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Diaphragm Type Flow Switch IFW5 Series (IFW520-04-56)

Diaphragm Type Flow Switch IFW5 Series IFW520-04-56

SMC

SMC

A pressure switch made by SMC.

[Features]
· Low flow (1 L/min) setting is possible
· Easy to set
It can be set with a screwdriver from the outside without removing the cover
· With light

[Applications]
· Used for detection and confirmation of flow as a general-purpose water cutoff, water reduction relay in cooling water fixtures in general industrial machinery.

(i)Caution

  • See catalog for specification details.
  • Product pictures are representations. CAD data is not supported for some model numbers.

PDF

Part Number

Configured Part Number is shown.

IFW520-04-56

Specifications of Diaphragm-Type Flow Switch IFW5 Series

External appearance of IFW5 Series

External appearance of IFW5 Series

FluidWater / Non corrosive liquid*
Operating Pressure0.1 to 0.6 MPa
Water resistance1.2 MPa
Operating temperature range-5 to 60°C (no freezing)
ActionDiaphragm Regulator
Insulation Resistance100 MΩ or more (500 DC by insulation resistance tester)
Withstand Voltage1,500 V AC for 1 minute
ContactWithout terminal box: 1ab
With terminal box: 1a and 1b
Connection port size3/8, 1/2, 3/4
Liquid-contacting parts materialBodyCAC408
RodC3604B
Diaphragm*)NBR

* Please contact the manufacturer support center for further details of use.
*) Select "-X404" for ozone environment.

Model

ModelSet flow rate range L/minMaximum flow rate L/min*) Hysteresis L/min
IFW5101 to 10201 or less
IFW52010 to 20251.5 or less
IFW55020 to 50603 or less

*) Hysteresis is the flow rate required to move the micro switch from the operating position (ON signal) to the return position (OFF signal). (Typical value)

Microswitch rating

VoltageNon-inductive load (A)Inductive load (A)
Load resistanceLamp loadInductive loadElectric motor load
N.C.N.O.N.C.N.O.N.C.N.O.N.C.N.O.
AC125V551.50.7442.51.3
AC250V5510.5441.50.8
DC8V75335433
DC14V55334433
DC30V55334433
DC125V0.40.40.10.10.40.40.10.1
DC250V0.30.30.050.050.30.30.050.05

Structure and operating principle diagram

IFW5 Series structure and operating principle diagram

IFW5 Series structure and operating principle diagram

Operating Principle

When water flows, a differential pressure is generated before and after the orifice at the port of body 1. This differential pressure is detected by a pair of upper and lower diaphragms, rod 2 is displaced downward, operating lever 4 is lowered, and the micro switch is turned on.
If the flow rate is increased, the rod will be displaced downwards by 2, and if it is decreased, it will be displaced upwards. In addition, the adjustment gear 5 can be rotated and the gear 3 can be moved vertically to detect signals at any flow rate.

NumberPart NameMaterial
1BodyCAC408
2RodC3604B
3GearPOM
NumberPart NameMaterial
4Operating leverSPCC
5Adjusting gearPOM

Flow Characteristics (Representative Values)

IFW510 flow rate characteristics (Typical value)

IFW510 flow rate characteristics (Typical value)

IFW520 flow rate characteristics (Typical value)

IFW520 flow rate characteristics (Typical value)

IFW550 flow rate characteristics (Typical value)

IFW550 flow rate characteristics (Typical value)

Dimensions

 

(Units: mm)

 

Dimensional drawing of IFW5□0-□□-00 to 04 (without terminal box)

Dimensional drawing of IFW5□0-□□-00 to 04 (without terminal box)

Dimensional drawing of IFW5□0-□□-10 to 24 (with terminal box)

Dimensional drawing of IFW5□0-□□-10 to 24 (with terminal box)

Dimensional drawing of IFW5□0-□□-55 to 86 (with 24 V DC lamp and terminal box)

Dimensional drawing of IFW5□0-□□-55 to 86 (with 24 V DC lamp and terminal box)

Internal wiring diagram

Internal wiring diagram of IFW5□0-□□-00, 10, 20

Internal wiring diagram of IFW5□0-□□-00, 10, 20

SymbolContactLead Wire Color
CCOMMONBlack
ANORMALLY OPENWhite
BNORMALLY CLOSEDRed
Internal wiring diagram of IFW5□0-□□-01 to 04, 11 to 14, 21 to 24

Internal wiring diagram of IFW5□0-□□-01 to 04, 11 to 14, 21 to 24

SymbolContactLead Wire Color
CCOMMONBlack
ANORMALLY OPENWhite
BNORMALLY CLOSEDRed

Notes

Mounting/wiring

  1. * 1Please mount the switch so as to align the arrow on the side of the body with the flow of fluid.
  2. * 2Always fill the flow path with liquid.
  3. * 3The mounting direction can be horizontal or vertical.
  4. * 4Before and after the pipe on which the product is mounted, a straight section that is 5 times or more the opening diameter of the pipe should be provided in order to keep away as far as possible from anything that disturbs the flow such as elbows and valves.
  5. * 5For wiring, refer to the above internal wiring diagram or catalog.
  6. * 6If there is no terminal box, select 1a or 1b as the contact for wiring. In that case, the unused lead wires requires to be insulated.
  7. * 7As it is an open type, it cannot be used in a place where water or oil is scattered.
  8. * 8It cannot be used when water hammer or pulsating pressure is applied to the fluid.
  9. * 9A filter of approximately 100 mesh on the inlet side of the flow switch should be installed to prevent malfunction and diaphragm damage due to dust and cutting chips in the fluid.

