Omega FMG490 User guide

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User’s Guide

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FMG490 SERIES

Municipal/Industrial Magmeter

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The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains the right to alter specifications without notice.

omega.com [email protected]

U.S.A. Headquarters:

Servicing North America:

FMG490 INSTRUCTIONS

Omega Engineering, Inc.

800 Connecticut Ave, Suite 5N01, Norwalk, CT 06854

Toll-Free: 1-800-826-6342 (USA & Canada only) Customer Service: 1-800-622-2378 (USA & Canada only) Engineering Service: 1-800-872-9436 (USA & Canada only) Tel: (203) 359-1660 Fax: (203) 359-7700 e-mail: [email protected]

For Other Locations Visit omega.com/worldwide

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, and reserves

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TABLE OF CONTENTS

FMG490 INSTRUCTIONS

General Information

General Information ...................................................................................................................................................Page 4

Features ...........................................................................................................................................................................Page 4

Specications ................................................................................................................................................................Page 5

Dimensions ....................................................................................................................................................................Page 6

Accuracy ..........................................................................................................................................................................Page 7

Flow Rate ........................................................................................................................................................................Page 7

Installation

Straight Pipe Recommendations ...........................................................................................................................Page 8

Full Pipe Recommendations ....................................................................................................................................Page 9

Positioning the Meter ..................................................................................................................................................Page 10

Installing Gaskets ...........................................................................................................................................................Page 10

Tightening Flange Bolts ..............................................................................................................................................Page 11

Equalization and Grounding (Metal and Plastic Pipe) .....................................................................................Page 11

Connections

General Cable Information .......................................................................................................................................Page 12

Cable Gland Opening and Sealing ........................................................................................................................Page 12

Cable Installation .........................................................................................................................................................Page 13

Wiring Diagrams ..........................................................................................................................................................Page 14

Cable Wiring Table ......................................................................................................................................................Page 15

Conguration

Sourcing Mode Output Application .....................................................................................................................Page 16

Sinking Mode Output Application ........................................................................................................................Page 16

Analog (4-20mA Current Loop) Output Application .....................................................................................Page 16

Cable Shield ...................................................................................................................................................................Page 17

Pulse Output ..................................................................................................................................................................Page 17

Analog (4-20mA) Output ..........................................................................................................................................Page 17

Operation

Changing Flow Meter Settings - Home Screen and General Navigation ..............................................Page 18

Changing Flow Meter Settings - Changing Total Direction/Resetting Totalizer .................................Page 18

Changing Flow Meter Settings - Entering Menu System .............................................................................Page 18

Changing Flow Meter Settings - Making Selections......................................................................................Page 18

Changing Flow Meter Settings - Standard Menu Options ..........................................................................Page 19

Changing Flow Meter Settings - Special Submenu ........................................................................................Page 19

To Change a Passcode ...............................................................................................................................................Page 20

Power Indicators ..........................................................................................................................................................Page 21

Troubleshooting & Error Messages

Problem ...........................................................................................................................................................................Page 22

Probable Cause.............................................................................................................................................................Page 22

Things to Try ..................................................................................................................................................................Page 22

Error Messages .............................................................................................................................................................Page 22

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GENERAL INFORMATION

FMG490 INSTRUCTIONS

The FMG490 Series is a spool-type electromagnetic

owmeter for use in irrigation applications in 3” to 12” pipe.

With no moving parts, these meters provide unobstructed

ow and are resistant to wear from debris found in ground

or surface water. Little maintenance is required because there are no bearings to wear out or propellers to stop turning. Minimal straight pipe requirements allow FMG490

meters to be used in piping congurations where there is

little space between the meter and an elbow.

The display for the FMG490 is mounted remotely for ease of access. The FMG490 is available as either AC or DC powered, with battery backup. Both rate and total indication show

on the remote mounted display. Bidirectional ow reading

is standard with totals available in forward, reverse, net

Features

Powder-coated diecast aluminum housing

User access lid (on back)

ow, batch forward ow, and batch reverse ow. Batch

totals can be reset. Built-in data logging is available as an

option for secure ow logging.

Scaled pulse output is standard and one additional output can also be added, such as 4-20mA.

The FMG490 Series is CE certied and IP68 for burial, or

applications where the meter may be under water for prolonged periods of time. All meters are provided with a security seal to protect against unauthorized access. The seal can be broken by an authorized agent to replace

the battery pack or eld install a power/output cable. The cable(s) are eld installed.

Remote cable access

Rate and total indicator with

light sensor button controls

Remote cable access

Equalization lug

Flanges, 150 lb. ANSI pattern

Santoprene/ Polypropylene Liner

Power and Output

cable port access

Mounting ange

Data logger port

Welded steel epoxy-coated ow tube

316SS electrodes (Inside)

No moving parts!

