Omega FD6003 Manual de usuario

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FD6001, FD6002, FD6003

Ultrasonic Flowmeter

with Totalization

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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: (203) 359-1660 FAX: (203) 359-7700

e-mail: [email protected]

Canada: 976 Bergar

Laval (Quebec) H7L 5A1, Canada

TEL: (514) 856-6928 FAX: (514) 856-6886

e-mail: [email protected]

For immediate technical or application assistance:

U.S.A. and Canada: Sales Service: 1-800-826-6342 / 1-800-TC-OMEGA®

Customer Service: 1-800-622-2378 / 1-800-622-BEST®

Engineering Service: 1-800-872-9436 / 1-800-USA-WHEN®

Mexico: En Espan˜ol: (001) 203-359-7803 e-mail: [email protected]

FAX: (001) 203-359-7807 [email protected]

Servicing Europe:

Benelux: Postbus 8034, 1180 LA Amstelveen, The Netherlands

TEL: +31 (0)20 3472121 FAX: +31 (0)20 6434643

Toll Free in Benelux: 0800 0993344

e-mail: [email protected]

Czech Republic: Frystatska 184, 733 01 Karviná, Czech Republic

TEL: +420 (0)59 6311899 FAX: +420 (0)59 6311114

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

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

TEL: +33 (0)1 61 37 2900 FAX: +33 (0)1 30 57 5427

Toll Free in France: 0800 466 342

e-mail: [email protected]

Germany/Austria: Daimlerstrasse 26, D-75392 Deckenpfronn, Germany

TEL: +49 (0)7056 9398-0 FAX: +49 (0)7056 9398-29

Toll Free in Germany: 0800 639 7678

e-mail: [email protected]

United Kingdom: One Omega Drive, River Bend Technology Centre

ISO 9002 Certified Northbank, Irlam, Manchester

M44 5BD United Kingdom

TEL: +44 (0)161 777 6611 FAX: +44 (0)161 777 6622

Toll Free in United Kingdom: 0800-488-488

e-mail: [email protected]

OMEGAnet®Online Service Internet e-mail

omega.com [email protected]

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.

1-1

PART 1 - TABLE OF CONTENTS

Description Pages

Quick Start Installation 1.2-1.3

Operating Theory 1.4

Product Limitations 1.5

Model Number Matrix 1.6

Specifications 1.7

Transducer Installation 2.1-2.5

Pre-Installation Functional Test 3.1-3.2

Transmitter Installation 3.3-3.4

Power Source Jumper Settings 3.5

Electrical Connections 3.5-3.6

Power Up and Configuration 3.7

Keypad Operations 3.8-3.19

Trouble Shooting 3.20-3.21

Appendix

Fluid Sound Speed Conversions

Ductile Iron Pipe Data

Cast Iron Pipe Data

Steel, SS, PVC Pipe Data

FPS to GPM Conversion Chart

1-2

This manual contains detailed operating instructions for all

aspects of the FD6000 instruments. The following condensed

instructions are provided to assist the operator in getting

the instrument started up and running as quickly as

possible. This pertains to basic operation only. If specific

instrument features are to be used or if the installer is

unfamiliar with this type of instrument, refer to the

appropriate section in the manual for complete details.

1. TRANSDUCER LOCATION

A. In general, select a mounting location on the piping

system with a minimum of 10 pipe diameters (10 X the

pipe inside diameter) of straight pipe upstream and 5

straight diameters downsteam. See Table 2.1 for

additional configurations.

B. On horizontal pipe, select a position that is between 2

and 4 o’clock on the pipe, with 12 o’clock representing

the top. Installations on vertical pipe should be made

in an area where the flow moves from bottom to top—

ensuring a full pipe of liquid.

2. PIPE PREPARATION AND TRANSDUCER

MOUNTING

A. The piping surface, where the transducers are to be

mounted, needs to be clean and dry. Remove loose

scale, rust and paint to ensure satisfactory acoustical

bonds.

B. Loosely wrap the appropriate length of strap around

the pipe at the location determined in Step 1. Refer to

Figure 1.1 for proper orientation of the transducer. For

greatest accuracy, point the cable of the transducer in

the primary flow direction.

C. Apply a liberal amount of couplant onto the transducer

face. Place the transducer onto the pipe ensuring

square and true placement. If an RTV type of

couplant (requiring curing time) was utilized, allow

sufficient time for curing before applying power to the

instrument or moving the cable.

PART 1 - QUICK START

General

FLOW

Figure 1.1

Top View of Pipe

Transducer Cable

1-3

3. TRANSDUCER/POWER CONNECTIONS

A. Do not attempt to add additional cable to the

transducers.

B. Refer to the DIAGRAMS in Figure 1.2 for proper power

and transducer connections. Verify proper jumper

selections are in place for the power source. See

Figure 3.4.

4. INITIAL SETTINGS AND POWER UP

A. Adjust the GAIN control [R13] to 1/4 turn from full

counter-clockwise rotation.

