P R O C E S S A U T O M A T I O N Float Switch LFL2 - switching element: micro switch 135 - limit value detection for liquids ø29.2 - cylinder type: small diameter, mounting through G1" tap hole possible - ball type: high buoyancy Cylinder type LFL2-CK Cylinder type LFL2-CK-U-PVC3 LFL2-CK-U-PVC5 LFL2-CK-U-CSM3 LFL2-CK-U-CSM5 Ball type LFL2-BK-U-PVC3 LFL2-BK-U-PVC5 LFL2-BK-U-CSM3 LFL2-BK-U-CSM5 l Ba Function principle The micro switch (change over) is build into a PP-float and switches when out of the horizontal line. The switching ball is running on-axis and changes the state of the micro switch. lø 86 Ball type LFL2-BK G1A G2A Mounting The float is mounted either from sidewards through a cable gland ≥ G1A into the vessel or by means of an additional mass, or rods (e.g. float switch combination) from the top. The pivot of the cable should always be horizontal. The minimum length of the cable between mounting and float is depending of the cable material (see technical data). Accessories: cable gland Types Connection cable length cable material cable colors black-brown black-blue rising level = contact opened = contact closed Date of issue 26.06.97 LFL 2 - K - U - float type 38 Subject to reasonable modifcations due to technical advances. Copyright by Pepperl+Fuchs, Printed in Germany Pepperl+Fuchs Group · Tel.: Germany (6 21) 7 76-0 · USA (3 30) 4 25 35 55 · Singapore 7 79 90 91 · Internet http://www.pepperl-fuchs.com P R O C E S S A U T O M A T I O N Float Switch LFL2 Technical data Switching element Switching function max. switching voltage max. switching current Switching angle Process conditions Temperature LFL2-K-U-PVC LFL2-K-U-CSM Pressure (20 °C) Cylinder type Ball type Density ρ Cylinder type Ball type Material of the float Cable Material and lenght LFL2-K-U-PVC3 LFL2-K-U-PVC5 LFL2-K-U-CSM3 LFL2-K-U-CSM5 Application range PVC CSM Minimum length of the cable between mounting and float PVC CSM Micro switch with switching ball Changeover AC 250 V, DC 250 V 3 (1) A upper switching point +18°(± 6°), lower switching point +5°(±3°), against the horizontal -20 °C ... +70 °C (253 K ... 343 K) -20 °C ... +100 °C (253 K ... 373 K) ≤ 3 bar ≤ 2 bar ≥ 0.8 g/cm3 ≥ 0.6 g/cm3 PP (Polypropylene) PVC-cable, highly flexible (3 x 0.75 mm2 ), 3 m PVC-cable, highly flexible (3 x 0.75 mm2 ), 5 m CSM-cable (Hypalon), highly flexible (3 x 0.75 mm2 ), 3 m CSM-cable (Hypalon), highly flexible (3 x 0.75 mm2 ), 5 m preferably for water, waste water, and aggressive liquids preferably for most acids and lies ≥ 50 mm ≥ 100 mm Mounting from outside, sidewards from top with cable gland (cylinder type) with additional mass or float switch combination Accessories LFL-Z131 LFL-Z132 LFL-Z161 LFL-Z231 LFL-Z31 LFL-Z431 LFL-Z432 LFL-Z461 Ordering number Cable gland G1A, PVC Cable gland G1A, brass Cable gland G2A, PVC Lock nut, G1A, PVC Counter weight 2" Cable gland 1"NPT, PVC Cable gland 1"NPT, brass Cable gland 2"NPT, PVC Date of issue 26.06.97 This device may be used with any circuit, if this circuit complies with the connection values of the switching element. Subject to reasonable modifcations due to technical advances. Copyright by Pepperl+Fuchs, Printed in Germany Pepperl+Fuchs Group · Tel.: Germany (6 21) 7 76-0 · USA (3 30) 4 25 35 55 · Singapore 7 79 90 91 · Internet http://www.pepperl-fuchs.com 39