Snap on faceplate cover and lanyard

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Page 5

GENERIAL INFORMATION

FMG490 INSTRUCTIONS

Specications*

Pipe Sizes 3”, 4”, 6”, 8”, 10”, 12”

Flanges 150 lb. ANSI Pattern

Pressure 150 psi (10.3 bar) line pressure

Temperature Operating 10˚ to 140˚ F (-12˚ to 60˚ C)

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

Accuracy ±0.75% of reading on FMG480 and FMG490 (±1.0% FMG470), ±0.025% of full-scale ow from low ow

Low Flow Cuto 0.5% of maximum ow rate

Material Body

(3”only) Ductile cast iron, powder coated

Body

(4”-12”) Welded steel, epoxy-coated

Liner

(3”only) Noryl

Liner (4”-12”) Santoprene ange/Polypropylene liner body

Electronics Housing Powder-coated diecast aluminum

Electrodes 316 stainless steel

O-ring

(3” only) EPDM

Display Type 128x64 dot-matrix LCD

Digits 5 Digit Rate 8 Digit Total

Units

PleaseNote: AllFMG470metersare factorysetforgallonsper minute(GPM)rateandacre feettotal.Ifotherunitsare required,theycanbesetin theeld.

Bidirectional Forward Total, Reverse Total, Net Total, Batch Forward Total, Batch Reverse Total (Batch totals can be reset)

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

Battery Backup

(Not for use as primary power)

Scaled Pulse Output

AC Power

FMG480only)

Battery

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

Pulse Rates User-scalable from 0.1 to 99,999.9 volume units/pulse. Pulse width is one-half of pulse period with

(FMG490and

(FMG470only) One lithium 7.2V ‘D’ size battery pack, replaceable.

Options 4-20mA Current Loop Isolated, passive, 24Vdc, 650 Ω maximum current loop

Cable Power/Output Cable 20ft (6m) standard length polyurethane jacketed cable—for power and outputs (lengths up to 200’

Remote Display Cable

(FMG490)

Conductivity >20 microSiemens/cm

Empty Pipe Detection Hardware/software, conductivity-based

Regulatory

Environmental NEMA 6P, IP68 (10ft (3m) depth, continuously)

* Specicationssubjecttochange.

 RateTimeUnitisavailableinDayonly.

cuto to maximum ow rate of 10 m/sec

Rate Volume Units Rate Time Units Total Volume Units

Gallons Liters Barrels(42 gal) Cubic Feet Cubic Meters

Million Gallons Mega Liters

Imperial Gallons Million Imperial Gallons

Second Minute Hour Day

Gallons Gallons x 10 Gallons x 100 Gallons x 1000 Million Gallons Liters Kilo Liters Mega Liters

Barrels (42 gal) Cubic Meters Cubic Meters x 1000 Cubic Feet Cubic Feet x 1000 Second Foot Day Million Cubic Feet

Acre Feet Acre Inches Imperial Gallons Imperial Gallons x 1000 Million Imperial Gallons Fluid Ounces

DC powered units: Two lithium 3.6V ‘D’ batteries, replaceable. AC powered units: One 9V alkaline battery, replaceable.

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

minimum pulse width of 2.5 ms, 200 pulses/sec max. For battery option meters, pulse width varies with frequency, 150 pulses/sec max.

available).

20ft (6m) standard length polyurethane jacketed cable—for connection between meter and remote display (lengths up to 200’ available).

(EN 61326)

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GENERAL INFORMATION

Dimensions

FMG490 INSTRUCTIONS

Ø 5.285”

(134.2mm)

6.840” (173.7mm)

4.000” (101.6mm)

3.500” (88.9mm)

Remote Display

4.150” (105.4mm)

5.200”

(132.1mm)

4.375”

(111.1mm)

Ø 0.200”

(5.08mm)

Remote Meter

FMG490

Meter

Size

L H T ID

inch mm inch mm inch mm inch mm lbs

Shipping

Weight

3”* 12.25 311 7.08 179.8 .68 17.25 2.6 66.04 40 18

4” 10.12 257 8.3 211 .62 15.7 3.12 79 43 19.5

6” 12.09 307 9.1 231 .69 17.5 5.05 128 59 27

8” 14.14 359 10.1 257 .69 17.5 6.44 164 78 35

10” 18.08 459 11.2 284 .69 17.5 8.61 219 135 61

12” 19.68 500 12.2 310 .81 20.6 10.55 268 175 79

Flanges Standard ANSI 150 lb. drilling Cable 1 lb.

*Add8lbs(3.5kg)forremotedisplay.3”Only.

Note: ‘L’ dimension is total from liner face to liner face

Install security seals during installation if regulations require.

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GENERAL INFORMATION

33 0 5 10 15 20 25 30

FMG490 Accuracy

FMG490 INSTRUCTIONS

Accuracy (%)

(m/s)

(ft/s)

10 15

420 6 8 10

25 30

Flow Velocity

Flow Rate (3” - 12”)

Pipe Size

(Inchesindiameter)

Max Flow Rate

(Gallons/Minute)

Cut-o (min) Flow

Rate

(Gallons/Minute)

Max Flow Rate

(Liters/Second)

Cut-o (min) Flow

Rate

(Liters/Second)

Max Flow Velocity

(Meters/Second)

3” 4” 6” 8” 10” 12”

723 1285 2891 5140 8031 11565

3.62 6.43 14.46 25.70 40.15 57.82

46 81 182 324 507 730

0.23 0.41 0.91 1.62 2.54 3.65

10 10 10 10 10 10

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Page 8

INSTALLATION

FMG490 INSTRUCTIONS

Straight Pipe Recommendations (X=diameter)

NOTE: These congurations are to be used as general guidelines and do not cover every possible installation. A

combination of two or more obstructions will require additional straight pipe. If there is any concern about the

length of pipe required for a specic application, please contact your local dealer.

