and/or data memory.

The measurement values and the loop-current setting may no longer
be trusted.

32 The LC 300 system watchdog has been activated. This fault can be
combined with fault 64, resulting in fault 96. The measurement values
and the loop-current setting may no longer be trusted.

8 An arithmetic error has occurred, perhaps caused by an incorrect

value setting. This event type error will rarely affect the operation of
the LC 300.

4 An error occurred while trying to store settings in the local non-

volatile memory. The LC 300 may not operate correctly.

2 The primary variable has exceeded the device limits (1.66 pF and 3300
pF). Check that the probe is correctly connected to the measurement
module.

1 The measurement circuit no longer emits signal. Check the wiring

to/from the measurement module or barrier circuit.

Page 18 SITRANS LC 300 – INSTRUCTION MANUAL 7ML19985HE01

Position 5
Display • LCD shows the damping value. The damping value alters the speed
at which the primary variable will track the signal from the probe.

Up • Pressing Up button for less than 1 second increases the damping

Button value in 0.01 steps. Damping can be set to any value from 1.0 to
1000.0
• Holding the Up or Down buttons for more than 1 second increases
the step size to 0.1. 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.

Operation
mmmmm
Down • Pressing Down button for less than 1 second decreases the damping
Button value in 0.01 steps. Damping can be set to any value from 1.0 to
1000.0
• 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. At each
step size, press the buttons for less than 1 second to adjust the value.

Both • Holding both buttons for more than 1 second sets the damping value
Buttons back to 1.0 (default).

Recommissioning
The LC 300 should be recommissioned whenever the transmitter or probes are replaced.
The LC 300 LRV will be programmed as factory default. The LRV can be re-adjusted in
menu 1 when the probe is at least 20 cm away from material.

Setting URV
If probe is fully covered in application:
Set URV by pressing both buttons for more than 1 second in menu 2 when probe is fully covered.
If probe is rarely or never fully covered, set the LC 300 to your application based on the following
example:
LRV (0%) Menu 1 reads 12.5 pF
Actual level is at 45% of the measurement length of probe:
PV (45%) Menu 0 reads 37 pF
The correct setting for URV:
[(PV–LRV) * 100 / actual level in %] + LRV]
URV = [(37–12.5) * 100 / 45] +12.5
= 66.94 pF
When calculating the URV, best results are achieved when using the highest possible actual level.

7ML19985HE01 SITRANS LC 300 – INSTRUCTION MANUAL Page 19

 Maintenance
The SITRANS LC 300 requires no regular maintenance or cleaning. Even with significant
build-up on the SITRANS LC 300 probe, the level controller will continue to operate.

Note: Build-up of material on the active shield area has little or no effect on the
performance of the SITRANS LC 300.
Operation
mmmmm

Page 20 SITRANS LC 300 – INSTRUCTION MANUAL 7ML19985HE01

Appendix I: Application Notes

Application Notes
Temperature and Pressure Recommendations for Application

Appendix I
mmmmm
Note: 1 bar = 100 Pascals

7ML19985HE01 SITRANS LC 300 – INSTRUCTION MANUAL Page 21

 Appendix II: Approvals

WRITTEN DECLARATION OF CONFORMITY

We, Siemens Milltronics Process Instruments B.V.
Nikkelstraat 10 - 4823 AB BREDA - The Netherlands
Declare, solely under own responsibility, that the product

Capacitance Level Transmitter, SITRANS LC 300

Mentioned in this declaration, complies with the following standards and/or normative
documents:
Requirements Remarks Certificate No
Environment Commercial, light Industrial and industrial 2017488-QUA/EMC 02-4158
EN 61326: 1998 Product group standard for “Electrical equipment
for measurement, control and laboratory use”,
from which:
EN 55011: 1998 Emission – Class B
EN 61000-4-2: 1995 Electrostatic Discharge (ESD) Immunity
EN 61000-4-3: 1996 Radiated Electro-Magnetic Field Immunity
EN 61000-4-4: 1995 Electrostatic Fast Transient (EFT) Immunity
EN 61000-4-5: 1995 Surge Transient Immunity
EN 61000-4-6: 1996 Conducted Radio-Frequency Disturbances Immunity

ATEX Directive 94/9/EC Audit Report No 2003068 KEMA 00ATEXQ3047

II 1/ 2 GD EEx d [ia] IIC T6…T1 KEMA 00ATEX2040X

0344 T 100 °C IP 66
EN 50014: 1992 General Requirements
EN 50018: 1994 Flameproof Enclosures "d"
Appendix II

EN 50020: 1994 Intrinsic Safety “i”

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EN 50284: 1999 Special Requirements for Category 1G Equipment

EN 50281-1-1: 1998 Dust Ignition Proof
The notified body: N.V. KEMA – Utrechtseweg 310 – 6812 AR Arnhem –
The Netherlands
97/23/EC Pressure Equipment Directive Lloyd’s Register, DAD No.:
8033472, 8033473, 8033628
The notified body: Stoomwezen B.V. – Weena Zuid 168 – 3012 NC
Rotterdam – The Netherlands

Location: Breda Named Representative: C.S. van Gils

Date: June 19th, 2002 Function: Managing Director
Note: For specific safety specifications, please consult the instrument label.

