LeviFlow LFS-03SU, LFS-06SU, LFS-10SU, LFS-20SU Data Sheet

LEVIFLOW® Ultrasonic Technology

Single-Use High Precision Flowmeters

LFS-SU Single-Use Flowmeters

LFS-03SU: 0 – 0.8 l/min LFS-06SU: 0 – 8 l/min

LFS-10SU: 0 – 20 l/min LFS-20SU: 0 – 80 l/min

Ultraclean Non-Invasive Flow Measurement

ULTRASONIC FLOW MEASUREMENT

Figure 1: Operating principle of ultrasonic single-use sensor

Measurement Path

INTRODUCTION

The LEVIFLOW® single-use flowmeters are designed for non-

invasive flow measurements of high purity fluids with flexible

tubing. Figure 1 illustrates the operating principle. Two piezo-

electric transducers, mounted in the sensor housing, generate

and receive an ultrasonic wave. The wave going in direction of

the flow (with-stream wave) is accelerated and the wave going

against 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 the

velocity of the fluid. The wet materials of the single-use sensors

fabricated from biocompatible (FDA, USP-VI, BSE/TSE and

Animal free) gamma sterilizable polypropylene (PP).

The standard configuration of the LEVIFLOW® single-use

flowmeters (Figure 3) consists of a flow sensor and a converter

with a digital signal processor (DSP) for processing the sensor

signals. Various signals (analog output, digital input/output) are

provided and can be configured with a PC software. A two wire

RS485 bus allows arrays of multiple flowmeters. In addition, the

sensor value is shown on a 4-digit display. For debugging, data

collection and configuration with a PC the LEVIFLOW®

Configuration Software is available at Levitronix® together with a

USB to RS485 adaptor (see Figure 3).

Figure 2: Single-use flowsensor

1

Flow Out

Flow In

Interconnect Cable

Various lengths.

Direct connection possible.

Adaptor/Extension Cable

Wallmountable connector

for cabinet mounting

Figure 3: System configuration for usage with LEVIFLOW®

configuration software

3a

2b

EMI Ferrite

Single-Channel Converter LFC-1C-PC

Digital

Signal Processor

DSP

Piezo Transducers

In-/Output

Other RS485
Devices

Electrical Interface

3b

RS485
(MODBUS)

BUS

Converter

4

RS232/RS485

or

USB/RS485

Analog and
Digital Outputs

- 1x Analog Output

- 2x Digital Outputs

- 1x Digital Input

RS232 or USB

Power Supply: 24 VDC

Configuration Software

Watertight
Connector
Box

2a

®

LEVIFLOW

SYSTEM BENEFITS

 High precision (1%) flow measurement

 No contamination due to non-invasive flow measurement

 No moving parts -> no particle generation

 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)

 Integrated and configurable totalizer function

APPLICATIONS

 High purity and high precision liquid processes

 Sterile non-invasive flow measurement in Pharmaceutical

manufacturing

 Biotech processes

 Flow control in combination with Levitronix



MagLev pump

systems

 Single-use disposable applications

SENSOR SPECIFICATIONS

Sensor Type

Characteristics

LFS-03SU

Flow Range [lpm] 0 – 0.8 0 – 8 0 – 20 0 – 80

Triclamp Fitting Size 3/8” (ID = 6.4 mm) 3/8” (ID = 6.4 mm) 1/2” (ID = 9.4 mm) 1” (ID = 22.2 mm)

Measurement Path ID in [mm] 2.5 6 10 20

Accuracy of Reading

Note: Repeatability < Accuracy/2

see Figure 4

Wetted Surface Area [cm2] 29.5 32.2 53.2 173.5

Wetted Surface Area [ml] 4 4.8 12.3 95.8

Weight [g] 42 43 61 125

Pressure Drop Coefficient C at 20°C

P = C x Q2 ,

16.8 0.88 0.075 0.0035

Q = Flow [lpm], P = Press. Drop [kPa]

Fluid Temperature Normal range: 10 – 60 °C ( 50 – 140 °F )

Ambient Temperature 0 – 40 °C (32 – 104 °F)

Maximum Fluid Pressure 0 – 0.5 MPa ( 0 – 5 bar, 0 – 72.5 psi)

Kinematic Viscosity 0.8 – 40 mm2/s (0.8 – 40 cSt)

Sound Speed 1000 – 2200 m/s

Wet Materials Polypropylene (FDA, USP VI, ADI free), Gamma robust for up to 40 kGy

Sensor Enclosure Classification IP-65 (for connected sensor)

Cable Jacket Material PVC

Cable Length Various extension cables available.

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

LFS-06SU
LFS-06SU-SC1

LFS-06SU:
> 1.7 l/min: ±1%
< 1.7 l/min: ±17 ml/min

LFS-06SU-SC1:
> 0.08 l/min: ±1%
< 0.08 l/min: 0.8 ml/min

LFS-10SU LFS-20SU

> 4.7 l/min: ±1%
< 4.7 l/min: ±47 ml/min

>18.8 l/min: ±1 %
<18.8 l/min: ±188 ml/min

10%

9%

8%

7%

6%

5%

4%

3%

2%

Table 1: Specifications of flow sensors (all data based on calibration with water at 20°C)

Full Scale = 35 mlpm

Full Scale = 800 mlpm

Accuracy of Reading

Repeatability of Reading

Full Scale Change Line

1%

0%

1101001000

[mlpm]