Reduced Pipe

Two Elbows In Plane

Two Elbows, Out Of Plane

Expanded Pipe

Swirling Flow: Propeller Meter

Swirling Flow: Partially Open Buttery Valve

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12345

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INSTALLATION

12345

Full Pipe Recommendations

FMG490 INSTRUCTIONS

Recommended:

Keep pipe full at meter for accuracy

12345

Recommended:

Keeps pipe full at meter for accuracy

Not Ideal:

Allows air pockets to form at meter

Not Ideal:

Post-valve cavitation can create air pocket

12345

Recommended:

Allows air to bleed o

Intermittent air

bubbles

miss electrode

Electrode

moved from

top by rotating

meter

Recommended:

Improved accuracy results from

unimpeded electrodes

Electrodes free from sediment

build-up

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Not Ideal:

Air can be trapped

Not Ideal:

Air bubbles and sediment on the

electrodes can aect accuracy

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INSTALLATION

FMG490 INSTRUCTIONS

Positioning the Meter

CAUTION: These ow sensors are not

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

These meters can be installed horizontally, vertically (with

upward ow), 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. The FMG490 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 8).

Installing Gaskets

GASKETS

Gaskets are required at all junctions.

1. Be sure all mating surfaces are smooth and free of debris.

2. Install provided gaskets, or equivalent, on each end of meter as shown in diagrams below. If using grounding rings, install one gasket on each side of the grounding ring.

3. Failure to install gaskets will void warranty.

Full Pipe Recommendations. To prevent false readings,

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 9).

Fittings. The meters have ANSI 150 lb. drilled anges and will mate with any other ANSI 150 lb. anges. Seetable

onpage11forangebolttighteningtorquespecications.

Calibration. The FMG490 meters are factory-calibrated

and will not require any form of eld calibration.

Chemical Injection. When an FMG490 meter 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.

Gaskets

Installationwithoutgroundingrings

Grounding

Rings

Gaskets

Installationwithgroundingrings

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

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Page 11

INSTALLATION

FMG490 INSTRUCTIONS

Tightening Flange Bolts

NOTE: Mating pipe anges must be ANSI 150# full face (FF)

and/or raised face (RT).

1. Tighten ange bolts in an alternating pattern.

• Tighten left ange bolt-1 to 20% recommended

torque.

• Tighten right ange bolt-1 to 20% of

recommended torque.

• Repeat steps a and b for each bolt in an alternating order, such as shown at right, tightening to 40%, then 60%, then 80%, and then 100%.

2. Test for leaks.

3. If needed, tighten further in 10% increments

until leaking stops. DO NOT over-tighten. Over-

tightening can cause serious damage to the ow

meter.

4. Recheck after 24 hours, adjusting if needed.

Equalization and Grounding

WARNING: ELECTRICAL SHOCK HAZARD

When the FMG490 is installed in a plastic piping system, or when externally powered,

the piping system must be grounded to meet national and local electrical safety codes. Failure to do so can result in electrocution.

Metal Pipe Installations. To equalize the electrical

potential of the uid, the FMG490 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 lock washer 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 equalization ange plate lock washer contacts the pipe ange. Connection must be inspected

periodically for corrosion to maintain the necessary low resistance connection.

Meter Flange

Gasket

Pipe Flange

Lockwasher

Flange Plate

Equalization Lug

SuggestedTighteningSequence

Caution: Improper tightening sequence can cause serious damage to the ow meter.

• Do not tighten one side at a time.

• Do not tighten each bolt completely

at one time.

SUGGESTED FLANGE BOLT TORQUE

Santoprene Liner

Pipe Size ft-lb Nm

3” 25 34

4” 20 27

6” 42 57

8” 65 88

10” 73 99

12” 97 132

Meter

Flange

Gaskets

Pipe

Flange

Metal PipeMetal Pipe

Plastic Pipe and Electronically Noisy Installations. When

the FMG490 is installed in plastic pipe or in an electrically noisy system (near a VFD etc.), grounding rings are recommended. As shown in the diagram below, the equalization wires should be solidly connected to the grounding ring tabs instead of the

ange bolts as in metal piping installations. Where lightning

is a threat, or in severe electrical environments, an optional connection to a nearby equipment ground or ground rod may be advisable.

