Omega FMG2000, FMG-2100 User guide

User’s Guide

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FMG-2000/2100 SERIES

Municipal/Industrial Magmeter

Xxxxx Xxxxxxxx

XXXXXX

OMEGAnet®Online Service Internet e-mail

U.S.A.:

ISO 9001 Certified

omega.com [email protected]

Servicing North America:

Omega Engineering, Inc., One Omega Drive, P.O. Box 4047
Stamford, CT 06907-0047 USA
Toll Free: 1-800-826-6342 TEL: [phone]
FAX: [phone] e-mail: [email protected]

Canada:

976 Bergar
Laval (Quebec), Canada H7L 5A1
Toll-Free: 1-800-826-6342 TEL: [phone]
FAX: [phone] 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 Español: 001 [phone] FAX: [phone]

[email protected] e-mail: [email protected]

®

®

®

Servicing Europe:

Benelux:Managed by the United Kingdom Office

Toll-Free: 0800 099 3344 TEL: [phone]
FAX: [phone] e-mail: [email protected]

Czech Republic: Frystatska 184

733 01 Karviná, Czech Republic
Toll-Free: 0800-1-66342 TEL: [phone]
FAX: [phone] e-mail: [email protected]

France:

Managed by the United Kingdom Office
Toll-Free: 0800 466 342 TEL: [phone]
FAX: [phone] e-mail: [email protected]

Germany/Austria: Daimlerstrasse 26

D-75392 Deckenpfronn, Germany
Toll-Free: 0 800 6397678 TEL: [phone]
FAX: [phone] e-mail: [email protected]

United Kingdom: OMEGA Engineering Ltd.

ISO 9001 Certified One Omega Drive, River Bend Technology Centre, Northbank

Irlam, Manchester M44 5BD England
Toll-Free: 0800-488-488 TEL: [phone]
FAX: [phone] e-mail: [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.

TABLE OF CONTENTS

General Information

General Information, Features .......................................................................................................Page 1

Specications

Specications, Dimensions, Flow Range .........................................................................................Page 3

Installation and Grounding

Positioning the Meter,

Calibration, Chemical Injection, Metal Pipe Installations, Plastic Pipe Installations.......................Page 6

Straight Pipe Recommendations .................................................................................................Page 7

Full Pipe Recommendations ..............................................................................................................Page 8

Inputs/Outputs and Operation

External Power and Wiring, Pulse Output, Serial Output, Digital and Relay Outputs ...........................Page 9

Troubleshooting

Problem, Probable Cause, Things to Try ..............................................................................................Page 13

Straight Pipe Recommendations, Full Pipe Recommendations, Fittings,

TABLES, DIAGRAMS & CHARTS

Features ...................................................................................................................................................Page 1-2

Specications ...........................................................................................................................................Page 3

Flow Range, Accuracy, Dimensions..........................................................................................................Page 4-5

Metal Pipe Installation, Plastic Pipe Installation .......................................................................................Page 6

Straight Pipe Recommendations ............................................................................................................. Page 7

Full Pipe Recommendations .................................................................................................................... Page 8

Wire Function .......................................................................................................................................... Page 10

Display Operation .................................................................................................................................... Page 11

Troubleshooting ....................................................................................................................................... Page 13

GENERAL INFORMATION

The FMG2000/2100-Series is the most economical anged
electromagnetic owmeter on the market. It is used in 3” to 12”
pipe in municipal or industrial water, wastewater, pump stations
and packaged plant applications. The FMG2000/2100 have no
moving parts with electrodes designed to discourage fouling.
This magmeter requires much less frequent maintenance in
applications where debris would impede mechanical meters.
There is no rotor to stop turning or bearings to wear out. Minimal
straight pipe requirements allow FMG2000/2100-Series
meters to be used in piping congurations where there is little
space between the meter and an elbow.

FEATURES

FMG2000/2100-Series meters are rated IP68 for applications
where the meter may be under water up to a depth of 10 feet (3
meters) for prolonged periods of time.

Rate and total indication are standard. Settings (units, pulse
output, etc.) are user settable via front panel touch key pad.

The standard 20-foot (6 meter) cable also provides outputs for
use with a variety of Omega and other displays and controls
for remote reading, data logging and telemetry applications.
4-20mA passive current loop and high frequency outputs are
optional. The FMG2100 remote display meter can be supplied
with an optional internal AC power supply or can be externally
powered with 9-36 Vdc at 30 mA.

