• SMC LFE Electromagnetic Digital Flow Switch (Water, Coolant)
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SMC LFE Electromagnetic Digital Flow Switch (Water, Coolant)

SMC LFE Electromagnetic Digital Flow Switch (Water, Coolant)

SMC LFE series electromagnetic digital flow switch for water and water-soluble coolant, 3-color display or remote type, rated 0.5 to 200 L/min, in insulated and non-insulated versions.

Key features

  • Electromagnetic detection for conductive liquids (5 uS/cm or more), no moving parts
  • Three sizes: LFE1 0.5-20 L/min, LFE2 2.5-100 L/min, LFE3 5-200 L/min
  • Insulated version (Z): port and power supply insulated; non-insulated version shares minus side with port
  • Integrated 3-color 2-screen display with NPN/PNP and analog outputs, or remote type (J/K) for LFE0 monitor
  • Options not expanded: NPT/G thread, lead wire / bracket / gal unit options 1-7, -X8 SUS304 wetted parts

Specifications

Fluid Water, water-soluble coolant
Conductivity 5 uS/cm or more
Detection method Electromagnetic (capacitance)
Operating pressure 0 to 1 MPa
Proof pressure 2 MPa
Fluid temperature 0 to 85 C
Repeatability Display +/-2% F.S., analog +/-1.5% F.S.
Power supply DC24 V +/-10%
Enclosure IP65
Wetted materials PPS, FKM, brass
Weight Approx. 340 g (LFE1 3/8) to 680 g (LFE3)
Source SMC Korea catalog CAT.KS100-107D (SMCKR_LFE.pdf), p. 5-7 (PDF p. 6-8)
LFE1A3Z Version: Insulated | Rated flow: 0.5-20 L/min | Port: Rc3/8 | Output: NPN + NPN
LFE1A3 Version: Non-insulated | Rated flow: 0.5-20 L/min | Port: Rc3/8 | Output: NPN + NPN
LFE1A4Z Version: Insulated | Rated flow: 0.5-20 L/min | Port: Rc1/2 | Output: NPN + NPN
LFE1A4 Version: Non-insulated | Rated flow: 0.5-20 L/min | Port: Rc1/2 | Output: NPN + NPN
LFE1B3Z Version: Insulated | Rated flow: 0.5-20 L/min | Port: Rc3/8 | Output: PNP + PNP
LFE1B3 Version: Non-insulated | Rated flow: 0.5-20 L/min | Port: Rc3/8 | Output: PNP + PNP
LFE1B4Z Version: Insulated | Rated flow: 0.5-20 L/min | Port: Rc1/2 | Output: PNP + PNP
LFE1B4 Version: Non-insulated | Rated flow: 0.5-20 L/min | Port: Rc1/2 | Output: PNP + PNP
LFE1C3Z Version: Insulated | Rated flow: 0.5-20 L/min | Port: Rc3/8 | Output: NPN + analog 1-5 V
LFE1C3 Version: Non-insulated | Rated flow: 0.5-20 L/min | Port: Rc3/8 | Output: NPN + analog 1-5 V
LFE1C4Z Version: Insulated | Rated flow: 0.5-20 L/min | Port: Rc1/2 | Output: NPN + analog 1-5 V
LFE1C4 Version: Non-insulated | Rated flow: 0.5-20 L/min | Port: Rc1/2 | Output: NPN + analog 1-5 V
LFE1D3Z Version: Insulated | Rated flow: 0.5-20 L/min | Port: Rc3/8 | Output: NPN + analog 4-20 mA
LFE1D3 Version: Non-insulated | Rated flow: 0.5-20 L/min | Port: Rc3/8 | Output: NPN + analog 4-20 mA
LFE1D4Z Version: Insulated | Rated flow: 0.5-20 L/min | Port: Rc1/2 | Output: NPN + analog 4-20 mA
LFE1D4 Version: Non-insulated | Rated flow: 0.5-20 L/min | Port: Rc1/2 | Output: NPN + analog 4-20 mA
LFE1E3Z Version: Insulated | Rated flow: 0.5-20 L/min | Port: Rc3/8 | Output: PNP + analog 1-5 V
LFE1E4Z Version: Insulated | Rated flow: 0.5-20 L/min | Port: Rc1/2 | Output: PNP + analog 1-5 V
LFE1F3Z Version: Insulated | Rated flow: 0.5-20 L/min | Port: Rc3/8 | Output: PNP + analog 4-20 mA
LFE1F4Z Version: Insulated | Rated flow: 0.5-20 L/min | Port: Rc1/2 | Output: PNP + analog 4-20 mA
LFE1J3Z Version: Insulated | Rated flow: 0.5-20 L/min | Port: Rc3/8 | Output: Remote, analog 1-5 V
LFE1J3 Version: Non-insulated | Rated flow: 0.5-20 L/min | Port: Rc3/8 | Output: Remote, analog 1-5 V
