Gems Sensors & Controls RFA Specifications

FLOW SENSORS – ELECTRONIC

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, Black
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)
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.

1

2

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)

2.50˝ (63.5 mm)

3.06˝ (77.7 mm)

Brass and Stainless Steel Bodies - .25˝ and .50˝ Ports

.80˝ (20.3 mm)

2.38˝ (60.5 mm)

How To Order

For standard configurations, specify Part Number based on desired body material and
port size.

Flow Ranges – GPM

Part

Number

230206

230207

230209

230210

—

—

230211

230216

—

—

Standard Range

(Accuracy)

0.5 to 5.0 (±7.0%)

4.0 to 20.0 (±15.0%)

0.5 to 5.0 (±7.0%)

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%)

4.0 to 20.0 (±15.0%)

5.0 to 30.0 (±10.0%)

8.0 to 60.0 (±15.0%)

Visit www.GemsSensors.com for most current information.

F-6

Body

Material

Polypropylene

Brass

Stainless

Steel

– Stock Items.

Port Size

NPT

Low Range

(Accuracy)

.25˝ 0.1 to 1.0 (±7.0%)

.50˝ 1.5 to 12.0 (±7.0%)

.25˝ 0.1 to 1.0 (±7.0%)

.50˝ 1.5 to 12.0 (±7.0%)

.75˝ —

1.00˝ —

9/16˝-18 0.1 to 1.0 (±7.0%)

.50˝ 1.5 to 12.0 (±7.0%)

.75˝ —

1.00˝ —

Part

Number

230205

230201

230202

230203

230212

230214

230204

230208

230213

230215

1/4˝ PORTS =

2.50˝ (63.5 mm)

3.01˝ (76.4 mm)

80˝ (20.3 mm)
1/2˝ PORTS =
87˝ (22.1 mm)

2.32˝ (58.9 mm)

Brass Bodies – .75˝ and 1.00˝ NPT Ports

2.50˝

(63.5 mm)

3.94˝

(100 mm)

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.

RFA Type / p1of2 / 30-JUL-14