Vortex Flow Meters

Toll Free: 888-5RACINE

RNL Series Insertion Liquid Flow Meter

racinevortex.com

TM

• Applications Boiler feed water and condensate Cooling tower Pool and water park Chemical processing Municipal water treatment Ground water monitoring Irrigation systems • Pipe sizes 4" (102 mm) and higher• Very low pressure drop

2 Tel: 262-639-6770

Operating Principle

Flow Meter Selection Specifications

Measured Liquids

Velocity Range 2 to 18 FPS (0.6 to 5.5 MPS)

Accuracy ±2% of reading

Repeatability 0.5% of reading

Process Temperature Maximum 300 °F (148 °C)

Ambient Temperature -20 °F to +110 °F (-28 °C to +43 °C)Limits

Operating Pressure -5 to 250 PSIG (-0.3 to 17 BARg)

Input Power 10 to 30 VDC

Signal Output 4-20 mA (two-wire loop)

Enclosure NEMA 4X (IP66) polycarbonate

Maximum Viscosity 10 centistokes - consult factory for higher viscosity

Display Flow rate and total w/programmable keypad

An everyday example of a vortex shedding phenomenon is a flag waving in the breeze: the flag waves due to the vortices shed by wind moving across the flagpole. Within the flow meter, as flowing liquid moves across the strut or “bluff bar”, vortices are also shed but on a smaller scale. The meter transmits an ultrasonic beam through the vortex pattern downstream of the strut. As vortices are shed, the carrier wave of the ultrasonic signal modulates. The modulation of the carrier wave is measurable and proportional to the number of vortices shed. Digital processing enables the vortices to be counted, and this value is converted into a velocity. Software converts velocity into a volumetric flow rate, in units of measure selected by the operator.Racine vortex flow meters utilize the smallest strut in the industry, which allows for high sensitivity; superior performance at low flow rates and low pressure drop.

FLOW

Racine vortex offers a sophisticated software program to aid in the flow meter selection process. The program accounts for system pressure and temperature, as well as media density, viscosity and specific gravity. Select from a complete list of Metric and English engineering units, using default or customized reference standards for pressure and temperature. The software may be downloaded at no charge from racinevortex.com.

Receiving TransducerSmall Strut Shed Vortices

Transmitting Transducer

3Fax: 262-639-2267

Flow Ranges*

Part Number Construction

MAXIMUMMINIMUM MAXIMUMMINIMUMNOMINAL PIPE SIZE

in. (mm)

GPM LPM

*Consult RACINE Flow Meter Selection Software for temperature and pressure conditions other than those listed here, available at racinevortex.com

Based on water at 1 cSt at 73 ºF schedule 40 pipe

78

176

313

490

705

960

1253

1586

1958

4.0 (102)

6.0 (152)

8.0 (203)

10.0 (254)

12.0 (305)

14.0 (356)

16.0 (406)

18.0 (457)

20.0 (508)

705

1586

2820

4406

6344

8635

11279

14275

17623

295

667

1185

1855

2668

3634

4743

6003

7411

2669

6004

10675

16679

24015

32687

42696

54037

66710

Part Number: L SNaa Stem Length 12) 12" Stem 24) 24" Stem 36) 36" Stem 1S) 12" Stem + Stand-off1 2S) 24" Stem + Stand-off1 3S) 36" Stem + Stand-off1

bbb Mounting Style/ Cable Length 150) 2" x 150# Flange2

151) 2" x 150# Flange + 10' cable3

152) 2" x 150# Flange + 25' cable3

153) 2" x 150# Flange + 50' cable3

300) 2" x 300# Flange2

301) 2" x 300# Flange + 10' cable3

302) 2" x 300# Flange + 25' cable3

303) 2" x 300# Flange + 50' cable3

NPT) 2" MNPT Fitting2

NP1) 2" MNPT Fitting + 10' cable3

NP2) 2" MNPT Fitting + 25' cable3

NP3) 2" MNPT Fitting + 50' cable3

D50) DN 50 Flange2,4

D51) DN 50 Flange4 + 10' cable3

D52) DN 50 Flange4 + 25' cable3

D53) DN 50 Flange4 + 50' cable3

Flow Meter MaterialS) 316SS (standard)

d O-ring Material 1) Viton® (standard) 3) Ethylene Propylene

EnclosureD) Digital display of flow rate and total. NEMA 4X (IP66) polycarbonate

1 Additional physical barrier between sensor head and transmitter2 Integral mount transmitter 3 Remote mount transmitter 4 Flange to DIN 2527 specifications

Racine Insertion Liquid StemLength

Mounting Style MeterMaterial

O-ringMaterial

EnclosureApprovals

RNL Series Insertion Flow Meters for Liquid

a a b b b d

ApprovalsN) General Purpose

N D

D

R NL- 0001 09/11

4

Racine is a trademark of Racine Federated Inc.Viton is a registered trademark of DuPont Performance Elastomers.© 2011 Racine Federated Inc., all rights reserved.

Toll Free (US & Canada): 888-5RACINE (572-2463)

TM

Stem Length Selection Procedure

Dimensional DrawingsInches (mm)

8635 Washington Avenue Racine, WI 53406-3738 USAinfo@racinevortex.com

5.75(146.0)

3.93(99.8)

7.00(177.8)

BFully

Retracted

AStem Length

MeasuringWindow {

Before purchasing a RNL insertion liquid flow meter, it is necessary to calculate the stem length required for a particular piping system. In order to complete this calculation, some knowledge of the piping system must be known. The variables required are:

• ½ Internal pipe diameter A

• Pipe wall thickness B

• Length of the valve stack C

Using this information and referring to the picture below,a minimum stem length can be determined.

Minimum Stem Length Required = A + B + C

RNL36 36.0 (914) 44.6 (1133)

RNL24 24.0 (610) 32.6 (828)

RNL12 12.0 (305) 20.6 (523)

Model Dim. A Dim. B

Insertion hardware kits available withflanged or NPT connections.

2" Weld-O-Let

6" PipeNipple

MeasuringWindow{

CValve Stack

2" Full PortBall Valve

2" Flange

BPipe Wall

¼" PressureSensor Port

A½ Internal

Pipe Diameter