FS-10798 Series - Externally Adjustable for Water, Oils and Gases Flow Rate Settings: Liquids: Infinite Adjustment between 0.5 GPM and 20.0 GPM ed pprov UL A on-Proof si Explo Air/Gases: See Gas Flow Adjustment Ranges below Port Size: 1/2 NPT Primary Construction Material: Brass or Stainless Steel Setting Type: Adjustable These externally adjustable switches are ideal for protecting machine tools from coolant flow failure, for protecting bearings from loss of lubricant or to assure proper air flow. They offer an infinite number of flow settings at pressures up to 1000 PSIG, with low pressure drop and precise repeatability. The adjusting vane is easily field adjustable using an ordinary flat-bladed screwdriver. The adjustment is set-screw-locked for tamper-free operation after field calibration. Shown with optional 1/2" conduit connector. Ro H S G Specifications U.L. Recognized -- File No. E31926 CSA Listed -- File No. LR30200 EM (R) S CO PLIAN M Dimensions T Ro H S G EM (R) S CO PLIAN M T With Wire Leads and Strain Relief Wetted Materials Housing Brass or 316 Stainless Steel Piston In Brass Housing Polysulfone for water; Brass for oil or air In Stainless Steel Housing FLOW ACTUATION ADJUSTMENT 3/4" (19.0 mm) 316 Stainless Steel Only Spring 316 Stainless Steel O-Ring Viton Other Wetted Parts Epoxy (R) FLOW SWITCHES Pressure Rating Operating 2" (50.8 mm) LOW ITCH-F SW OUT P/N MFRS. S/N MFRS. . TYPE NO NO. R. NT CO NO. STOCK SPEC. 5/8" (15.8 mm) MAX IN MIN 4-1/8" (104.7 mm) 1-1/4" (31.7 mm) 1/2" NPT BOTH PORTS 1000 PSIG (69 bar) Proof 2500 PSIG (172 bar) Burst 5000 PSIG (345 bar) Operating Temperature With Brass or S.S. Piston -20F to +300F (-29C to +148.9C) With Polysulfone Piston -20F to +225F (-29C to +107.2C) Repeatability 1% Maximum Deviation Set Point Accuracy 10% Maximum Set Point Differential 15% Maximum Switch* SPDT, 20 VA Inlet/Outlet Ports 1/2 NPT Electrical Termination No. 18 AWG, 24 L., Polymeric Lead Wires With 1/2 NPT Conduit Connector 1/2" (12.7 mm) 1-1/16" (26.9 mm) MAX. IN *See "Electrical Data" on Page X-5 for more information. Air/Gas Flow Adjustment Ranges Water or oil flow units should not be utilized for air/gas applications. The FS-10798 Gas Flow configuration utilizes a special dash-pot piston for reliability. The flow adjustment ranges are typical for air service. For other gases, the flow range will vary with the density of the gas. Please consult factory for more information. For 5 PSIG Line* For 100 PSIG Line 1 to 75 SCFM Approx. 3 to 160 SCFM Approx. * Minimum 5 PSI line pressure required. G-14 Visit www.GemsSensors.com for most current information. FS-10798 Series / p1of2 / 30-JUL-14 PISTON TYPE How It Works HERMETICALLY SEALED SPDT SWITCH 0.5 GPM PERMANENT MAGNET PISTON 2.5 PRESSURE DROP (PSID) SPRING Pressure Drop - Typical HOUSING VALVE ADJUSTMENT LOCKING SET SCREW 2.0 1.5 Part No. 25357 1.0 0.5 0 FLOW ADJUSTMENT VANE 0 0.5 1.0 2.0 FLOW RATE - GPM MAGNETIC SWITCH 10 GPM and 20 GPM PRESSURE DROP (PSID) 16 ADJUSTMENT An externally rotatable vane is positioned in the main flow path within the unit. The magnet carrier piston is located in a bypass flow chamber. Pressure differential, caused by flow around the adjusting vane, displaces the spring-biased piston which actuates a hermetically sealed SPDT reed switch within the unit. 12 Part No. 25358 8 4 0 0 5 10 15 20 25 How To Order - Standard Models Specify Part Number based on desired media, piston material and electrical termination. Housing Liquids Gases Part Numbers With 1/2 With Lead Conduit Wires Connector Materials Media Piston Brass (for Oils) Brass 61205 49073 FS-10798 switches are U.L. Approved for Class I, Division 2, Groups A, B, C, D hazardous locations. U.L. Approved -- File No. E183854 Standard Wiring Color Code 25357 25363 316 Stainless Steel 25358 25364 Wire Color Brass 25359 25365 Orange N.O. 316 Stainless Steel 25360 25366 Black Common Red N.C. Polysulfone (for Water) 30 FLOW RATE - GPM Tests conducted with units in horizontal position with water at +70F (21C). Data will vary slightly for vertically mounted units. FLOW SWITCHES Flow diagram with switch shown actuated. PISTON Notes: 1. Temperature changes will slightly affect the standard water or gas flow settings listed. Oil flow settings will vary with temperature and viscosity. 2. Use of 50 micron filtration is recommended. Terminal - Stock Items. FS-10798 Series / p2of2 / 30-JUL-14 Visit www.GemsSensors.com for most current information. G-15