LFE1J4Z Version: Insulated | Rated flow: 0.5-20 L/min | Port: Rc1/2 | Output: Remote, analog 1-5 V
LFE1J4 Version: Non-insulated | Rated flow: 0.5-20 L/min | Port: Rc1/2 | Output: Remote, analog 1-5 V
LFE1K3Z Version: Insulated | Rated flow: 0.5-20 L/min | Port: Rc3/8 | Output: Remote, analog 4-20 mA
LFE1K3 Version: Non-insulated | Rated flow: 0.5-20 L/min | Port: Rc3/8 | Output: Remote, analog 4-20 mA
LFE1K4Z Version: Insulated | Rated flow: 0.5-20 L/min | Port: Rc1/2 | Output: Remote, analog 4-20 mA
LFE1K4 Version: Non-insulated | Rated flow: 0.5-20 L/min | Port: Rc1/2 | Output: Remote, analog 4-20 mA
LFE2A6Z Version: Insulated | Rated flow: 2.5-100 L/min | Port: Rc3/4 | Output: NPN + NPN
LFE2A6 Version: Non-insulated | Rated flow: 2.5-100 L/min | Port: Rc3/4 | Output: NPN + NPN
LFE2B6Z Version: Insulated | Rated flow: 2.5-100 L/min | Port: Rc3/4 | Output: PNP + PNP
LFE2B6 Version: Non-insulated | Rated flow: 2.5-100 L/min | Port: Rc3/4 | Output: PNP + PNP
LFE2C6Z Version: Insulated | Rated flow: 2.5-100 L/min | Port: Rc3/4 | Output: NPN + analog 1-5 V
LFE2C6 Version: Non-insulated | Rated flow: 2.5-100 L/min | Port: Rc3/4 | Output: NPN + analog 1-5 V
LFE2D6Z Version: Insulated | Rated flow: 2.5-100 L/min | Port: Rc3/4 | Output: NPN + analog 4-20 mA
LFE2D6 Version: Non-insulated | Rated flow: 2.5-100 L/min | Port: Rc3/4 | Output: NPN + analog 4-20 mA
LFE2E6Z Version: Insulated | Rated flow: 2.5-100 L/min | Port: Rc3/4 | Output: PNP + analog 1-5 V
LFE2F6Z Version: Insulated | Rated flow: 2.5-100 L/min | Port: Rc3/4 | Output: PNP + analog 4-20 mA
LFE2J6Z Version: Insulated | Rated flow: 2.5-100 L/min | Port: Rc3/4 | Output: Remote, analog 1-5 V
LFE2J6 Version: Non-insulated | Rated flow: 2.5-100 L/min | Port: Rc3/4 | Output: Remote, analog 1-5 V
LFE2K6Z Version: Insulated | Rated flow: 2.5-100 L/min | Port: Rc3/4 | Output: Remote, analog 4-20 mA
LFE2K6 Version: Non-insulated | Rated flow: 2.5-100 L/min | Port: Rc3/4 | Output: Remote, analog 4-20 mA
LFE3A8Z Version: Insulated | Rated flow: 5-200 L/min | Port: Rc1 | Output: NPN + NPN
LFE3A8 Version: Non-insulated | Rated flow: 5-200 L/min | Port: Rc1 | Output: NPN + NPN
LFE3B8Z Version: Insulated | Rated flow: 5-200 L/min | Port: Rc1 | Output: PNP + PNP
LFE3B8 Version: Non-insulated | Rated flow: 5-200 L/min | Port: Rc1 | Output: PNP + PNP
LFE3C8Z Version: Insulated | Rated flow: 5-200 L/min | Port: Rc1 | Output: NPN + analog 1-5 V
LFE3C8 Version: Non-insulated | Rated flow: 5-200 L/min | Port: Rc1 | Output: NPN + analog 1-5 V
LFE3D8Z Version: Insulated | Rated flow: 5-200 L/min | Port: Rc1 | Output: NPN + analog 4-20 mA
LFE3D8 Version: Non-insulated | Rated flow: 5-200 L/min | Port: Rc1 | Output: NPN + analog 4-20 mA
LFE3E8Z Version: Insulated | Rated flow: 5-200 L/min | Port: Rc1 | Output: PNP + analog 1-5 V
LFE3F8Z Version: Insulated | Rated flow: 5-200 L/min | Port: Rc1 | Output: PNP + analog 4-20 mA
LFE3J8Z Version: Insulated | Rated flow: 5-200 L/min | Port: Rc1 | Output: Remote, analog 1-5 V
LFE3J8 Version: Non-insulated | Rated flow: 5-200 L/min | Port: Rc1 | Output: Remote, analog 1-5 V
LFE3K8Z Version: Insulated | Rated flow: 5-200 L/min | Port: Rc1 | Output: Remote, analog 4-20 mA
LFE3K8 Version: Non-insulated | Rated flow: 5-200 L/min | Port: Rc1 | Output: Remote, analog 4-20 mA
Flow SwitchesSMC
56 product codes available in this family
Sourced direct from KoreaExport-ready supplyCompetitive pricing
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SMC LFE Electromagnetic Digital Flow Switch (Water, Coolant)