Grounding Ring Part Numbers:

4” = 100876 10” = 100879 6” = 100877 12” = 103288 8” = 100878

Grounding Ring Gaskets

Plastic Pipe

Ground Clamp

(Exothermicallyweldwhen corrosionisaconcern)

Earth

8’ Ground Rod

Grounding Ring

Gaskets

Plastic Pipe

Equalization Lug

#6, #8, or #12 AWG Stranded Copper Ground Wire < 5’

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Page 12

CONNECTIONS

General Cable Information

FMG490 INSTRUCTIONS

For the FMG490, a cable needs to be installed from the terminal block on the remote display interface board to the 15 pin connector inside the remote display. This cable is referred to as the remote meter cable. There are four wires in the cable: +REM PWR, - REM PWR, B, and A. There are an additional 2 cable ports that can be used for power (DC or AC) and any outputs that are installed on the meter such as scaled pulse, 4-20mA, HART, and Modbus® . (See Sample Control Cable Wiring Diagrams and Control Cable Wiring Table.)

Remote

Meter

Remote Meter

Cable

Remote Display

Power/ Output Cable 1

Power/ Output

Cable 2

The display is available in either DC or AC versions.

DCversion ACVersion

If the meter is congured with AC power, one of the

additional Power/Output cable ports must be reserved for AC power only. We do not recommend combining AC power signals with any of the meter outputs in a single

cable. If the meter is congured for DC power, you may have one or two cables, depending on conguration. (See

Cable Wiring Diagrams.)

Cable Gland Opening and Sealing

WARNING: Improper sealing of glands or cables will invalidate any warranty.

If plugs or cable glands are removed, reinstall using Teon pipe sealant, or tape, to ensure maximum moisture protection.

Removeplug&o-ring.Insert cablegland/strainrelief.Feed cablethroughcablegland.

Clampcablewithstrainrelief clips.Attachdrainwirelugto bracketpost.

CRITICAL!

Torquecableglandsealing nutto22in-lbs.

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Page 13

CONNECTIONS

Cable Installation

FMG490 INSTRUCTIONS

Remote Display Wiring

1. On the remote display, unscrew the display lid and remove it.

2. Remove the 3 screws holding the display assembly and remove it from the meter exposing the internal 15 pin connector. Be sure to NOT undo any connections to the display assembly as you remove it.

3. Remove the 15 pin screw connector from the bag.

4. Remove the plug and o-ring from the cable port(s) where you want to insert the cable(s).

5. Install cable gland(s) using Teon pipe sealant, or tape, and insert cable end(s).

6. Strip cable jacket and conductors and install the wires into the screw connector in their respective locations (+Rem Pwr (red), - Rem Pwr (black), B (orange), and A (blue)).

10. Remove the plug and o-ring from the AC cable port.

11. Install cable gland and insert cable end.

12. Strip cable jacket and conductors and install 3 conductor power cable and wire to Line (L), Neutral (N) and ground (G) positions on power supply terminal block.

15pin connector

Power supplyterminal

Internal ACwires

block(ACversions)

13. Plug the 15 pin screw connector into its socket.

Be sure all pins align properly and that the connector has not slipped to one side.

Improper alignment

Proper alignment

7. At this point, install any other options using the Power/Output cable(s) through the Power /Output cable port(s), and securely screw them into the screw connector in their respective locations. (See Cable Wiring Table for details.)

8. If using AC power version continue here. If not, then skip to step 13. If AC then take the red and black wires coming out of the AC supply board and install in POWER+ and POWER- (red wire to pin 15, black wire to pin 14).

9. When the AC power supply board is installed, 85-264 VAC power is supplied via a user-supplied 3 conductor power cord having local regulatory agency approval. If installed outdoors or less than 33ft. (10m) from a utility power service entrance, AC power should be supplied via a properly-grounded surge suppression device.

Page 13

14. Plug the backup battery cable into the back of the display assembly. (Standard backup batteries

are two 3.6V “D” lithium cells. For the AC option, the

backup battery is one 9V alkaline cell.)

Backup battery connection

WARNING: BACKUP BATTERIES ARE NOT INTENDED AS A PRIMARY POWER SOURCE OF A MAINS (DC or AC) CONFIGURED METER.

15. Secure the cables inside the internal strain relief clips and tighten the cable gland sealing nuts securely (torque strain relief/sealing gland dome nut to 22 in-lbs). A loose nut could cause moisture ingress and compromise the meter head’s IP68 rating, voiding the warranty.

16. Remount the display assembly, being careful to not pinch any wires, and install the display assembly screws.

17. Reinstall the display lid, being sure to avoid crossthreading the lid.

Page 14

CONNECTIONS

Cable Installation

FMG490 INSTRUCTIONS

Remote Meter Wiring

1. On the remote meter, unscrew the user access lid and remove it.

Useraccesslid Frontpanel—

donotopen

2. Remove the 5 pin screw connector from its socket.

3. Remove the plug and o-ring from the cable port.

4. Install cable gland and insert cable end.

5. Strip cable jacket and conductors and install the wires into the 5 pin screw connector in their respective locations (+Rem Pwr (red), - Rem Pwr (black), B (orange), and A (blue)).

6. Secure the remote sensor cable inside the internal strain relief clip and tighten the cable gland sealing nut securely (torque strain relief/sealing gland dome nut to 22 in-lbs.). A lose nut could cause moisture ingress and compromise the meter head’s IP68 rating; voiding the warranty. Plug the 5 pin screw connector into its socket.