B. Apply power to the instrument.

C. If the pipe is full of a flowing liquid, the flow meter

signal strength will increase from a zero reading.(press

the 2nd FUNCT key, then press SIGNAL STR). If the

Signal Strength does not increase to a minimum of

000125 counts, gradually turn the GAIN control [R13]

clockwise until the indication is between 000125 and

000200. (Do not over adjust this setting as ambient

noise can influence readings.)

D. If possible, turn off the flow in the pipe. Verify that

SIGNAL STR. is lower than 000100. If SIGNAL STR.

is greater than 000100, verify that the sensor/

transmitter are not located near electrically noisy

components. (VFDs, inverters, motors, power relays,

etc) Verify that transducer connections are proper

and secure. If the SIGNAL STR. remains greater than

000100, consult the Dynasonics Factory for

assistance. It is possible that the GAIN control [R13] is

set too far clockwise and ambient noise is influencing

the readings. Turn the control counter-clockwise until

the signal strength decreases to below 000070 counts.

E. If the instrument passes steps 4C and 4D, the basic

setup of the instrument is complete.

PART 1 - QUICK START

IMPORTANT!

In order to successfully complete the configuration of

the FD6000 Series flow meter, the transducer must be

mounted on a pipe which is full of a flowing liquid. It

is normal to have a zero reading and no signal

strength indication with empty pipes or zero flow rate.

Figure 1.2

Transducer (top picture)

and Power (bottom picture)

Connections

1-4

The FD6000 Series flowmeter is designed to

measure the flow of liquids and slurries in full-pipe

closed systems. The transmitter is field configured to

measure flow on a variety of pipes and liquids. The

standard product is typically used on pipe sizes

ranging from 1 - 120 inch [ 25 - 1524 mm ] pipe I.D.

(With the small pipe transducer option, the pipe size

range is 0.25 - 1 inch [ 6 - 25 mm]). A variety of liquid

applications can be accommodated: sewage,

sludges, concrete, mining slurries, dredging, etc.

Because the transducers are non-contacting and

have no moving parts, the flow meter is not affected

by system pressure, fouling or wear. Standard

transducers are rated to 250°F [121°C]. Optional

high temperature transducers are rated to operate to

300°F [149°C].

The basic principle of operation is the measurement

of the frequency shift “Doppler” of a reflected

ultrasonic signal from discontinuity in the flowing

liquid. In theory, these discontinuities can be virtually

any amount of suspended bubbles, solids, or

interfaces caused by turbulent flow. In practice the

degree to which this can be reliably accomplished is a

function of the sensitivity and frequency of the

transducer and associated transmitter. The design

requires greater than 100 PPM of suspended

solids or bubbles over 100 microns in size. The

PART 1 - GENERAL

General

Operating Theory

transducer which generates and receives the

ultrasonic signal supplies the data to the transmitter.

The transmitter processes the signal and provides an

analog and pulse output for velocity indicating and

volumetric totalizing. In addition, the transmitter

contains a signal strength indicator which determines

satisfactory operation.

1-5

The flowmeter is typically used as a unidirectional

meter and is most accurate when the transducer is

mounted in the orientation detailed in this manual.

But, the meter will measure flow in both directions —

although flow direction will not be indicated or

totalized properly. The flowmeter will operate from

signals returned from turbulence alone (such as

installation directly at pump discharges or

downstream from elbows and valves); however, it

should be noted that turbulence may vary with flow

rates and result in non-linear results. The

repeatability of the device is not dependent on most

process liquids.

The flowmeter is designed to measure the flow of

liquids and slurries, as long as a small, homogeneous

quantity of entrained air or suspended solids are

present. Without the presence of continuing supply of

air or solids, the transmitted pulses are not reflected

back to the transducer and the indicator will indicate

zero flow.

The signal strength value will indicate a value greater

than 100 counts when a minimum size and

concentration of suspended particles are available for

a reliable flow reading (100 micron and 100 PPM

minimum) and the liquid is moving at least 0.1 FPS

[0.03 MPS]. Most water-based liquids can be

measured from a factory calibrated flowmeter.

However, liquids with a heavy solids level (i.e. over

2% by volume), liquids with sound speeds that vary

from water (see Appendix - Liquid Sound Speed list)

or pipes with liners may have to be field calibrated.

This is done by adjusting the Calibration value on the

keypad to make the indicator agree with a known flow

velocity or a mathematically corrected fluid velocity.

All standard flow meters are calibrated to measure

the flow of a water-based liquid at 25 degrees C. If

the scale range or units need to changed, the process

to do so is covered in detail later in this manual.

PART 1 - GENERAL

Measuring Limits

1-6

The FD6000 Series employs modular construction

and provides electrical safety for the operator. The

display face contains voltages no greater than 9 Vdc

and any exposed metal work is electrically connected

to Earth Ground. The display face swings open to

allow access to user connections.

The serial number and complete model number of

your meter is located on the inside of the transmitter

front cover. Should technical assistance be required,

please provide OMEGA’s Customer Service

Department with this information. Email:

[email protected].

PART 1 - GENERAL

Serial Number

1-7

PART 1 - GENERAL

(Std) 115 or 230 VAC 50/60 Hz ±10% and 12 VDC. (Opt)

Power consumption less than 12 VA.

NOTES

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