Multifunction Display

Light Sensor Keypad

Protective Cover with Magnetic Seal

Page 1

GENERAL INFORMATION

FEATURES Continued

Rate and total indicator

Security seal & cross-drilled screws (2) for tamper-evidence

Power/Output cable port access, tamper-sealed

Powder-coated ductile cast iron body & electronics housing

Glass lled molded plastic liner

316SS electrodes

Flanges, 150 lb. ANSI pattern

Rate and total indicator with protective cover and keypad sensors

Powder-coated ductile cast iron electronics housing

Security seal & cross-drilled screws (2) for tamper-evidence

Power/Output cable port access

Flanges, 150 lb. ANSI pattern

316SS electrodes

Santoprene/Polypropylene Liner

Welded steel epoxy-coated ow tube

Equalization lug

FMG2003

Equalization lug

FMG2104

(Remote indicator)

FMG2004

Page 2

SPECIFICATIONS

SPECIFICATIONS*

Pipe Sizes 3”,4”, 6”, 8”, 10”,12”

Flanges 150 lb. ANSI pattern

Pressure 150 psi (10.3 bar) working pressure

Temperature Operating 10˚ to 130˚ F (-12˚ to 54˚ C)

Storage -40˚ to 158˚ F (-40˚ to 70˚ C)

Accuracy +/- 1% of reading +/- 0.04% of full-scale ow from low ow cutoff to maximum ow rate of 10 m/sec

Low Flow Cutoff 0.5% of maximum ow rate

Materials Body (3” Only) Ductile cast iron, powder-coated w/epoxy powder

Body (4”-12”) Welded steel, epoxy-coated

Liner (3” Only) PPO/PS Blend

Liner (4”-12”) Santoprene/Polypropylene

Electronics Housing Ductile cast iron, powder-coated

Electrodes 316 stainless steel

O-ring (3” Only)

Display Type 128x64 dot-matrix LCD

Digits 5 Digit Rate 8 Digit Total

Units Rate Volume Units Rate Time Units Total Volume Units

EPDM

Gallons

Liters

Cubic Feet
Cubic Meters
Million Gallons
Mega Liters
Imperial Gallons
Million Imperial Gallons

Second
Minute
Hour
Day

Gallons
Gallons x 1000
Million Gallons

Liters

Liters x 1000
Mega Liters

Cubic Meters
Cubic Meters x 1000
Cubic Feet
Cubic Feet x 1000
Imperial Gallons
Imperial Gallons x 1000
Million Imperial Gallons

Power DC Power 9-36 Vdc @ 250 mA max, 30 mA average

AC Power

Telemetry Output

Pulse Frequency
Output

2

Signal Current sinking pulse, isolated, 36 Vdc at 10 mA max

Pulse Rates User-settable volume units/pulse. Pulse width is one-half of pulse period, 200 pulses/sec max

Options 4-20mA Current Loop Isolated, passive, 6-36Vdc, +/- 0.1% of pulse/frequency output HART compliant

1

85-264Vac, 50/60Hz, 0.12A

3.3V asynchronous receive and transmit (UART) signals, ASCII command-response protocol

2

Digital Output Isolated, open collector, 36Vdc @ 10mA max., frequency output up to 10kHz

Cable Control Cable Six-conductor water-blocked cable, polyurethane jacket, 20ft (6m) standard length for power, pulse

frequency or optional outputs

Remote Display Cable
(FMG2100)

30ft (9m) standard length (may be shortened). Additional cable can be ordered and attached with the use
of a junction box up to 100ft (30m) total

Conductivity >20 microSiemens/cm

Empty Pipe Detection Hardware/software, conductivity-based

Regulatory

(EN 61326) pending

Environmental IP68 to 10ft (3m) depth

*Specications subject to change. Please consult our website for the most current data.

