Omega Products FMG200 Installation Manual

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User’s Guide

FMG200 SERIES

Low-Flow Magnetic Flow Meter

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
TEL: [phone] FAX: [phone]
e-mail: [e-mail]

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

®

TELEX: 996404 EASYLINK: 62968934 CABLE: OMEGA

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

FAX: [phone] [e-mail]

Servicing Europe:

Benelux: Postbus 8034, 1180 LA Amstelveen, The Netherlands

TEL: [phone] FAX: [phone]
Toll Free in Benelux: 0800 0993344
e-mail: [e-mail]

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

TEL: [phone] FAX: [phone]
Toll Free: 0800-1-66342 e-mail: [e-mail]

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

TEL: [phone] FAX: [phone]
Toll Free in France: 0800 466 342
e-mail: [e-mail]

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

TEL: [phone] FAX: [phone]
Toll Free in Germany: 0800 639 7678
e-mail: [e-mail]

United Kingdom: One Omega Drive, River Bend Technology Centre

ISO 9002 Certified

Northbank, Irlam, Manchester
M44 5BD United Kingdom
TEL: [phone] FAX: [phone]
Toll Free in United Kingdom: 0800-488-488
e-mail: [e-mail]

OMEGAnet®Online Service Internet e-mail

omega.com i n f o @ o m e g a . c o m

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.

TABLE OF CONTENTS

General Information

Features, Specications, Flow Range ................................................................................................. Page 1

Installation and Operation

Mounting, Connections, Grounding, Display, Outputs, Mounting Diagrams ........................................

Connections and Grounding

Flow Meter, Display Board, Ideal Grounding with Metallic Piping, Standard Grounding ..................... Page 3

Settings

Set-Up .................................................................................................................................................. Page 4

Troubleshooting

Problems, Probable Causes, Things to Try ......................................................................................... Page 5

TABLES, DIAGRAMS & CHARTS

. Page 2

Features ................................................................................................................................................ Page 1

Specications ........................................................................................................................................ Page 1

Flow Range ........................................................................................................................................... Page 1

Mounting Diagrams ............................................................................................................................... Page 2

Standard Connections and Grounding Diagrams ................................................................................. Page 3

Settings Diagrams ................................................................................................................................. Page 4

Troubleshooting Problems, Probable Causes, Things to Try ................................................................ Page 5

GENERAL INFORMATION

The FMG200 is a small electromagnetic low-ow owmeter with

chemically-resistant plastic wetted parts and platinum electrodes
suitable for use with a variety of chemicals. Capable of measur-

ing pulsating ows from diaphragm-type metering pumps, it is

designed primarily for electrically-conductive chemical injection

applications. The 1/4” and 3/8” sizes monitor maximum ows
of 1 and 3 gallons per minute (or 4 and 11 L/min), respectively.
Barb or NPT ttings are available, and must be designated at

FEATURES

Captive plastic cover screw (4)
(mounting screws inside)

Backlit LCD display
(16 characters x 2 lines)

Keypad switches, tactile

Polycarbonate housing

Power cord

Connector (2)
for optional output cables

Connector (2)
for sensor cables

SPECIFICATIONS*

time of order.

The FMG200 is 115 Vac, 60 Hz powered and includes a rate and

total display as well as a variety of outputs. For continuous trans-

mission of a ow signal, there is a 4-20 mA output, a 0-5 volt signal,
and a frequency signal proportional to ow. In addition, there are
relay alarm outputs for user-set low and high ow levels.

Display

6 ft. control cables (2)

out to display

Fusion coated

aluminum housing

PVDF plastic ttings (2)

(must be designated at time of order)

Flow

Meter

Male NPT or barb

10-24 grounding screws

(on bottom of meter)

Removable bracket

for mounting

Materials Meter Housing

Electrodes

O-Ring

Display Housing

Rate Display Units

Total Display Units

Power

Accuracy

Max Fluid Temperature

Maximum Pressure

Minimum Conductivity

Outputs

*Specifications subject to change

Fusion coated aluminum

Platinum

FKM (EPDM optional)

Polycarbonate

Gal/Minute, Liters/Second, Gal/Hour

Gallons, Liters

115 Vac, 60 Hz

+/-1% of reading,

plus .005 gpm (0.02 lpm)

185˚ F (85˚ C)

150 psi (@ 75˚ F)

>20 microSiemens/cm

• 4-20 mA, 0-5 Volts, both isolated

• Frequency to 9999 pulses per gallon, isolated (10 mA, 30 Vdc)

• High alarm, low alarm relay, isolated (100 mA, 110 Vac/Vdc)

FLOW RANGE

SIZE LOW FLOW CUTOFF MINIMUM FLOW for spec accuracy MAXIMUM FLOW

L/MIN GAL/MIN GAL/HR L/MIN GAL/MIN GAL/HR L/MIN GAL/MIN GAL/HR

-025

.04 .01 .60 .26 .07 4.2 3.8 1 60

-038

.11 .03 1.80 .76 0.2 12 11 3 180

Page 1

INSTALLATION and OPERATION

.218” DIA

3.75”

3.00”

2.50”

3.00”

3.50”

4.90”

2.30”

4.40”

4.93”

SET

.71”

.59”

1.25” 1.25” 1.25”

1.00”

4.93”

2.92”

INSTALLATION

Mounting. Mount the display housing to a secure surface with

screws or bolts. Remove the front cover to gain access to the

mounting holes, directly under the front cover screws. Attach
the ow meter to a secure surface using the foot bracket.
Alternatively, the unit can be supported by the piping and the
foot bracket removed. See mounting diagrams below.

