LEVIFLOW® Ultrasonic Technology
Clamp-On Flowmeter D-Series for Flexible Tubing

LFSC-D Clamp-On Flowmeters
LFSC-05D: 1/8x1/4”, 1 l/min

LFSC-08D: 1/4x3/8”, 4 l/min

LFSC-12D: 3/8x9/16”, 20 l/min

LFSC-22D: 3/4x1”, 80 l/min

LFSC-30D: 1x13/8”, 160 l/min

Ultraclean Non-Invasive Flow Measurement

INTRODUCTIONINTRODUCTION
The LEVIFLOW® clamp-on flowmeters are designed for noninvasive flow measurements of high purity fluids with flexible
tubing. Figure 1 illustrates the operating principle. Two piezoelectric transducers, mounted in the sensor housing, generate
and receive an ultrasonic wave. The wave going in direction ofthe flow (with-stream wave) is accelerated and the wave goingagainst the flow direction (against-stream wave) is slowed
down. The two waves are processed by a signal converter. The
difference of the transit time of both waves is proportional to thevelocity of the fluid.
Figure 1:

Operating principle of ultrasonic clamp-on flow sensor (D-series)

The standard configuration of the LEVIFLOW® clamp-on
flowmeters (Figure 2) consists of a flow sensor and a converterwith a digital signal processor (DSP) for processing the sensorsignals. The clamp on flowmeters can measure a flow up toFlow In
Single-Channel Converter LFC-1C-PC

2®

LEVIFLOW
Clamp-On
Flowsensors
LFSC-xxD Series

DigitalSignal Processor
DSP

Piezo Transducers
In-/Output

7160 l/min. Various signals (analog output, digital input/output)

4-Digit Display
Zero Adjustment
Adress Setting for RS485

1

are provided and can be configured with a PC software. A twowire RS485 bus allows arrays of multiple flowmeters. In
addition, the sensor value is shown on a 4-digit display. For

Electrical Interface

debugging, data collection and configuration with a PC theEMI
FerritePower Supply: 24 VDC

Flow Out

Levitronix® Service Software is available at Levitronix® together

Analog andDigital Outputs- 1x Analog Output- 2x Digital Outputs- 1x Digital Input

5aInterconnect Cable
Various lengths.
Direct connection possible.

5b

RS485
(MODBUS)

Other RS485
Devices

Adaptor/Extension Cable
Wallmountable connector
for cabinet mounting

with a USB to RS485 adaptor (see Figure 3).
Levitronix®
Service Software

BUSConverter

SYSTEM BENEFITSRS232 or USB

8Figure 2:

RS232/RS485
orUSB/RS485

Single channel system configuration for usage with Levitronix®
Service Software (see order info. for article description)

5a1

Interconnect Cable
Various lengths.
Direct connection possible.

RS485 (MODBUS)- Configuration with PC Software- Data Reading

5bEMI
Ferrite

No contamination due to non-invasive flow measurementNo moving parts -> no particle generation

Low disposable cost (tubing cost only) with reusable sensor

Improved bubble robustness due to DSP technology

Flow control together with Levitronix MagLev PumpsEasy integration into OEM equipment

Easy configurable flow sensor parameters (PC software)

Low pressure lossIntegrated and configurable totalizer function

7Power Supply: 24 VDC

Adaptor/Extension Cable
Wallmountable connector
for cabinet mounting®

Digital Outputs:
6 Channels
Digital Inputs:
6 Channels

3
LEVIFLOW ®
Clamp-On
Flowsensor
LFSC-xxD

Figure 3:

APPLICATIONSLEVIFLOW Converter LFC-6CIO-PC(6-Channel with I/O Signals)

4-Digit Display
Zero Adjustment
Address Setting for RS485

System configuration for usage with Levitronix® ServiceSoftware (see order info. for article description)

Digital I/O
Connector

Piezo Transducers In-/Output

Analog Outputs:
6 Channels
DigitalSignal Processor
DSP

Analog OutputConnector

Signal/Power Bus Connector

LEVIFLOW ®
Clamp-On
Flowsensor
LFSC-xxD

High purity liquid processes

Sterile non-invasive flow measurement in PharmaceuticalmanufacturingBiotech processesFlow control in combination with Levitronix MagLev pumpsystems