1

FMG2000 only, FMG2001 requires external AC power supply

2

Available in 2014

Page 3

10

0

1

2

3

4

5

33 0 5 10 15 20 25 30

SPECIFICATIONS

FLOW RANGE (3” - 12”)

Pipe Size

(Inches in diameter)

Max Flow Velocity

(Meters/Second)

Max Flow Rate

(Gallons/Minute)

Max Flow Rate

(Liters/Second)

Turn Down Flow Rate

(Gallons/Minute)

Turn Down Flow Rate

(Liters/Second)

5

5

4

4

3

3

3” 4” 6” 8” 10” 12”

10 10 10 10 10 10

723 1285 2891 5140 8031 11565

46 81 182 324 507 730

3.62 6.43 14.46 25.70 40.15 57.82

0.23 0.41 0.91 1.62 2.54 3.65

Accuracy

2

2

Accuracy (%)

1

1

0

0

0 2 4 6 8

0

5

10 15

420 6 8 10

20

25 30

33

(m/s)

(ft/s)

Flow Velocity

Dimensions

Meter

Size

3”
4”
6”

8”
10”
12”

L

inch mm

12.0 305

10.24 260

12.27 312

14.24 362

18.18 462

19.68 500

H

inch mm

6.80 173

8.12 206

9.22 234

10.22 260

11.22 285

12.28 312

T

inch mm

.68 17.3
.62 20.9
.69 23.3
.69 23.3
.69 23.3
.81 20.6

ID

inch mm

2.60 66.04

3.12 79.25

5.05 128.27

6.44 163.58

8.61 218.69

10.55 267.97

Shipping Weight

pounds Kg

41 19
35 16
50 23
72 33
128 58
170 78

Flanges Standard ANSI 150 lb. drilling Cable 1 lb.

Page 4

SPECIFICATIONS

DIMENSIONS

H

T

(Metal Flange)

L

(Including Rubber Gaskets)

FMG2003 Shown

ID

FMG2100 Remote Shown

.20” Dia.

5.62”

H

T

(Metal Flange)

5.27”

FMG2004-2012 Shown

4.38”

ID

2.5”

3”

Page 5

L

(Including Rubber Gaskets)

INSTALLATION and GROUNDING

INSTALLATION

Caution: These ow sensors are not recommended

where installation fault may expose the ow sensor to
boiler pressure and temperature. Maximum
recommended operating temperature is 130˚ F.

Positioning the Meter. These meters can be installed
horizontally, vertically, and in any radial position. Using a

check valve on the upstream side of the meter, and/or an air
vent (vacuum relief valve) in the same, unobstructed run of
pipe as the meter, is required in any installation where the
meter may be exposed to suction when the system is not in
normal operation. Suction can cause damage to the liner.
Liner damage caused by suction, without the use of a check
valve and/or air vent, may void the warranty.

Straight Pipe Recommendations. As with most ow meters,

the FMG2000/2100 requires straight pipe before and
after the meter for best accuracy. However, the ability of
electromagnetic meters to average the ow across the entire
pipe allows for shorter straight pipe recommendations than
most mechanical meters (see page 7).

EQUALIZATION AND GROUNDING

Metal Pipe Installations. To equalize the electrical potential

of the uid, the iMAG meter, and the surrounding pipe, secure
the ange plates (factory-installed on the equalization wire)
to both pipe anges at one of the bolt holes, as shown below.
Be sure the lockwasher ts between the pipe ange and the
ange plate. For the best electrical bonding, remove rust
and paint to expose clean, bare metal where the equlization
ange plate lockwasher contacts the pipe ange. Connection
must be inspected periodically for corrosion to maintain the
necessary low resistance connection.

Meter Flange
Pipe Flange

Lockwasher

Flange Plate

Equalization Lug

Metal
Pipe

Meter

Flange

Bolt

Pipe
Flange

Metal
Pipe

Full Pipe Recommendations. All magmeters require a
method for determining that the pipe is empty, to prevent false
reading. This meter is designed to indicate ‘EMPTY PIPE’ if one
or more electrodes is exposed. For highest accuracy, install
the meter so that the pipe will be full when there is ow. If air
bubbles may be present in the pipe or sludge accumulation
is an issue, rotate the meter by one ange hole to position
the control housing at a 45˚ angle (see diagrams on page 8).

Fittings. The FMG2000/2100 anges have standard ANSI
150 lb. drilling pattern and mate with any other ANSI 150
lb. ange.

Calibration. The FMG2000/2100 is factory-calibrated and
will not require any form of eld calibration.

Chemical Injection. When any magmeter, by any manufac­turer, is used in a chemical injection application, the chemical

injection point must be placed downstream of the magme­ter OR far enough upstream for complete mixing to occur

before the uid reaches the meter. When unmixed chemical
alternates with water passing through the meter, the rapid
changes in conductivity may cause sudden spikes and drops
in the meter’s reading, resulting in inaccurate measurement.
The magmeter will restabilize, however, with a steady ow of
uid of uniform conductivity.