7. Reinstall the user access lid. Be sure to avoid crossthreading the lid and to not pinch any wires with the lid.

Black (R) -Remote Pwr: pn2 Red (R) +Remote Pwr: pn1

Orange (R) Remote B: pn4 Blue (R) Remote A: pn5

Remote Meter

RED

BLACK

ORANGE

BLUE

Remotemeter 15pinconnectorinremotedisplay

Page 14

Page 15

CONNECTIONS

FMG490 INSTRUCTIONS

Wiring Diagrams (Remote Display)

Remove the 3 screws holding the display assembly and remove it from the meter. Remove the 15 pin screw connector from its bag. Install the wires through the cable glands into the 15 pin screw connector in their respective locations. Plug the 15 pin screw connector into its socket. (C1=power/outputcable1,C2=power/outputcable2,R=remotecable)

Orange (R) Remote B: pn11 Blue (R) Remote A: pn12 Black (C1) DC-: pn14 Red (C1) DC+: pn15

DC Power with Pulse (D5N/D6N)

Black (R) -Remote Pwr: pn10 Red (R) +Remote Pwr: pn9 Green (C1) Pulse+: pn2 White (C1) Pulse-: pn1

Black (R) -Remote Pwr: pn10 Orange (R) Remote B: pn11 Blue (R) Remote A: pn12 Black (C1) DC-: pn14 Red (C1) DC+: pn15

DC Power with Pulse and 4-20mA (D5I/D6I)

Red (R) +Remote Pwr: pn9 Blue (C1) 4-20mA-: pn4 Orange (C1) 4-20mA+: pn3 Green (C1) Pulse+: pn2 White (C1) Pulse-: pn1

Remove the 3 screws holding the display assembly and remove it from the meter. Remove the 15 pin screw connector from its bag. Install the wires through the cable glands into the 15 pin screw connector in their respective locations. Plug the 15 pin screw connector into its socket. (C1=power/outputcable,R=remotecable,AC=ACpowercable)

Orange (R) Remote B: pn11 Blue (R) Remote A: pn12 Black (Internal): pn14 Red (Internal): pn15

Black (R) -Remote Pwr: pn10 Red (R) +Remote Pwr: pn9 Green (C1) Pulse+: pn2 White (C1) Pulse-: pn1

Black (R) -Remote Pwr: pn10 Orange (R) Remote B: pn11 Blue (R) Remote A: pn12 Black (Internal): pn14 Red (Internal): pn15

Red (R) +Remote Pwr: pn9 Blue (C1) 4-20mA: pn4 Orange (C1) 4-20mA+: pn3 Green (C1) Pulse+: pn2 White (C1) Pulse-: pn1

Black (Line) White (Neutral) Green (Ground)

AC Power with Pulse (A5N/A6N)

Page 15

Black (Line) White (Neutral) Green (Ground)

AC Power with Pulse and 4-20mA (A5I/A6I)

Plug the backup battery cable into the back of the display assembly.

WARNING: BACKUP BATTERIES ARE NOT INTENDED AS A PRIMARY POWER SOURCE OF A MAINS (DC or AC) CONFIGURED METER.

Page 16

CONNECTIONS

FMG490 INSTRUCTIONS

Cable Wiring Table

PIN 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

O ID PWR+ PWR-

D5N/ D6N

D5L/ D6L

A5N/ A6N

A5L/ A6L

REDC1BLACK

RED

INT

RED

INT

BLACK

INT

BLACK

INT

ISO-

GND

A B

BLUERORNGRBLACKRRED

-REM

PWR

+REM

PWR

B/RX A/TX RTS VISO 4-20 - 4-20 +

BLUEC1ORNGC1GREENC1WHITE

PULSE

SCLD+

GREENC1WHITE

PULSE SCLD-

(C1 = power/output cable 1 C2 = power/output cable 2 R = remote cable INT = Internal AC power wires)

Option IDs

O ID POWER SOURCE / OUTPUT(S)

D5N/D6N = DC POWER / PULSE SCALED D5I

/D6I = DC POWER / PULSE SCALED AND 4-20mA

RED

BLACK

ORANGE

O ID POWER SOURCE / OUTPUT(S)

A5N/A5N = AC POWER / PULSE SCALED A5I/A6I = A

BLUE

C POWER / PULSE SCALED AND 4-20mA

Page 16

Page 17

CONFIGURATION

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

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

FMG490 INSTRUCTIONS

Analog (4-20mA Current Loop) Output Application

**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.

Page 17

Page 18

CONFIGURATION

FMG490 INSTRUCTIONS

Cable Shield. In general, the cable shield and its bare drain wire should be left unconnected at the user equipment end of

the cable to minimize “ground loop” problems.

Pulse Output Conguration. A pulse output is standard on all models. 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. The pulse output rate in volume units/pulse can be set by the user via the SETP tab on the meter’s setup menus.

Because the pulse output of an FMG490 meter is set by the user, care must be taken to assure the output pulses do not exceed the maximum frequency of the meter while also ensuring a reasonable resolution.

