ConfidentialConfidential Electromagnetic Type Digital Flow Switch LFE Series Integrated display type...

ConfidentialConfidentialConfidentialConfidential

Electromagnetic Type Digital Flow SwitchLFE Series

Integrated display type

Separated type

Sensor Display


1. Purpose of development

For flow control of cooling water for moulding and welding guns and leakage control tip cooling water, the liquid which is measured by flow meter is mainly industrial water. Flow meter types such as float, impeller or Karman vortex are used, but they all have problems with clogging.

↓

(1) Small pressure loss

(2) No clogging

(3) Small flow meter for liquid

Require development


2. Features (1)

No obstacles in the fluid path. Compact and lightweight.

Smooth fluid path with no moving parts is resistant to clogging.

Light weight 340g ⇒ （ value for LFE1*3)


2 ． Features (2)

Low pressure loss (0.02MPa or less)　　　　　　　　　　　　　　　　　　　 (for L

FE1 and LFE2)

LFE1 LFE2 LFE3

Pre

ssu

re lo

ss (

MP

a)

0.04

0.03

0.02

0.01

0.00

Flow rate (L/min)

0 5 10 15 20

Pre

ssu

re lo

ss (

MP

a)

0.04

0.03

0.02

0.01

0.00

Flow rate (L/min)

0 20 40 60 80 100

Pre

ssu

re lo

ss (

MP

a)

0.04

0.03

0.02

0.01

0.00

Flow rate (L/min)

0 50 100 150 200


Backflow can be detected

2 ． Features (3)

Flow direction can be changed after installation

Normal flow.(Left --> Right)

Backflow(Right --> Left)

IN

IN

OUT

OUT

Normal flow.(Left --> Right)

Backflow(Right --> Left)

Backflow error displayed


3 colour, 2 display indication Example of lower screen (Upper screen is for insta

ntaneous flow rate)

Upper screen

Lower screen

　　　　 (Lower screen) Set value 　　 Accumulated 　 Peak/ bottom

　　 Line name

value value

2. Features (4)

Wide range (Wide rated flow range)

LFE1 ： 0.5 to 20 L/min LFE2 ： 2.5 to 100 L/min LFE3 ： 5 to 200 L/min

ConfidentialConfidentialConfidentialConfidential3. Applications

Flow control of cooling water for welding gun, leakage control of tip cooling water.

Flow control for cooling water for mold

Flow control for aqueous coolant

ConfidentialConfidentialConfidentialConfidential4. Specifications and Performance (1) Model LFE1 LFE2 LFE3

Applicable fluid Water or liquids which do not corrode the fluid contact materials.

Applicable electrical conductivity

5 　 μS/cm

Rated flow range 0.5 to 20.0 L/min 2.5 to 100.0 L/min 5 to 200 L/min

Display and settable value range

0.4 to 24.0 L/min 2.0 to 120.0 L/min 4 to 240 L/min

Min. setting unit 0.1 L/min 0.5 L/min 1 L/min

Accumulated flow range

99999999.9 L 999999999 L

Repeatability Display value: +/-2 ％ F.S. analog output: +/-1.5 ％ F.S.

Operating fluid temperature

0 to 85 oC (No freezing or condensation)

Ambient temperature 0 to 50 oC (No freezing or condensation)

Temperature characteristics

+/-5 %F.S. (25 oC reference)

Operating pressure range

0 to 1 MPa

Proof pressure 2 MPa

Integrated display type (1)


4 ． Specifications and Performance (2)

Model LFE1 LFE2 LFE3

Switch output NPN or PNP open collector Max. load current: 80mA, max. applied voltage: 28V

Analogue output

Voltage output

1 to 5V (Output impedance 1kΩ)

Current output

4 to 20 mA (Maximum load impedance 600Ω)

Response time Can be selected from 0.25 s, 0.5 s, 1s, 2s, and 5s. (63% response)

