عضویت 
ورود اعضا
راهنمای خرید
RFA Type Electronic Flow Sensor0 pages
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
FLOW SENSORS – ELECTRONIC
Wetted Materials
Body
Brass, 316 Stainless Steel or Polypropylene
t
(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 Bodyt 200 PSIG (13.8 bar) @ 70°F (21°C),
t
t 100 PSIG (6.9 bar) @ 212°F (100°C)2
Polypropylene Body
100 PSIG (6.9 bar) @ 70°F (21°C),
t
40 PSI (2.8 bar) Max. @ 180°F (82°C)
Operating Temperature,
Brass or Stainless Steel Bodyt -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:
t
Red = +VDC; Black = Ground; White = Signal Output
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
.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.t Standard on Stainless Steel bodies.
2.t 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
Port Size
NPT
2.50˝ (63.5 mm)
3.01˝ (76.4 mm)
Flow Ranges – GPM
.25˝
0.1 to 1.0 (±7.0%)
230206
0.5 to 5.0 (±7.0%)
.50˝
1.5 to 12.0 (±7.0%)
230207
4.0 to 20.0 (±15.0%)
230201
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
—
—
8.0 to 60.0 (±15.0%)
230214
2.50˝
(63.5 mm)
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
3.94˝
(100 mm)
.75˝
—
—
5.0 to 30.0 (±10.0%)
230213
—
—
8.0 to 60.0 (±15.0%)
230215
2.32˝ (58.9 mm)
230205
1.00˝
–
Stock Items.
Part
Number
9/16˝-18
Stainless
Steel
Standard Range
(Accuracy)
1.00˝
Brass
Part
Number
.25˝
Polypropylene
Low Range
(Accuracy)
1/4˝ PORTS =
80˝ (20.3 mm)
1/2˝ PORTS =
87˝ (22.1 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.
RFA Type / p1of2 / 30-JUL-14
1/4" NPT-.64" (16.3 mm)
