Levitronix LEVIFLOW LFS-SU User manual

User Manual for LEVIFLOW®LFS-SU Flowmeters
www.levitronix.com
PL-4509-00, Rev09, DCO# 21-230
First Release: 11-Dec-2014
Last Update: 07-Oct-2021
LEVIFLOW®LFS-SU
SINGLE-USE FLOWMETERS
USER MANUAL
LEVIFLOW®Single-Use Sensors: LFS-03SU, -06SU, -10SU, -15SU, -20SU
LEVIFLOW®Converter: LFC-1C-PC, LFC-6CIO-PC (6-Channel)
This manual contains information necessary for the safe and proper use of the LEVIFLOW®LFS-SU single-use
flowmeter series. Included are specifications for the standard configuration, components, and instructions regarding its
use, installation, operation, adjustment, inspection and maintenance. For special configuration of the LEVIFLOW®
flowmeters refer to accompanying information. If the flowmeters shall be configured for other parameter settings, then
the Levitronix®Service Software (see relevant manual Levitronix

Doc.# PL-4048-00) is necessary. For the multi-
channel converter LFC-6CIO-PC the Levitronix®Service Software version V2.0.5.0 or higher is needed.Please
familiarize yourself with the contents of this manual to ensure the safe and effective use of this product. After reading,
please store the manual where the personnel responsible for operating can readily refer to it at any time.

User Manual for LEVIFLOW®LFS-SU Flowmeters
www.levitronix.com
PL-4509-00, Rev09, DCO# 21-230
2
Table of Contents
1SAFETY PRECAUTIONS ..........................................................................................................................................3
2SPECIFICATIONS .....................................................................................................................................................4
2.1 Component Overview........................................................................................................................................4
2.2 Standard System Configurations.......................................................................................................................6
2.2.1 Single Channel System Configuration with LFC-1C-PC....................................................................................................6
2.2.2 Multi-Channel Configuration with LFC-6CIO-PC...............................................................................................................6
2.3 Specifications of Converter................................................................................................................................7
2.3.1 Specifications of Single-Channel Converter LFC-1C-PC ..................................................................................................7
2.3.2 Specifications of Multi-Channel Converter LFC-6CIO-PC.................................................................................................7
2.3.3 Overview of Parameter Configuration...............................................................................................................................8
2.4 Specifications of Single-Use Sensors................................................................................................................9
2.4.1 General Specifications .....................................................................................................................................................9
2.5 Basic Dimensions of Main Components..........................................................................................................10
2.5.1 Dimensions of Sensors ..................................................................................................................................................10
2.5.2 Dimensions of Converters..............................................................................................................................................11
2.5.3 Dimensions of Adaptor Cables.......................................................................................................................................12
3INSTALLATION.......................................................................................................................................................13
3.1 Installation of Converter LFC-1C-PC...............................................................................................................13
3.1.1 Overview and Preparation..............................................................................................................................................13
3.1.2 Instructions for Electrical Installation...............................................................................................................................14
3.1.3 Instructions for Mechanical Installation...........................................................................................................................15
3.2 Installation of Converter LFC-6CIO-PC ...........................................................................................................16
3.2.1 Overview and Preparation..............................................................................................................................................16
3.2.2 Instructions for Electrical Installation...............................................................................................................................18
3.2.3 Instructions for Mechanical Installation...........................................................................................................................19
3.3 Installation of Sensors .....................................................................................................................................20
3.3.1 Overview and Preparation..............................................................................................................................................20
3.3.2 Instructions for Electrical Installation...............................................................................................................................20
3.3.3 Instructions for Mechanical and Hydraulic Installation.....................................................................................................21
4OPERATION............................................................................................................................................................22
4.1 General Timing Specifications.........................................................................................................................22
4.1.1 Startup Time ..................................................................................................................................................................22
4.1.2 Thermal Stability Time....................................................................................................................................................22
4.1.3 Zero Adjustment Activation Time....................................................................................................................................22
4.1.4 Automatic Zero Adjustment duration...............................................................................................................................22
4.2 System Operation with LFC-1C-PC.................................................................................................................22
4.2.1 Standalone Operation with Display.................................................................................................................................22
4.2.2 Display Messages..........................................................................................................................................................22
4.2.3 Operation with PLC Interface..........................................................................................................................................23
4.2.4 Operation with Levitronix®Service Software...................................................................................................................24
4.2.5 Operation with RS485....................................................................................................................................................24
4.3 System Operation with LFC-6CIO-PC.............................................................................................................25
4.3.1 Standard Operation with PLC Interface ..........................................................................................................................25
4.3.2 Operation with RS485....................................................................................................................................................25
4.3.3 Standalone Operation with Display.................................................................................................................................25
4.3.4 Operation with Levitronix®Service Software...................................................................................................................25
4.4 Measurement of Dynamic Flow Profiles ..........................................................................................................25
5INSPECTION AND MAINTENANCE .......................................................................................................................26
6TROUBLESHOOTING.............................................................................................................................................26
6.1 Common Troubles...........................................................................................................................................26
6.2 Troubleshooting with Levitronix®Service Software..........................................................................................26
7TECHNICAL SUPPORT ..........................................................................................................................................27
8APPENDIX...............................................................................................................................................................28
8.1 Regulatory Status............................................................................................................................................28
8.1.1 CE Marking....................................................................................................................................................................28
8.1.2 Disposal of Equipment –WEEE Directive 2012/19/EU...................................................................................................28
8.2 Symbols and Signal Words..............................................................................................................................29

User Manual for LEVIFLOW®LFS-SU Flowmeters
www.levitronix.com
PL-4509-00, Rev09, DCO# 21-230
3
1 Safety Precautions
CAUTION
Do not under any circumstances open the converter or sensor housing.
Levitronix does not assume responsibility for any damage, which occurs
under such circumstances.
!
WARNING
Hazardous voltage may be present.
In case of the usage of an inadequate AC/DC power supply, mains
voltages may be present (even if the system is designed for 24VDC).
The converter must be placed in a spill protected environment. Do not
under any circumstances open the powered converter.
The usage of galvanic separated 3rd party tested (like CE and/or UL)
AC/DC supply is highly recommended.
!
WARNING
Toxic chemicals may be present.
When using the flowmeter to measure chemicals skin contact and toxic
gases may be hazardous to your health. Wear safety gloves and other
appropriate safety equipment.