CAUTION: Although this meter has an
empty pipe detection function, under

certain conditions of empty or partially­full pipe the meter may read

a ow when there is none. If this is a

hazardous condition, mount the meter in such a way as

to ensure the meter will always be full of liquid.

FLOW METER

CONNECTIONS

The meter ships with the coil activation and signal leads
already connected to the display housing. To connect optional

output signal or alarm relay leads, remove the front cover. See
the Connections diagram, page 3. Power connection uses a
standard power cord. If conduit connection is required, remove

the cord and strain relief and use the strain relief hole for a
conduit connector.

Grounding. For proper operation, one or both of the ground

lugs must be well connected to a good quality earth ground.

(The ground lugs also retain the foot bracket). See the
Grounding diagrams, page 3. The meter comes with a 12 foot

ground wire attached.

OPERATION

Display. The ow rate is displayed in the time and volume

units that have been selected in Set-Up (page 5) (liters/min, for
example). The cumulative total ow is displayed in the chosen
units, up to eight digits. When the total reaches its maximum,

the display resets to zero and begins again.

DISPLAY

6 ft. cables

to display

Outputs. The analog output varies continuously with the ow.
If the output is too “jumpy” (changes too frequently), it can be

damped in one of two ways: 1) increase the averaging time

(under the Fast Analog Output setting); or 2) select “Disabled”
(the default condition) under Fast Analog Output and increase

the amount of damping using the Low Pass Filter setting.

The pulse output will produce a 50% duty cycle pulse at the

volume intervals for which it is set - one pulse per liter, for
example. Note: Since each pulse consists of equal times on
and off, if the interval between pulses is large, the pulse may
remain in the “on” condition for several seconds.

The relay alarm output will only energize if the ow goes
above (high) or below (low) the ow alarm setting. The alarm
relay will remain energized until the ow exceeds the setpoint

by .25% (hysteresis).

Page 2

- +

Pulse

Output

(UNUSED)

+

+

-

-

Power

Supply

4-20mA Output

(Consult Factory for Other Ranges

)

Strain Reliefs
and Housing Front
are Not Shown

Fuse, .25 AMP,
5 X 20mm

Low Alarm

High Alarm

Display
Cable

To

Sensor

110 Vac

110 Vac

G

Analog Device

CONNECTIONS and GROUNDING

WHITE

GREEN

BLACK

RED

To

Sensor

FLOW METER

DISPLAY BOARD

IDEAL GROUNDING WITH METALLIC PIPING

Bare End Under Clamp

Mounting Bracket Removed

To Earth Ground

STANDARD GROUNDING

Mounting Bracket

Connect Ground to

Either Screw

To Earth Ground

Page 3

SETTINGS

D I S P L A Y

Rate
Tot

SET

Volume Units G

SET

Time Units M

SET

Tot Dec Point
Format 0.0

SET

An. output Type

SET-UP. Use the instructions below to set up your control. Use the key to move from one operation to

SET

the next, and use the and keys as described to change settings within operations.

This is the power-up display.

Rate/total display (shows two seconds after power-up), Press to begin programming.

SET

Use the key to choose the volume units: milliliters (mL) liters (L) or gallons (G)

Use the key to choose the time base for rate: per second (S), per minute (M), per hour
(H), per day (D).

Use the key to choose number of decimal places: 0, 0.0, 0.00.

Leave “Analog Output Type” unchanged unless you intend to use the 0-5 V output.
Standard setting is for 4-20 mA. Consult factory for 0-5 V output.

SET

Fast An. Output

SET

Rate For Analog
Output:

SET

SET

Rate For High
Alarm:

SET

Rate For Low
Alarm:

SET

Pulse Output

SET

Low Pass
Digital Filter:

SET

Totalizer Reset

Leave default (“Fast Analog Output”) unchanged unless you have a demanding closed-loop application.
Standard setting is “disabled”. If you enable this output, use the key to select a response
time, 50 to 1000 milliseconds. This will control how rapidly the analog output tracks ow.

Use the and key to set the percentage of full scale at which peak analog output
(20 mA or 5 V) occurs. On a max 10 gpm meter, 60% would be 6 gpm, for instance.

