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FMG490 INSTRUCTIONS

Page 23 

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 trademark of OMEGA ENGINEERING, INC.
©  Copyright  2019  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 

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.

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.

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. 

 

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” 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 

activity, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility 

as set forth in our basic WARRANTY/DISCLAIMER language, and, additionally, purchaser will indemnify 

OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the  

Product(s) in such a manner.

Summary of Contents for FMG490 Series

Page 1: ...e mail info omega com For latest product manuals omega com en us pdf manuals XXXXXX Xxxxx Xxxxxxxx Shop online at omega com User sGuide TM FMG490 SERIES Municipal Industrial Magmeter...

Page 2: ...ns without notice omega com info omega com Servicing North America U S A Omega Engineering Inc 800 Connecticut Ave Suite 5N01 Norwalk CT 06854 Headquarters Toll Free 1 800 826 6342 USA Canada only Cus...

Page 3: ...onfiguration 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 2...

Page 4: ...t flow batch forward flow and batch reverse flow Batch totals can be reset Built in data logging is available as an option for secure flow logging Scaled pulse output is standard and one additional ou...

Page 5: ...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 Ounce...

Page 6: ...ter Size L H T ID Shipping Weight inch mm inch mm inch mm inch mm lbs Kg 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 12...

Page 7: ...0 6 8 10 FMG490 Accuracy Pipe Size Inches in diameter 3 4 6 8 10 12 Max Flow Rate Gallons Minute 723 1285 2891 5140 8031 11565 Cut off min Flow Rate Gallons Minute 3 62 6 43 14 46 25 70 40 15 57 82 M...

Page 8: ...ing Flow Propeller Meter Partially Open Butterfly Valve 1X 1X 1X 1X Swirling Flow NOTE These configurations are to be used as general guidelines and do not cover every possible installation A combinat...

Page 9: ...ent on the electrodes can affect accuracy Recommended Improved accuracy results from unimpeded electrodes Electrode moved from top by rotating meter Intermittent air bubbles miss electrode Electrodes...

Page 10: ...er ANSI 150 lb flanges See table on page 11 for flange bolt tightening torque specifications Calibration The FMG490 meters are factory calibrated and will not require any form of field calibration Che...

Page 11: ...tem must be grounded to meet national and local electrical safety codes Failure to do so can result in electrocution Equalization Lug Meter Flange Pipe Flange Gasket Pipe Flange Flange Plate Lockwashe...

Page 12: ...e 1 Cable Gland Opening and Sealing The display is available in either DC or AC versions DC version AC Version If the meter is configured with AC power one of the additional Power Output cable ports m...

Page 13: ...latory 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 10 Remove the plug...

Page 14: ...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 an...

Page 15: ...ange R Remote B pn11 Blue R Remote A pn12 Black C1 DC pn14 Red C1 DC pn15 WARNING BACKUP BATTERIES ARE NOT INTENDED AS A PRIMARY POWER SOURCE OF A MAINS DC or AC CONFIGURED METER Remove the 3 screws h...

Page 16: ...D5L D6L RED C1 BLACK C1 BLUE R ORNG R BLACK R RED R BLUE C1 ORNG C1 GREEN C1 WHITE C1 A5N A6N RED INT BLACK INT BLUE R ORNG R BLACK R RED R GREEN C1 WHITE C1 A5L A6L RED INT BLACK INT BLUE R ORNG R BL...

Page 17: ...pplication Sinking Mode Recommended for Rin 30k Analog 4 20mA Current Loop Output Application Minimum resistor value is 100 x Vs ohms Higher resistances maybe used depending on frequency and cable len...

Page 18: ...units totaled per pulse all sizes of meters can be configured 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 different...

Page 19: ...perform the hold and tap sequence When finished making changes When you are finished making changes move to the EXIT tab using the right button To return to the HOME screen perform the hold and tap s...

Page 20: ...g average SET 4 View or change flow rate corresponding to 4mA SET 20 View or change flow rate corresponding to 20mA EXIT Return to HOME SCREEN or enter SUBMENU T UNIT R UNIT SET P DAMP SET 4 SET 20 SE...

Page 21: ...the number of samples for rolling average of pulse output TEST TEST allows the user to initiate a fully functional artificial flow rate for the purpose of testing other connected equipment When TEST i...

Page 22: ...correct but pulse frequency output is low erratic or absent Wiring incorrect Compare wiring with appropriate wiring recommendations External device input impedance too low Use sourcing rather than sin...

Page 23: ...nation 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 no...

Page 24: ...as Mass Flowmeters Flow Computers Air Velocity Indicators Turbine Paddlewheel Systems Totalizers Batch Controllers pH CONDUCTIVITY pH Electrodes Testers Accessories Benchtop Laboratory Meters Controll...

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