User Manual for LEVIFLOW®LFS-SU Flowmeters
www.levitronix.com
PL-4509-00, Rev09, DCO# 21-230
4
2 Specifications
2.1 Component Overview
Figure 1: LEVIFLOW®flow sensors and converter
Figure 2: Accessories
Figure 3: Converter starter kit (see Table 2 Position 4) with components
Single-Channel Converter LFC-1C-PC
4-Digit Display
Zero Adjustment
Adress Setting for RS485
Piezo Transducers
In-/Output Electrical Interface
Digital
Signal Processor
DSP
Levitronix®
Service Software
Interconnect Cable.
Flow Out
LEVIFLOW®
Flow Sensors
Clamp-On
Series LFSC
Single-Use
Series LFS-SU
Flow In
EMI Ferrite
LEVIFLOW®
Starter-Kit USB Stick
USB to RS485
Converter with Cable
Converter
Connection Cable
AC/DC Supply
International
Mains Insert
1a
2
1b
1e
1c
1d
5a
5b
6
C
B
A
G
C
E
F
D
B
A
7a
7b
7c
7d
A
3
8a
8b
B
9
D

User Manual for LEVIFLOW®LFS-SU Flowmeters
www.levitronix.com
PL-4509-00, Rev09, DCO# 21-230
First Release: 11-Dec-2014
Last Update: 07-Oct-2021
Pos.
Part Name
Article #
1% Accuracy
Flow Range
Fitting
Connector
Note
1a
LFS-03SU-Z
LFS-03SU-Z-G25 1
LFS-03SU-Z-SC1
LFS-03SU-Z-SC1-G25 1
100-30375
100-30399
100-30418
100-30419
35 –800 ml/min
6 –800 ml/min
Triclamp 3/8”
Circular Hirose
type with IP67.
--
1b
LFS-06SU-Z
LFS-06SU-Z-G25 1
LFS-06SU-Z-SC1
LFS-06SU-Z-SC1-G25 1
100-30377
100-30400
100-30394
100-30406
1.7 –8 l/min
0.075 –8 l/min
1c
LFS-10SU-Z
LFS-10SU-Z-G25 1
LFS-10SU-Z-SC1
LFS-10SU-Z-SC1-G25 1
100-30397
100-30405
100-30408
100-30416
4.7 –20 l/min
0.75 –20 l/min
Triclamp 1/2”
1d
LFS-15SU-Z
LFS-15SU-Z-G25 1
LFS-15SU-Z-SC1
LFS-15SU-Z-SC1-G25 1
100-30412
100-30111
100-30431
100-30432
10.6 –50 l/min
2 –50 l/min
Triclamp 1”
1e
LFS-20SU.1-Z
LFS-20SU.1-Z-G25 1
LFS-20SU-Z-SC1
LFS-20SU-Z-SC1-G25 1
100-30483
100-30484
100-30464
100-30465
18.8 –80 l/min
3.2 –80 l/min
Triclamp 1”
Firmware requirements for converters:
LFC-1C-PC -> Rev24 or higher
LFC-6CIO-PC -> Rev07 or higher
Table 1: Standard flow sensor configurations
Note 1: Gamma irradiated with dosage > 25 kGy.
Pos.
Part Name
Part #
Description
Interfaces
2
LFC-1C-PC
100-30374
Single Channel
Converter
Analog Output (4 –20 mA), 2x Digital Output, 1x Digital Input,
RS485 (MODBUS) protocol
Note: EMI ferrite (9) for flow sensor cable included in converter package.
3
(A+B)
LFC-6CIO-PC
100-30446
6-Channel Converter
with I/O Interfaces
(Digital I/O connector 3a and analog
output connector 3b included)
RS485 (MODBUS) protocol
6 analog outputs (4 –20 mA), 6 digital inputs, 6 digital outputs
Order Bus Conn. (8a) and Termination Box (8b) as separate article.
Note 1: EMI ferrite (9) for bus/supply connection to be ordered as separate article.
When stacking multiple converters same ferrite is needed on every sensor cable.
4
LFC-1C-PC-SK
100-91072
Converter Starter Kit
Flow converter LFC-1C-PC (A) with Ferrite (B)
AC/DC desktop supply (C) AC mains cables and world adaptor set (D)
sensor cable LFI-C.1-30 (E), converter connection cable LFI-D.1 (F)
RS485 to USB cable YN-485I-TR (G) and configuration software (H)..
Table 2: LEVIFLOW®converters
Pos.
Part Name
Part #
Features
Special Feature / Description
5a
LFI-C.1-10
LFI-C.1-30
LFI-C.1-60
190-10307
190-10308
190-10309
Cable length: 1 m, PVC
Cable length: 3 m, PVC
Cable length: 6 m, PVC
Interconnect cable for connection between sensor and converter.
5b
LFE-C.2-10
LFE-C.2-30
LFE-C.2-60
190-10310
190-10311
190-10312
Cable length: 1 m, PVC
Cable length: 3 m, PVC
Cable length: 6 m, PVC
Extension cable with wall-mountable connector for cabinet mounting.
Delivered with protective dust cap on wall-mountable connector side.
6
YN-485I-TR, USB to
RS485 Adaptor-TR
Isolated
100-30392
Structure/Design
USB connector (A) with termination resistor and cable with connector
pair (B and C) for external RS485 wire connection. Magnetically
isolated. Cable length is 2m. Included is USB space saver cable (D).
Purpose
Communication over fieldbus of converter with PC
7a
7b
7c
7d
Mounting Bracket LMK-1.2
Mounting Bracket LMK-2.2
Mounting Bracket LMK-3.2
Mounting Bracket LMK-4.2
100-91478
100-91479
100-91480
100-91481
Sensor compatibility
For LFS-03SU and LFS-06SU.
For LFS-10SU.
For LFS-15SU
For LFS-20SU.
Material / Sensor Fixation
Anodized Aluminum / Locking pin concept
8a
Connector Box
for LFC-6CIO-PC
100-30447
COMBICON connector
For wiring RS485 and supply of stacks of LFC-6CIO-PC converter.
8b
Termination Box
for LFC-6C
100-30317
--
For termination of RS485 bus of LFC-6CIO-PC.
9
LeviFlow Splitting Ferrite
100-30353
EMI filtering of DC supply
For LFC-6CIO-PC supply needed.
On sensor cables needed in case of stacking multiple converters.
Table 3: Accessories