Page 22 SITRANS LC 300 – INSTRUCTION MANUAL 7ML19985HE01

 SCHRIFTLICHE KONFORMITÄTSERKLÄRUNG
Erklärung der, Siemens Milltronics Process Instruments B.V.
Nikkelstraat 10 - 4823 AB BREDA - Niederlande
Wir erklären hiermit auf eigene Verantwortung, dass das

Kapazitive Füllstand Messgerät, SITRANS LC 300

Das Gegenstand dieser Erklärung ist, mit den folgenden Normen und/oder Regelwerken
übereinstimmt:
Anforderungen Bemerkungen Zertifizierungs-Nr.
Umwelt Handel, Leichtindustrie und Industrie 2017488-QUA/EMC 02-4158
EN 61326: 1998 Standard Produkt Gruppe für Elektrische Mess-
Regel und Laborgeräte bezüglich:
EN 55011: 1998 Störaussendung - Klasse B
EN 61000-4-2: 1995 Überspannungsschutz (ESD)
EN 61000-4-3: 1996 Elektromagnettische Verträglichkeit
EN 61000-4-4: 1995 Störfestigkeit gegen schnelle Transienten
EN 61000-4-5: 1995 Störfestigkeit gegen Stoßspannungen
EN 61000-4-6: 1996 Störfestigkeit gegen leitungsgeführte Störgrößen

ATEX Richtlinie 94/9/EC Prüfungsbericht Nr 2003068 KEMA 00ATEXQ3047

II 1/ 2 GD EEx d [ia] IIC T6…T1 KEMA 00ATEX2040X

0344 T 100 °C IP 66
EN 50014: 1992 Allgemeine Bestimmungen
EN 50018: 1994 Druckfeste Kapselung "d
EN 50020: 1994 Eigensicherheit "i"
EN 50284: 1999 Besondere Bestimmungen für Betriebsmittel der Kategorie 1G
EN 50281-1-1: 1998 Staub-Ex-Sicherheit
Appendix II

Benachrichtigte Stelle: N.V. KEMA – Utrechtseweg 310 – 6812 AR Arnhem – mmmmm

Niederlande
97/23/EC Richtlinie über Druckgeräte
Lloyd’s Register, DAD No.:
8033472, 8033473, 8033628
Benachrichtigte Stelle: Stoomwezen B.V. – Weena 168 – 3012 NC
Rotterdam– Niederlande

Ort, Breda Name des Vertreters, C.S. van Gils

Datum, 19 Juni 2002 Stellung, Managing Director
Hinweis: Besondere Sicherheitsangaben finden Sie auf den Typenschild

7ML19985HE01 SITRANS LC 300 – INSTRUCTION MANUAL Page 23

 Appendix II Instrument Label: SITRANS LC 300
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Page 24 SITRANS LC 300 – INSTRUCTION MANUAL 7ML19985HE01

KEMA Certificates and Schedules

Appendix II
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7ML19985HE01 SITRANS LC 300 – INSTRUCTION MANUAL Page 25

 Appendix II
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Page 26 SITRANS LC 300 – INSTRUCTION MANUAL 7ML19985HE01

 Appendix II
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7ML19985HE01 SITRANS LC 300 – INSTRUCTION MANUAL Page 27

 Appendix II
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Page 28 SITRANS LC 300 – INSTRUCTION MANUAL 7ML19985HE01

 Appendix II
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7ML19985HE01 SITRANS LC 300 – INSTRUCTION MANUAL Page 29

 Appendix II
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Page 30 SITRANS LC 300 – INSTRUCTION MANUAL 7ML19985HE01

Index
A position 2 16
abbreviations position 3 17
list 3 position 4 18
accuracy 4 position 5 19
analog signal 17 mounting 12
appendix multiple units 12
application notes 21 O
approvals 22 operation 15
application notes 21 outputs 1
applications 1 P
approvals 6, 22 position 0 16
B position 1 16
build-up 20 position 2 16
C position 3 17
cable position 4 18
shortening 11 position 5 19
tensile strength 11 power supply 4
configuration 8 primary variable 16
connections 14 probes 5
D process cautions 13
damping value 19 process connection 5
diagnostics 18 R
fault values 18 recommissioning 19
dimensions 8 S
cable 10 signal amplifier 14
standard 9 SITRANS LC 300
display 5 applications 1
F configuration 8
fault values 18 features 1
features 1 outputs 1
I start up 15
identification label 14 system fault protection 17
identifications T
list 3 transmitter 4
installation U
location 7 upper range value 16
interconnection 14 URV 16
signal amplifier 14
introduction to SITRANS LC 300 1
L
lower range value 16
LRV 16
M
maintenance 20
menu
position 0 16
position 1 16
 www.siemens-milltronics.com

Siemens Milltronics Process Instruments Inc. Siemens Milltronics Process Instruments Inc. 2002
1954Technology Drive, P.O. Box 4225 Subject to change without prior notice
Peterborough, ON. Canada K9J 7B1
Tel: (705) 745-2431 Fax: (705) 741-0466 Rev. 1.0
Email: techpubs@siemens-milltronics.com
*7ml19985HE01*
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