K-factor: Remember that SETP is expressed in units totaled per output pulse (G/P if using gallons) while K-factors are expressed in pulses per gallon (P/G.) To determine K-factor from SETP, divide 1 by SETP (if SETP is expressed in gallons.) Conversely, 1 divided by the K-factor equals SETP

FMG490 meters that were initially congured as battery

powered units have a maximum output frequency of 150 Hz.

Those that were initially congured as powered units have a

maximum output frequency of 200 Hz.

Because all pulse outputs (SETP) are congured in (rate) units totaled per pulse, all sizes of meters can be congured with

the same SETP values

For example, if your rate is chosen as gallons per minute

(GPM) the table below applies. If your rate is dierent, simply

use your rate label in place of (GPM.) The numerical values will remain the same.

SETP

0.1 6 1200 900

0.2 12 2400 1800

0.3 18 3600 2700

0.4 24 4800 3600

0.5 30 6000 4500

0.6 36 7200 5400

0.7 42 8400 6300

0.8 48 9600 7200

0.9 54 10800 8100

1.0 60 12000 9000

Flow Rate at 1

Hz (GPM)

Flow Rate at

200 Hz (GPM)

PoweredMeters

Flow Rate at

150 Hz (GPM)

BatteryPowered

Meters

Lowerfrequencyoutputpulses(1pulseforsomeparticular numberofgallons)canalsobeset.

Any output frequency can be determined by:

Rate (units/minute) ÷ SETP (units/pulse) = pulse/minute Hz = pulse/minute ÷ 60 seconds / minutes

Analog Output (4-20mA) Conguration. (Not available on battery only units.) Since the meter’s analog output

is isolated and passive, loop power must be supplied externally as shown previously. (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 transmitter minimum voltage drop is 6Vdc (8Vdc with HART) which, with wiring resistance and loop power supply voltage, will determine the maximum resistance for RL. The

ow rates corresponding to 4 and 20mA can be set by the

user via the SET 4 and SET20 tabs on the meter’s setup menus.

Pulse Units. The units of measure of SETP are independently selectable and are not tied to rate or total. Upon change of the SETP unit, the pulse output may take up to 10 seconds, or the

duration of one pulse (whichever is longer) to take eect.

If Pulse Output is Inconsistent. The PDAMP lter may need

to be increased.

Pulse Width Timing. The unit and value of SETP must be chosen to keep the duration between meter pulse outputs to less than 500 seconds.

Page 18

Page 19

OPERATION

1.2345678

TAP

1.2345678 100

TOTAL CU FT X1000 RATE GPM

FORWARD TOTAL

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

FORWARD TOTAL

TAP

HOLD TAP

HOLD

TAP

Changing Flow Meter Settings

FMG490 INSTRUCTIONS

Home Screen and General Navigation

The HOME Screen displays ow volume, direction of the ow total 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.

These two buttons are light sensors which can detect when a nger is covering them and activate upon

release. Only three button touch actions are needed to control navigation through the menus, settings changes and back to the home screen.

HORIZONTAL SCROLLING:

Tap right button to scroll horizontally through menu tabs or move horizontally within a tab

dialog when applicable.

SELECT:

Tap left button to change a highlighted item within a tab dialog.

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.

Changing Total Direction/Resetting Batch

Totalizers

On the Main screen, hold and tap 5 times to scroll through the total direction options. Release to select a total direction.

Once BATCH FORWARD or BATCH REVERSE is selcted, tap four times to reset batch totalizer.

Entering Menu System

To enter the Menu System perform the hold and tap sequence. The Passcode entry screen will display. The default passcode is 000000. If

a dierent passcode has previously been set,

use the and to enter that passcode. In either case, hold and tap again to move into the menu system. (Ifyouenter thewrong

passcode,hold andtap again toreturn tothe previousscreen.Seepage21forinformationon howtochangeapasscode.)

TOTAL CU FT X1000 RATE

100

FORWARD TOTAL

GPM

ENTER PASSCODE

000000

PRESS AND TO CHANGE

Making Selections

Once in the Menu System, move from tab to tab by tapping the right button. (See the next page for details on the various available tabs.)

Select the parameter. In the screen for the highlighted tab you will see the current parameter value for that tab. Tapping the right button, move to the tab for the parameter you want to change.

In this example, the rst line indicates that the

current unit for the TOTAL is GALLONS. The next two lines tell you what to do next.

T UNIT R UNIT SET PDAMP

TOTAL = GALLONS PRESS + TO SET TOTAL UNITS FOR DISPLAY

SET 4SET 20 S ET F EXIT

If you would like to change the TOTAL units, just perform the hold and tap sequence to bring up a screen to change the setting.

T UNIT R UNIT S ET PDAMP

HOLD TAP

TOTAL:

PRESS TO CHANGE

SET 4SET 20 S ET F EXIT

GALLONS

Select a new setting. Select the new setting by scrolling through a list of selections as in the screen illustration below by tapping the

left button to nd a dierent TOTAL unit.

Accept changes. To accept any changes you have made, perform the hold and tap sequence.

HOLD TAP

When nished making changes. When you

are nished making changes, move to the EXIT

tab using the right button.

To return to the HOME screen, perform the hold and tap sequence.