Use the and key to set the percent of full scale at which the high ow alarm will energize.
On a 10 gpm meter, 90% would equal 9 gpm, for instance.

Use the and key to set the percent of full scale at which the low ow alarm will
energize. On a 10 gpm meter, 10% would equal 1 gpm, for instance.

Use the and key to set the number of pulses (0000 to 9999) per unit. If you have
selected liters, it will be pulses per liter, etc.

This setting controls the smooth/responsive trade off of the display. Increasing the time makes
the display smoother, but slower to respond to change. Use the to set 1, 2, 5, 10, or 20 seconds.
If using the meter with pulsing ows, it may be necessary to increase the time.

Use the key to switch between totalizer reset “Enabled” and “Disabled”. If the reset is enabled,
every time the key is pressed during normal operation, the totalizer will reset to zero. Settings
nished.

SET

Page 4

TROUBLESHOOTING

Problem

No Display

Flow rate always reads “0”

Flow rate incorrect

Probable Causes Try...

No power

Blown fuse

Loose ribbon cable

Reversed ow direction

Missing ground wire

Empty pipe

Flow rate below minimum

Loose wiring or incorrect wiring

Fluid conductivity <20 microSiemens/cm

Missing or incorrect ground wire

Fluid conductivity <20 microSiemens/cm

Empty pipe

Check for 110 Vac

Test fuse, replace if bad

Check ribbon cable connections

Reverse ow connections

Install ground wire

Install meter in vertical position

Use next smaller ow meter

Check connections on display board

Select another ow meter

Check for proper grounding

Select another ow meter

Install meter in vertical position

Page 5

WARRANTY/DISCLAIMER

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a
period of 13 months f rom date of purchase. OMEGA’s WARRANTY adds an additional one (1) month
grace period to the normal one (1) year product warranty to cover handling and shipping time. This
ensures that OMEGA’s customers receive maximum coverage on each product.

If the unit malfunctions, it must be re t u rned to the factory for evaluation. O M E G A’s Customer Serv i c e
D e p a rtment will issue an Authorized Return (AR) number immediately upon phone or written re q u e s t .
Upon examination by OMEGA, if the unit is found to be defective, it will be re p a i red or replaced at no
c h a rge. O M E G A’s WARRANTY does not apply to defects resulting from any action of the purc h a s e r,
including but not limited to mishandling, improper interfacing, operation outside of design limits,
i m p roper re p a i r, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of
having been tampered with or shows evidence of having been damaged as a result of excessive corro s i o n ;
or current, heat, moisture or vibration; improper specification; misapplication; misuse or other operating
conditions outside of OMEGA’s c o n t rol. Components in which wear is not warranted, include but are not
limited to contact points, fuses, and triacs.

OMEGA is pleas ed to offer suggestions on the use of its various products. However,
OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any
damages that result from the use of its products in accordance with information provided by
OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by the
company will be as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR
R E P R E S E N TATIONS OF ANY KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF
TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTA B I L I T Y
AND FITNESS FOR A PA RTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF
L I A B I L I T Y: The remedies of purchaser set forth herein are exclusive, and the total liability of
OMEGA with respect to this ord e r, whether based on contract, warr a n t y, negligence,
indemnification, strict liability or otherwise, shall not exceed the purchase price of the
compone nt upon which lia bili ty is b ased. In no even t shal l OMEG A be li able for
consequential, incidental or special damages.

CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic
Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical
applications or used on humans. Should any Product(s) be used in or with any nuclear installation or
a c t i v i t y, medical application, used on humans, or misused in any way, OMEGA assumes no re s p o n s i b i l i t y
as set forth in our basic WA R R A N TY/ DISCLAIMER language, and, additionally, purchaser will indemnify
OMEGA and hold OMEGA h a rmless from any liability or damage whatsoever arising out of the use of the
P roduct(s) in such a manner.

RETURN REQUESTS/INQUIRIES

Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE
RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN
(AR) NUMBER F R O M OMEGA’S CUSTOMER S E RVIC E D E PA RT MENT (IN OR D E R T O AV O I D
PROCESSING DELAYS). The assigned AR number should then be marked on the outside of the return
package and on any correspondence.

The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent
breakage in transit.

FOR WARRANTY RETURNS, please have the
following information available BEFORE
contacting OMEGA:

1 . P u rchase Order number under which the pro d u c t

was PURCHASED,

2. Model and serial number of the product under
warranty, and

3. Repair instructions and/or specific problems
relative to the product.

FOR NON-WARRANTY REPAIRS,

consult OMEGA
for current repair charges. Have the following
information available BEFORE contacting OMEGA:

1. Purchase Order number to cover the COST

of the repair,

2. Model and serial number of the product, and

3. Repair instructions and/or specific problems

relative to the product.

OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords
our customers the latest in technology and engineering.

OMEGA is a registered trademark of OMEGA ENGINEERING, INC.
© Copyright 2005 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied,

reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the
prior written consent of OMEGA ENGINEERING, INC.

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