Serviceline Industrial Sensors
Serviceline Explosion Protection

Float Switch LFL2-BK-U-PUR5-EMS

  • Switch element: microswitch, mercury-free
  • Limit value detection for fluids
  • Ball design: high buoyancy

Please 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.

Download the complete datasheet as a PDF:

Datasheet excerpt: Technical data of  LFL2-BK-U-PUR5-EMS

Electrical specifications
Contact loading250 V AC/3 A; 150 V DC/0.25 A resistive load; 60 V DC/1 A resistive load
Rated insulation voltage300 V
Pulse withstand voltage4 kV
Electrical life≥ 5 x 104 switching cycles
Directive conformity
Low voltage
Directive 2014/35/EUEN 60947-5-1:2004 + Cor.:2005 + A1:2009
Degree of protectionIEC 60529:2001
Descriptionmicroswitch with switching ball, change-over contact
Function and system design
Equipment architectureThis device may be used with any sequential circuit, as long as the circuit can support the electrical circuit values of the switching elements.
Operating conditions
Installation conditions
Installation instructionsrange of application and minimum length between mounting and float:
≥ 100 mm (4 inch), preferred for fuels, heating oils, oily fluids
The float switch is mounted 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)≤ 2 bar (29 psi) at 20 °C (68 °F)
Density≥ 0.6 g/cm3
Ambient conditions
Ambient temperature5 ... 70 °C (41 ... 158 °F)
Storage temperature-25 ... 70 °C (-13 ... 158 °F)
Altitude≤ 2000 m above MSL
Mechanical specifications
Degree of protectionIP68
Length5 m
Mechanical construction
Materialfloat: PP (Polypropylene)
cable: PUR, highly flexible (3 x 0.50 mm2)
Switching pointswitch angle, measured against the horizontal:
- upper switch point +25° ±10°
- lower switch point -14° ±10°
General information
Supplementary informationStatement of Conformity, Declaration of Conformity, Attestation of Conformity and instructions have to be observed where applicable. For information see

Documents: LFL2-BK-U-PUR5-EMS

Instruction manualsLanguageFile TypeFile Size
ИнструкцииBULPDF124 KB
Návod k poużitíCZEPDF120 KB
Instruktions manualDANPDF119 KB
Instruction manualENGPDF43 KB
KasutusjuhendESTPDF117 KB
KäyttöohjeFINPDF0 KB
Manuel d'instructionsFRAPDF58 KB
BetriebsanleitungGERPDF46 KB
Οδηγίες χρήσηςGREPDF126 KB
HandleidingHOLPDF119 KB
Instruction manual / BetriebsanleitungHRVPDF118 KB
Használati útmutatóHUNPDF120 KB
Manuale di istruzioniITAPDF46 KB
Lietošanas pamācībaLAVPDF119 KB
Instrukciju vadovasLITPDF121 KB
Instrukcja obsługiPOLPDF122 KB
Manual de instruçõesPORPDF119 KB
Manual de utilizareRONPDF120 KB
Návod na poużitieSLKPDF120 KB
Navodila za uporaboSLVPDF117 KB
Manual de instruccionesSPAPDF57 KB
ManualSWEPDF118 KB
Technical information
Declaration of Contamination / Erklärung zur KontaminationALLPDF137 KB


CADFile TypeFile Size
3-D model in IGS format / 3-D-Modell im IGS-FormatIGS1382 KB
3-D model in STP format / 3-D-Modell im STP-FormatSTP482 KB

Approvals+Certificates: LFL2-BK-U-PUR5-EMS

Statements of complianceCertificate No.File TypeFile Size
EU-Declaration of conformity / EU-KonformitätserklärungDOC-1832CPDF70 KB

Associated Products: LFL2-BK-U-PUR5-EMS


Function: LFL2-BK-U-PUR5-EMS

The microswitch (change-over contact) is integrated in a PP float and is activated in the event of deviations from the horizontal position. The switching ball in the float, which moves along an axis, activates the microswitch.