Pepperl+Fuchs offers a wide range of float switches: Application - suitable for use up to Ex-area zone 1 - mercury-free switching element - nominal voltage, 8 V per EN 60947-5-6 (NAMUR) - connected through a transformer isolated barrier (i.e. KFD2-SR...) - mercury-free switching element - usable as a contact output - connects directly to a PLC input, no interface is necessary - contact 250 VAC/VDC, 3 A maximum switching current - contact 250 VAC (150 VDC), 4 A maximum switching current - usable as a contact output - connects directly to a PLC input, no interface is necessary Float type Design 1 CK Cylinder Type - for small mounting diameters - mounting through G1 hole Proximity switch BK Ball type - high buoyancy for fluids with low density 2 Electrical Design Micro switch with switching element 1 proximity switch N per 2-wire EN 60947-5-6 (NAMUR) - connected with a transformer isolated barrier suitable for use in Ex-area zone 1 Z1 Z0 3 Normally open contact Normally closed contact - for DC applications 6 V DC … 60 V DC Mercury switching contact WÖ WS Normally open contact Normally closed contact - for AC applications 250 V AC with switching element 2 Micro switch or switching element 3 Mercury switching contact U AC, DC - for AC and DC applications 250 V AC/150 V DC Your Order Number: LFL Cable Housing Material Pepperl+Fuchs Level Control Products Float Switches – Simple and Economical Quality and Standards Pepperl+Fuchs offers a wide range of level control products with hydrostatic pressure sensors, magnet-operated immersion probes, pipeline probes, conductive probes, vibration forks, float switches and electrodes for field measurements. Our selection of level control devices offers a solution for all your measurement requirements. Float switches are one of the most reliable and economical methods for monitoring simple level control applications. All products comply with national (DIN) an international (EN; IEC) standards. Our ISO 9001 quality assurance system insures product quality. Cable length 3 - 3 meters 5 - 5 meters 10 - 10 meters PVC - resists waste water and aggressive liquids PUR - resists fuel and greasy liquids CSM - resists most acids and lyes Horn Controls pumps or values with one float switch Alarms min./max. limit control Controls pumps or valv with float switches Access ories Additional Accessories Accessories float switches Thread Material Order-No. Cable gland: G1A G1A G2A PVC brass PVC LFL-Z 131 LFL-Z 132 LFL-Z 161 Lock nut: G1A PVC LFL-Z 231 Counterweight: for G2 LFL-Z 32 Pepperl+Fuchs offers signal conditioners, transformer isolated barriers, displays, connection boxes and a variety of special cables. For a complete listing of our accessories, refer to our catalog “Field Devices for Process Automation” or our CD-ROM. The Pepperl+Fuchs Group USA Headquarters Pepperl+Fuchs Inc. · 1600 Enterprise Parkway Twinsburg, Ohio 44087-2202 · Cleveland-USA Tel. (330) 4 25 35 55 · Fax (330) 4 25 93 85 e-mail: [email protected] Worldwide Headquarters Pepperl+Fuchs GmbH · Königsberger Allee 87 68307 Mannheim · Germany Tel. +49 621 7 76-0 · Fax +49 621 7 76-10 00 http://www.pepperl-fuchs.com e-mail: [email protected] Asia Pacific Headquarters Pepperl+Fuchs Pte Ltd. · P+F Building 18 Ayer Rajah Crescent · Singapore 139942 Tel. (65) 7 79 90 91 · Fax (65) 8 73 16 37 e-mail: [email protected] Subject to reasonable modifications due to technical advances · Copyright PEPPERL+FUCHS · Printed in Germany · Part. No. 48 297 02/00 02 PROCESS AUTOMATION Applica tions Product Overview Float Switches