Caution: In chemical injection applications, install
chemical injection point downstream of magmeter,
or far enough upstream to allow complete mixing
of uids.

Equalization Diagram

Run wire from equalization lug to both pipe anges;

secure ange plates under bolt heads as shown.

WARNING: ELECTRICAL SHOCK HAZARD When

the meter is externally AC powered the piping
system must be grounded to meet national and
local electrical safety codes. Failure to do so can
result in electrical shock and/or burn.

Plastic Pipe Installations. When the FMG2000/2100 is in­stalled in a plastic piping system, it is not necessary to use
the equalization straps, but very important to ground the me­ter to avoid electrical shock hazard and electrostatic inter­ference with meter function. If the rate display is unstable,
grounding rings may be necessary.

Meter Equalization Lug

Plastic Pipe Plastic Pipe

Exothermically weld when

corrosion is a concern

#6 AWG Stranded

Copper Ground Wire

Ground Clamp

Earth

8’ Ground Rod

Page 6

STRAIGHT PIPE RECOMMENDATIONS

(X = diameter)

Reduced Pipe

Two Elbows In Plane

Two Elbows, Out Of Plane

1X

2X

Meter

1X

2X

Meter

1X

2X

Expanded Pipe

Swirling Flow

Propeller Meter

5X

5X

Meter

Meter

5X

1X

1X

Meter

1X

Page 7

Swirling Flow

Partially Open

Buttery Valve

Meter

FULL PIPE RECOMMENDATIONS

Recommended:

Keep pipe full at meter for accuracy

Meter

Meter

Not Ideal:

Allows air pockets to form at meter

Meter

Recommended:

Keeps pipe full at meter for accuracy

Meter

Recommended:

Allows air to bleed off

Intermittent air

Electrode

moved from

top by rotating

meter

Meter

miss electrode

Electrodes free

from sediment

bubbles

build-up

Meter

Not Ideal:

Post-valve cavitation can create air pocket

Meter

Not Ideal:

Air can be trapped

Intermittent air

bubbles

pass over

electrode

Possible

sediment

build-up

Meter

Recommended:

Improved accuracy results from

unimpeded electrodes

Not Ideal:

Air bubbles and sediment on the

electrodes can affect accuracy

Page 8

INPUTS/OUTPUTS and OPERATION

g

.20” Splice4” Wire Length

Contr

AC

Sealing Nut

REMOTE SENSOR CABLE INSTALLATION (FMG2100 ONLY)

The standard 30 foot cable connecting the FMG2100
sensor body to the remote display head is shipped with the
cable disconnected at the display end. To connect during

installation:

1. Remove the four cap screws securing the top housing
to the lower housing and swing the top open to expose the
internal wiring (see photo.)

2. Remove the sensor cable hole plug and discard.

3. After removing the cable gland bulkhead nut, insert the
5-postion plug and cable gland threaded bushing into the
open hole. (see drawing.) Do not loosen the cable jacket
sealing nut.

ol Cable

Power Cable

Sensor Cable

Bulkhead Nut

4. Install the bulkhead nut back onto the cable gland threads
inside the housing and tighten securely. A loose nut could
cause moisture ingress and compromise the meter head’s
IP68 rating, voiding the warranty.

5. Insert the ve-position plug into the mating receptacle on
the small circuit board attached to the larger main display
circuit board.

6. Close the top cover and replace the four cap screws,
securing tightly to reseal the housing against moisture
ingress.

and tighten securely. A loose nut could cause moisture ingress
and compromise the meter head’s IP68 rating, voiding the
warranty.

6. Slide the cable outward through the loosened cable gland
until the jacket just protrudes past the cable gland bulkhead
threads.

7. Retighten the gland sealing nut until cable cannot be
pushed in by hand and then tighten an additional full turn.
Pull on cable to assure sufcient tightness.

8. Insert the ve-position plug into the mating receptacle on
the small circuit board attached to the larger main display
circuit board.