HOLD TAP

Page 19

Page 20

OPERATION

FMG490 INSTRUCTIONS

Standard Menu Options

Note: Available options will depend on specic meter conguration. Not all options are available on all meters.

Options not ordered with your meter will not appear on the meter menu.

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 # of

samples for rolling average.

T UNIT R UNIT SET P DAMP

TOTAL = GALLONS PRESS + TO SET TOTAL UNITS FOR DISPLAY

SET 4 SET 20 SET F EXIT

T UNIT R UNIT SET P DAMP

FLOW RATE = GALLONS/MIN PRESS + TO SET RATE UNITS FOR DISPLAY

SET 4 SET 20 SET F EXIT

T UNIT R UNIT SET P DAMP

00001.0 GALLONS PRESS + TO SET GALLONS TOTALIZED PER PULSE SENT OUT PULSE1

SET 4 SET 20 SET F EXIT

T UNIT R UNIT SET P DAMP

DAMPING = 1 PRESS + TO SET DAMPING VALUE

SET 4

View or change ow

rate corresponding to 4mA.

SET 20

View or change ow

rate corresponding to 20mA.

EXIT

Return to HOME SCREEN or enter SUBMENU

T UNIT R UNIT SET P DAMP

00040.0 GALLONS/MIN PRESS + TO SET FLOW RATE AT WHICH 4mA (MIN) OUTPUT IS DESIRED

SET 4 SET 20 SET F EXIT

T UNIT R UNIT SET P DAMP

00200.0 GALLONS/MIN PRESS + TO SET FLOW RATE AT WHICH 20mA (MAX) OUTPUT IS DESIRED

SET 4 SET 20 SET F EXIT

T UNIT R UNIT SET P DAMP

PRESS + EXIT MENU AND RETURN TO FLOW DISPLAY

SET 4 SET 20 SET F EXIT

Special SUBMENU for Further Options

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 ve times, you will be redirected to a SUBMENU screen from which you can access several more options.

Navigation in this SUBMENU is the same as for the MAIN

MENU. Whenever you wish, go to the EXIT tab in the

SUBMENU and perform the hold and tap sequence to return to the MAIN MENU.

INFO COMM MBID FL DIR

PRESS + TO VIEW INFO ABOUT METER

SAMP

HPOLL FOUT EXIT

INFO: Meter model number, serial number, and rmware

version.

COMM: Modbus® baud rate and parity. (Not available on

battery only units.)

MBID: Modbus® address (Not available on battery only

units.)

HPOLL: HART Address (Not available on battery only

units.)

EXIT: Return to MAIN MENU.

Sub-Menu

Page 20

Page 21

OPERATION

1.2345678 100

TOTAL CU FT X1000 RATE GPM

0.0000000 SET ID

TOTAL

ACRE

FEET

RATE

GPM

FORWARD TOTALFORWARD TOTAL

OK LO

1.2345678

0.0000000 SET ID

TOTAL

ACRE

FEET

RATE

GPM

LFORWARD TOTAL

To Change a Passcode and Decimal Places

FMG490 INSTRUCTIONS

The FMG490 has a passcode system for restricting access to the menus. The meter comes from the factory with the passcode set to 000000. When a user attempts to enter the menu system (see details on page 20), the passcode entry screen will be displayed.

ENTER PASSCODE

000000

PRESS AND TO CHANGE

The default passcode is 000000. If a dierent passcode has

previously been set, then the user must enter that passcode at this time. After entering the passcode, or leaving it at 000000 if using the default passcode, the user does the tap and hold sequence to move into the menu system.

To change the passcode, you must use the THIRD MENU screen. Access the THIRD MENU screen as follows:

• Enter the main menu system, as described above.

T UNIT R UNIT SET PDAMP

TOTAL = GALLONS P

RESS + TO SET TOTAL

UNITS FOR DISPLAY

SET 4

SET 20

SET F

EXIT

• On the main menu, tab over to the EXIT tab and tap the ve times. A SUBMENU screen will display.

INFO COMM MBID FL DIR

PRESS + TO VIEW INFO ABOUT METER

PDAMP

PDAMP is used to view or change the number of samples for rolling average of pulse output.

TEST

TEST allows the user to initiate a fully functional, articial ow

rate for the purpose of testing other connected equipment. When TEST is applied, all features of the meter will function at

the stated ow rate (in gallons per second).

For TEST to function, the meter must be lled (not EMPTY

PIPE).

To enter a value into the TEST feature, navigate to the TEST

tab and enter a ow rate value in the VAL screen (in gallons

per second only,) then to the VAL box and to the ON screen. This will initiate the TEST feature. The next would

bring you to the OFF screen, but you can ‘hold and tap’ the arrows to return you to the sub menu while the feature operates.

After use, the TEST feature must be turned OFF. If the TEST

feature is not turned OFF, the stated static ow rate (in gallons

per second) will be shown any time the meter is full or in a

owing condition. Flow values recorded by the meter while

the TEST feature is operating are permanently recorded in the displayed TOTAL. It may be useful to note that these values are only written to permanent memory every 15 minutes and cycling all power within this 15 minute time frame will return the meter to its previous total.

