Large Size - Alloys Side Mounting Switches Solve the Problem of Inaccessible Tank Tops & Bottoms LEVEL SWITCHES - SINGLE POINT These units solve the problem of point level sensing in tanks with inaccessible tops or bottoms, or at intermediate locations in larger tanks. Operation is positive and dependable. The float pivots with changing liquid level, displacing a shuttle which magnetically actuates a hermetically sealed switch within the unit. Installation is through the tank side at the detection point. Typical Installation ved UL Appro roof -P n io s Explo LS-2050 Series - Brass and Buna N LS-2050 Series - All-Stainless Steel LS-52100 Series - All Stainless Steel General purpose materials designed to provide reliable service in oils and water. Ultimate strength: for pressures to 900 PSIG and temperatures to 300F (148.9C). Explosion-proof models available. Rugged, all-stainless steel unit offers broad chemical compatibility at temperatures to 300F (148.9C). Explosion-proof models available. Dimensions LS-2050 Series 1/2" NPT APPROX. ACTUATION LEVEL CONTACTS TRANSFER ON ASCENDING FLUID LEVEL (1/4" OF CL) 5/8" (15.9 mm) 1" NPT UP APPROX. ACTUATION LEVEL CONTACTS TRANSFER ON ASCENDING FLUID LEVEL 1" NPT 3-7/8"1/8" (98.4 mm) APPROX. ACTUATION LEVEL CONTACTS TRANSFER ON ASCENDING FLUID LEVEL 5-1/16" (128.6 mm) 1" NPT 1" (25.4 mm) 2-3/8"1/8" (60.3 mm) 7/8" (22.2 mm) 1-3/8" (34.8 mm) 3-7/16" (87.3 mm) LS-52100 Series 1" (25.4 mm) 3-5/8" APPROX. (92.0 mm) 3-1/4" (82.5 mm) APPROX. 4-1/8" APPROX. (104.8 mm) 2" DIAMETER BALL FLOAT 5-9/32" (134.1 mm) APPROX. Approximate de-actuation level, nominal (based on a liquid specific gravity of 1.0). * Switch Mounting dimensions are the same as shown on the LS-2050 Series drawing (far left). Explosion-Proof Versions CSA or FM Approved versions are available in all-stainless steel configurations only. Typical Example (P/N 55690 Shown): Top View 1/2" NPT PORTS 3-1/2" DIA. REF. For Remote Alarms - See Page E-29 * Adjustable Volume * Indoor Outdoor * Solid-State 13/16" REF. Side View A-16 5-1/16" (128.6 mm) Visit www.GemsSensors.com for most current information. FLOAT TYPE Common Specifications Electrical Termination: No.18 AWG, 24 L., Polymeric Lead Wires. LEVEL SWITCHES - SINGLE POINT Approvals: LS-2050 Series Switches are U.L. Recognized - File No. E45168 and are CSA Listed. Explosion-proof units are approved for Class I, Division 1, Group D hazardous areas. Mounting Attitude: Horizontal, 15. Performance LS-2050 Series LS-52100 Series Brass Mounting/Buna-N Float All-Stainless Steel Operating Temperature Water: to +180 F (82.2 C) Oil: -40 F to +250 F (-40 C to +121 C) -40 F to +300 F (-40 C to +148.9 C) Pressure, PSIG Max. @ 70 F 150 900 Min. Liquid Sp. Gr. .8 .9 Switch Differential in Liquid 1/2" Minimum 500 .85 Approximately 3/4" How To Order - Select Part Number based on specifications required. Materials Series Number LS-2050 LS-52100 Part Numbers Stem and Mounting Float Other Wetted Brass Buna N 316 Stainless Steel, Beryllium Copper, Teflon(R), Ceramic 316 Stainless Steel 316 Stainless Steel Stainless Steel, Teflon(R), Ceramic 316 Stainless Steel 304 Stainless Steel 430 Stainless Steel, Teflon(R), Ceramic Switch 1 SPDT, 20 VA Standard Versions With Bellows (Details Below) Explosion-Proof 30288 -- -- FM 30290 175650 55690 2, 4 48068 -- -- SPST, 100 VA, N.C.2, 4 48069 -- -- SPDT, 20 VA SPST, 100 VA, N.O. SPDT, 20 VA 52100 -- 121753 SPST, 100 VA, N.O.3 116971 -- -- SPST, 100 VA, N.C. 116972 -- 3 Notes 1. See "Electrical Data" on Page X-5 for more information. 2. Not CSA Approved. 3. Not U.L. Recognized or CSA Approved. 4. UL Resistive Rated -- - Stock Items. Visit www.GemsSensors.com for most current information. A-17