AF-E 400 Electromagnetic Flowmeter


The AF-E 400 electromagnetic flowmeter for utility applications and industrial automation is an ideal choice for applications with conductive liquids in tight spaces, such as cooling lines of welding equipment, bending machines and robots, or chemical dosing skids.


The AF-E 400 features best-in-class accuracy in every flow range, allowing optimal processing in automation. The round bore reduction of the sensor makes the flowmeter more resilient in terms of increased pressure, ensuring high accuracy over wide pressure and temperature ranges. Capable of continuous use at +194°F liquid temperature, the AF-E 400 is engineered for the most demanding cooling and hot water applications.


The AF-E 400 guarantees maximum flexibility when it comes to installation. Due to the special design of the magnetic circuit, field strength, and electronics, these mag meters can be positioned in extreme proximity to one another (as close as 0.08 in.) and can be mounted in parallel without any risk of signal interference.


This electromagnetic flowmeter also offers various output and communication options. The AF-E 400 features an IO-Link and a Modbus option to provide operators with application and process data for smarter factory automation, faster sensor installation or maintenance. The integrated temperature measurement eliminates the need for an additional sensor, while the self-monitoring AF-E 400, with NAMUR NE 107 diagnostics, ensures reliable operations.


  • Measurement of flow rate, totalized flow, and temperature up to +90°C / +194°F
  • Robust casted stainless steel housing (2 mm /0.08-in. thickness)
  • Maintains accuracy over a wide pressure and temperature range
  • Round bore tube for minimized pressure loss and a high turndown ratio without risk of cavitation
  • No cross-talk: Allows installation in series or in parallel up to a distance of 2 mm / 0.08-in. from device to device
  • NAMUR NE 107 diagnostics
  • IO-Link enables transmission of more process data and automated device configuration without programming
  • With rotatable full-color display
  • Nominal sensor sizes 6, 15, 20, 25 mm for flow rates up to 150 l/min with G (male) and NPT or RC (female) threads
    • Various adapters for other thread types
    • Adapter solution for 40 and 50 mm for flow rates up to 500 l/min



Factory automation, Machinery

  • Flow measurement of conductive liquids in utility applications and industrial automation
  • Cooling water monitoring in bending, welding robots, injection molding and web handling applications
  • Water consumption monitoring in washing installations (grit wash, car wash, industrial wash)
  • Flow monitoring in recirculation of hot and cold water
  • Dosing skids for reagents and catalysts or chemicals
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