F-6
Flow Rate Monitoring – RFA Types
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
Operating Pressure, Maximum
Operating Temperature,
Viscosity, Maximum
Input Power
Output Signal
Current Consumption
Current Source Output, Max.
Accuracy
Electrical Termination
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.
Polypropylene
0 to 10 VDC Analog Output
Body
Rotor Pin
Rotor
Lens
O-Ring
Low Flow Adaptor
Brass or Stainless Steel Body 200 PSIG (13.8 bar) @ 70°F (21°C),
Polypropylene Body
Brass or Stainless Steel Body -20°F to 212°F (-29°C to 100°C)
Polypropylene Body
Electronics
Stainless
Material
– Stock Items.
Brass
Body
Steel
Port Size
9/16˝-18
1.00˝
1.00˝
NPT
.25˝
.50˝
.25˝
.50˝
.75˝
.50˝
.75˝
1.5 to 12.0 (±7.0%)
1.5 to 12.0 (±7.0%)
1.5 to 12.0 (±7.0%)
0.1 to 1.0 (±7.0%)
0.1 to 1.0 (±7.0%)
0.1 to 1.0 (±7.0%)
Low Range
(Accuracy)
Brass, 316 Stainless Steel or Polypropylene
(Hydrolytically Stable, Glass Reinforced)
Ceramic
PPS Composite, Black
Polysulfone
Viton
Glass Reinforced Polypropylene
100 PSIG (6.9 bar) @ 70°F (21°C),
40 PSI (2.8 bar) Max. @ 180°F (82°C)
-20°F to 180°F (-29°C to 82°C)
150°F (65°C) Ambient
200 SSU
24 VDC, ±10%
0-10 VDC Analog Signal @ 1mA, Max.
25 mA, Max.
10 mA
See Table Below
22 AWG PVC-Jacketed, 24˝ Cable. Color Coded:
Red = +VDC; Black = Ground; White = Signal Output
100 PSIG (6.9 bar) @ 212°F (100°C)
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®
(Alloy Bodies); Buna N (Polypropylene Body)
Flow Ranges – GPM
Number
Visit www.GemsSensors.com for most current information.
170290
170291
170292
170293
170295
170296
Part
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1
4.0 to 20.0 (±15.0%)
4.0 to 20.0 (±15.0%)
5.0 to 30.0 (±10.0%)
8.0 to 60.0 (±15.0%)
4.0 to 20.0 (±15.0%)
5.0 to 30.0 (±10.0%)
8.0 to 60.0 (±15.0%)
0.5 to 5.0 (±7.0%)
0.5 to 5.0 (±7.0%)
0.5 to 5.0 (±7.0%)
Standard Range
(Accuracy)
2
Number
170280
170281
170282
170283
180407
182098
170285
170286
182097
182099
Part
Don't Use - Replaced with RFO B&SS 1/4" &1/2" art
Typical Applications
• Water Purification/Dispensing Systems
• Chemical Metering Equipment
• Lasers and Welders
• Water Injection Systems
• Semiconductor Processing Equipment
• Chillers and Heat Exchangers
Dimensions
Polypropylene Bodies
Brass and Stainless Steel Bodies - .25˝ and .50˝ Ports
Brass Bodies – .75˝ and 1.00˝ NPT Ports
High Resolution
Black Rotor
PPS composite. Each of the six
rotor arms is magnetized. A PTFE
loaded bushing ensures long life.
2.50˝ (63.5 mm)
3.01˝ (76.4 mm)
2.50˝ (63.5 mm)
3.06˝ (77.7 mm)
(63.5 mm)
(100 mm)
2.50˝
3.94˝
1/4" NPT-.64" (16.3 mm)
.64˝ (16.3 mm)
1/4˝ PORTS =
80˝ (20.3 mm)
1/2˝ PORTS =
87˝ (22.1 mm)
(26.9 mm)
1.06˝
(74.9 mm)
2.95˝
2.38˝ (60.5 mm)
2.32˝ (58.9 mm)
.80˝ (20.3 mm)