User Manual for LEVIFLOW®LFS-SU Flowmeters
www.levitronix.com
PL-4509-00, Rev09, DCO# 21-230
6
2.2 Standard System Configurations
2.2.1 Single Channel System Configuration with LFC-1C-PC
Figure 4: Standard flowmeter system configuration
2.2.2 Multi-Channel Configuration with LFC-6CIO-PC
Figure 5: Standard flowmeter configuration with LFC-6CIO-PC converter
Single-Channel Converter LFC-1C-PC
4-Digit Display
Zero Adjustment
Adress Setting for RS485
Piezo Transducers
In-/Output Electrical Interface
Power Supply: 24 VDC
Analog and
Digital Outputs
- 1x Analog Output
- 2x Digital Outputs
- 1x Digital Input
Digital
Signal Processor
DSP
Adaptor/Extension Cable
Wallmountable connector
for cabinet mounting
Interconnect Cable
Various lengths.
Direct connection possible.
RS485 (MODBUS)
- Configuration with PC Software
- Data Logging
- Fieldbus Array of Multiple Sensors
LEVIFLOW® Single-Use Sensor LFS-xxSU
Flow Out
Flow In
Connector
Box
EMI Ferrite
LEVIFLOW® Converter LFC-6CIO-PC
(6-Channel with I/O Signals)
4-Digit Display
Zero Adjustment
Address Setting for RS485
Piezo Transducers In-/Output
Signal/Power Bus Connector
Power Supply: 24 VDC
RS485 (MODBUS)
- Configuration with PC Software
- Data Reading
Digital
Signal Processor
DSP
Analog Output
Connector
Digital I/O
Connector
Analog Outputs:
6 Channels
Digital Outputs:
6 Channels
Digital Inputs:
6 Channels
EMI
Ferrite
Adaptor/Extension Cable
Wallmountable connector
for cabinet mounting
Interconnect Cable
Various lengths.
Direct connection possible.
Single-Use Sensor LFS-xxSU
Single-Use Sensor LFS-xxSU
2
1
5b
5a
6
9
1
5a
5b
3
9

User Manual for LEVIFLOW®LFS-SU Flowmeters
www.levitronix.com
PL-4509-00, Rev09, DCO# 21-230
7
2.3 Specifications of Converter
2.3.1 Specifications of Single-Channel Converter LFC-1C-PC
Characteristics
Description or Values
Power Supply Voltage / Current / Inrush Current
24 VDC ± 10% / 150 mA / Peak of 3.8 A within 210 µs
Ambient Temp / Humidity Range
0 –40 °C (32 –122 °F) / 30 - 85% R.H. (no condensation)
Enclosure Classification and Material
IP-20 (indoor use), ABS
Interfaces
(see Figure 9 for detailed PIN designation and electrical
specification)
- RS485 -> MODBUS protocol -> max. array of 99 channels
- 1x Analog Output: 4 –20mA (0 –20mA configurable)
- 2x Digital Outputs: Flow Alarm, Measurement Error, Volume Counter Pulse, Volume Counter
Alarm, Flow as Frequency or Bubble Detection, Custom Output (default: normally open)
- 1x Digital Input: Volume Counter Reset or Zero Adjust
- 4 Digit display (flow rate, volume counter, error codes), re-zero button
- Address potentiometers for RS485 address setting
Standard Configuration Parameters 1
(Available and configurable with RS485/USB converter and
configuration software)
- Viscosity
- Low Cutoff
- Dampening time (filter)
- Full scale setting
- Linearization (15 points)
- Alarm Outputs (High and Low Alarm)
- Volume Counter and Volume Counter Alarm Settings
Weight / Dimensions / Mounting
130 g / 123 x 75 x 17.5 mm / DIN rail
Duration for Activation of Manual and Digital Zeroing
3 sec
Duration of Zeroing Procedure
LFC-1C-PC: normal 26 sec , maximum 60 sec
Duration of Measurement Ready after Power-On
Warm-Up Time for Full Performance Measurements
10 sec.
30 min.
Table 4: Specifications for converters LFC-1C-PC
Note 1: Other parameters available and described in the LevitronixService Software manual.
2.3.2 Specifications of Multi-Channel Converter LFC-6CIO-PC
Characteristics
6-Channel Converter LFC-6CIO-PC
Power Supply Voltage / Current / Inrush Current
Ambient Temp / Humidity Range
24 VDC ± 10% / 270 mA / Inrush Peak 4.9 A within 180 µs
0 –50 °C (32 –122 °F) / 30 - 85% R.H. (no condensation)
Enclosure Classification and Material
IP-20 (indoor use), ABS
Interfaces
(see Table 9 for LFC-6C and Table 9/Table 10/Table 11 for
LFC-6CIO for detailed PIN designation and electrical
specification)
- RS485 -> MODBUS protocol -> max. array of 99 ch.
- 4 Digit display (flow rate, volume counter, error codes), re-zero button
- Address potentiometers for RS485 address setting
- 6x Analog Outputs: 4 –20mA (0 –20mA configurable)
- 6x Digital Outputs: Flow Alarm, Measurement Error, Volume Counter Pulse, Volume Counter
Alarm, Flow as Frequency or Bubble Detection, Custom Output (default: normally open)
- 6x Digital Input: Volume Counter Reset or Zero Adjust
Configuration Parameters 1
(Available and configurable with RS485/USB converter and
service software)
- Viscosity
- Low Cutoff
- Dampening constant (filter)
- Full scale setting
- Linearization (15 points)
- Alarm Outputs (High and Low Alarm)
- Volume Counter and Volume Counter Alarm Settings
Weight / Dimensions / Mounting
215 g / 140 x 77.3 x 20.5 mm / DIN rail
Duration for Digital and Manual Zeroing
Duration of Measurement Ready after Power-On
Duration of activation: 3 sec Duration of procedure: normal 26 sec, maximum 60 sec.
Measurement ready after power-on: 10 sec. Warm-up for full performance: 30 min.
Table 5: Specifications for multi-channel converter LFC-6CIO-PC
Note 1: Other parameters available and described in the LevitronixService Software manual.
Note: Due to the reduced flow sampling rate per channel, the multi-channel converter LFC-6CIO-PC may be less suitable
for highly dynamic flow measurements in the lower flow range (like for example for flows with sharp pulses caused by roller
pumps).

