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ISO

LFS Series

Paddle Flow Switches

Cynergy3 Components Ltd.

NB: Flow rates in litres per minute

7 Cobham Road

Ferndown Industrial Estate

Wimborne, Dorset BH21 7PE

Telephone +44 (0) 1202 897969

Email:sales@cynergy3.com

The LFS range of flow switches are paddle

devices that are mounted vertically

through a socket or upstand process

connection.

Electrical connections are made within the

housing, which has a screw on sealed lid

and cable gland.

A choice of paddle sizes is supplied with

each switch and selection can be made

with reference to the chart opposite.

Mechanical Dimensions

IP65 Aluminium alloy housing or DIN 43650 connection

Maximum operating pressure 20 bar

Stainless steel SS304 paddle

3/4”PF or 1”PT mounting plug thread

Use for flow detection in pipes from 1” bore to 3”

bore

T

echnical Specification

Housing material

Aluminium Alloy

Paddle material

304grade SS

Temperature range

See chart below

Maximum pressure

20 bar

Set point tolerance

±25 %

Pressure drop

0.2 bar

Repeatability

±5%

Connection in housing or by DIN 43650

Electrical Specification

Contact Form

SPDT

Switching Power Max

VA

40

Switching Voltage AC/DC Max

V

230

Switching Current Max

A

1.0

All ratings are for resistive load only.

Standard Parts

Mounting thread

Operating Temperature

Connection

LFS-01

1”NPT

-30 to +75°C

Terminate in housing

LFS-01H

1"NPT

-30 to +150°C

Terminate in housing

LFS-02

3/4”BSP

-30 to +75°C

Terminate in housing

LFS-02H

3/4"BSP

-30 to +150°C

Terminate in housing

LFS-03

1”NPT

-30 to +75°C

DIN 43650

LFS-03H

1"NPT

-30 to +120°C

DIN 43650

LFS-04

3/4”BSP

-30 to +75°C

DIN 43650

LFS-04H

3/4"BSP

-30 to +120°C

DIN 43650

1"NPT

1"NPT

25

25

80

1/2"BSP

38 AF

38 AF

38 AF

38 AF

3/4"BSP

3/4"BSP

25

25

80

1/2"BSP

DIN 43650

DIN 43650

Model No. LFS-02/H

Model No. LFS-03/H

Model No. LFS-04/H

Model No. LFS-01/H

Switch

Op Rel

Op

Rel

Op

Rel

Op

Rel

Op

Rel

Op

Rel

1"

19 15.2 32.2 24.7 45.5 34.1 64.4 56.8

1.25"

24.7 17.1 34.1 26.5 56.8 45.5

87.1 75.8

1.50"

53 37.9 87.1 60.6 121.2 94.7

2"

68.2 45.5

90.9 64.4

125 102.3

2.5"

75.8 49.3 102.3 121.2

3"

83.3

60.6

Paddle length

2.5"

3"

Pipe Dia

1"

1.25"

1.50"

2"