Brand SMC·Flow Switches

Available part numbers (56)

LFE1A3Z, LFE1A3, LFE1A4Z, LFE1A4, LFE1B3Z, LFE1B3, LFE1B4Z, LFE1B4, LFE1C3Z, LFE1C3 + 46 more — see full table ↓

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Product codes & specifications
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Product codeSpec
LFE1A3ZVersion: Insulated | Rated flow: 0.5-20 L/min | Port: Rc3/8 | Output: NPN + NPN
LFE1A3Version: Non-insulated | Rated flow: 0.5-20 L/min | Port: Rc3/8 | Output: NPN + NPN
LFE1A4ZVersion: Insulated | Rated flow: 0.5-20 L/min | Port: Rc1/2 | Output: NPN + NPN
LFE1A4Version: Non-insulated | Rated flow: 0.5-20 L/min | Port: Rc1/2 | Output: NPN + NPN
LFE1B3ZVersion: Insulated | Rated flow: 0.5-20 L/min | Port: Rc3/8 | Output: PNP + PNP
LFE1B3Version: Non-insulated | Rated flow: 0.5-20 L/min | Port: Rc3/8 | Output: PNP + PNP
LFE1B4ZVersion: Insulated | Rated flow: 0.5-20 L/min | Port: Rc1/2 | Output: PNP + PNP
LFE1B4Version: Non-insulated | Rated flow: 0.5-20 L/min | Port: Rc1/2 | Output: PNP + PNP
LFE1C3ZVersion: Insulated | Rated flow: 0.5-20 L/min | Port: Rc3/8 | Output: NPN + analog 1-5 V
LFE1C3Version: Non-insulated | Rated flow: 0.5-20 L/min | Port: Rc3/8 | Output: NPN + analog 1-5 V
LFE1C4ZVersion: Insulated | Rated flow: 0.5-20 L/min | Port: Rc1/2 | Output: NPN + analog 1-5 V
LFE1C4Version: Non-insulated | Rated flow: 0.5-20 L/min | Port: Rc1/2 | Output: NPN + analog 1-5 V
LFE1D3ZVersion: Insulated | Rated flow: 0.5-20 L/min | Port: Rc3/8 | Output: NPN + analog 4-20 mA
LFE1D3Version: Non-insulated | Rated flow: 0.5-20 L/min | Port: Rc3/8 | Output: NPN + analog 4-20 mA
LFE1D4ZVersion: Insulated | Rated flow: 0.5-20 L/min | Port: Rc1/2 | Output: NPN + analog 4-20 mA
LFE1D4Version: Non-insulated | Rated flow: 0.5-20 L/min | Port: Rc1/2 | Output: NPN + analog 4-20 mA
LFE1E3ZVersion: Insulated | Rated flow: 0.5-20 L/min | Port: Rc3/8 | Output: PNP + analog 1-5 V
LFE1E4ZVersion: Insulated | Rated flow: 0.5-20 L/min | Port: Rc1/2 | Output: PNP + analog 1-5 V
LFE1F3ZVersion: Insulated | Rated flow: 0.5-20 L/min | Port: Rc3/8 | Output: PNP + analog 4-20 mA
LFE1F4ZVersion: Insulated | Rated flow: 0.5-20 L/min | Port: Rc1/2 | Output: PNP + analog 4-20 mA
LFE1J3ZVersion: Insulated | Rated flow: 0.5-20 L/min | Port: Rc3/8 | Output: Remote, analog 1-5 V
LFE1J3Version: Non-insulated | Rated flow: 0.5-20 L/min | Port: Rc3/8 | Output: Remote, analog 1-5 V
LFE1J4ZVersion: Insulated | Rated flow: 0.5-20 L/min | Port: Rc1/2 | Output: Remote, analog 1-5 V
LFE1J4Version: Non-insulated | Rated flow: 0.5-20 L/min | Port: Rc1/2 | Output: Remote, analog 1-5 V
LFE1K3ZVersion: Insulated | Rated flow: 0.5-20 L/min | Port: Rc3/8 | Output: Remote, analog 4-20 mA
LFE1K3Version: Non-insulated | Rated flow: 0.5-20 L/min | Port: Rc3/8 | Output: Remote, analog 4-20 mA
LFE1K4ZVersion: Insulated | Rated flow: 0.5-20 L/min | Port: Rc1/2 | Output: Remote, analog 4-20 mA
