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  • 0 to 20 ft/s (0 to 6 m/s) range
  • Wetted materials:
    • Body shaft/fitting: 316SS
    • Electrodes: 316SS
    • Electrode cap: Polymer/Polystyrene
    • O-ring: Silicon
  • Standard ±1% full-scale accuracy
  • NSF certification
  • Optional High Accuracy:
    • ±0.5% of reading at calibrated velocity
    • ±1% of reading from 2 to 20 ft/s (0.6 to 6 m/s)
    • ±0.02 ft/s (±0.006 m/s) at < 2 ft/s (0.6 m/s)
  • Outputs:
    • (1) Analog: 4 to 20 mA, 0 to 5 V, 0 to 10 V or 2 to 10 V (display selectable)
    • (1) Pulse/Frequency: 0 to 15 V peak pulse, 0 to 500 Hz or scalable pulse output (display selectable)
    • (2) Alarm: (1) Empty pipe detection or minimum/maximum velocity, (display selectable)
    • (1) Reverse flow output indication
  • Applicable Pipe Size:
    • Standard Accuracy: 4 to 36 in. (101 to 914 mm)
    • High Accuracy: 4 to 10 in. (101 to 254 mm)


The Dwyer IEF Series insertion electromagnetic flow transmitter accurately and reliably measures fluid velocity of compatible clean or dirty non-coating, conductive liquids in addition to providing several continuous signal outputs. One unit is adjustable to fit pipe sizes from 4 to 36 inches (101.6 to 914.4 mm) and offers several output options including selectable BACnet MS/TP or Modbus RTU communications protocol over 2-wire RS-485 in addition to the standard analog, frequency and alarm outputs.

Field configuration of the Dwyer IEF Series insertion electromagnetic flow transmitter can be done via the integral LCD (optional) or remote setup display (A-IEF-DSP; sold separately) and offers flexibility by accommodating a variety of application configurations with one model through multiple display configurations including pipe size, pipe material, liquid type, analog output, pulse/frequency output, alarm outputs, communication outputs, damping, and calibration factor.

Common applications for the Dwyer IEF Series insertion electromagnetic flow transmitter include boiler feed water, chilled water, open and closed loop condenser water, irrigation systems, municipal water distribution, process and coolant flow, ground water remediation, chemical processing, pump protection, wastewater, and mining.