User Manual for LEVIFLOW®LFS-SU Flowmeters
www.levitronix.com
PL-4509-00, Rev09, DCO# 21-230
8
2.3.3 Overview of Parameter Configuration
Table 6 shows the standard (“Default”) and possible parameter configurations of the flowmeters. This user
manual is dealing with the standard configuration. For setting up other configurations the Levitronix®Service
Software is needed. Consult the “Service Software User Manual” (see reference on title page of this manual)
for more detailed description.
Block
Parameter
Option/Range
Default
Note
Basic
Sensor size
LFS-xxSU
xx = 03, 06, 20
xx = 03, 06, 10, 15 or 20
(accord. Sensor size)
--
Full scale
0.01 –100 L/min
(accord. Sensor size)
Default Values:
LFS-03SU = 0.8 L/min, LFS-06SU = 8 L/min
LFS-10SU = 20 L/min, LFS-15SU = 50 L/min
LFS-20SU = 80 L/min
Damping time
0 –25 s
2 s
Low-pass filter with
T
fdB  =
 21
3
Fast Dynamic Enable
Off or On
Off
“On” for more dynamic flow readings (see Section 4.4)
Low cutoff
0.0 –25.0 %
2 %
Flow cut to 0 below this percentage of full-scale
If cutoff 0% is chosen, negative flow becomes visible
Kinematic Viscosity
0.00 –99.99 cSt
1 cSt
Kinematic Visc. = Dynamic Visc. / Density
Display Settings
Displayed Parameter
Flow Value in L/min
Flow Value in mL/min
Volume Counter Value
Flow Value in L/min
Parameter shown in converter display
Measurement Resolution
0 digits (#.)
1 digits (#.#)
2 digits (#.##)
3 digits (#.###)
3 digits (#.###)
Analog output
settings
Analog output setting
4 –20 mA or
0 –20 mA
4 –20 mA
--
Digital input
settings
Digital input
Volume counter reset
Zero adjust
Set Volume Counter to zero
Zero adjust
Automates zeroing, when liquid type changes
Digital output
settings
Digital output 1
Flow alarm High
Flow alarm Low
Vol. counter alarm H
Vol. counter alarm HH
Vol. counter Pulse
Measurement Error
Flow as Frequency
Bubble detect
Custom Output
Flow alarm High
- Upper flow limit detection
- Lower flow limit detection
- Flow volume detection first value (one-time)
- Flow volume detection second value
- Pulse per volume
- Error signal (empty sensor etc.)
- Flow as Frequency output (100% of full-scale = 1 kHz)
- Bubble detected signal
- Bits of equipment status can be OR-ed on the output
Digital output 2
Flow alarm Low
Flow alarm
Hysteresis (Flow alarm)
0 –20 %
0 %
Can be used to get tolerance to noise.
Alarm high
0 –125 %
105 %
Alarm setting In percentage of full-scale.
Contact type
N.O. = normally open
N.C. = normally closed
N.O. = norm. open
For digital outputs of converter.
Alarm low
-10 –125 %
-5 %
Alarm setting In percentage of full-scale.
Contact type
N.O. = normally open
N.C. = normally closed
N.O. = norm. open
For digital outputs of converter.
Volume counter
settings
Volume counter enable
(activation box)
activated, not activated
not activated
These are settings for volume detection (integration of
flow).
Has to be active for the options “ Vol. Counter Alarm H”,
“Vol. Counter Alarm HH” and “Vol. Counter Pulse”.
Volume counter base unit
1 mL, 1 L, 1 m3
1 mL
Multiplier factor
0.01, 0.1, 10, 100, 1000
0.1
Volume counter pulse length
0.5, 50, 100ms
0.5 ms
Volume counter alarm enable
(activation box)
activated, not activated
not active
-> Settings for one-time volume detection.
-> Volume = “Volume unit” x “Multiplier factor” x “Vol.
Counter Alarm H“ value”
-> Has to be active for the options “Vol. Counter Alarm
H”, “Vol. Counter Alarm HH”.
Value
(Volume counter alarm H)
0 –999999
--
Contact type (H)
N.O. = normally open
N.C. = normally closed
N.O. = norm. open
Value
(Volume counter alarm HH)
0 –999999
--
Contact type (HH)
N.O. = normally open
N.C. = normally closed
N.O. = norm. open
Measurement
Error Settings
Instant Measurement Error
Ignore Time
0-99 s
10s
During this time instant measurement errors are ignored.
If an instant measurement error stays active for longer
time than this time, measurement error arises.
Flow Level on Measurement
Error
0%, -25, 125%
Hold
0 %
Signal level of analog output and flow, when
measurement error arises
Bubble Detection
Settings
Bubble Detect Hold Time
0 –99 s
0 s
For bubble or particle detection in the process
Table 6: Overview of standard parameters
Note 1: Other parameters available and described in the LevitronixService Software manual.
Note 2: Parameters can be configured with the LevitronixService Software.