9. Close the top cover and replace the four cap screws,
securing tightly to reseal the housing against moisture ingress.

Lower Housing Bulkhead

5-Position Plu

Cable from

Sensor

5-Position Plug

1
2
3

4
5

Position 1 - Drain
Position 2 - Brown
Position 3 - Yellow
Position 4 - Orange
Position 5 - Black

Top Housing

Mating Receptacle

1

2

3

4

5

Shortening the Sensor Cable. The sensor cable may be
shortened by cutting the cable at the display head end. Under
no circumstances should the cable gland at the sensor body
end be removed as this will compromise the IP68 moisture
ingress protection causing meter failure and voiding the
warranty. To shorten the cable follow the steps below:

1. Before cutting, loosen the cable gland sealing nut and slide
the gland back past where the cable will be cut.

2. After cutting, remove the jacket and outer braid shield
and cut and strip conductors to the dimensions shown in the
drawing (right). Tinning the bare wire ends is recommended
when possible for easier reinsertion into the 5-position plug.

3. Insert a small jeweler’s screwdriver or pick into the slot
next to the black wire on the 5-position plug and pull the wire
out. Then insert the black wire from the shortened cable into
the same position as the wire just removed. Repeat this step,
one wire at a time, for all ve positions.

4. Remove the sensor cable hole plug and discard.

5. After removing the cable gland bulkhead nut, insert the
plug and cable gland bushing through the open hole. Install
the nut back onto the cable gland threads inside the housing

Page 9

Lengthening the Sensor Cable. Replacing the entire cable
with a longer cable is not recommended. To extend the
distance from the sensor body to the remote display head:

1. Install a junction box with two holes for 5/8” connector
bushings at the cable splicing location.

2. Install the sensor cable gland threaded bushing into one
junction box hole and secure with the bulkhead nut.

3. Obtain the required additional length of 2-pair Seametrics
sensor cable and two additional cable glands, installing the
additional cable and glands from the junction box to the
display head. Secure all cable gland sealing and bulkhead
nuts to tightness required to prevent moisture ingress as
described in previous instructions. Use pull test to assure
sufcient tightness.

4. Splice wires in junction box using moisture-sealed wire
connectors or pot to seal against moisture ingress. Replace
junction box sealing cover.

5. Connect 5-position plug to the small circuit board receptacle
in the display head as described in previous instructions.

INPUTS/OUTPUTS and OPERATION

Sealing Nut

Contr

AC

Sealing Nut

Control Cable

AC

2in (50mm)

(10mm)

(Nor

GROUND

NEUTRAL

th America)

LINE

WIRING TO POWER SOURCES AND EXTERNAL MONITORING
AND CONTROL EQUIPMENT

The six-conductor Control Cable exiting the display head
provides user connections for DC power as well as for external
monitoring and control equipment needed for pump control,
SCADA equiment, Programmable Logic Controllers, remote
displays and other monitoring equipment. A four-character
Option Identier (OID) code found in the “Control Cable Wiring”
table on page 11 shows available combinations of external
wiring connections. In addition, it gives the corresponding
electrical function for each of the wires in the cable. The OID
code is also included in the model number on the meter as well
as on the label attached to the control cable as shipped from
the factory. The rst character in the OID code identies the
power source as either external DC (D) or internal AC (A). The
next two characters identify the functions of the other wiring
options such as Pulse Output (P), Telemetry (T), Analog Output
(L), Digital Output (D), Relay Output (R) or Serial Output (SS.)
(The fourth character (X) is reserved for future applications.)
Application, wiring and other electrical interface guidelines for
each of these is outlined in the following paragraphs.

Sensor Cable

Power Cable

Bulkhead Nut

DC Power Connection. When the rst OID code character is
a “D”, connect the RED and BLACK wires to the positive and
negative terminals respectively of a clean (low-noise) source
of dc power in the range of 9-32Vdc and able to supply at least
250mA. AC line-operated power supplies with outputs greater
than 18Vdc must be regulated. Where possible, connections
from either power supply terminal to the cable shield or any
other ground should be avoided.

AC Power Connection. When the rst OID code character
is “A”, the RED and BLACK wires are not used. Instead, 85­264Vac power is supplied to the ow meter via a separate
meter housing cable-entry gland and user-supplied three­conductor power cord having local regulatory agency approval.
If installed outdoors or less than 33 ft. (10m) from a utility
power service entrance, ac power should be supplied via a
properly-grounded surge suppression device. See diagrams
below for wiring instructions.

1. Using a 5/32” hex driver, remove the four cap screws
securing the top housing to the lower housing and swing the
top open to expose the internal wiring and components.

2. Loosen the cable gland sealing nut, remove the plug and
insert the unconnected cable end through the open hole.

ol Cable

Power Cable

Sensor Cable

Bulkhead Nut

3. Strip cable jacket and conductors (see below) and install
3-conductor power cable and wire to Line (L), Neutral (N)
and Ground (G) positions on power supply terminal block
as shown below

Green

th America)

Green-Yellow

(International)

White

(North America)

Blue

(International)

WARNING

!