Adjustment

  1. * 1To set the flow rate, remove the grommet at the top of the cover and turn the flow rate adjustment gear with a straight-slot screwdriver. Turning it clockwise increases the set flow rate, and turning it counterclockwise decreases it.
  2. * 2The flow rate set point is the ON flow rate set point, so for the 1a contact, the ON signal is output when the flow rate exceeds the set flow rate.
  3. * 3In case of 1b contact, the ON signal is output when the flow rate decreases by hysteresis from the set flow rate.
  4. * 4To prevent chattering due to fluctuations in the operating flow rate, make the difference between the set flow rate and the operating flow rate as large as possible.
  5. * 5Use below the maximum operating pressure and flow rate.
  6. * 6The scale on the window name plate is a standard. For precise settings, please mount a flow meter to the outlet side of the flow rate switch. When setting a low flow rate when using at a pressure of 0.2 MPa or more, the indicator needle and scale plate may interfere. In this case, remove the indicator needle and scale plate and set. After setting, attach the indicator needle and scale plate at any positions.

Additional Precautions

  • *See the SMC catalog for information other than that detailed above.
  • *Product pictures are representative images.
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  1. 1
Part Number
IFW520-04-56
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipFlow Rate Range (Max. Value)
(L/min) 		Plumbing Thread Type Plumbing Thread Nominal Rating Flow Range
(L/min) 		Contact configuration Terminal box Lamp CE compliant

-

1 Piece(s) Quote 10～Less than 50[Rc (R)] Rc[1/2] 1/210 to 201bWith terminal box (For 24 V DC/+COM)With LED light (24 V DC, green)Non-Compatible

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  1. 1
 

Basic Information

Type Flow Switch Fluid Type Water Sensor, Monitor Structure Integrated shape
Output Method Switch Pipe Port Type Female Thread Fluid Characteristics Noncorrosive
Number of Output Points 1 Applicable Fluid Water / Non corrosive liquid* Rated Pressure Range 0.1 to 0.6 MPa

Please check the type/dimensions/specifications of the part IFW520-04-56 in the Diaphragm Type Flow Switch IFW5 Series series.

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Specification/Dimensions

  • type

    • IFW510
    • IFW520
    • IFW550

    Clear

  • Flow Rate Range (Max. Value)(L/min)

    • 10～Less than 50
    • 50～Less than 100

    Clear

  • Plumbing Thread Type

    • Rc (R)
      • Rc
    • G
      • G
    • NPT
      • NPT

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  • Plumbing Thread Nominal

    • 3/8
      • 3/8
    • 1/2
      • 1/2
    • 3/4
      • 3/4

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  • Rating Flow Range(L/min)

    • 1 to 10
    • 10 to 20
    • 20 to 50

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  • Contact configuration

    • 1a
    • 1ab
    • 1b

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  • Terminal box

    • With terminal box (24 V DC / -COM)
    • With terminal box (For 24 V DC/-COM)
    • With terminal box (For 24 V DC/+COM)
    • No terminal box
    • With terminal box
    • Without terminal box

    Clear

  • Lamp

    • With LED light (24 V DC, green)
    • With LED light (24 V DC, red)
    • With neon lamp (110 V AC green)
    • With neon lamp (red for AC110V)
    • With neon light (110 V AC, red)
    • With neon lamp (220 V AC red)
    • With neon lamp (220 V AC, green)
    • Without light

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  • CE compliant

    • CE-compliant product
    • Non-Compatible
    • None

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  • CAD

    • 2D
    • 3D

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Days to Ship

    • All
    • 32 Day(s) or Less
    • 41 Day(s) or Less

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Specify Alterations

Similar Part Numbers

Part Number
IFW510-03-01-Q
IFW510-03-02
IFW510-03-03
IFW520-04-56-Q
IFW520-04-65
IFW520-04-66
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipFlow Rate Range (Max. Value)
(L/min) 		Plumbing Thread Type Plumbing Thread Nominal Rating Flow Range
(L/min) 		Contact configuration Terminal box Lamp CE compliant

-

1 Piece(s) Quote 10～Less than 50[Rc (R)] Rc[3/8] 3/81 to 101abWithout terminal boxWith neon light (110 V AC, red)CE-compliant product

SGD 283.50

1 Piece(s) 32 Day(s) 10～Less than 50[Rc (R)] Rc[3/8] 3/81 to 101abWithout terminal boxWith neon lamp (110 V AC green)Non-Compatible

SGD 283.50

1 Piece(s) 32 Day(s) 10～Less than 50[Rc (R)] Rc[3/8] 3/81 to 101abWithout terminal boxWith neon lamp (220 V AC red)Non-Compatible

-

1 Piece(s) Quote 10～Less than 50[Rc (R)] Rc[1/2] 1/210 to 201bWith terminal box (For 24 V DC/+COM)With LED light (24 V DC, green)CE-compliant product

-

1 Piece(s) Quote 10～Less than 50[Rc (R)] Rc[1/2] 1/210 to 201aWith terminal box (For 24 V DC/+COM)With LED light (24 V DC, red)Non-Compatible

SGD 318.38

1 Piece(s) 32 Day(s) 10～Less than 50[Rc (R)] Rc[1/2] 1/210 to 201aWith terminal box (For 24 V DC/+COM)With LED light (24 V DC, green)Non-Compatible

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