Display type 2 screen display Upper screen: 7seg 4 digits Red ／ Green 　 2 colors

Lower screen: 11seg 6 digits White

Operation LED Output 1, 2 orange

Power supply voltage 24V DC +/-10%

Current consumption 45 mA or less (Load current is not included)

Enclosure IP65

Compliance CE marking, RoHS

Materials of fluid contact parts

PPS 、 FKM 、 C37

Port size 3/8inch(10A) 1/2inch(15A) 3/4inch(20A) 1inch(25A)

Weight 340 g 400 g 520 g 680 g

Integrated display type (2)

ConfidentialConfidentialConfidentialConfidential4 ． Specifications and Performance (3) Model LFE1 LFE2 LFE3

Applicable fluid Water or liquids which do not corrode the fluid contact materials.

Applicable electrical conductivity

5 　 μS/cm

Rated flow range 0.5 to 20.0 L/min 2.5 to 100.0 L/min 5 to 200 L/min

Repeatability Analogue output: +/-1.5%F.S.

Operating fluid temperature


Ambient temperature 0 to 50 oC (No freezing or condensation)


+/-5 %F.S. (25 oC reference)

Operating pressure range

0 to 1 MPa

Withstand pressure 2 MPa

Remote type sensor (1)



Model LFE1 LFE2 LFE3

Analogue output

Response time

0.5 s

Voltage output


Current output



Current consumption 42 mA or less (Load current is not included)

Enclosure IP65


Materials of fluid contact parts

PPS 、 FKM 、 C37

Port size 3/8inch(10A) 1/2inch(15A) 3/4inch(20A) 1inch(25A)

Weight 335 g 395 g 515 g 675 g

Remote type sensor (2)

ConfidentialConfidentialConfidentialConfidential4 ． Specifications and Performance (5) Model LFE0

Display range 0.4 to 24.0 L/min 2.0 to 120.0 L/min 4 to 240 L/min

Min. setting unit 0.1 L/min 0.5 L/min 1 L/min

Accumulated flow range 99999999.9 L 999999999 L

Accuracy Display value: +/-0.5 ％ F.S. Analogue: +/-0.5 ％ F.S.

Repeatability 0.5%F.S.

Operating temperature range



+/-0.5 %F.S. (25 oC reference)

Separate monitor (1)



Model LFE0

Switch output NPN or PNP open collector Max. load current: 80mA, max. applied voltage: 28V

Analogue output

Voltage output


Current output


Response time Can be selected from 0.5 s, 1s, 2s, and 5s. (63% response)

Input and output Input for copy mode

Display type 2 screen display Upper screen: 7seg 4 digits Red ／Green 　 2 colors

Lower screen: 11seg 6 digits White

Operation LED Output 1, 2 orange


Current consumption 50mA or less (Load current is not included)

Enclosure IP40(Note that only the display front is certified as IP65 by using opti

onal panel mount adapter and waterproof seal).


Weight 50 g

Separate monitor (2)


5 ． Construction (Sectional view)

Electrode

Coil Seal(FKM)

Attachment(C37)

Pipe(PPS)

Body(PBT)

M12 connector

ConfidentialConfidentialConfidentialConfidential5 ． Construction (Sectional view)

Electrode

Coil Seal(FKM)

Attachment(C37)

Pipe(PPS)

Body(PBT)

M12 connector


【 SMC 】【 TT 】

Series name LFE series (Integrated type) FD-M series

Model LFE1 LFE2 LFE3 FD-M10 FD-M50 FD-M100

Detecting method Electromagnetic flow meter with Electrostatic capacity

Electromagnetic flow meter with Electrostatic capacity

Rated flow range[L/min] 0.5 to 20 2.5 to 100 5 to 200 0.5 to 10 2.5 to 50 5 to 100

Display and setting range[L/min]

0.4 to 24 2.0 to 120 4 to 240 0.5 to 30 2.5 to 100 5 to 200

Fluid temperature characteristic[%F.S.]