User Manual for LEVIFLOW®LFS-SU Flowmeters
www.levitronix.com
PL-4509-00, Rev09, DCO# 21-230
9
2.4 Specifications of Single-Use Sensors
2.4.1 General Specifications
Characteristics
LFS-03SU
LFS-03SU-SC1
LFS-06SU
LFS-06SU-SC1
LFS-10SU
LFS-10SU-SC1
LFS-15SU
LFS-15SU-SC1
LFS-20SU
LFS-20SU-SC1
Flow Range [l/min]
0 –0.8 l/min
0 –8 l/min
0 –20 l/min
0 –50 l/min
0 –80 l/min
ID of Measurement Path
2.5 mm
6 mm
10 mm
15 mm
20 mm
Accuracy of Reading
Note: Repeatability < Accuracy/2
LFS-03:
>35 ml/min: ±1 %
<35 ml/min:
LFS-03-SC1:
>6 ml/min: ±1 %
<6 ml/min: ±0.06 ml/min
LFS-06:
>1.7 l/min: ±1 %
<1.7 l/min: ±17 ml/min
LFS-06-SC1:
>0.075 l/min: ±1 %
<0.075 l/min: ±0.8 ml/min
LFS-10SU:
>4.7 l/min: ±1 %
<4.7 l/min: ±47 ml/min
LFS-10SU-SC1:
> 0.75 l/min: ±1 %
< 0.75 l/min: ±7.5 ml/min
LFS-15SU:
>10.6 l/min: ±1 %
<10.6 l/min: ±106 ml/min
LFS-15SU-SC1:
> 2 l/min: ±1 %
< 2 l/min: ±20 ml/min
LFS-20SU:
>18.8 l/min: ±1 %
<18.8 l/min: ±188 ml/min
LFS-20SU-SC1:
> 3.2 l/min: ±1 %
< 3.2 l/min: ±32 ml/min
Weight
Wetted Surface Area
Wetted Volume
42 g
29.5 cm2
4 ml
43 g
32.2 cm2
4.8 ml
61 g
53.2 cm2
12.3 ml
96 g
141.2 cm2
60.7 ml
125 g
173.5 cm2
125 ml
Maximum Fluid Pressure
5 bar
5 bar
5 bar
5 bar
5 bar
Pressure Drop Coefficient C
 P = C x Q2 , (for water), Q = Flow [l/min],
 P = Press. Drop [kPa = 10mbar]
16.8 at 20°C
0.880 at 20°C
0.0750 at 20°C
0.0101 at 20°C
0.00350 at 20°C
Fluid Temperature / Ambient Temp.
2–60 oC (35.6–140 oF) / 0–40 oC (32-104 oF)
Kinematic Viscosity / Sound Speed
0.3 –40 mm2/s (0.3 –40 cSt) / 1000 –2200 m/s
IP Classification
IP-65 (for connected sensor)
Wet Material / Sterilization Methods
Polypropylene (FDA, USP VI, ADI free) / Gamma robust for up to 40 kGy
Electrical Connector
Circular type (IP-67), lock-release mounting
Cables
Various extension cables available.
Table 7: Specifications of single-use flow sensors (all data based on calibration with water at 20°C)
Figure 6: Accuracy and repeatability of reading for LFS-03SU single-use sensor
0%
1%
2%
3%
4%
5%
6%
7%
8%
9%
10%
110 100 1000
[mlpm]
Accuracy of Reading
Repeatability of Reading
Full Scale Change Line
Full Scale = 35 mlpm
Full Scale = 800 mlpm

User Manual for LEVIFLOW®LFS-SU Flowmeters
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PL-4509-00, Rev09, DCO# 21-230
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2.5 Basic Dimensions of Main Components
2.5.1 Dimensions of Sensors
Figure 7: Dimensions of LFS-03SU and LFS-06SU flow sensors
Sensor
Type
Triclamp
Fitting Size
(ASME BPE 2009)
Dimensions in [mm]
a
b
c
D
d
e
f
g
h
L
LFS-10SU-Z
1/2"
138
80
Ø 12.7 (= 1/2”)
Ø 25
Ø 9.4
44.4
18.6
24
25
110
LFS-15SU-Z
1”
164.8
100
Ø 25.4 (= 1”)
Ø 50.5
Ø 22.2
79.4
23
26
30
160
LFS-20SU-Z
1”
231.2
161.2
Ø 25.4 (= 1”)
Ø 50.5
Ø 22.2
82.5
28
34
35
160
Figure 8: Dimensions of LFS-10SU, LFS-15SU and LFS-20SU flow sensors