HIGH VOLTAGE
DISCONNECT AC
POWER SOURCE

BEFORE SERVICING.

Black

(Nor

Brown

(International)

3/8 in

4. Tighten terminal block screws securely using 1/8”
(3mm) screwdriver. Tighten the cable gland sealing nut
securely. A loose nut could cause moisture ingress and
compromise the meter head’s IP67 rating, voiding the war­ranty.

5. Close the top cover and replace the four cap screws,
securing tightly to reseal the housing against moisture
ingress.

Pulse Output Connection. When the second OID code
character is “P”, refer to the “Digital Output Application”
diagrams on page 12 for recommended pulse output
connections to external equipment. Since this is an isolated
output, the external equipment must include a dc power
source to regenerate the pulse from the open-collector
output (transistor equivalent of a contact closure). A pull-up
or pull-down resistor may be needed if not included in the
user equipment as shown in the diagrams. Both the power
source and resistor may be supplied internally in some
types of control and monitoring devices. If not, as for most
PLC discrete input modules, they must be added externally
at the module input terminals. Pulse output rate in volume
units/pulse is user-settable via the SET P tab on the meter’s
setup menus.

Analog Output (4-20mA) Connection. When the second or
third OID code character is “L”, refer to the “Analog Output
Application” diagram on page 12 for 4-20mA current loop
output connections to external analog input devices. Since
the meter’s analog output is isolated and passive loop
power must be supplied externally as shown. (In addition, an
external resistor RL will be needed to convert the loop current
to voltage for voltage-only input devices.) The meter’s loop

Page 10

INPUTS/OUTPUTS and OPERATION

transmitter minimum voltage drop is 6V which, with wiring
resistance and loop power supply voltage, will determine the
maximum resistance for RL. The ow rates corresponding to
4 and 20mA are user-settable via the SET 4 and SET20 tabs
on the meter’s setup menus.

Digital Output Connection. When the second or third OID
code character is “D”, refer to “Digital Output Application”
diagrams on page 12 for recommended connections to
external equipment. These outputs are essentially the same
as the Pulse Output described above except they are capable
of output frequencies up to 10kHz. Frequency output scaling
is user-settable via the FOUT tab on the meter’s setup menus.

Control Cable Wiring

Serial Communication Connection. When the second and

third OID code characters are “SS”, refer to “Control Cable
Wiring” table below for recommended connections to external

equipment. These connections provide a half-duplex, isolated,
RS485 serial communications port using the Modbus
messaging protocol. The port is recongurable by internal
jumper settings to full-duplex RS232 or 3.3V CMOS. The TXD
connection is the transmitted data output from the meter and
RXD is the received data input to the meter. Optionally, the
RTS input can be used to open the port. Contact Seametrics
customer service for supported Modbus message protocol
and electrical interface specications.

Cable Shield. In general, the cable shield and its bare drain
wire should be left unconnected at the user equipement end
of the cable to minimize “ground loop” problems.

Power

Source

DC

DC

DC

DC

AC

AC

AC

AC

Options

Installed

4-20mA Output DPLX DC PWR + DC PWR - Pulse + Pulse - 4-20mA Out + 4-20mA Out -

Two Digital Outputs DDDX DC PWR + DC PWR - Out 1 + Out 1 - Out 2 + Out 2 -

4-20mA Output 1 Digital Output DDLX DC PWR + DC PWR - Out 1 + Out 1 - 4-20mA Out + 4-20mA Out -

One Pulse Output DPXX DC PWR + DC PWR - Pulse + Pulse - Do Not Connect Do Not Connect

4-20mA Output APLX Do Not Connect Do Not Connect Pulse + Pulse - 4-20mA Out + 4-20mA Out -

Two Digital Outputs ADDX Do Not Connect Do Not Connect Out 1 + Out 1 - Out 2 + Out 2 -

4-20mA Output 1 Digital Output ADLX Do Not Connect Do Not Connect Out 1 + Out 1 - 4-20mA Out + 4-20mA Out -

One Pulse Output APXX Do Not Connect Do Not Connect Pulse + Pulse - Do Not Connect Do Not Connect

