LFS Series
Stainless steel SS304 paddle
Paddle Flow Switches
3/4”PF or 1”PT mounting plug thread
IP65 Aluminium alloy housing or DIN 43650 connection
Use for flow detection in pipes from 1” bore to 3”
bore
Maximum operating pressure 20 bar
Technical Specification
Housing material
Temperature range
Set point tolerance
Repeatability
Aluminium Alloy
See chart below
±25 %
Paddle material
Maximum pressure
Pressure drop
304grade SS
20 bar
0.2 bar
±5%
Connection in housing or by DIN 43650
Electrical Specification
Contact Form
Switching Power Max
Switching Voltage AC/DC Max
Switching Current Max
SPDT
40
230
1.0
VA
V
A
All ratings are for resistive load only.
Standard Parts
Mounting thread
Operating Temperature
Connection
LFS-01
1”NPT
-30 to +75°C
-30 to +150°C
-30 to +75°C
-30 to +150°C
-30 to +75°C
-30 to +120°C
-30 to +75°C
-30 to +120°C
Terminate in housing
Terminate in housing
Terminate in housing
Terminate in housing
DIN 43650
LFS-01H
LFS-02
LFS-02H
LFS-03
LFS-03H
LFS-04
1"NPT
3/4”BSP
3/4"BSP
1”NPT
1"NPT
3/4”BSP
DIN 43650
DIN 43650
DIN 43650
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.
LFS-04H
3/4"BSP
Pipe Dia
Switch
Paddle length
1"
1.25"
1.50"
2"
2.5"
Rel Op
3"
Rel
Op Rel Op Rel Op Rel Op Rel Op
1"
1.25"
1.50"
2"
2.5"
3"
19 15.2 32.2 24.7 45.5 34.1 64.4 56.8
24.7 17.1 34.1 26.5 56.8 45.5 87.1 75.8
53 37.9 87.1 60.6 121.2 94.7
68.2 45.5 90.9 64.4 125 102.3
75.8 49.3 102.3 121.2
83.3 60.6
NB: Flow rates in litres per minute
Mechanical Dimensions
80
80
DIN 43650
DIN 43650
1/2"BSP
1/2"BSP
38 AF
38 AF
38 AF
38 AF
3/4"BSP
1"NPT
1"NPT
3/4"BSP
Cynergy3 Components Ltd.
7 Cobham Road
Ferndown Industrial Estate
Wimborne, Dorset BH21 7PE
Telephone +44 (0) 1202 897969
Email:sales@cynergy3.com
25
Model No. LFS-03/H
25
Model No. LFS-01/H
25
Model No. LFS-02/H
25
Model No. LFS-04/H
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