User Manual for LEVIFLOW®LFS-SU Flowmeters
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2.5.2 Dimensions of Converters
Figure 9: Dimensions and layout of interfaces of converter LFC-1C-PC
Figure 10: Dimensions and stacking concept of multi-channel converter LFC-6CIO-PC
LFC-1C-PC
100-30374
Connector Box
(RS485 and Supply Bus)
EMI Ferrite
Termination
Box)

User Manual for LEVIFLOW®LFS-SU Flowmeters
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PL-4509-00, Rev09, DCO# 21-230
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2.5.3 Dimensions of Adaptor Cables
Figure 11: Dimensions of wall mountable extension cable LFE-C.2
(Can be used for electrical cabinet mounting. Minimum bending radius > 10 x cable radius)
Figure 12: Dimensions of interconnect cable LFI-C.1
(Minimum bending radius > 10 x cable radius)
Connector
Hirose Plug Male
HR30-6P-6P
Connector
Hirose Plug Female
HR30-6P-6S
Length = 3m
Mounting Wall
Sealing Gasket
Wall-mountable Adaptor
Converter
Connector
Mounting Panel Dimensions
Length = 1,3,6 m
Delivered with protective
dust cap on connector)

User Manual for LEVIFLOW®LFS-SU Flowmeters
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PL-4509-00, Rev09, DCO# 21-230
13
3 Installation
3.1 Installation of Converter LFC-1C-PC
3.1.1 Overview and Preparation
Figure 13: Single channel converter LFC-1C-PC
Pin #
Designation
Specification
Standard Configuration
Description
1
DC24V+
Voltage: 24 VDC ±10%
Current: 150 mA
Start Current: 4.4 A 2ms
--
Supply voltage
2
DC24V-
3
FG
Field Ground
See note in installation Section 3.1.2
Field ground
4
Analog Out +
4-20 mA or 0-20mA configurable
Load resistance < 600 
Flow reading with 4-20 mA. Standard full
scale flow range of each sensor model.
Flow rate signal.
Update rate is 10ms.
5
Analog Out -
6
Digital Out1 +
Max. rating 30 V DC, 20 mA
Open collector
Configurable as Alarm High, Alarm
Low, Measurement Error, Volume
Counter Pulse, Volume Counter
Alarm, Flow as Frequency, Bubble
Detect
- Parameter: Flow Alarm High
- Setting: 105% of full scale
- Normally opened
Contact is made, when 105% of full scale flow
rate is exceeded.
7
Digital Out2 +
- Parameter: Flow Alarm Low
- Setting: -5% of full scale
- Normally opened
Contact is made, when -5% of full scale flow rate
is reached.
8
COM
-
Common Digital Out ground.
9
Digital In +
No-voltage contact or transistor open
collector
Zero Adjustment
Is needed, if zero adjustment wants to be
triggered by PLC or when volume counter
function is used (integration of flow with volume
detection)
10
Digital In -
11
RS485 +
RS485
MODBUS Protocol
Digital communication in a sensor array.
or configuration with configuration SW.
12
RS485 -
Table 8: Standard configuration of interface connector (PLC and fieldbus)
Note 1: Min torque for connector screws is 0.5 Nm and max. is 0.6 Nm.
a
DIN Rail Mounting
Sensor Connector
Interface Connector (12 Pin)
b
Re-Zero Button
High ADRS
LOW ADRS
4 Digit Display
c
LFC-1C-PC

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PL-4509-00, Rev09, DCO# 21-230
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1. If communication over the RS485 bus is used, check the address settings of the potentiometers on
the front panel of the converter (see Figure 13c).
The total address is: “High ADRS” x 10 + “Low ADRS” x 1
2. The Levitronix®Service Software can be used to debug and configure the flowmeter over the RS485.
For communication with RS485 the MODBUS protocol can be requested at Levitronix

.
3.1.2 Instructions for Electrical Installation
1. Remove the DC power from the converter.
2. Remove the interface connector (see Figure 13a) from the converter.
3. Attach the necessary wires (AWG 14-26) according to the pin specifications in Table 8. Strip the
sheath approximately 3 mm from the wires end. Insert core into terminal to the end and tighten the
screw. Confirm that the wires are securely fixed by pulling it gently by hand.
4. Note: The Field Ground (FG) represents an additional ground potential, which is connected
internally to the signal ports of the converter via varistors. Depending on the specific setup, it might
be advantageous from an EMC perspective to connect the FG to the PE. However, in case the FG
is connected to PE the entire grounding concept of the field installation must be considered in order
to avoid stray and compensating currents triggered by electrical potential differences. If
compensating currents between PE and Ground may occur, the FG should not be connected.
5. For usage of a fuse at the power input (24 VDC) a 200 mA slow-blow type is recommended. The
peak current after power on of the converter (as specified in Table 4) shall be considered, when
choosing the fuse type and the AC/DC power supply.
6. Mount the interface connector to the converter and tighten the 2 connector screws.
7. To attach the sensor to the converter extension cables according to Table 3 can be used. To
increase robustness against disturbance from other devices or to reduce cross-talking between
multiple flowmeters, the converter comes delivered with an EMI ferrite, which shall be attached to
the sensor cable near to the converter (see Figure 14):
Figure 14: Assembly of EMI ferrite
8. Before powering on check again all wiring connections. Confirm that the terminals are securely
fastened and that there is no possibility of short circuit.