OID

Codes

Red Black Green White Orange Blue

Cable Conductor Usage

Page 11

INPUTS/OUTPUTS and OPERATION

Current Sourcing Pulse

Digital Output Application - Sourcing Mode (Recommended for Rin < 30kΩ)

Open
Collector
Transistor

+

_

Green*

White*

+

_

Power

+

Source

V

s=3-36Vdc

47k Ω
Pull-down
Resistor

_

і

out

+

V Out

Rin

_

Vs

V Out

0

Meter Cable User Equipment

Digital Output Application - Sinking Mode (Recommended for Rin > 30kΩ)

Power

_

Source

Open
Collector
Transistor

+

_

Green*

White*

+

V

s=3-36Vdc

Pull-up
Resistor**

+

_

і

out

+

V Out

_

Rin

Current Sinking Pulse

Vs

V Out

0

Waveform

Waveform

Meter Cable User Equipment

Analog (4-20mA Current Loop) Output Application

+

_

Orange*

*

Blue

Analog
Output

+

_

Meter Cable User Equipment

* Wire colors shown are typical but because there are exceptions, always refer to the color codes shown on the cable label

or “Control Cable Wiring” table on page 11.

** Minimum resistor value is (100 x Vs) ohms. Higher resistances maybe used depending on frequency and cable length.
Longer cables and high frequencies require lower resistance.

*** Resistor RL converts 4-20mA current to voltage for voltage input only devices.

Power

Source

+

Vs=6-36Vdc

_

RL***

_

4-20 mA
Current Output***

+

і

Loop

Page 12

Tap

Tap

Hold Tap

INPUTS/OUTPUTS and OPERATION

1.2345678

1.2345678
100

TOTAL
CU FT
X1000
RATE
GPM

T UNIT R UNIT S ET PDAMP

SET 4SET 20 S ET F EXIT

TOTAL = GALLONS
PRESS + TO SET TOTAL
UNITS FOR DISPLAY

Hold Tap

Tap

Hold Tap

Tap

Tap

Tap

Tap

Hold Tap

Tap

Hold Tap

1.2345678
100

TOTAL
CU FT
X1000
RATE
GPM

CHANGING FLOWMETER SETTINGS

The HOME Screen. The HOME Screen shown below is the

normal screen which displays TOTAL ow volume and ow RATE
along with status conditions such as Empty Pipe. Two buttons
below the LCD display are used to access menu screens for
viewing and changing meter setup parameters.

100

Button Sensors. The two buttons are light sensors which can
detect when a nger is covering them. Only three button touch
actions are needed to control navigation through the menus,
settings changes and back to the home screen. They are:

HORIZONTAL SCROLLING: Tap right-hand button
to scroll horizontally through menu tabs or move
horizontally within a tab dialog when applicable.

SELECT: Tap left-hand button to change a highlighted
item within a tab dialog.

+

Main Menu. All menu screens consist of two rows of tabs
surrounding a dialog box that lets you view and change setup
parameters. For the MAIN MENU, the tabs have the following
functions:

TAB FUNCTION

T UNIT View or change TOTAL volume units

R UNIT View or change ow RATE units

SET P View or change pulse output scaling

DAMP View or change lter settings

SET 4 View or change ow rate corresponding to 4mA

SET 20 View or change ow rate corresponding to 20mA

F OUT View or change high frequency output scaling

EXIT Return to HOME SCREEN or Enter SUBMENU

To enter the MAIN MENU perform the hold and tap se­quence:

ENTER/EXIT: Hold left button while tapping
right button once to enter or exit a tab dialog
or to navigate between the HOME and other
menu screens.

+

T UNIT R UNIT S ET PDAMP

TOTAL = GALLONS
PRESS + TO SET TOTAL
UNITS FOR DISPLAY

TOTAL
CU FT
X1000
RATE
GPM

Once in the main menu you can move from tab to tab by
tapping the button:

In the dialog box for the currently highlighted tab you will
see that tab parameter’s current value. In the previous
screen illustration, the rst line indicates that the cur­rent unit for the TOTAL is GALLONS. The next two lines in
the dialog box tell you what to do next. If you would like
to change the TOTAL units, just perform the hold and tap
sequence to bring up a dialog box that will

tell you how to change the setting.

+

You select the new setting by scrolling through a list of
selections as in the screen illustration below by tapping
to nd a different TOTAL unit.

T UNIT R UNIT S ET PDAMP

TOTAL:

PRESS TO CHANGE

SET 4SET 20 S ET F EXIT

GALLONS

Similiarly, for the SET tabs, the dialog box instructions will
tell you how to change a numerical value using both the
and buttons.