Single-use disposable applications

SENSOR SPECIFICATIONS
Characteristics

LFSC-05D

LFSC-08D

LFSC-12D

LFSC-22D

LFSC-30D

Flow Range [l/min]

0 – 1 l/min0 – 4 l/min

0 – 20 l/min

0 – 80 l/min

0 – 160 l/min

Accuracy of Reading±5 % for > 25% of FS±12.5 ml/min for < 25% of FS±3 % for > 15% of FS±18 ml/min for < 15% of FS±3 % for > 15% of FS±90 ml/min for < 15% of FS±3 % for > 15% of FS±360 ml/min for < 15% of FS±3 % for > 15% of FS±720 ml/min for < 15% of FS

Weight

212 g

211 g

208 g

327 g

502 g

Maximum Fluid Pressure

6.5 bar

6.5 bar

6.5 bar

4 bar

3 bar

4.16 at 20°C
3.77 at 37°C

0.0743 at 20°C
0.0675 at 37°C

0.00725 at 20°C
0.00658 at 37°C

1.49 10-4 at 20°C
1.34 10-4 at 37°C

3.9 10-5 at 20°C
3.5 10-5 at 37°C

ID

1/8” = 3.2 mm

1/4” = 6.4 mm

3/8” = 9.5mm

3/4” = 19.05 mm

1” = 25.4 mm

OD

1/4” = 6.4 mm

3/8” = 9.6 mm

9/16” = 14.3mm

1” = 25.4 mm

13/8” = 34.9 mm

Wall thickness

1/16” = 1.6 mm

1/16” = 1.6 mm

3/32” = 2.4 mm

1/8” = 3.2 mm

3/16” = 4.8 mm(Tubing variation not included. For fully
developed flow profiles.)(max. pressure of tube might limit this value)

Pressure Drop Coefficient C2

P = C x Q2 , (for water), Q = Flow [l/min]P = Press. Drop [kPa = 10 mbar]

UsableFlexible Tubing
Dimensions® 1

Standard Tube MaterialSaint Gobain C-Flex

Fluid Temperature

Normal range: 10 – 60 oC ( 50 – 140 oF )(374, 072 and 082) and Liveo

Ambient Temperature0 – 40 oC (32 - 104 oF)

Kinematic Viscosity

0.3 – 10 mm2/s (0.3 – 10 cSt)

Sound Speed

1300 – 1700 m/s (others on request)

IP Classification

IP-65

Allowed Cleaning

Wiping with IPA or waterElectrical Connector

Circular type (IP-67), lock-release mounting

CablesVarious extension cables available.

TMPharma Silicone (Pharma 50, 65 and 80)

2Note: This is the measurable range.

Table 1: Specifications of flow sensors (all data based on calibration with water at 20 or 37 oC with zeroing after clamping)
1: C-Flex® is a registered trademark of Saint Gobain Performance Plastics, 2015. All rights reserved. 2: Pressure coefficient based on calculations and accounts for the clamp length only.
Note 2: LiveoTM Pharma is a trademark of DuPont de Nemours.

Type 1
Type 2Dimensions in [mm]Sensor TypeTypeABCDEFGH

LFSC-05D25.7

485467.2

44.5

M6 x 62035

LFSC-08D2848

54

67.2

44.5

M6 x 62035

LFSC-12D

1

1248

54

67.2

44.5

M6 x 62035

LFSC-22D

2225465

80.7

57.5

M8 x 102556

LFSC-30D

2

29.5

5485.5

102.1

79.8

M8 x 102530

Figure 4: Dimensions for LFSC-D clamp-on flow sensors

CONVERTER AND CABLE SPECIFICATIONS

CharacteristicsSingle Channel Converter Type LFC-1C-PC

Power Supply
Current / Inrush (Start-Up) Current

24 VDC ± 10%
150 mA / 3.8 A during < 210 µs

Ambient Temp
Humidity Range

0 – 40 °C (32 – 104 °F)
30 - 85% R.H. (no condensation)