User Manual for LEVIFLOW®LFS-SU Flowmeters
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PL-4509-00, Rev09, DCO# 21-230
15
3.1.3 Instructions for Mechanical Installation
!
WARNING
Hazardous voltage may be present.
In order to avoiding fluid spills shorting voltages within the converter,
place the controller in a spill protected environment (for example
protected electronic cabinets).
If explosive flammable gases are present, place the converter in an
explosion-proof cabinet.
1. The converter shall be installed in a spill protected cabinet.
2. Assure that enough ventilation is provided in order to avoid exceeding the allowed ambient temperature and
humidity range: Temperature range: 0–40°C (32–104°F). Humidity range: 30-85% R.H. (no condensation).
3. A wall-mountable extension cable (see Table 3 and Figure 11) is provided in order to panel mount the sensor
cable on the cabinet wall. Make a whole to the cabinet wall according to Figure 11. The gasket ring delivered
with the extension cable can be used on the inside of the cabinet wall hence achieving an IP-67 sealing.
4. For connecting the sensor to the wall-mountable connector on the cabinet the interconnect cable according to
Table 3 and Figure 9 can be used.
Step 1: Align first the Snap-Pin side of the converter with
the DIN rail corner (picture a). If the rigid side is
aligned first (see picture b) than some of the DIN
rail parts of the converter housing might be
damaged.
Step 2: Press in the converter on the spring-pin side (see
picture c).
Step 3: Press in the fix side of the DIN rail recess of the
converter housing (see picture d)
Step 4: Relax the converter and let the snap-pin fix it
(see picture e).
Figure 15: Din Rail mounting steps for converter LFC-1C-PC
(For dis-mounting follow the steps in reverse order)
a
b
c
d
e
Snap Pin

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3.2 Installation of Converter LFC-6CIO-PC
3.2.1 Overview and Preparation
Figure 16: Multi-channel controller LFC-6CIO-PC
Fixation Bars
(un-locked)
Fixation Bars
(un-locked,
on both sides)
Connector Box
Termination
Box
EMI Ferrite
Zeroing
Botton
Channel Select 1-6
Address Setting for RS485:
High Adrs Low Address
4 Digit LED Display
Channel Indication 1-6
Bus Connector:
Pin #1
Pin #7
Sensor
Connectors:
Channel #6
Channel #1
Connector
Analog Output
Connector
Digital I/O
Connector
Analog Output
Connector
Digital I/O
Fixation Bars
(locked)
Fixation Bars
(locked on both sides)

User Manual for LEVIFLOW®LFS-SU Flowmeters
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PL-4509-00, Rev09, DCO# 21-230
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Pin #
Designation
Specification
1
NC
Not connected.
2
+24 V
24 VDC ± 10% / 270 mA / Inrush Peak 4.9 A within 180 µs
Note: Usage of twisted pairs in a shielded cable recommended.
3
0 V
4
FG
Field Ground. See note in installation Section 3.2.2
5
TRX+
RS485 with MODBUS protocol
Digital communication in a sensor array or configuration with service SW.
Note: Usage of twisted pair wires in a shielded cable recommended.
6
TRX-
7
TRXG
RS485 ground. If possible, to be connected to the ground of the RS485 master.
Note 1: Can be led in the same cable as TRX+/TRX-.
Table 9: Standard configuration of bus connector of LFC-6CIO-PC
Pin
Designation
Pin #
Designation
Specification
Standard Configuration
1
Analog Out CH1+
7
Analog Out CH4+
4 - 20 mA
(0 –20 mA configurable)
Load resistance < 600 Ohm
Flow reading with 4-20 mA. Standard full scale
flow range of each sensor model.
Flow rate signal.
Update rate is 5 ms per channel.
2
Analog Out CH1-
8
Analog Out CH4-
3
Analog Out CH2+
9
Analog Out CH5+
4
Analog Out CH2-
10
Analog Out CH5-
5
Analog Out CH3+
11
Analog Out CH6+
6
Analog Out CH3-
12
Analog Out CH6-
Table 10: Standard configuration of analog output connector for LFC-6CIO-PC
Note 1: Min torque for connector screws is 0.5 Nm and max. is 0.6 Nm.
Digital Outputs
Digital Inputs
Pin
Designation
Specification
Standard Configuration
Pin
Designation
Specification
Standard Configuration
1
Digital Out CH1+
Maximum rating:
30 VDC, 20 mA
(open collector)
- Parameter: Flow Alarm High
- Setting: 105% of full scale
- Normally opened
Contact is made, when 105% of
full scale flow rate is exceeded.
13
Digital In CH1+
No-voltage
contact or
transistor open
collector.
Zero Adjustment
Is needed, if zero adjustment
wants to be triggered by PLC or
when volume counter function is
used (integration of flow with
volume detection)
2
Digital Out CH1-
14
Digital In CH1-
3
Digital Out CH2+
15
Digital In CH2+
4
Digital Out CH2-
16
Digital In CH2-
5
Digital Out CH3+
17
Digital In CH3+
6
Digital Out CH3-
18
Digital In CH3-
7
Digital Out CH4+
19
Digital In CH4+
8
Digital Out CH4-
20
Digital In CH4-
9
Digital Out CH5+
21
Digital In CH5+
10
Digital Out CH5-
22
Digital In CH5-
11
Digital Out CH6+
23
Digital In CH6+
12
Digital Out CH6-
24
Digital In CH6-
Table 11: Standard configuration of digital in/output connector for LFC-6CIO-PC
Note 1: Min torque for connector screws is 0.5 Nm and max. is 0.6 Nm.
1. Check if all parts are delivered as shown in Figure 16. For every configuration (single converter
as shown in Figure 16aand multi converter array as in Figure 16b) a termination box (resistance
to terminate the RS485) and a connector box (wiring) is needed.
2. For communication with RS485 check the address settings of the potentiometers on the front
panel of the converter (see Figure 16d). The total address of the first channel is:
“High ADRS” x 10 + “Low ADRS” x 1
3. The Levitronix®Service Software can be used to debug and configure the flowmeter over the
RS485. For communication with RS485 the MODBUS protocol can be requested at Levitronix

.