+/-5 % (25 oC reference) Not known

Fluid temperature range: 0 to 85Co Fluid temperature range: 0 to 85Co

Response time [s] Available from 0.25, 0.5, 1, 2, and 5 Available from 0.5, 1, 2.5, 5, 10, 30, and 60

Repeatability [%F.S.]

+/-2 0.5s: +/-5, 1s:+/-3.5, 2.5s: +/-2.5 5s: +/-1.6, 10s:+/-1, 30s: +/-0.8 60s ： +/-0.6

Dimensions [mm](W×H×L)

40×56 ×90

50 x 67 x 105

55 x 73 x 120

56 x 54.1 x 110

65×65.1 ×120

70×71.1 ×130

Weight (g) 340 520 680 853 1100 1310

6 ． Comparison with competitors

ConfidentialConfidentialConfidentialConfidential7 ． How-to-Order (1)

Integrated type sensor

Rated flow range

Symbol

Rated flow range

1 0.5 to 20 L/min

2 2.5 to 100 L/min

3 5 to 200 L/min

Symbol

OUT

J Analogue 1 to 5V

K Analogue 4 to 20 mA

LFE 1 A 3

Output spec.

Port size

Symbol

OUT1 OUT2

A NPN NPN

B PNP PNP

C NPN Analogue 1 to 5V

D NPN Analogue 4 to 20 mA

Thread type

Symbol

Port size Applicable models

LFE1 LFE2 LFE3

３ 3/8 inch ● － -

４ 1/2 inch ● － -

６ 3/4 inch － ● －８ 1 inch － - ●

Remote type sensor LFE 1 J 3

Option

Output spec.

Symbol M12 connector Lead wire (Length 3m)

Bracket Unit specification

Nil ● － L/min

1 - - L/min

2 ● ● L/min

3 - ● L/min

4 ● － Gal/min

5 - - Gal/min

6 ● ● Gal/min

7 - ● Gal/min

Symbol

Nil Rc

N NPT

F G


Separate monitor

7 ． How-to-Order (2)

Type

0 Separate monitor

LFE 0 A － M V C

Output spec.

Symbol OUT1 OUT2

A NPN NPN

B PNP PNP

C NPN Analogue 1 to 5V

D NPN Analogue 4 to 20 mA

Lead wire

Option 2

Option 1

Symbol

Nil With lead wire for power supply/ output

N Without lead wire for power supply/ output

Symbol

Nil None

T Panel mount adapter

V Front protective cover + Panel mount adapter

Symbol

Nil Without connector

C Sensor connector (1 pc.)

Unit specificationSymbo

lInstantaneous flow

Accumulated flow

M L/min L

G Gal/min gal

ConfidentialConfidentialConfidentialConfidential8 ． Dimensions (1) A

B

C

D

E

F

G

2 x port size

H

I

J

4 x K

Symbol

Model

PipingPort siz

e

A B C D E F G H I J K

LFE1□3 3/8 90 73 40 23.5 56 83 89 24 52 28 F2.5 depth 5.5

LFE1□4 1/2 104 73 40 23.5 56 83 89 28 52 28 F2.5 depth 5.5

LFE2□6 3/4 105 78 50 29 67 94 100 35 56 38 F2.5 depth 5.5

LFE3□8 1 120 90 55 32 73 100 106 41 68 43 F2.5 depth 5.5

(Dimensions for remote type sensor are the same as display integrated type.)

Dimensions for display integrated type and remote type sensor

ConfidentialConfidentialConfidentialConfidential8 ． Dimensions (2)

40

40 □3

6.8

40.1

6

(7.5)

2.5

53

47

46

.4

□4

2.4

Front protective cover

Water proof seal Panel

Panel mount adapter

9.2 (2)

Dimensions for separate monitor

Front protective cover + Panel mount adapter


Completely fill the fluid passage with water. The product cannot measure correctly if the fluid passage is not completely filled. If the product is installed vertically, do not apply flow from the top to bottom. Bubbles may cause malfunction.

Ensure the product is used within the operating temperature range.

