FLOW SWITCHES FS-550 Series High Pressure, Metal Paddle Switch Pipe Line Size: 1-1/4 and Up Primary Construction Material: Stainless Steel or Brass U.L. Recognized Setting Type: Fixed File No. E31926 CSA Listed File No. LR30200 Standard FS-550 switches sense liquid flow in either direction to monitor flow/no-flow and LR22666 conditions. They are supplied in two paddle lengths. The paddle is trimmed during FM Approved File No. 0A8A3.AE installation to permit switch actuation at the desired flow rate. As flow increases in and 1H3A2.AX a pipe, the paddle of the switch pivots to move out of the liquid path, producing less than 3 PSIG of pressure drop regardless of pipe size. Specifications Wetted Materials Housing Brass or 316 Stainless Steel Paddle 302 Stainless Steel Spring 316 Stainless Steel Other Wetted Parts Ceramic and Teflon Operating Pressure, Maximum 2000 PSIG (138 bar) Pressure Drop 3 PSIG (0.2 bar) Maximum Dimensions Operating Temperature -30F to + 300F (-34.4C to + 148.9C) 1/2 NPT Set Point Accuracy 25% Switch* SPDT, 20 VA 3-7/16 Repeatability 5% (87.2 mm) Electrical Termination No. 18 AWG, 24 L., Polymeric Lead Wires *See Electrical Data on Page X-5 for more information. 1-11/16 Standard Actuation and De-actuation Set Points 1 NPT (42.8 mm) The Table below indicates paddle lengths which achieve switch actuation for specific flow rates. Approximate pipe line sizes are marked on paddle. 1 5-1/2 (25.4 mm) Pipe Size Pipe Line Sizes 1-1/4 1-1/2 -3 (139.7 mm) (SHORT) (LONG) Marked PADDLE 1-1/4 1-1/2 2 2-1/2 3 4 PADDLE at Paddle Cut-Off Approximate Actuation and (De-Actuation) Flow Rates Point GPM Water Short 1-1/4 5 (3) 13 (8) 22 (15) 29 (22) 1 Paddle Unit (25.4 mm) 1-1/2 15 (11) 28 (21) 38 (30) 2 22 (15) 27 (20) 48 (38) Long 2-1/2 21 (14) 40 (26) 52 (39) Paddle Unit 3 31 (20) 45 (32) 4 39 (25) FS-550 switches are U.L. Approved for Class I, Division 2, Groups A, B, C, D hazardous areas. All flow rate tests for the above table were conducted with the switch installed in a standard T fitting. For calculation of flow rates in pipe sizes larger than 5, a flow They are also available as FM-approved velocity of approximately 0.5 ft. per sec. actuates the switch with a full length (5 ) when used with GEMS Junction Boxes paddle. The paddle can be trimmed to achieve different actuation points. which are explosion-proof for Class I, Division 1, Groups B, C, D, E, F, G hazardous How To Order Standard Models locations. LOAD Select switch type, paddle length and housing material, then specify adjacent part VAC Using GEMS SAFE-PAK number. SAFE-PAK Relays and barriers, 1-1/2 2 Part Numbers Switch Paddle Housing Switch 2-1/2 these switches provide 3 Type Length Material Operation FS-550 automatic ofl w/no Standard 3-Pin J-Box SWITCH ofl w interlock and Brass 29609 56730 HAZARDOUS are intrinsically-safe Long AREA SPDT N.O. 316 S.S. 29608 56729 without explosion-proof Standard or housing and piping. Brass 30641 66914 Unit N.C. Short U.L. Approved File No. E183854 316 S.S. 30640 61189 Note: The FS-550 Switch is not recommended for use with 1 plastic tees. G-24 Visit www.GemsSensors.com for most current information. 1-1/2 1 2 2-1/2 3 X-ON Electronics Largest Supplier of Electrical and Electronic Components Click to view similar products for Gems Sensors manufacturer: Other Similar products are found below : 22445 155425 129660 PS71-40-4MNZ-C-HC 28196 43760 70821 142700 35651 42295 27A1D0 01801 165570 57143 156268 70822 29608 87480 142505 PS41-20-4MNB-C-FL18 155481 26717 165840 43765 160450 173931-C PS41-20-4MNB-C-HC 70824 01755 79990 129661 1200HGG3002A3UA PS41-30-4MNB-C-FL18 01701 131100 30288 140620 01950 155421 116826