User Manual for LEVIFLOW®LFS-SU Flowmeters
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PL-4509-00, Rev09, DCO# 21-230
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3.2.2 Instructions for Electrical Installation
1. Remove the DC power supply from the converter.
2. Remove the interface connector on the connector box (see Figure 16).
3. Attach the necessary wires (AWG 14-26) according to the pin specifications in Table 9, Table 10 or Table 11.
Strip the sheath approximately 3mm from the wires end. Insert the core into the connector up to the end and
tighten the screw. Confirm that the wires are securely fixed by pulling it by hand.
4. Note: The Field Ground (FG) represents an additional ground potential, which is connected internally to the
signal ports of the converter via varistors. Depending on the specific setup, it might be advantageous from an
EMC perspective to connect the FG to the PE (protective earth). However, in case the FG is connected to PE
the entire grounding concept of the field installation has to be considered in order to avoid stray and
compensating currents triggered by electrical potential differences. If compensating currents between PE and
Ground may occur, the FG should not be connected.
5. For usage of a fuse at the power input slow-blow type with a current rating of the converters (see Table 5) and
25% additional margin is recommended. Consider the inrush current of the converters (see Table 5) during
power start-up, when choosing the fuse type and the AC/DC power supply.
6. Mount the bus connector to the converter and tighten the 2 connector screws.
7. Before powering on, check again all wiring connections. Confirm that the terminals are securely fastened and
that there is no possibility of short circuit.
8. For proper EMI behavior of the LFC-6CIO-PC a ferrite is needed. This can be ordered according to Table 3
and assembled according to Figure 17. All bus wires shall be covered and the ferrite shall be placed at a
distance not longer than 15 cm from the connector box of the converter (see also Figure 10).
Figure 17: Mounting of EMI ferrite for bus wires of LFC-6CIO-PC (See Table 3 for order information)
9. If multiple LFC-6CIO-PC are stacked as illustrated in Figure 16, every sensor cable shall be configured with a
ferrite according to Figure 18 (see Table 3 for order information) in order to avoid cross talking of the sensor
signals. The ferrites shall be placed as near as possible to the beginning of the sensor cable (near to the
plastic connector).
Figure 18: EMI ferrites for sensor cables when stacking multiple LFC-6CIO-PC
LEVIFLOW® Converter LFC-6CIO-PC
(6-Channel with I/O Signals)
4-Digit Display
Zero Adjustment
Address Setting for RS485
Piezo Transducers In-/Output
Signal/Power Bus Connector
Power Supply: 24 VDC
RS485 (MODBUS)
- Configuration with PC Software
- Data Reading
Digital
Signal Processor
DSP
Analog Output
Connector
Digital I/O
Connector
Analog Outputs:
6 Channels
Digital Outputs:
6 Channels
Digital Inputs:
6 Channels
Adaptor/Extension Cable
Wallmountable connector
for cabinet mounting
Interconnect Cable
Various lengths.
Direct connection possible.
Single-Use Sensor LFS-xxSU
Single-Use Sensor LFS-xxSU
EMI Ferrite for Sensor Cables
For stacking of multiple
converters necessary.
EMI
Ferrite
EMI
Ferrite
EMI
Ferrite EMI
Ferrite
EMI
Ferrite
9
9

User Manual for LEVIFLOW®LFS-SU Flowmeters
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3.2.3 Instructions for Mechanical Installation
!
WARNING
Hazardous voltage may be present.
In order to avoiding fluid spills shorting voltages within the converter,
place it in a spill protected environment (for example protected electronic
cabinets).
If explosive flammable gases are present, place the converter in an
explosion-proof cabinet.
1. The converter shall be installed in a spill protected cabinet.
2. Assure that enough ventilation is provided in order to avoid exceeding the allowed ambient
temperature and humidity range specified in Table 5:
3. Bring the fixation bars in to un-lock position (see Figure 16).
4. If multiple converters are used (see Figure 16) stack them together.
5. Attach the connector box (see Figure 16)
6. Attach the termination box (Figure 16) and fix it by pushing the fixation bars of the termination
box (see Figure 16) to the inside.
7. Bring the fixation bars into the locked position (see Figure 16)
8. Mount the whole stack on a DIN rail following the same steps as described in Figure 15 for the
single channel converter LFC-1C-PC.

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PL-4509-00, Rev09, DCO# 21-230
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3.3 Installation of Sensors
3.3.1 Overview and Preparation
Figure 19: Single-use flow sensor models
1. Every sensor comes delivered with a calibration sheet. Check if the S/N on the calibration sheet
corresponds to the S/N on the type label of the sensor.
2. Please store the delivered calibration sheet or its data on a defined storage place in order to
be able to refer to it in case of problems.
3.3.2 Instructions for Electrical Installation
1. Attach one of the extension cables (see Table 3) coming from the converter to the sensor
connector.
2. When applying power, the controller needs about 10 seconds for a start-up procedure to be
ready. In order to get stable temperature and signals for converter and sensor 30 minutes shall
be waited after power-on.
3. After start-up a Zeroing is recommended. Assure that the sensor is filled completely with the
according fluid, free of bubbles and that zero flow is realized. Then push the “ZERO ADJ”
button on the converters for about 3 seconds. During adjustment “0ADJ” appears on the
converter display (about 2 seconds with blinking). The zero adjustment procedure will take
about 26-60 seconds.
LFS-06SU
0 –8 l/min
LFS-20SU
0 –80 l/min
Fixation
Hole
Fixation
Hole
LFS-03SU
0 –0.8 l/min
Connector
Box
LFS-10SU
0 –20 l/min
LFS-15SU
0 –50 l/min