To accept any changes you’ve made just hold and tap
again, and the changes will be saved and you will be
returned to the MAIN MENU screen where you can move to
another tab.

When you are nished making changes, move to the EXIT
tab using:

To return to the HOME screen, hold and tap:

+

Submenu. The EXIT tab in the MAIN MENU has a second
function. If, instead of using the hold and tap sequence to
return to the HOME screen, you tap four times.

You will be redirected to a SUBMENU screen which pro­vides access to more information about the meter, such
Serial Numbers and rmware revisions. Navigation in this
SUBMENU is the same as for the MAIN MENU. Whenever
you wish, go to the EXIT tab in the SUBMENU and use the
hold and tap sequence to return to the MAIN
MENU.

+

Page 13

SET 4SET 20 S ET F EXIT

TROUBLESHOOTING

PROBLEM PROBABLE CAUSES Try…

Blank Display Faulty wiring from power source to

meter or faulty AC power supply

Flow rate reads zero continuously
regardless of ow

Flow rate shows ‘REVERSE FLOW’
continuously when ow is greater
than cutoff

Flow rate reading uctuates ex­cessively when ow is unchang­ing

Flow is below cutoff Increase ow above cutoff

Meter is installed backwards Reinstall correctly

Excessively turbulent or unsteady
ow due to partially closed valves
or other ow obstructions

Check for miswiring. Measure voltage with DMM
where red and black wires connect to terminal
block TB2 inside meter display head. Verify cor­rect polarity and conrm that voltage is steady and
between 9Vdc and 32Vdc

Eliminate or minimize causes of ow disturbances
or increase meter damping

Flow Rate appears correct but
pulse/ frequency output is low,
erratic or absent

Flow Rate appears correct but
pulse/frequency output is erratic
and/or too high

Pipe not full.

Pulsing ow due to combining mul­tiple upstream ow sources

Insufcient mixing of upstream

chemicals

Low uid conductivity < 20 µS/cm

Noisy electrical environment

Defective or noisy ac switching
power supply

Wiring incorrect

External device input impedance
too low

Cable too long

Electrical noise sources interfering
with pulse frequency signal

Wrong type of cable

Provide back pressure or other means to ensure
pipe is lled

Move connection point further upstream

Move chemical injection downstream from meter

Replace with different type of meter

Improve grounding at meter and nearby potential
ly noisy electrical equipment. Increase distance
between meter and electrical noise sources.

Replace power supply

Compare wiring with appropriate wiring recom­mendations

Use sourcing rather than sinking interface connec-

tion

Reduce interface pull-up resistance

Isolate, remove or reduce noise sources. Move
meter control cable away from noise sources.

Use only twisted pair cable and ensure both signal
wires are on same twisted pair

Flow rate reads “COMM FAIL”
instead of rate (FMG2100 only)

Grounding problem

Cable between ow sensor body
and display head is disconnected,
miswired or damaged

Improve or try different grounding method.

Inspect cable for damage. Check cable connection
inside display head for correct wiring to ve-posi­tion connector, ensure that connector is properly
inserted, inspect for broken connections.

Page 14

NOTES

WARRANTY/DISCLAIMER

FOR NON-WARRANTY REPAIRS,

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 rtm ent 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 desi
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 r ol. Components in which wear is not warranted, include but are not
limited to contact points, fuses, and triacs.

OMEGA is pleased to offer suggestions on the use of its various products. Howev er,

OMEGA neither assumes responsibility for any omissions or e
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 T ATIONS OF ANY KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF
TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY W
AND FITNESS FOR A PA R TICULAR 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
component upon whic h lia bilit y is base d. In no even t sha ll OMEG A be liab l e for
co

nsequential, 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 T Y/ D ISCLAIMER 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.

rrors nor assumes liability for any

ARRANTY OF MERCHANTA B I L I T Y

gn limits,

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 FROM OM E G A’ S CUS T O M ER S E RV I C E D E PA R TM EN T (IN ORDER TO 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.

WARRANTY RETURNS, please have the

FOR
following information available BEFORE
contacting OMEGA:

1 . P u r chase 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.

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.

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.

consult OMEGA

W h e r e Do I Find Eve rything I Need for

P r ocess Measurement and Control?

OME GA…Of Cours e !

Shop online at omega.com

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