Enclosure Classification and Material

IP-20 (indoor use), ABSInterfaces- 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 CounterAlarm, Flow as Frequency or Bubble Detection (default: normally open)- 1x Digital Input: Volume Counter Reset or Zero Adjust- 4 Digit display (flow rate, error codes), re-zero button- Address potentiometers for RS485 address setting(See Figure 5 for detailed PIN designation and electrical specification)

Configuration Parameters(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 Settings

Weight

130 gDimensions

123 x 75 x 17.5 mm (see Figure 5 for details)

Mounting

DIN rail
Table 2: Specification of converter LFC-1C-PC

100-30374
LFC-1C-P C

Figure 5: Dimensions and layout of interfaces of single channel converter LFC-1C-PC
Hex-Nut
M22 x 1mm

Length = 1,3,6 m

Sealing Gasket
Delivered with protective
dust cap on connector

Mounting Panel Dimensions
Converter
Connector

Figure 6: Dimensions of wall mountable extension cables LFE-C.2

Mounting Wall
Wall-mountable Adaptor

CONVERTER AND CABLE SPECIFICATIONS

Characteristics

6-Channel Converter Type LFC-6CIO-PC

Power Supply / Current / In-Rush (Start) Current24 VDC ± 10% / 270 mA / Peak 4.9 within 210 µs

Ambient Temp / Humidity Range

0 – 50 °C (32 – 122 °F) / 30 - 85% R.H. (no condensation)

Enclosure Classification and Material

IP-20 (indoor use), ABS- RS485 -> MODBUS protocol -> max. array of 99 ch.
- Stacking of max. 16 converters -> 5 ms DSP process/time per channel- 4 Digit display (flow rate, error codes), re-zero button- Address potentiometers for RS485 address setting

Interfaces- 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 (default: normally open)- 6x Digital Input: Volume Counter Reset or Zero Adjust
Configuration Parameters(Available and configurable with RS485/USB converter andservice software)

Weight / Dimensions / Mounting- 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

215 g / 140 x 77.3 x 20.5 mm / DIN rail
Table 3: Specifications for multi-channel converter LFC-6CIO-PC

Connector
Digital I/O

Termination Box(for RS485)

Connector
Analog Output
Bus Connector

Sensor Connector
Connector Box(RS485 and Supply Bus)DIN RailInterface

Display SelectStatus LED
Channel #1-6

4 Digit LED
Display

Address Setting
for RS485

Re-Zeroing
BottonFigure 7: Dimensions, mounting and stacking concept of LFC-6CIO-PC

EMI Ferrite

ORDER INFORMATION

Pos.

Part NameArticle #Tube: ID x OD

Flow Range
1 lpm
4 lpm

1a

LFSC-05D-001

100-30407

ID = 1/8”= 3.2 mm
OD = 1/4”= 6.4 mm

1b

LFSC-08D-001

100-30396

ID = 1/4”= 6.4 mm
OD = 3/8”= 9.6 mm

100-30390

ID = 3/8”=9.5 mm
OD = 9/16”=14.7 mm

20 lpm
80 lpm160 lpm

1c

LFSC-12D-007

1d

LFSC-22D-005

100-30391

ID = 3/4”=19.05 mm
OD = 1”=25.4 mm

1e

LFSC-30D-001

100-30414

ID = 1”=25.4 mm
OD = 13/8”=34.9 mm

Connector

Calibration Set

Note

CircularHirose

Water @ 20°C and 37°C

Default activated calibration set is
Silicone at 37°C water temperature.

Silicone and C-Flex®

Other parameter sets can be chosenwith Levitronix® Service Software.

Table 4: Standard flow sensor configurations (others on request)Pos.
2a(A+6)3(A+B)Part Name

Article #Description

Interfaces

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 (6) for flow sensor cable and signal connector (A) included in converter package.

LFC-6CIO-PC

100-30446

6-Channel Converterwith I/O Interfaces

RS485 (MODBUS) protocol
6 analog outputs (4 – 20 mA), 6 digital inputs, 6 digital outputs
Order Bus Conn. (6a) and Termination Box (6b) as separate article (see Table 6)(Digital I/O connector A and analog outputconnector B included)Note 1: EMI ferrite (6) for bus connector to be ordered as separate article (see Table 6). Whenstacking multiple converters EMI ferrite (6) is needed for every sensor cable (see manual for details).
Note 2: Firmware Ver08 or higher is needed to run with the LFSC-D family for flexible tubings.

