Flow Rate Monitoring - RFA Types 0 to 10 VDC Analog Output GEMS Sensors popularized the RotorFlow's paddlewheel design by combining high visibility rotors with solid-state electronics that are packaged into compact, panel mounting housings. They provide accurate flow rate output with integral visual confirmation...all with an unprecedented price/performance ratio. RFA Types feature a 0 to 10 VDC analog output which is proportional to flow rate. Specifications Wetted Materials Body Brass, 316 Stainless Steel or Polypropylene (Hydrolytically Stable, Glass Reinforced) Ceramic PPS Composite, Black1 Polysulfone Viton(R) (Alloy Bodies); Buna N (Polypropylene Body) Glass Reinforced Polypropylene Typical Applications FLOW SENSORS - ELECTRONIC Rotor Pin Rotor Lens O-Ring Low Flow Adaptor Operating Pressure, Maximum Brass or Stainless Steel Body 200 PSIG (13.8 bar) @ 70F (21C), 100 PSIG (6.9 bar) @ 212F (100C)2 Polypropylene Body 100 PSIG (6.9 bar) @ 70F (21C), 40 PSI (2.8 bar) Max. @ 180F (82C) Operating Temperature, Brass or Stainless Steel Body -20F to 212F (-29C to 100C) Polypropylene Body -20F to 180F (-29C to 82C) Electronics 150F (65C) Ambient Viscosity, Maximum 200 SSU Input Power 24 VDC, 10% Output Signal 0-10 VDC Analog Signal @ 1mA, Max. Current Consumption 25 mA, Max. Current Source Output, Max. 10 mA Accuracy See Table Below Electrical Termination 22 AWG PVC-Jacketed, 24 Cable. Color Coded: Red = +VDC; Black = Ground; White = Signal Output * Water Purification/Dispensing Systems * Chemical Metering Equipment * Lasers and Welders * Water Injection Systems * Semiconductor Processing Equipment * Chillers and Heat Exchangers Dimensions Polypropylene Bodies .64 (16.3 mm) .80 (20.3 mm) 2.50 (63.5 mm) 2.38 (60.5 mm) 3.06 (77.7 mm) Brass and Stainless Steel Bodies - .25 and .50 Ports Notes: 1. Standard on Stainless Steel bodies. 2. For higher pressure/temperature ratings stainless steel face plates are available. Consult factory. How To Order For standard configurations, specify Part Number based on desired body material and port size. Body Material Polypropylene Brass Stainless Steel - Stock Items. Port Size NPT 2.50 (63.5 mm) 3.01 (76.4 mm) Flow Ranges - GPM Low Range (Accuracy) Part Number Standard Range (Accuracy) Part Number .25 0.1 to 1.0 (7.0%) 170290 0.5 to 5.0 (7.0%) 170280 .50 1.5 to 12.0 (7.0%) 170291 4.0 to 20.0 (15.0%) 170281 .25 0.1 to 1.0 (7.0%) 170292 0.5 to 5.0 (7.0%) 170282 .50 1.5 to 12.0 (7.0%) 170293 4.0 to 20.0 (15.0%) 170283 .75 -- -- 5.0 to 30.0 (10.0%) 180407 1.00 -- -- 8.0 to 60.0 (15.0%) 182098 2.50 (63.5 mm) 9/16-18 0.1 to 1.0 (7.0%) 170295 0.5 to 5.0 (7.0%) 170285 .50 1.5 to 12.0 (7.0%) 170296 4.0 to 20.0 (15.0%) 170286 3.94 (100 mm) .75 -- -- 5.0 to 30.0 (10.0%) 182097 1.00 -- -- 8.0 to 60.0 (15.0%) 182099 1/4 PORTS = 80 (20.3 mm) 1/2 PORTS = 87 (22.1 mm) 2.32 (58.9 mm) Brass Bodies - .75 and 1.00 NPT Ports 1.06 (26.9 mm) 2.95 (74.9 mm) High Resolution Black Rotor PPS composite. Each of the six rotor arms is magnetized. A PTFE loaded bushing ensures long life. Don't Use - Replaced with RFO B&SS 1/4" &1/2" art F-6 Visit www.GemsSensors.com for most current information. 