Omega Engineering FSW-50 manual

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Table of contents for the manual

  • Page 1

    F S W - 5 0 Series Industrial Flow Switches www .omega.com e-mail: info@omega.com U ser ’ s Guide Shop online at Where Do I Find Ever ything I Need for Pr ocess Measurement and Contr ol? OM EGA…Of Course! Shop online at www .omega.com TEMPERA TURE   Thermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies   Wir[...]

  • Page 2

    Servicing Nor th America: USA: One Omega Drive, Box 4047 ISO 9001 Certified Stamford CT 06907-0047 Tel: (203) 359-1660 FAX: (203) 359-7700 e-mail: info@omega.com Canada: 976 Bergar Laval (Quebec) H7L 5A1 Tel: (514) 856-6928 FAX: (514) 856-6886 e-mail: info@omega.ca For immediate technical or application assistance: USA and Canada: Sales Service: 1-[...]

  • Page 3

    12 General Description The OMEGA ® FSW-50 Series Flow Switches feature a 15A SPDT switch and an internal screw adjustment which provides continuous switch point adjustment while in operation in-line. Multiple drag disks are supplied with each unit to provide incremental switch point adjustment. Their non- magnetic design makes them ideal for appli[...]

  • Page 4

    2 Available Drag Disks The FSW-50 Series Switches come with three different drag disks. The drag disks are sized as follows: DRAG DISK SIZE # 1 .5" dia. # 2 .83" dia. # 3 1.0" dia. The following table lists flow adjustment limits for various pipe sizes relative to Model No. and drag disk size. The moment arm (see Step 3 of FLOW RANGE[...]

  • Page 5

    Relay Switch: SPDT 15A @ 125 or 250 Vac, 10,000,000 operations median Nominal Sensitivity (% Flow Change to Activate Switch): Approximately 10% @ upper end of range; approximately 30% @ lower end of range Differential Pressure Drop Across Unit: (Under normal operating conditions) 1"-3" pipe, less than 0.5 PSI; 4"-10" pipe, negli[...]

  • Page 6

    4 9 ASSEMBLY WARNING THE FSW-50 SERIES SWITCHES EMPLOY AN EXTERNAL SEAL SHAFT (A) A FLEXIBLE ELASTOMER DIAPHRAGM SEAL (B) AND AN INTERNAL FEED THRU SHAFT OR SWITCH ACTUATING ARM (D). ALL THREE ELEMENTS ARE ASSEMBLED AND LOCKED IN PLACE WITH LOCTITE ADHESIVE. TO PREVENT RUPTURE OF SEAL AND LEAKAGE INTO SWITCH AREA, IT IS CRITICALLY IMPORTANT THAT TO[...]

  • Page 7

    8 5 Plumber’s tools such as pipe wrenches are not recommended. If possible, use a ‘Rigid’ type wrench where the smooth jaws closely fit the hexagon section. NOTE Thus: 1. Teflon tape thread and tighten the plastic bushing into the pipe or tank fitting. 2. Teflon tape thread and tighten the switch into the PLASTIC bushing by applying a wrench [...]

  • Page 8

    6 7 All FSW-50 Series Switches are factory set at the lower end of the flow range, i.e., the adjusting screw is set at the low flow COUNTERCLOCKWISE position. NOTE Figur e 2: Wiring Schematic for power applied to load when the flow is greater than set point (power to load interrupted when flow decreases to below set point). Switch Point Adjustment [...]