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Battery or DC Powered Plastic Body Electromagnetic Flow Meter



Item# FMG802

In stock

Lead Time (If not in stock): 4 weeks
  • No Moving Parts
  • Minimal Straight Pipe Required
  • Battery Powered
  • Built-In Rate and Total Indicator

FMG802 Model Options

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Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

*Highlighted options are not compatible. Please select a different combination.

Flow Range
Output Signal
Supply Power
Process Connection Size
Max Operating Pressure
Max Process Temperature
Wetted Materials
Media Type
Process Connection Type

  • Accuracy Value ±1% of reading (between 10% and 100% of max flow) &#177
  • Flow indication Hardware/ software
  • Maximum Ambient Temperature 54 {C} (130 {F})
  • Maximum Conductivity >20 micro Siemens/cm
  • Maximum Operating Pressure 150 psi or 10.3 bar working pressure @ 21°C (70°F)
  • Measurement Units Gallons/Minute
  • Minimum Ambient Temperature -12 {C} (10 {F})
The FMG800 Series is a full-bore, plastic-bodied electromagnetic flow meter designed for flow and usage monitoring applications in 1, 2 and 3 inch pipe. The polypropylene flow tube offers corrosion resistance to a wide range of chemicals and fertilizers. It is light weight and easy to install or remove from the pipe for inspection*.

With no moving parts, the magmeter permits unobstructed flow, minimizing flow disturbances and straight pipe requirements. The FMG800 Series can be used in piping configurations where there is little space between the meter and an elbow or valve. The FMG800 Series is resistant to wear from sand and debris found in ground or surface water. Since there are no bearings or propeller to wear out, maintenance and repair costs are kept to a minimum and it tolerates high flows without damage. A hinged polyethylene cover is included that protects from dust and UV rays, while permitting easy access to the flow rate and total display. Flow rate and total can be displayed in a variety of units, but must be factory programmed.

The FMG800 Series is used for tracking flow rate and total flow in usage monitoring applications including wells, industrial wastewater, heap leach mining discharge, cooling tower deduct, turf, landscape, and other water reclamation applications. In the event of DC power loss, or when changing batteries, the FMG800 will retain internal settings and flow total.

The FMG810 Series is externally powered via a 5-pin connector cable which also provides pulse output for use with a variety of Omega displays and controls for remote reading, data logging, pulse-to-analog conversion, and telemetry applications.

The FMG800 Series (FMG801-803) is a battery-operated unit for use when pulse output is not required. The batteries are user replaceable with an approximate 1 to 2 year life depending on usage.
*Includes Omega NPT fitting kit on 2 and 3" models.

Pipe Size: 1, 2 or 3" full port
Fittings: 1 NPTF, 2 or 3" flange clamps with 2 or 3 NPTF fitting kit
    Metric (BSP) fittings optional
Pressure: 150 psi or 10.3 bar working pressure @ 21°C (70°F)
Operating Temperature Range: -12 to 54°C (10 to 130°F), -40 to 80°C (-40 to 176°F) non-operating
Accuracy: ±1% of reading (between 10% and 100% of max flow) ±3% of reading (between cutoff and 10% of max flow)
Flow Range Minimum:
    1": 2.3 GPM (0.145 LPS)
    2": 6 GPM (0.38 LPS)
    3": 14 GPM (0.88 LPS)
Flow Range Maximum:
    1": 110 GPM (6.94 LPS)
    2": 300 GPM (18.9 LPS)
    3": 670 GPM (42.3 LPS)
Materials Body: Glass-filled polypropylene
Electrodes: 316 stainless steel
Electronics Housing: Die-cast aluminum, powder-coated
Display Cover: Polyethylene
Display Digits: Rate-6, Total-8
Units Rate: Gallons/Minute, Cubic Feet/ Second, Acre-Feet, Acre-Inch, Gallons, Gallons x 1000, Cubic Feet/Minute, Liters/Second
Units total: Cubic Feet, Liters, Mega-liters, Cubic Metersm Liters/Minute, Cubic Meters/Minute
    FMG810: 10 to 30 Vdc @ 60 mA max (15 mA average)
    NOTE: Using an unregulated power supply >18 Vdc may damage the meter due to AC line input voltage fluctuation
    FMG801/802/803: 6 each “AA” alkaline cells (included), replaceable. Estimated life is 1 to 2 years depending on usage
Pulse Output (FMG810 Only):
    Signal: Current sinking pulse, opto-isolated, 32 Vdc max at 10 mA max
    Standard Pulse Rate: 1 unit/pulse out, pulse width of 10 ms depending on unit selection
High Frequency (-HF): Pulse width 1.1 ms, min/max frequency, 3 to 150 hz
    Pulse/Unit: 1" = 80, 2" = 30, 3" = 13
Empty Pipe Detection: Hardware/ software, conductivity-based
Conductivity: >20 micro Siemens/cm
Environmental: NEMA 4X standard
Electrical Connection (FMG810 Only): 5-pin male circular with 6 m (20') cable

For a complete list of displays in alternate Engineering Units consult the full specification page via the link "Specs" above.

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Rated 4 out of 5 by from FMG810 does NOT have pulse output I believe the model numbers (FMG800 and FMG810) are reversed in the description as to which one provides a pulse output. I believe the FMG800 requires a permanent power supply (non-battery operated) but provides a pulse output signal. The battery-operated FMG810 does NOT provide a pulse output.
Date published: 2017-12-28
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Are any of these meters rated for a class 1, div. 2 hazardous area?

Asked by: CSPWalt
Thank you for your inquiry. Unfortunately, Omega's magnetic flow meters or totalizers are not rated for hazardous applications.
Answered by: Application Engineer JC
Date published: 2020-11-10

It can be used for sulfuric acid between 70 to 90%. ? Se puede usar para acido sulfurico entre 70 a 90 %. ?

Asked by: tito74
Thank you for your inquiry. Please note that chemical compatibility is the responsibility of customers to check agains the wetted material of the product in question. As a courtesy, the 316 SS as a wetted material is not compatible and PP has a Fair affect or 'C' rating.
Answered by: Applications Engineer JJC
Date published: 2024-02-14

Your Website has an error... The spec sheet and description both say the 2" flow meter is rate from 6 to 300 gpm but the drop down parts finder has it listed as 6 to 100 gpm

Asked by: RandyC
Thank you for your inquiry about the magnetic flow meter. Yes, it is an error and thank you pointing it out. The correct flow range for the 2 inch is 6 to 300 GPM.
Answered by: Application Engineer JC
Date published: 2023-02-07
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