1/4" NPT-.64" (16.3 mm) RFA/RFI TYPES Visual Indicators - RFI Types This is RotorFlow in its most basic form -- a bright orange rotor turning with fluid flow. Simple, direct and reliable. Flow rate is estimated, or simply confirmed, by viewing the speed of the turning rotor. Either port may be used for incoming flow, and bayonet mounting lens is easily removed for quick cleanout. RFI Type RotorFlow sensors are easy to see, easy to install and easy to afford. Typical Applications * Visual flow confirmation on heat exchangers * Plastic injection molding equipment Specifications Brass, 316 Stainless Steel or Polypropylene (Hydrolytically Stable, Glass Reinforced) Ceramic High Visibility Orange, Molded Nylon Polysulfone Viton(R) (Brass Body); Buna N (Polypropylene Body) Glass Reinforced Polypropylene Rotor Pin Rotor Lens O-Ring Low Flow Adaptor Operating Pressure, Brass or Stainless Steel Body 100 PSIG (7 bar) @212F (100C) 200 PSIG (13.8 bar) Max. @ 70F (21C) 100 PSIG (6.9 bar) at 70F (21C), 40 PSI (2.8 bar) Max. @ 180F (82C) Polypropylene Body Operating Temperature, Brass or Stainless Steel Body Polypropylene Body -20F to 212F (-29C to 100C) -20F to 180F (-29C to 82C) Dimensions Polypropylene Bodies .64 (16.3 mm) 2.50 (63.5 mm) .80 (20.3 mm) 3.06 (77.7 mm) 1.37 (34.8 mm) .30 (7.6 mm) FLOW SENSORS - ELECTRONIC Wetted Materials Body Brass and Stainless Steel Bodies - .25 and .50 Ports Operating Principle .30 (7.6 mm) 1. As liquid passes through the RotorFlow body, the rotor spins at a rate proportional to flow. 2. RotorFlow Indicators may be mounted with flow entering either port. At low flow rates, performance is optimized by positioning ports at the top of the unit, in a horizontal plane. 2.50 (63.5 mm) How To Order 3.01 (76.4 mm) 1/4 PORTS = 80 (20.3 mm) 1/2 PORTS = 87 (22.1 mm) 1.37 (34.8 mm) Specify Part Number based on desired body material and port size. Body Material Polypropylene Brass Stainless Steel Flow Ranges - GPM Port Size NPT Low* Range Standard Range .25 0.1 to 1.0 0.5 to 5.0 155420 .50 1.5 to 12.0 4.0 to 20.0 155480 .25 0.1 to 1.0 0.5 to 5.0 142541 .50 1.5 to 12.0 4.0 to 20.0 142542 .75 -- 5.0 to 30.0 180392 2.50 (63.5 mm) 1.00 -- 8.0 to 60.0 181681 3.94 (100 mm) 9/16 - 18** 0.1 to 1.0 0.5 to 5.0 174596 .50 1.5 to 12.0 4.0 to 20.0 173138 .75 -- 5.0 to 30.0 181682 1.00 -- 8.0 to 60.0 181683 * With use of Low Flow Adapter supplied. See Page F-8 for more information. ** Straight thread with O-ring seal. Part Number Brass Body - .75 and 1.00 Ports 1.06 (26.9 mm) 2 (50.8 mm) High Visibility Orange Rotor Constructed of Molded Nylon for good general purpose compatibility with a wide range of fluids. Offers high visibility. - Stock Items. Visit www.GemsSensors.com for most current information. F-7 Easy Installation and Maintenance Panel Mounting A proper installation will enhance RotorFlow sensor performance. Install using standard pipe fitting tools; horizontal fluid lines are recommended. For further installation and maintenance recommendations, refer to one of the following instruction bulletins: RFO Types-Part Number 157258; RFI Types-Part Number 157259; RFS Types-Part Number 157261. Since their function is to monitor dynamic fluid flow, naturally the rotor will react to turbulence, pulsation, entrained air, and other flow anomalies induced in the flow stream by other process hardware. For optimum performance, install RotorFlow units where nominal flow conditions exist with ports located at the top. Incoming flow may be placed to either port; a minimum of 8 inches (20 cm) of straight pipe on the inlet side is required. When operating in the low flow