PISTON TYPE FS-380B Series - Compact Flow Switch 1/4˝ with Tube Fitting Flow Rate Settings: 0.25 GPM to 2.00 GPM Port Size: 1/2˝ NPT with 1/4˝ Tube Fitting Primary Construction Material: Brass Setting Type: Fixed These rugged inline flow switches feature unique dual connection ports that provide 1/2˝ NPT and 1/4˝ tub fittings. They require 100 micron filtration and are less susceptible to clogging than other inline flow switches. The FS-380B is an excellent choice for semicon cooling applications where simple design and reliable operation are required. Specifications U.L. Recognized File No. E31926 Brass Piston PPS Composite, Epoxy Spring 316 Stainless Steel O-Ring Fluorocarbon Cartridge O-Ring EPDM Cartridge Collet Polypropylene G EM ® S CO PLIAN M T Ro H S G Dimensions 1/2˝ NPT (2) CARTRIDGE ASS'Y: O-RING 1/4˝ TUBE INSERT ADAPTER EM ® S CO PLIAN M T inch (mm) 1/2˝ NPT (2) CARTRIDGE ASS'Y: COLLET 1.25 (31.75) (2) CARTRIDGE ASS'Y: INSERT 4.25 (107.95) 7/8˝ HEX. Pressure Drop - Typical Operating Pressure, Maximum 150 PSI (10 bar) Operating Temperature -20°F to +275°F (-28.8°C to +135°C) Set Point Accuracy ±20% Maximum Set Point Differential 20% Maximum Switch* SPST, 20VA, N.O. at no Flow Electrical Termination No. 22 AWG, 24˝ to 26˝ Polymeric leads 14 12 10 Spacing To prevent sensor to sensor magnetic field interference, follow the spacing guidelines below. 1 1/4˝ 2 3/8˝ 8 1.5 + 2.0 GPM SETTINGS 4 6 2 0 0 1 0.25 - 1.00 GPM SETTINGS 1 1/2˝ 2 13/64˝ 2 3 4 FLOW RATE - GPM 5 6 7 FLOW SWITCHES *See " Electrical Data " on Page X-5 for more information. PSI DROP Wetted Materials Housing Ro H S FLOW Gems FS-380 FLOW Gems FS-380 FLOW Gems FS-380 FLOW Gems FS-380 NOTE SWITCH ORIENTATION How To Order - Standard Models Specify Part Number based on flow settings. Brass Flow Settings GPM1 1/2˝ NPT Male with 1/4˝ Tube Fitting 0.25 248933 0.50 248934 1.00 248935 1.50 248936 2.00 248937 Note: 1. Flow settings are calibrated using water @ 70°F on increasing flow with units in horizontal position. Consult factory for other fluid compatibility. FS-380B Series / p1of1 / 07-DEC-15 Visit www.GemsSensors.com for most current information. G-9http://www.GemsSensors.com