LFE1K4Version: Non-insulated | Rated flow: 0.5-20 L/min | Port: Rc1/2 | Output: Remote, analog 4-20 mA
LFE2A6ZVersion: Insulated | Rated flow: 2.5-100 L/min | Port: Rc3/4 | Output: NPN + NPN
LFE2A6Version: Non-insulated | Rated flow: 2.5-100 L/min | Port: Rc3/4 | Output: NPN + NPN
LFE2B6ZVersion: Insulated | Rated flow: 2.5-100 L/min | Port: Rc3/4 | Output: PNP + PNP
LFE2B6Version: Non-insulated | Rated flow: 2.5-100 L/min | Port: Rc3/4 | Output: PNP + PNP
LFE2C6ZVersion: Insulated | Rated flow: 2.5-100 L/min | Port: Rc3/4 | Output: NPN + analog 1-5 V
LFE2C6Version: Non-insulated | Rated flow: 2.5-100 L/min | Port: Rc3/4 | Output: NPN + analog 1-5 V
LFE2D6ZVersion: Insulated | Rated flow: 2.5-100 L/min | Port: Rc3/4 | Output: NPN + analog 4-20 mA
LFE2D6Version: Non-insulated | Rated flow: 2.5-100 L/min | Port: Rc3/4 | Output: NPN + analog 4-20 mA
LFE2E6ZVersion: Insulated | Rated flow: 2.5-100 L/min | Port: Rc3/4 | Output: PNP + analog 1-5 V
LFE2F6ZVersion: Insulated | Rated flow: 2.5-100 L/min | Port: Rc3/4 | Output: PNP + analog 4-20 mA
LFE2J6ZVersion: Insulated | Rated flow: 2.5-100 L/min | Port: Rc3/4 | Output: Remote, analog 1-5 V
LFE2J6Version: Non-insulated | Rated flow: 2.5-100 L/min | Port: Rc3/4 | Output: Remote, analog 1-5 V
LFE2K6ZVersion: Insulated | Rated flow: 2.5-100 L/min | Port: Rc3/4 | Output: Remote, analog 4-20 mA
LFE2K6Version: Non-insulated | Rated flow: 2.5-100 L/min | Port: Rc3/4 | Output: Remote, analog 4-20 mA
LFE3A8ZVersion: Insulated | Rated flow: 5-200 L/min | Port: Rc1 | Output: NPN + NPN
LFE3A8Version: Non-insulated | Rated flow: 5-200 L/min | Port: Rc1 | Output: NPN + NPN
LFE3B8ZVersion: Insulated | Rated flow: 5-200 L/min | Port: Rc1 | Output: PNP + PNP
LFE3B8Version: Non-insulated | Rated flow: 5-200 L/min | Port: Rc1 | Output: PNP + PNP
LFE3C8ZVersion: Insulated | Rated flow: 5-200 L/min | Port: Rc1 | Output: NPN + analog 1-5 V
LFE3C8Version: Non-insulated | Rated flow: 5-200 L/min | Port: Rc1 | Output: NPN + analog 1-5 V
LFE3D8ZVersion: Insulated | Rated flow: 5-200 L/min | Port: Rc1 | Output: NPN + analog 4-20 mA
LFE3D8Version: Non-insulated | Rated flow: 5-200 L/min | Port: Rc1 | Output: NPN + analog 4-20 mA
LFE3E8ZVersion: Insulated | Rated flow: 5-200 L/min | Port: Rc1 | Output: PNP + analog 1-5 V
LFE3F8ZVersion: Insulated | Rated flow: 5-200 L/min | Port: Rc1 | Output: PNP + analog 4-20 mA
LFE3J8ZVersion: Insulated | Rated flow: 5-200 L/min | Port: Rc1 | Output: Remote, analog 1-5 V
LFE3J8Version: Non-insulated | Rated flow: 5-200 L/min | Port: Rc1 | Output: Remote, analog 1-5 V
LFE3K8ZVersion: Insulated | Rated flow: 5-200 L/min | Port: Rc1 | Output: Remote, analog 4-20 mA
LFE3K8Version: Non-insulated | Rated flow: 5-200 L/min | Port: Rc1 | Output: Remote, analog 4-20 mA

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