range, the supplied Low Flow Adapter must be installed in the incoming port. 8 MIN Plastic Bodies. Two (2) mounting ears are provided at the body center line to receive #8 self-tapping screws to accommodate panel mounting of the plastic RotorFlow units. Note: ANSI T type 23 self-tapping screws are recommended. They may be replaced with standard machine screws if re-installation should be required. Brass and Stainless Steel Bodies. Two (2) mounting holes are provided on the body centerline, as shown below. #8-32UNC-2B screws are required for mounting. 2.50 (63.5 mm) (20 CM) 8 MIN (20 CM) 2.50 (63.5 mm) Incoming Flow Incoming Flow Low Flow Adapter Low Flow Adapter FLOW SENSORS - ELECTRONIC Except for straight-thread versions, RotorFlow sensors connect to piping via NPT mating thread forms.. The use of an appropriate thread sealant is necessary to assure a leak-tight connection. Permatex "No More Leaks(R)" or 2 wraps of Teflon(R) tape are the only sealants recommended for GEMS flow sensors. Straight-thread versions require an O-ring for sealing. 150 micron filtration is recommended. However, should foreign particles enter the RotorFlow sensor, accumulation is easily cleared by removing the lens from the body. The lens is removed by turning its 7/16 hex center hub 45 counter-clockwise with a standard socket wrench. To reinstall the lens, simply reverse the process. Pressure must be relieved from the system prior to sensor clean-out. O-rings should be lubricated prior to re-assembly. Low Flow Applications A low flow adapter is supplied with all Rotorflow units. It is used to produce accurate response at low flow rates. Install the adapter, as shown above, in the port selected for incoming flow. RotorFlow(R) Maintenance Kits Rebuild your RotorFlow(R) Sensors and Switches in less than 5 minutes with one of these kits. Includes: * Ceramic Rotor Pin * 6-Pole Magnetic Rotor with PPS/PTFE Bushing 2.50 (63.5 mm) * Buna N or Viton(R) O-Ring 2.50 (63.5 mm) * Polysulfone Lens Rotorflow(R) Type Line Size 1/4 & 1/2 3/4 & 1 Part Numbers Body Material O-Ring Material in Kit RFA/RFO/ RFS RFI Plastic Buna-N 155870 155872 Brass/SS (R) Viton 167364 166267 Brass/SS Viton(R) 182695 157187 - Stock Items. RotorFlow Sensor Special Capabilities are Yours for the Asking. (R) Gems caters to OEM needs with special configurations that go beyond the standards in this catalog. We can provide RotorFlow sensors with enhanced chemical compatibility, higher temperature and pressure capabilities, and alternate electrical terminations. Other Capabilities Available to OEMs: * Electrical outputs: Combined switch and frequency; transistor switching; 0-10 VDC analog. * Custom face plate (cast stainless steel face plate pictured) Buna N, Viton, EPDM, Silicon or Other Material O-Rings Polysulfone, Stainless Steel or Polypropylene Lens Panel Mounting 2.50 (63.5 mm) Tabs 2.50 (63.5 mm) PPS Composite with Teflon(R) or Nylon Loaded Bushing Long-Life Ceramic Rotor Pin RF-2500 Sensors Hydrolytically Stable Polypropylene, Stainless Steel or Brass We are committed to providing our customers with the product that best meets the requirements of their applications. Please call us and tell us what you need, and ask us about Swagelok(R) tube fittings, faceplate options, and 9/16 and 3/4 straight-thread versions. Call 800-378-1600 F-8 Visit www.GemsSensors.com for most current information.