Power Indicators

• On the SUBMENU screen tab over to the EXIT tab and

• To set the passcode, hold and tap and then use the

• Hold and tap again to return to the THIRD MENU

• Tab to EXIT, and then hold and tap to return to the

To change the number of decimal places in the total

• To set the decimal point, hold and tap on SETD and then

• Hold and tap again to return to the THIRD MENU screen.

• Tab to EXIT, and then hold and tap to return to the

SAMP

HPOLL FOUT EXIT

tap the ve times. The THIRD MENU screen will display.

SETD

PDAMP

SET

FOUT EXIT

TEST

SETCD

000000 PRESS PASSCODE

AMP

and to enter the new code.

screen

SUBMENU.

use the to move the decimal point.

SUBMENU.

A power indicator is displayed in the lower left of the main display window.

Any meter powered from an external power source will display a power plug icon when running on external power. If the connection to external power is lost, the meter will switch to the backup battery and the power icon will switch to a battery symbol.

OK on the battery indicator means battery voltage is above

6.4 volts.

LO on the battery indicator means the battery is low and should be replaced soon.

Beingpoweredbyexternal DCorAC

Beingpoweredbybatteryvoltageissucient

Beingpoweredbybattery- voltageislow

100

FORWARD TOTA

If display reads, ‘BATT END’

replace battery immediately.

Page 21

TOTAL CU FT X1000 RATE GPM

Page 22

TROUBLESHOOTING & ERROR MESSAGES

Troubleshooting

Problem Probable Causes Things to try…

Blank Display Faulty wiring from power source to

Flow rate reading uctuates excessively when ow is

unchanging

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

meter

Backup battery has not been plugged in Plug in the battery

Dead backup battery Replace battery

Excessively turbulent or unsteady ow

due to partially closed valves or other

ow obstructions

Pipe not full Provide back pressure or other means to ensure

Pulsing ow due to combining multiple upstream ow sources

Insucient mixing of upstream

chemicals

Low uid conductivity < 20 µS/cm Replace with dierent type of meter

Noisy electrical environment Improve grounding at meter and nearby potentially

Defective or noisy AC switching power supply

Wiring incorrect Compare wiring with appropriate wiring

External device input impedance too low Use sourcing rather than sinking interface

Cable too long Reduce interface pull-up resistance

Electrical noise sources interfering with pulse frequency signal

Check for incorrect wiring. Measure voltage with DMM where red and black wires connect to terminal block TB1 on back side of display. 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

pipe is lled

Move connection point further upstream

Move chemical injection downstream from meter

noisy electrical equipment. Increase distance between meter and electrical noise sources.

Replace power supply

recommendations

connection

Isolate, remove or reduce noise sources. Move meter control cable away from noise sources. Increase pulse damp setting (PDAMP)

FMG490 INSTRUCTIONS

Wrong type of cable Use only twisted pair cable and ensure both signal

Grounding problem Improve or try dierent grounding method

wires are on same twisted pair

Error Messages

Under certain conditions an error message may be displayed.

Message Description Notes

INIT Initialization is occurring during power up.

EMPTY PIPE Fluid is not detected between the sensing electrodes. Loop output = 22.8mA

LO in battery icon Battery is getting low, replace soon. Meter still functions. Above 6.4V, OK appears in icon

BATT END Battery is very low (approx. 6.1V). Totalizer stops updating. Loop output = 4mA

LOW VOLT Incoming external power is very low and backup battery is dead

or not connected

COIL FAIL Coil current too high or too low (short or open). Loop output = 22.8mA

COMM FAIL Communication between transmitter and sensor board fails. Loop output = 22.8mA

OVER RANGE Rate exceeds number of digits that can be displayed. Adjust units. Loop output = 4mA

Page 22

Loop output = 4mA

Page 23

FMG490 INSTRUCTIONS

WARRANTY/DISCLAIMER

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months from 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 returned to the factory for evaluation. OMEGA’s Customer Service Department will issue an Authorized Return (AR) number immediately upon phone or written request. Upon examination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser, including but not limited to mishandling, improper interfacing, operation outside of design limits, improper repair, 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 corrosion; or current, heat, moisture or vibration; improper specification; misapplication; misuse or other operating conditions outside of OMEGA’s control. 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. 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 REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF LIABILITY: The remedies of purchaser set forth herein are exclusive, and the total liability of OMEGA with respect to this order, whether based on contract, warranty, negligence, indemnification, strict liability or otherwise, shall not exceed the purchase price of the component upon which liability is based. In no event shall OMEGA be liable 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” applications or used on humans. Should any Product(s) be used in or with any nuclear installation or activity, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility as set forth in our basic WARRANTY/D OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product(s) in such a manner.

under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical

ISCLAIMER language, and, additionally, purchaser will indemnify

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 OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID 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. Purchase Order number under which the product 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.

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 NON-WARRANTY REPAIRS, 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.

Page 23

consult

Page 24

Where Do I Find Everything I Need fo

Process Measurement and Control?

OMEGA…Of Course!

Shop online at omega.com

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