LEVEL SWITCHES SINGLE POINT Small Size Engineered Plastics LS-3 Series Offers High Reliability, Compact Size and Low Costs in NPT, Straight and Metric Threads Ideal for shallow tanks or restricted spaces, or for any low-cost, high volume use. LS-3 Series are available in FDA compliant materials, consult GEMS for details. Polysulfone Float Polypropylene Float Polypropylene Float (Hollow) (Solid) FDA For water based liquids, with Features a low specific gravity With Polypropylene stem and limited use in oils and chemicals. float offering broad chemical float, switch offers broad chemical compatibility. compatibility. Buna N Float ALL-PVDF New 3/4 Polypropylene Float FDA Wetted materials of construction comply with FDA food contact regulations. Ideal for oils and fuels. Stem and float of corrosion- See next page for details. resistant PVDF for ultra-pure applications. Common Specifications Approvals: U.L. Recognized File No. E45168 CSA Listed File No. 30200. CE Declaration Available Upon Request. NSF materials are Standard 61 compliant. For NSF approved level switches contact Gems. Switch SPST: 20 VA, 120-240 VAC. Units are shipped N.O. unless otherwise specified. Selectable, N.O. or N.C., by inverting float on unit stem. Dimensions 1 Float Models only Alternate Mountings 3/8-16 G1/8 M12x 1.75 1/8 NPT Straight Thread 1/8-28 BSP Straight Thread 17/32 (13.4 mm) 1/2 HEX 3/8 16 L = Actuation Level 1 1/2 HEX .475 REF. (see chart below) .390 REF315 REF. (12mm) L 1 (9.9mm) (8.0mm) 2-3/32 (53.2 mm) 1/2 5/8 9/16 1-9/16 .14 .14 HEX .20 1 HEX HEX (39.7 mm) (2.6mm) (3.6mm) (5.1mm) (25.4 mm) Electrical 1 DIA Lead Wires Cable Cable Termination (25.4 mm) A-2 Visit www.GemsSensors.com for most current information.FLOAT TYPE How To Order Select Part Number based on specifications required. Stem and Float Float Actuation Min. Liquid Pressure Max. Operating Mounting Electrical Part Number 1 Mounting Material Material Dia. Level Sp. Gravity 70F (21C) Temperature Type Termination 3/4 50 psi -40F to +225F Polysulfone Polysulfone 1 .75 1/8 NPT Lead Wires 42295 (19.0 mm) (3 bar) (-40C to +107C) 1/8 NPT Lead Wires 142505 -40F to +225F (-40C to +107C) 3/8-16 Lead Wires 171517 Polypropylene 13/16 50 psi 2 Polypropylene 1 .60 (Hollow) (20.6 mm) (3 bar) G 1/8-28 Cable 171518 -40F to +176F (-40C to +80C) M12x1.75 Cable 189739 1/8 NPT Lead Wires 209475 3 Polypropylene 3 Polypropylene 3/8-16 Lead Wires 209455 -40F to +225F NSF Std. C-2 13/16 50 psi (Hollow) 1 .60 (-40C to +107C) (Kynar float (20.6 mm) (3 bar) G 1/8-28 Lead Wires 209460 NSF Std. C-2 retaining clip) M12x1.75 Lead Wires 209465 1/8 NPT Lead Wires 116826 -40F to +150F 150 psi (-40C to +66C) 3/8-16 Lead Wires 171514 9/16 1 .90 (10 bar) (14.3 mm) -40F to +176F Polypropylene 2 68F (20C) Polypropylene M12x1.75 Cable 189787 (-40C to +80C) (Solid) -40F to +212F Lead Wires 7/16 3/4 .95 Atmospheric 1/8 NPT 201540 (-40C to +100C) or Cable (11.1 mm) -40F to +250F (oil) 1/8 NPT Lead Wires 162745 (-40C to +121C oil ) 13/16 150 psi 1 .45 (20.6 mm) (10 bar) -40F to +176F (water) Nylon Buna M12x1.75 Cable 189786 (-40C to +80C water ) -40F to +250F (oil) 11/16 150 psi 3/4 .85 1/8 NPT Lead Wire 177818 (-40C to +121C oil ) (17.5mm) (10.3 bar) -40F to +250F Teflon Jacketed 1/2 50 psi PVDF PVDF 1 .86 1/8 NPT 173250 (-40C to +121C) Lead Wires (12.7 mm) (3 bar) Stock Items. Notes: 1. Based on a liquid specific gravity of 1.0. 2. All Polypropylene units carry a Kynar retaining clip. Accessories Available in OEM Quantities: Jam Nut, Gaskets, and Slosh Shields. 3. NSF C-2 Approved unit, for water use only. 3/4 Diameter Floats for Tiny Tanks Our smallest LS-3 yet Reliable alternative to more expensive electronic sensors. Actual Size Fits smaller devices. Less material, lower cost. Proprietary float more buoyant than competitors. Small yes, but with BIG performance. No other 3/4 float switch on the market matches our LS-3 specs. These units are ideal for potable water, medical devices and other compact appliances, such as printers. Gems proprietary float enables use in lighter-than-water fluids. NSF/ FDA compliant models available at your request. Please consult factory. Dimensions Specifications 17/32 (13.4 mm) Wetted Material 1/8 NPT Stem and Mounting 1/2 HEX P/N 201540 Polypropylene with Kynar retaining clip P/N 177818 Nylon L 1 2-3/32 Float (53.2 mm) P/N 201540 Polypropylene 1-9/16 1 (39.7 mm) (25.4 mm) P/N 177818 Buna-N Operating Temperature, Max. L = Actuation Level 1 3/4 DIA P/N 201540 212F (100C) (see chart above) (19 mm) P/N 177818 250F (121C) oil, -40F to +176F (-40C to +80C) Order by Part Numbers: Pressure, Max. P/N 201540 Atmospheric LS-3, 3/4 Polypropylene Float: 201540 P/N 177818 150 psi (10.3 bar) LS-3, 3/4 BunaN Float: 177818 A-3 Visit www.GemsSensors.com for most current information. LEVEL SWITCHES SINGLE POINT