Master Catalog — Gems Sensors & Controls - F-7

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
Wetted Materials
Body
	
Rotor Pin
Rotor
Lens
O-Ring
Low Flow Adaptor
Operating Pressure,
Brass or Stainless Steel Body
	
Polypropylene Body
	
Operating Temperature,
Brass or Stainless Steel Body
Polypropylene Body

Ro H S

100 PSIG (7 bar) @212°F (100°C)
200 PSIG (13.8 bar) Max. @ 70°F (21°C)
100 PSIG (6.9 bar) at 70°F (21°C),
40 PSI (2.8 bar) Max. @ 180°F (82°C)
-20°F to 212°F (-29°C to 100°C)
-20°F to 180°F (-29°C to 82°C)

G

EM

®

S CO PLIAN
M

T

Ro H S
G

EM

®

S CO PLIAN
M

T

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

Brass, 316 Stainless Steel or Polypropylene
(Hydrolytically Stable, Glass Reinforced)
Ceramic
High Visibility Orange, Molded Nylon
Polysulfone
Viton® (Brass Body); Buna N (Polypropylene Body)
Glass Reinforced Polypropylene

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.

RFI-RotorFlow / p1of1 / 30-JUL-14

Visit www.GemsSensors.com for most current information.

F-7
Master Catalog — Gems Sensors & Controls

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