Omega Products FP6500 Installation Manual

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FP6500 SERIES

Insertion Pa d d l ewheel Flow Sensor

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User’s Guide

Servicing North America:

U.S.A.: One Omega Drive, P.O. Box 4047

ISO 9001 Certified

Stamford, CT 06907-0047
TEL: [phone] FAX: [phone]
e-mail: [e-mail]

Canada: 976 Bergar

Laval (Quebec) H7L 5A1, Canada
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e-mail: [e-mail]

For immediate technical or application assistance:

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TELEX: 996404 EASYLINK: 62968934 CABLE: OMEGA

Mexico: En Espan˜ol: [phone]-7803 e-mail: [e-mail]

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Servicing Europe:

Benelux: Postbus 8034, 1180 LA Amstelveen, The Netherlands

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Toll Free in Benelux: 0800 0993344
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Czech Republic: Frystatska 184, 733 01 Karviná, Czech Republic

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Toll Free: 0800-1-66342 e-mail: [e-mail]

France: 11, rue Jacques Cartier, 78280 Guyancourt, France

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Toll Free in France: 0800 466 342
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Germany/Austria: Daimlerstrasse 26, D-75392 Deckenpfronn, Germany

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United Kingdom: One Omega Drive, River Bend Technology Centre

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M44 5BD United Kingdom
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Toll Free in United Kingdom: 0800-488-488
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It is the policy of OMEGA Engineering, Inc. to comply with all worldwide safety and EMC/EMI
regulations that apply. OMEGA is constantly pursuing certification of its products to the European New
Approach Directives. OMEGA will add the CE mark to every appropriate device upon certification.

The information contained in this document is believed to be correct, but OMEGA accepts no liability for any
errors it contains, and reserves the right to alter specifications without notice.
WARNING: These products are not designed for use in, and should not be used for, human applications.

GENERAL INFORMATION

The FP6500 Series are adjustable depth insertion paddle­wheels that come in brass or 316 stainless models to fit
3” to 48” pipe. Installation fittings are standard 1-1/2"
NPT. Fittings such as saddles and weldolets may be
purchased locally or from Omega.

Ruby bearings and a non-drag Hall-effect sensor give these
meters the widest flow range of any of the paddlewheel
types. A sensor detects the passage of miniature mag­nets in the six rotor blades. The resulting square-wave
signal can be sent for hundreds of feet over unshielded
cable without a transmitter and connected directly to
many PLC’s and other controls without any additional
electronics.

SPECIFICATIONS

Sensor

Materials Tube

Rotor

Shaft

Bearings

Flow Range

Accuracy

Maximum Temperature

Maximum Pressure

Insertion Force

Pipe Size

Fitting Size

Power

Cable

Hall Effect Sensor, 12 Vdc
current sinking pulse

Brass or 316 SS

PVDF

Nickel-bound tungsten carbide
(zirconia ceramic optional)

Ruby

0.3 to 30 ft/sec (0.1 to 9 m/s)

+1.5% of full scale

200˚ F (93˚ C)

200 psi (14 bar)

0.44 x pressure in pipe

3” - 48” (50 - 1200mm)

1-1/2” NPT

5-24 Vdc, 1.5 mA

#22 AWG 3-con, 18’ (6m);
Maximum cable run 2,000’ (650m)

FEATURES

Housing screw (connect ground to one)

Cable-seal strain relief

Rugged cast aluminum housing

Compression nut

Adapter fitting with 1-1/2" NPT threads

Rotor housing

Removable jewel bearings
Rotor

10

X Dia.

5

X Dia.

FLOW

INSTALLATION

"D"

These ow sensors are not recommended
for installation downstream of the boiler

feedwater pump where installation fault
may expose the meter to boiler pressure
and temperature. Maximum recommended
temperature is 200ºF.

Piping. For best results, the FP6500 should be installed
with at least ten diameters of straight pipe upstream and five
downstream. Certain extreme situations such as partially­opened valves are particularly difficult and may require fifteen
diameters upstream (See Straight Pipe Recommendations).

Immersion. The FP6500-Series standard sensors are not
designed for continuous underwater operation.

Fitting Installation. FP6500 sensors come with a 1-1/2”
male NPT pipe thread adapter fitting. Any fitting that provides
the matching NPT female thread may be used. Installation
procedure compensates for fitting height differences. Cut a
minimum 1-3/4” hole in the pipe. If possible, measure the
wall thickness and write it down for use in depth setting.
Then install the threaded fitting (saddle, weldolet, etc.) on
the pipe.

Meter Installation. Loosen the compression nut so that
the adapter slides freely. Pull the meter fully upward and
finger-tighten the compression nut. Using a thread sealant,
install the adapter in the pipe fitting. Do not overtighten.
Now loosen the compression nut, lower the meter to the
appropriate depth setting (see diagram and instructions
below). Be sure flow is in the direction of the arrow on the
housing. Tighten compression nut fully.

Depth Setting. It is important for accuracy that the sensor
be inserted to the correct depth into the pipe.

Horizontal is the preferred installation orientation, since it
improves low-flow performance slightly and avoids problems
with trapped air. Bottom, top, and vertical pipe installations
are all acceptable if required by the piping layout. See Full
Pipe Recommendations.

POSITIONING THE METER

Fair (unacceptable if

air is present)

Best

compression nut

threaded adapter fitting

1. In Table 1, find Dimension C for your sensor model
and pipe size.

2. Subtract wall thickness of your pipe (Table 2) to
find Dimension D.

3. Measuring from the outside of the pipe to the joint in
the housing, as shown in the diagram, adjust the sensor
to Dimension D and hand tighten compression nut.

4. Align the conduit housing with the centerline of the pipe,
as shown below. Be sure the arrow on the housing
points in the direction of flow.

strain relief

FLOW

Fair (unacceptable if uid

contains sediment)

5. Check Dimension D one more time.

6. Tighten the compression nut fully.