Figure 4: Accuracy and repeatability for single-use sensor LFS-03SU

A

SENSOR SPECIFICATIONS

Triclamp 3/8“

SME BPE 2009

Figure 5: Dimensions for LFS-03SU-Z and LFS-06SU-Z flow sensors

Sensor
Type

LFS-10SU-Z 1/2" 80 138 Ø 12.7 (= 1/2”) Ø 25 Ø 9.4 44.4 18.6 24 110

LFS-20SU-Z 1” 161.2 231.2 Ø 25.4 (= 1”) Ø 50.5 Ø 22.2 82.5 28 34 160

Triclamp
Fitting Size

(ASME BPE 2009)

Dimensions in [mm]

a b c D d e f g L

Figure 6: Dimensions for LFS-10SU-Z and LFS-20SU-Z flow sensors

C

-1C

-PC

l

CONVERTER AND CABLE SPECIFICATIONS

Characteristics Description or Values

Power Supply
Current / Inrush (Start-Up) Current

Ambient Temp
Humidity Range

Enclosure Classification and Material IP-20 (indoor use), ABS

Interfaces

(See Figure 7 for detailed PIN designation and electrical specification)

Configuration Parameters

(Available and configurable with RS485/USB converter and configuration software)

Weight 130 g

Dimensions 123 x 75 x 17.5 mm (see Figure 7 for details)

Mounting DIN rail

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

24 VDC ± 10%
150 mA / Peak of 3.8 A within 210 μs

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

- 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 (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

Viscosity, Low Cutoff, Dampening constant (filter)
Full scale setting, Linearization (15 points), Alarm Outputs (High and Low Alarm)
Volume Counter Settings

100-30374

LF

Figure 7: Dimensions and layout of interfaces of single channel converter LFC-1C-PC

Hex-Nut

Length = 1,3,6 m

Delivered with protective
dust cap on connector)

Sealing Gasket

M22 x 1mm

Mounting Panel Dimensions

Converter
Connector

Mounting Wall

Wall-mountable Adaptor

Figure 8: Dimensions of wall mountable extension cables LFE-C.2

ORDER INFORMATION

1b

1a

Pos. Part Name Article #

LFS-03SU-Z

1a

LFS-03SU-Z-G25 1

LFS-06SU-Z
LFS-06SU-Z-G25

1b

LFS-06SU-Z-SC1
LFS-06SU-Z-SC1-G25 1

LFS-10SU-Z

1c

LFS-10SU-Z-G25 1

LFS-20SU-Z

1d

LFS-20SU-Z-G25 1

1

100-30375
100-30399

100-30377
100-30400

100-30394
100-30406

100-30397
100-30405

100-30379
100-30404

1c

4a

1d

5a

Figure 9: LEVIFLOW® flowmeter components

1% Accuracy
Flow Range

35 – 800 mlpm

1.7 – 8 l/min

0.08 – 8 l/min

4.7 – 20 l/min Triclamp 1/2”

18.8 – 80 l/min Triclamp 1”

Fitting Connector Note

Triclamp 3/8”

5b

Circular Hirose
type with IP67.

4b

5c

2b

2a

--

Table 3: 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

(a+b)

Analog Output (4 – 20 mA), 2x Digital Output, 1x Digital Input,
RS485 (MODBUS) protocol

Note: EMI ferrite (2b) for flow sensor cable included in converter package.

3 LFC-1C-PC-SK 100-91072 Converter Starter Kit Includes converter, AC/DC supply, plug-and-play cabling, configuration software.

Table 4: LEVIFLOW® converter

Pos. Part Name Part # Features Special Feature / Description

LFI-C.1-10

4a

LFI-C.1-30
LFI-C.1-60

LFE-C.2-10

4b

LFE-C.2-30
LFE-C.2-60

YN-485I-TR, USB to RS485

5

Adaptor-TR Isolated

190-10307
190-10308
190-10309

190-10310
190-10311
190-10312

100-30392

Cable length: 1 m, PVC
Cable length: 3 m, PVC
Cable length: 6 m, PVC

Cable length: 1 m, PVC
Cable length: 3 m, PVC
Cable length: 6 m, PVC

Structure/Design

Purpose

Interconnect cable for connection between sensor and converter.

Extension cable with wall-mountable connector for cabinet mounting.
Delivered with protective dust cap on wall-mountable connector side.

USB connector (5a) with termination resistor and cable with connector pair (5b and
5c) for external RS485 wire connection. Magnetically isolated. Cable length is 2m.

Communication over fieldbus of converter with PC

Table 5: Accessories

Free Notes Page

T

LEVITRONIX® THE COMPANY

Levitronix

bearingless motor technology to the Semiconductor, Medical and Life Science markets. The company is ISO 9001 certified. Production
and quality control facilities are located in Switzerland. In addition, Levitronix

LEVIFLOW



is the world-wide leader in magnetically levitated bearingless motor technology. Levitronix was the first company to introduce



®

flowmeter series to the market.

is committed to bring other highly innovative products like the

Headquarter and
European Contact

Levitronix GmbH
Technoparkstr. 1
CH-8005 Zurich
Switzerland

Phone: [phone]
Fax: [phone]
E-Mail: [e-mail]

US Contact Japan Contact

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

Phone: [phone]
Fax: [phone]
E-Mail: [e-mail]

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

Phone: [phone]
Fax: [phone]
E-Mail: [e-mail]

aiwan Contact

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

Phone: [phone]
Fax: [phone]
E-Mail: [e-mail]

First Release: 18-Jul-14 Last Update: 28-Dec-16 PL-4508-00, Rev02, DCO# 16-181