Series IEFS Insertion Electromagnetic Flow Sensor

Brand: Dwyer Instruments, LLC

The Series IEFS Insertion Electromagnetic Flow Sensor comes in brass or stainless steel allowing it to handle a wide range of pressures and temperatures, as well as a variety of available saddle fittings, Series SDF, to fit pipe sizes 3 to 24˝.

The IEFS-1XX has an isolation valve which allows hottap installation.

Additional options for this flow meter include adapter fittings and a reverse flow output. The Series IEFS is great for “dirty” water applications or any application where mov

ing parts may be an issue. 

The IEFS is a liquid flow meter that uses a magnetic field to measure flow. As conductive fluids flow through the magnetic field, a voltage is generated which is measured and translated into a pulse frequency output signal.

This signal can then be used with the Series BAT to produce a 4 to 20 mA Analog signal, or the Series RTI to display rate and total.
  • Long life cycle and less frequent maintenance with no moving parts to wear or break and electrodes that discourage fouling
  • Unaffected by change in temperature, density, viscosity or concentration
  • Pulse output for use with a variety of displays and controllers for remote reading
  • Easy meter mount display and transmitter accessories for local indication and Analog 4 to 20 mA output



  • ± 1 % of Full Scale

Ambient Temperature Range

  • -17° to 72° C (0° to 160° F)

Electrical Connectors

  • Terminal Block

Enclosure, Body Material

  • 316 Stainless Steel
  • Brass
  • Die Cast, Powder-Coated Aluminum

Environmental Protection

  • IP66
  • NEMA 4X

Flow Rate

  • 0.08 to 6.09 mps (0.28 to 20 FPS)

Handle Assembly Material

  • Bronze
  • Stainless Steel


  • Conductive Liquids

NPT Connection

  • 1-1/2” NPT Male
  • 2” NPT Male

O-Ring Material

  • Ethylene Propylene (EPR)


  • 30 Vdc at 6 mA
  • 550 Hz at 20 feet/sec
  • Current Sinking
  • Opto-Isolated
  • Square Wave Pulse

Pipe Size

  • 3” to 10”

Power Requirement

  • 12-25 Vdc at 250 mA
  • 12-25 Vdc at 40 mA

Pressure Range

  • bar: 13.8
  • kPa: 1,380
  • psi: 200

Process Temperature

  • 0° to 93° C (32° to 200° F)

Wetted Materials

  • Hastelloy
  • PVDF

  • Conductive Liquids
  • Contaminated Liquid Flow Monitoring
  • Industrial
  • Irrigation
  • Municipal
  • Telemetry Applications

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