Operating temperature range is 0 to 50oC, fluid temperature range is 0 to 85oC.

When multiple sensors are used in parallel, install them outside of the area shown below.

9 ． Cautions for handling (1)

50m

m

50m

m

20mm 20mm

Uninstallable area


Positive ground power supply cannot be used.

Short-circuit

Short-circuit

DC(+)DC (-)OUT1OUT2

DC(+) DC(+)

DC(+)The switch cannot be used for equipment in which piping or installation side is connected to DC(+).

In order to identify ground, use a voltage tester and place it on the control board power source DC(-) and the tubing. If the measured voltage is 0V then it is a negative ground. If the measured voltage is 24V then it is a positive ground. Always assure that the customer is advised of this measuring method.

Piping port and the metal part of the body are grounded to DC(-)/ blue line. 　　　　



9 ． Cautions for handling (3) Use liquid with 5μS/cm or higher electrical conductivity.

This product cannot be used for fluids with low electrical conductivity.

This product cannot be used for fluids that do not conduct electricity such as gas, de-ionized water and oil.

Fluid Applicability 　 Note

Water ○ Conductivity of tap water: 100 to 200

μS

De-ionized water X Electrical conductivity is low

Aqueous coolant 　 ○　 When water ratio is more than 50%

Oil X Electrical conductivity is low

Oil based coolant X Electrical conductivity is low

Sea water X Fluid contact part is corroded

GALDEN R X 　 Electrical conductivity is low.

FluorinertTM 　 X Electrical conductivity is low.

GALDEN GALDEN R R is a registered trademark of Solvay Solexis, and Fluorinertis a registered trademark of Solvay Solexis, and FluorinertTMTM is a registered trademark of 3M. is a registered trademark of 3M.


Please download the manual for this product from the SMC World Website

　　 Please be aware that the manual is not included with the product. Please download the manual from the following website.

　　 http://www.smcworld.com/manual/en


ConfidentialConfidentialConfidentialConfidential9. Cautions for handling (5)

For reference

Industrial water Rain waterDeionized wat

erUltra pure wat

er

Distilled waterTap water

Water base coolant

CP EP

MP

0.055μS/cm

LFE series PF3W series

Foreign matter may be in fluid. Prevention against clogging 　 is desired. ↓LFE series has smooth fluid 　 passage.

Clean water is used.There should be no clogging. ↓Compact PF3W series is recommended.

User

Electrical conductivity of liquid

Electrical conductivity of fluids

(Reference)

0.1μS/cm1μS/cm10μS/cm100μS/cm1000μS/cm

Differentiate from close product (Karman vortex type: PF3W series.

ConfidentialConfidentialConfidentialConfidential10 ． Definition and terminology

Electric conductivityElectrical conductivity is a measure of how well elect

ricity flows.Unit is "S/cm (Siemens/ centimeter)".

Reference) Tap water 　 100 to 200μS/cm (5 to 10Ω ・ cm)

Distilled water Approx. 5μS/cm (200Ω ・ cm)

ConfidentialConfidentialConfidentialConfidential11 ．Summary

Compact and light weight.

No obstacles or moving parts in the fluid passage.

Resistant to dust or clogging.

Low pressure loss.

Backflow can be detected. Flow direction can be changed after installation

Good visibility

3 colour 2 display indication shows instantaneous flow rate and the set value simultaneously.

Wide range

Quick response. High repeatability.


Q&A

(1) Gas fluid can be measured.

(2) All types of coolant liquid can be measured.

(3) Contaminated liquid may cause clogging. Filter is necessary.

(4) Instantaneous flow and set value are displayed simultaneously.

(5) Both integrated type and separated type can detect backflow.

(6) If the product is installed vertically, do not apply flow from the top to bottom. Bubbles may cause malfunction.

(7) Response time is fixed to 1s.

(8) Maximum display and set values are the same as rated flow range.

(9) Product can be used with any piping condition.

(10) Electrical conductivity is a measure how well electricity flows.

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