FLOW SWITCHES G G E E M M S S C C O O FS-930 Series Oil Flow Switch, Compensates For Viscosity Change In Fluids Flow Rate Settings: 0.1 GPM to 1.0 GPM Port Size: 1/4 NPT Primary Construction Material: Brass Setting Type: Fixed RoHS A unique, patented piston design assures accuracy within 20% over a full range of viscositiesfrom 40 to 2000 SSU. Ideal for use in applications where liquids of different RoHS viscosities are blended or for use in lubrication systems where oil flow monitoring is U.L. Recognized critical at start-ups. Switch compensates for viscosity changes automatically. Each unit File No. E31926 is factory preset, using 300 SSU oil, for actuation at specified flow rates. Specifications Wetted Materials Housing Brass Piston Brass Spring 316 Stainless Steel O-Ring Viton Other Wetted Parts Epoxy Pressure Rating Dimensions Operating, Maximum 1000 PSIG (69 bar) 1/4 (6.3 mm) Proof 2500 PSIG (172 bar) Burst 5000 PSIG (345 bar) Operating Temperature -20F to + 300F (-29C to +148.9C) 9/32 DIA. (7.1 mm) MTG. HOLES (2) Repeatability 1% Maximum Deviation** Set Point Accuracy 10% 4-1/8 Set Point Differential 15% Maximum (104.7 mm) 2-3/8 (60.3 mm) Switch* SPDT, 20 VA Inlet/Outlet Ports 1/4 NPT 1/2 (12.7 mm) Electrical Termination No. 18 AWG, 24 L., Polymeric Lead Wires Explosion-Proof Approvals U.L. Approved for Class I, Division 2, Groups A, B, 1-1/4 (31.7 mm) C, D. Also available with FM approved, explosion 27/32 (21.4 mm) proof junction box for Class I, Division 1, Group D 1/4 NPT BOTH PORTS G-11b ill hazardous locations. U.L. Approved File No. E183854, RoHS 3/4 * See Electrical Data on Page X-5 for more information (19.0 mm) ** Reference at 300 SSU set point. 1 (25.4 mm) 1-3/4 (44.4 mm) Electrical Connection, 1/2 NPT Conduit 1/2 (12.7 mm) G-16 Visit www.GemsSensors.com for most current information. M M P P UL Approved Explosion-Proof L L I I A A N N T TPISTON TYPE How To Order Standard Models Pressure Drop Typical 5 Specify Part Number based on flow setting. Flow Setting Part 4 GPM, 10% Numbers Part No. 51590 3 0.10 51582 0.25 51586 2 Part No. 51582 Part No. 51598 0.50 51590 1 0.75 51594 0 1.00 51598 0.1 0.5 1.0 1.5 FLOW RATE - GPM Notes: Tests conducted with units in vertical position (lead wires up) with water at 1. Flow settings are calibrated in a vertical position (lead wires up) with 300 SSU oil. Set points will +70F (21C). be maintained within 20% of settings in a liquid viscosity range of 40 to 2,000 SSU. 2. Use of 50 micron filtration is recommended. Stock Items. FS-930 switches are U.L. Approved for Class I, Division 2, Groups A, B, C, D hazardous locations. They are also available with FM-approved, explosion- proof junction box for Class I, Division 1, Group D hazardous locations. Units must be assembled completely at GEMS. U.L. Approved File No. E183854 Standard Wiring Color Code Wire Color Terminal Orange N.O. Black Common Red N.C. G-17 Visit www.GemsSensors.com for most current information. PRESSURE DROP (PSID) FLOW SWITCHES