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  6. LFL4-*K-A2-*****

LFL4-*K-A2-***** Float Switch

Key Benefits at a Glance

  • Switch element: float switch with initiator, mercury-free
  • Electrical connection with PNP output stage
  • Limit value detection for fluids
  • Sleeve design: small diameter, mounting through G1 tap hole possible
  • Ball design: high buoyancy

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Product photo: Float Switch LFL4-*K-A2-*****
Product photo: Float Switch LFL4-*K-A2-*****
Product Compliance: Europe – CE
Note

All product-related documents, such as certificates, declarations of conformity, etc., which were issued prior to the conversion under the name Pepperl+Fuchs GmbH or Pepperl+Fuchs AG, also apply to Pepperl+Fuchs SE.

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DatasheetFunctionClassificationProduct DocumentationApprovals

Technical data of LFL4-*K-A2-*****

Construction typeInductive sensor with switching ball
SeriesLFL4
Rated voltageUr10 ... 30 V
Current consumption< 10 mA at 24 V
Reverse polarity protectionyes
ConnectionPNP NO/NC
Electromagnetic compatibility
Directive 2014/30/EUEN IEC 60947-5-2:2020
Degree of protectionIEC 60529:2014
Installation conditions
Installation instructionsrange of application and minimum length between mounting and float:
- PUR version: ≥ 100 mm (4 inch), preferred for fuels, heating oils, oily fluids
- CSM/CM version: ≥ 100 mm (4 inch), preferred for many acids and lyes
- TPK version: ≥ 100 mm (4 inch), preferred for many acids and lyes

mounting:
- The float switch is mounted either from sidewards through a cable gland ≥ G1A into the vessel or
- by means of a counter weight or rods (e. g. float switch combination) from the top.
The pivot of the cable should always be horizontal.
Process conditions
Process pressure (static pressure)sleeve design: ≤ 3 bar at 20 °C (68 °F)
ball design: ≤ 2 bar at 20 °C (68 °F)
Ambient temperatureCable:
- CSM/CM version: -20 ... 70 °C (-4 ... 158 °F)
- PUR version: -20 ... 70 °C (-4 ... 158 °F)
- TPK version: 5 ... 70 °C (41 ... 158 °F)
- TPKF version: 5 ... 70 °C (41 ... 158 °F)
Storage temperature-25 ... 70 °C (-13 ... 158 °F)
Altitude≤ 2000 m above MSL
Degree of protectionIP68
Dimensionsfloat:
- sleeve design: Ø29.2 x 135 mm
- ball design: Ø86 mm
Cable:
- CSM/CM version: Ø6.7 mm
- PUR version: Ø4.8 mm
- TPK version: Ø6.9 mm
- TPKF version: Ø5.9 mm
Materialfloat: PP (Polypropylene)
cable:
- CSM/CM version: CSM/CM cable (4 x 0.75 mm2)
- PUR version: PUR cable, highly flexible (4 x 0.50 mm2)
- TPK version: TPK cable (4 x 0.75 mm2)
- TPKF version: TPK cable, flexible (4 x 0.34 mm2)
Switching pointswitch angle, measured against the horizontal:
- upper switch point +15° ±5°
- lower switch point -15° ±5°
Supplementary informationObserve the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com.
Designation- LFL-Z231, counter nut, G1A, PVC
- LFL-Z32, counter weight, grey cast iron with plastic coating (Polycarbonate)
- LFL-Z33, counter weight, grey cast iron with ECTFE coating (Halar)
- LFL-Z131, gland screw connection G1A, PVC
- LFL-Z132, gland screw connection G1A, brass
- LFL-Z161, gland screw connection G2A, PVC
- LFL-Z431, gland screw connection 1 NPT, PVC
- LFL-Z461, gland screw connection 2 NPT, PVC
General Notes

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