180392 - GEMS SENSORS - Datasheet.Directory

F-6

FLOW SENSORS – ELECTRONIC

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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%) 170290 0.5 to 5.0 (±7.0%) 170280

.50˝ 1.5 to 12.0 (±7.0%) 170291 4.0 to 20.0 (±15.0%) 170281

Brass

.25˝ 0.1 to 1.0 (±7.0%) 170292 0.5 to 5.0 (±7.0%) 170282

.50˝ 1.5 to 12.0 (±7.0%) 170293 4.0 to 20.0 (±15.0%) 170283

.75˝ — —5.0 to 30.0 (±10.0%) 180407

1.00˝ — —8.0 to 60.0 (±15.0%) 182098

Stainless

Steel

9/16˝-18 0.1 to 1.0 (±7.0%) 170295 0.5 to 5.0 (±7.0%) 170285

.50˝ 1.5 to 12.0 (±7.0%) 170296 4.0 to 20.0 (±15.0%) 170286

.75˝ — —5.0 to 30.0 (±10.0%) 182097

1.00˝ — —8.0 to 60.0 (±15.0%) 182099

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 Purication/Dispensing Systems

• Chemical Metering Equipment

• Lasers and Welders

• Water Injection Systems

• Semiconductor Processing Equipment

• Chillers and Heat Exchangers

F-7

FLOW SENSORS – ELECTRONIC

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Body

Material

Port Size

NPT

Flow Ranges – GPM Part Number

Low* Range Standard Range

Polypropylene .25˝ 0.1 to 1.0 0.5 to 5.0 155420

.50˝ 1.5 to 12.0 4.0 to 20.0 155480

Brass

.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

1.00˝ — 8.0 to 60.0 181681

Stainless

Steel

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

.80˝ (20.3 mm) .30˝ (7.6 mm)

1.37˝ (34.8 mm)

3.06˝ (77.7 mm)

2.50˝ (63.5 mm)

.64˝ (16.3 mm)

3.01˝ (76.4 mm)

2.50˝ (63.5 mm)

1.37˝

(34.8 mm)

1/4˝ PORTS =

80˝ (20.3 mm)

1/2˝ PORTS =

87˝ (22.1 mm)

.30˝ (7.6 mm)

2.50˝

(63.5 mm)

3.94˝

(100 mm)

2˝

(50.8 mm)

1.06˝

(26.9 mm)

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 ow conrmation on heat exchangers • Plastic injection molding equipment

Speciﬁcations

Wetted Materials

Body Brass, 316 Stainless Steel or Polypropylene

(Hydrolytically Stable, Glass Reinforced)

Rotor Pin Ceramic

Rotor High Visibility Orange, Molded Nylon

Lens Polysulfone

O-Ring Viton® (Brass Body); Buna N (Polypropylene Body)

Low Flow Adaptor Glass Reinforced Polypropylene

Operating Pressure,

Brass or Stainless Steel Body 100 PSIG (7 bar) @212°F (100°C)

200 PSIG (13.8 bar) Max. @ 70°F (21°C)

Polypropylene Body 100 PSIG (6.9 bar) at 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)

Operating Principle

1. As liquid passes through the RotorFlow body, the rotor spins at a rate proportional

to ﬂow.

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.

How To Order

Specify Part Number based on desired body material and port size.

* With use of Low Flow Adapter supplied. See Page F-8 for more information.

** Straight thread with O-ring seal.

– Stock Items.

Dimensions

Polypropylene Bodies

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

Brass Body – .75˝ and 1.00˝ Ports

High Visibility

Orange Rotor

Constructed of Molded Nylon

for good general purpose

compatibility with a wide range

of uids. Offers high visibility.

