F-6
FLOW SENSORS – ELECTRONIC
Visit www.GemsSensors.com for most current information. RFA Type / p1of2 / 30-JUL-14
Body
Material
Port Size
NPT
Flow Ranges – GPM
Low Range
(Accuracy)
Part
Number
Standard Range
(Accuracy)
Part
Number
Polypropylene .25˝ 0.1 to 1.0 (±7.0%) 230206 0.5 to 5.0 (±7.0%) 230205
.50˝ 1.5 to 12.0 (±7.0%) 230207 4.0 to 20.0 (±15.0%) 230201
Brass
.25˝ 0.1 to 1.0 (±7.0%) 230209 0.5 to 5.0 (±7.0%) 230202
.50˝ 1.5 to 12.0 (±7.0%) 230210 4.0 to 20.0 (±15.0%) 230203
.75˝ — —5.0 to 30.0 (±10.0%) 230212
1.00˝ — —8.0 to 60.0 (±15.0%) 230214
Stainless
Steel
9/16˝-18 0.1 to 1.0 (±7.0%) 230211 0.5 to 5.0 (±7.0%) 230204
.50˝ 1.5 to 12.0 (±7.0%) 230216 4.0 to 20.0 (±15.0%) 230208
.75˝ — —5.0 to 30.0 (±10.0%) 230213
1.00˝ — —8.0 to 60.0 (±15.0%) 230215
3.06˝ (77.7 mm)
2.50˝ (63.5 mm)
.64˝ (16.3 mm)
3.06" (77.7 mm)
2.50" (63.5 mm) .25" (6.3 mm)
.80˝ (20.3 mm)
2.38˝ (60.5 mm)
1/4" NPT-2.01" (51.1 mm)
1/2" NPT-2.21" (56.1 mm)
3/4" NPT-2.51" (63.8 mm)
1/4" NPT-.64" (16.3 mm)
1/2" NPT-.70" (17.8 mm)
3/4" NPT-.70" (17.8 mm)
Don't Use - Replaced with RFO B&SS 1/4" &1/2" art
3.01˝ (76.4 mm)
2.50˝ (63.5 mm)
2.32˝ (58.9 mm)
1/4˝ PORTS =
80˝ (20.3 mm)
1/2˝ PORTS =
87˝ (22.1 mm)
2.50˝
(63.5 mm)
3.94˝
(100 mm)
2.95˝
(74.9 mm)
1.06˝
(26.9 mm)
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)
Rotor Pin Ceramic
Rotor PPS Composite, Black1
Lens Polysulfone
O-Ring Viton® (Alloy Bodies); Buna N (Polypropylene Body)
Low Flow Adaptor Glass Reinforced Polypropylene
Operating Pressure, Maximum
Brass or Stainless Steel Body 200 PSIG (13.8 bar) @ 70°F (21°C),
100 PSIG (6.9 bar) @ 212°F (100°C)2
Polypropylene Body 100 PSIG (6.9 bar) @ 70°F (21°C),
40 PSI (2.8 bar) Max. @ 180°F (82°C)
Operating Temperature,
Brass or Stainless Steel Body -20°F to 212°F (-29°C to 100°C)
Polypropylene Body -20°F to 180°F (-29°C to 82°C)
Electronics 150°F (65°C) 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
Notes:
1. Standard on Stainless Steel bodies.
2. For higher pressure/temperature ratings stainless steel face plates are available. Consult factory.
Dimensions
Polypropylene Bodies
Brass and Stainless Steel Bodies - .25˝ and .50˝ Ports
Brass Bodies – .75˝ and 1.00˝ NPT Ports
How To Order
For standard configurations, specify Part Number based on desired body material and
port size.
High Resolution
Black Rotor
PPS composite. Each of the six
rotor arms is magnetized. A PTFE
loaded bushing ensures long life.
– Stock Items.
Typical Applications
• Water Purification/Dispensing Systems
• Chemical Metering Equipment
• Lasers and Welders
• Water Injection Systems
• Semiconductor Processing Equipment
• Chillers and Heat Exchangers