4(A-H)

LFC-1C-PC-SK

Flow converter LFC-1C-PC (A) with Ferrite (B), AC/DC desktop supply (C) withinternational AC mains inserts, sensor cable LFI-C.1-30 (D), converter connection
cable LFI-D.1 (E), RS485/USB cable YN-485I-TR (F), USB stick with Levitronix
Service Software and product Literature (G).

Converter Starter Kit

100-91072

Table 5: LEVIFLOW® converter for clamp-on sensor

Pos.

Part Name

Article #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.

5bLFE-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.

6aConnector Boxfor LFC-6CIO-PC

100-30447

COMBICON connector

For wiring RS485 and supply of stacks of LFC-6CIO-PC converter.

6bTermination Box for LFC-6C100-30317--For termination of RS485 bus of LFC-6CIO-PC.

7

LeviFlow Splitting Ferrite

100-30353

EMI filtering of DC supply

For LFC-6CIO-PC supply needed.
On flow sensor cables needed in case of stacking of multiple converters.

8YN-485I-TR, USB to RS485
Adaptor-TR Isolated

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 a space saver cable (D).

PurposeCommunication over fieldbus of converter with PC.

100-30392

Table 6: Accessories

Pos.

Part Name

Part #Flow Range

9a

LFSC-05D-001+ LFC-1C-PC

100-91113

0 – 1 lpm

9b

LFSC-08D-001+ LFC-1C-PC

100-91076

0 – 4 lpm

9c

LFSC-12D-007+ LFC-1C-PC

100-91012

0 – 20 lpm

9d

LFSC-22D-005 + LFC-1C-PC

100-91013

0 – 80 lpm

9e

LFSC-30D-001 + LFC-1C-PC

100-91183

0 – 160 lpm

Calibration Set

Note

Water @ 20°C and 37°C

Extension and interconnect cables to be ordered as separate
article with specified length (see Table 6).

Silicone and C-Flex®

Default activated calibration set is Silicone at 37°C watertemperature.

Table 7: Standard flowmeter sets – flow sensor with converter

COMPONENTS

1b1c1a32A6bB

A

1d1e

76aFigure 8: LEVIFLOW® flowmeter components

B8CA
5a5bD

Figure 9: Accessories

AHFE

BCG
DFigure 10: Converter starter kit (see Table 2 Position 4) with components

LEVITRONIX® THE COMPANY

Levitronix is the world-wide leader in magnetically levitated bearingless motor technology. Levitronix was the first company to introduce
bearingless motor technology to the Semiconductor, Medical and Lifescience markets. The company is ISO 9001 certified. Production andquality control facilities are located in Switzerland. In addition, Levitronix is committed to bring other highly innovative products like theLEVIFLOW® flowmeter series to the market.

Headquarter andEuropean Contact

US Contact

Japan Contact

Taiwan Contact

Levitronix GmbH
Bändliweg 30
CH-8048 Zurich
Switzerland

Levitronix Technologies LLC
10 Speen Street, Suite 102
Framingham, Massachusetts 01701
USA

Levitronix Japan K.K.
Wing Eight 5floor, 4-16-4
Asakusabashi, Taito-kuTokyo, 111-0053 Japan

Levitronix Taiwan
5F, No. 251, Dong Sec. 1,Guangming 6th Rd., Chu Pei City,Hsin-Chu 302, Taiwan, R.O.C.

Phone:
E-Mail:Phone:
E-Mail:Phone:
E-Mail:Phone:
E-Mail:+41 44 974 4000
salesEurope@levitronix.com+1 508 861 3800
salesUS@levitronix.com+81 3 5823 4193
salesJapan@levitronix.com+886 3 657 6209
salesAsia@levitronix.com

This document and its content are the property of Levitronix® and shall not be reproduced, distributed, disclosed orused for manufacturing or sale of Levitronix ® products without the expressed written consent of Levitronix®.

First Release: 07-Jul-2014

Last Update: 26-Apr-2024

PL-4506-00, Rev08, DCO# 24-095