RFA/RFI TYPES

F-8

FLOW SENSORS – ELECTRONIC

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Rotorﬂow® Type O-Ring

Material

in Kit

Part Numbers

Line

Size

Body

Material

RFA/RFO/

RFS RFI

1/4˝ & 1/2˝ Plastic Buna-N 155870 155872

Brass/SS Viton®167364 166267

3/4˝ & 1˝ Brass/SS Viton®182695 157187

8˝ MIN

(20 CM)

Low Flow

Adapter

Incoming

Flow

2.50˝ (63.5 mm)

8˝ MIN

(20 CM)

Low Flow

Adapter

Incoming

Flow

2.50˝ (63.5 mm)

Easy Installation and Maintenance

A proper installation will enhance RotorFlow sensor performance. Install using

standard pipe ﬁtting tools; horizontal ﬂuid lines are recommended. For further

installation and maintenance recommendations, refer to one of the following

instruction bulletins: RFO Types–Part Number 157258; RFI Types–Part Number

157259; RFS Types–Part Number 157261.

Since their function is to monitor dynamic ﬂuid ﬂow, naturally the rotor will react to

turbulence, pulsation, entrained air, and other ﬂow anomalies induced in the ﬂow

stream by other process hardware. For optimum performance, install RotorFlow units

where nominal ﬂow conditions exist with ports located at the top. Incoming ﬂow may

be placed to either port; a minimum of 8 inches (20 cm) of straight pipe on the inlet

side is required. When operating in the low ﬂow range, the supplied Low Flow Adapter

must be installed in the incoming port.

Except for straight-thread versions, RotorFlow sensors connect to piping via NPT

mating thread forms.. The use of an appropriate thread sealant is necessary to assure

a leak-tight connection. Permatex “No More Leaks®” or 2 wraps of Teﬂon® tape are

the only sealants recommended for GEMS ﬂow sensors. Straight-thread versions

require an O-ring for sealing.

150 micron ﬁltration is recommended. However, should foreign particles enter the

RotorFlow sensor, accumulation is easily cleared by removing the lens from the body.

The lens is removed by turning its 7/16˝ hex center hub 45° counter-clockwise with

a standard socket wrench. To reinstall the lens, simply reverse the process. Pressure

must be relieved from the system prior to sensor clean-out. O-rings should be

lubricated prior to re-assembly.

Low Flow Applications

A low ﬂow adapter is supplied with all Rotorﬂow units. It is used to produce accurate

response at low ﬂow rates. Install the adapter, as shown above, in the port selected

for incoming ﬂow.

RotorFlow® Sensor Special Capabilities

are Yours for the Asking.

Gems caters to OEM needs with special conﬁgurations

that go beyond the standards in this catalog. We can

provide RotorFlow sensors with enhanced chemical

compatibility, higher temperature and pressure

capabilities, and alternate electrical terminations.

Other Capabilities Available to OEMs:

• Electricaloutputs:Combinedswitchandfrequency;

transistor switching; 0-10 VDC analog.

• Customfaceplate

(cast stainless steel

face plate pictured)

Panel Mounting

Plastic Bodies. Two (2) mounting ears are provided

at the body center line to receive #8 self-tapping

screws to accommodate panel mounting of the plastic

RotorFlow units. Note: ANSI T type 23 self-tapping

screws are recommended. They may be replaced with

standard machine screws if re-installation should be

required.

Brass and Stainless Steel Bodies. Two (2) mounting

holes are provided on the body centerline, as shown

below. #8-32UNC-2B screws are required for mounting.

RotorFlow® Maintenance Kits

Rebuild your RotorFlow® Sensors and Switches in less

than 5 minutes with one of these kits.

Includes:

 • CeramicRotorPin

 • 6-PoleMagneticRotorwithPPS/PTFEBushing

 • BunaNorViton® O-Ring

 • PolysulfoneLens

– Stock Items.

Polysulfone, Stainless Steel

or Polypropylene Lens

Buna N, Viton, EPDM,

Silicon or Other Material

O-Rings

PPS Composite

with Teﬂon® or Nylon

Loaded Bushing

Panel Mounting

Tabs

Long-Life

Ceramic

Rotor Pin

Hydrolytically Stable

Polypropylene, Stainless

Steel or Brass

We are committed to providing our customers with the

product that best meets the requirements of their

applications. Please call us and tell us what you need,

and ask us about Swagelok® tube ﬁttings, faceplate

options, and 9/16˝ and 3/4˝ straight-thread versions.

Call 800-378-1600

RF-2500 Sensors