LFL1-*K-N-***** Float Switch

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Switch element: float switch with initiator, mercury-free
Electrical connections in acc. with NAMUR for hazardous area
Limit value detection for fluids
Sleeve design: small diameter, mounting through G1 tap hole possible
Ball design: high buoyancy

Nota

Todos los documentos relacionados con los productos, como certificados, declaraciones de conformidad, etc., que se emitieron antes de la conversión con el nombre de Pepperl+Fuchs GmbH o Pepperl+Fuchs AG también se aplican a Pepperl+Fuchs SE.

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Datos técnicos de LFL1-*K-N-*****

Construction type		Inductive sensor with switching ball
Series		LFL1-**-N

Rated voltage	U_r	8.2 V ± 2 V
Current consumption		< 1.0 mA unswitched (de-energized at the bottom), > 2.2 mA switched (floated up at the top)
Reverse polarity protection		yes

Connection

NAMUR acc. to EN 60947-5-6 , 2-wire

Electromagnetic compatibility

Directive 2014/30/EU

EN 60947-5-2:2007+A1:2012

Degree of protection

IEC 60529:2001

Equipment architecture

A measuring system consists of a float switch LFL1-**-N and a transformer isolated barrier,
e. g. KFD2-SR2-Ex1.W.

Installation conditions

Installation instructions

range of application and minimum length between mounting and float:
- PVC version: ≥ 50 mm (2 inch), preferred for water
- 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

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)
Density		sleeve design: ≥ 0.8 g/cm³ ball design: ≥ 0.6 g/cm³

Ambient temperature		-20 ... 70 °C (-4 ... 158 °F)
Storage temperature		-25 ... 70 °C (-13 ... 158 °F)
Altitude		≤ 2000 m above MSL

Degree of protection

IP68

EU-type examination certificate

TÜV 99 ATEX 1407

Marking

II 2G Ex ia IIB T5 Gb

Directive conformity

Directive 2014/34/EU

EN 60079-0:2012+A11:2013 , EN 60079-11:2012

Material		float: PP (Polypropylene) cable: - PVC version: PVC cable, highly flexible (2 x 0.75 mm²) - PUR version: PUR cable, highly flexible (2 x 0.50 mm²) - CSM/CM version: CSM/CM cable (chlorinated polyethylene, (2 x 0.75 mm²))
Switching point		switch angle, measured against the horizontal: - upper switch point +15° ±5° - lower switch point -15° ±5°

Supplementary information

Observe 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

Notas generales

Noticias y aplicaciones relacionadas

Obtenga más información sobre noticias y aplicaciones relacionadas con este producto.

limit value detection for pharmaceutical vessels, Pepperl+Fuchs

Limit Value Detection for Pharmaceutical Vessel Applications

Controlling the dosing process for a novel pharmaceutical product involves specific considerations. The implementation occurred in a hazardous area, necessitating the regulation of wastewater levels within a designated vessel.

Más información