Badger ModMAG M4000 Electromagnetic Flow Meter

Brand: Badger Meter  | Model: ModMAG M4000

General purpose magmeter with Class 1, Div 1 hazardous location approval for a wide range of liquids, including water, wastewater, and almost any conductive liquid.

  • Available in sizes 0.5 to 12 inches
  • FM approved for Class 1, Div 1 hazardous locations
  • Extremely accurate ±0.25 of rate
  • Measurement unaffected by viscosity, temperature or density
  • Easy installation and no maintenance required
  • Remote and integral styles
Part #: Badger-ModMAG-M4000-RFQ
Starting at $3,015.00
Ships in 1-2 weeks. Expedite available.

Badger ModMag M4000 Series Electromagnetic Flow Meter

The innovative design of the Badger Meter M-Series M4000 meter represents the next generation of electromagnetic flow meter technology. Incorporating the latest developments in micro processing signal conditioning, the advanced design of the M4000 allows an accuracy of better than ± 0.25% with a flow range of 300:1. Targeted to a variety of industrial and municipal applications, the M4000 is virtually unaffected by density, temperature, pressure, and viscosity changes and provides an accurate and reliable long term metering solution. This meter complies with ANSI/NSF Standard 61, Annex G.


The M4000 is suited for use in applications where indication of rate and totalization is required. The ability to display flow parameters locally at the flow meter, or remotely by mounting the amplifier up to 100 feet away from the detector, provides a versatile solution for most industrial and municipal flow applications. Whether the fluid is water or something highly corrosive, very viscous, contains a moderate amount of solids, or requires special handling, the meter is able to accurately measure it. Housed in a Class 1, Division 1, NEMA 4X (IP66) enclosure, the M4000 design has been tested and approved by Factory Mutual (FM) in the United States and the Canadian Standards Association (CSA international) in Canada.


The operating principle of the electromagnetic flow meter is based on Faraday’s law of magnetic induction: The voltage induced across any conductor, as it moves at right angles through a magnetic field, is proportional to the velocity of that conductor. The voltage induced within the fluid is measured by two diametrically opposed internally mounted electrodes. The induced signal voltage is proportional to the product of the magnetic flux density, the distance between the electrodes and the average flow velocity of the fluid.